Recyclerview in Coordinatorlayout cutting off last item

Recyclerview in Coordinatorlayout cutting off last item - android

I have a Bottom Navigation Bar, and a frame layout which is the fragment container. So when a an icon on a Bottom Navigation Bar is clicked, the fragment above changes.
In one of the fragment, I have a coordinator layout, collapsing toolbar, and recycler view. At the moment, the data is just a dummy data.
The problem that I am encountering is that whenever that fragment is inflated for the first time, the Recyclerview works fine and shows all of the items in the list. But when I change the fragment and come back to this fragment again, the last item of the Recyclerview is being cut off and is being hidden behind the Bottom Navigation Bar.
Here is my code for activity_home_screen.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.smartinc.livesportstv.activities.HomeScreen">
<android.support.design.widget.BottomNavigationView
android:id="#+id/bottom_nav"
android:layout_width="match_parent"
android:layout_height="55dp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
app:itemBackground="?attr/colorPrimary"
app:itemIconTint="#drawable/selector_bottombar_item"
app:itemTextColor="#drawable/selector_bottombar_item"
app:menu="#menu/bottombar_menu" />
<FrameLayout
android:id="#+id/frame_fragmentholder"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#id/bottom_nav"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
Here is the fragment_events.xml
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:fitsSystemWindows="true"
android:id="#+id/coordinator">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="120dp"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="#color/colorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title="Events"
app:expandedTitleTextAppearance="#style/TransparentText"
app:collapsedTitleTextAppearance="#style/Toolbar_text_black"
app:collapsedTitleGravity="center_horizontal"
android:paddingEnd="20dp"
android:fitsSystemWindows="true"
>
<!-- You can add views that you want to appear on the
collapsing toolbar here -->
<TextView
android:id="#+id/events_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Events"
android:textSize="30sp"
android:textColor="#color/black"
android:layout_marginTop="30dp"
android:layout_marginStart="20dp"
android:textStyle="bold"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="29 March, Thursday"
android:textSize="20sp"
android:textColor="#color/grey_800"
android:layout_marginTop="70dp"
android:layout_marginStart="20dp"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
android:minHeight="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
android:gravity="center_horizontal"
app:popupTheme="#style/AppTheme"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view_events"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Request"
android:textSize="17sp"
android:layout_gravity="end"
android:textColor="#color/colorPrimaryDark"
android:padding="10dp"
android:layout_marginEnd="10dp"
android:layout_marginTop="5dp"
/>
Here is HomeScreen.java
public class HomeScreen extends AppCompatActivity {
private BottomNavigationView bottomNavigationView;
private String fragName = "";
#Override
public void startActivity(Intent intent) {
super.startActivity(intent);
Constants.overridePendingTransitionEnter(this);
}
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home_screen);
init();
setMainFragment();
setBottomNavigation();
}
private void init(){
bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottom_nav);
}
private void setBottomNavigation(){
bottomNavigationView.setOnNavigationItemSelectedListener(
new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.bottombaritem_events:
if(!fragName.equals("events")) {
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.setCustomAnimations(R.anim.left_slide_in, R.anim.right_slide_out);
ft.replace(R.id.frame_fragmentholder, new EventsFragment());
ft.commit();
fragName = "events";
}
return true;
case R.id.bottombaritem_channels:
FragmentTransaction ft2 = getSupportFragmentManager().beginTransaction();
if(fragName.equals("events")) {
ft2.setCustomAnimations(R.anim.right_slide_in, R.anim.left_slide_out);
} else {
ft2.setCustomAnimations(R.anim.left_slide_in, R.anim.right_slide_out);
}
ft2.replace(R.id.frame_fragmentholder, new ChannelsFragment());
ft2.commit();
fragName = "channels";
return true;
case R.id.bottombaritem_more:
if(!fragName.equals("more")) {
FragmentTransaction ft3 = getSupportFragmentManager().beginTransaction();
ft3.setCustomAnimations(R.anim.right_slide_in, R.anim.left_slide_out);
ft3.replace(R.id.frame_fragmentholder, new MoreFragment());
ft3.commit();
fragName = "more";
}
return true;
}
return false;
}
});
}
private void setMainFragment(){
fragName = "events";
FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
ft.replace(R.id.frame_fragmentholder, new EventsFragment());
ft.commit();
}
#Override
public void onBackPressed() {
super.onBackPressed();
Constants.overridePendingTransitionExit(this);
}
}
And here is EventsFragment.java
public class EventsFragment extends Fragment {
private RecyclerView mRecyclerView;
private ArrayList<String> mData;
private CollapsingToolbarLayout collapsing_toolbar;
private Context mContext;
public EventsFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view = inflater.inflate(R.layout.fragment_events, container, false);
mContext = getActivity();
final CollapsingToolbarLayout collapsingToolbarLayout = (CollapsingToolbarLayout) view.findViewById(R.id.collapsing_toolbar);
AppBarLayout appBarLayout = (AppBarLayout) view.findViewById(R.id.app_bar);
appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
boolean isShow = true;
int scrollRange = -1;
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if (scrollRange == -1) {
scrollRange = appBarLayout.getTotalScrollRange();
}
if (scrollRange + verticalOffset == 0) {
collapsingToolbarLayout.setTitle("Events");
isShow = true;
} else if(isShow) {
collapsingToolbarLayout.setTitle(" ");//carefull there should a space between double quote otherwise it wont work
isShow = false;
}
}
});
// Initialize the RecyclerView
mRecyclerView = (RecyclerView) view.findViewById(R.id.recycler_view_events);
setUpRecyclerView();
return view;
}
private void setUpRecyclerView() {
LinearLayoutManager llm = new LinearLayoutManager(mContext);
llm.setAutoMeasureEnabled(true);
mRecyclerView.setLayoutManager(llm);
EventsAdapter eventsAdapter = new EventsAdapter(mContext);
mRecyclerView.setAdapter(eventsAdapter);
}
}
Any help would be really appreciated. Thanks!

Remove this line from Event XML.
android:fitsSystemWindows="true"
And everything would be good to go.

override the fragment's setUserVisibleHint(),call view?.requestlayout()
override fun setUserVisibleHint(isVisibleToUser: Boolean) {
view?.requestLayout()
super.setUserVisibleHint(isVisibleToUser)
}

collapsingToolbarLayout.setTitle("Events");
this layout is hiding your last Recycler view, when this is shown your last item is hidden, when you set
collapsingToolbarLayout.setTitle("");
your last item is visible.
So, set padding to parent layout accordingly

Related

Scroll behaviour of Tablayout with ActionBar is not working properly

I am trying to implement behaviour like whatsApp.
Expected Behaviour :
When user scrolles the list Tablayout scrolls up with action bar.
ActionBar hides and insted Tablayout takes it's place.
What's happening :
Everything is working good with ActionBar and Tablayout but when scrolled up place of Tablayout is taken by white space.
ScreenShot 1, ScreenShot 2
and I am trying to remove that white space but couldn't.
Below is my Activity and Fragment code
MainActivity.java
public class ViewPagerActivity extends AppCompatActivity {
private TabLayout tabLayout;
private LockableViewPager viewPager;
private Toolbar toolbar;
private MaterialSearchView searchView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_pager);
searchView = findViewById(R.id.search_view);
tabLayout = findViewById(R.id.tabs);
toolbar = findViewById(R.id.toolbar);
viewPager = findViewById(R.id.viewPager);
setSupportActionBar(toolbar);
getSupportActionBar().setTitle("WhatsApp");
toolbar.setTitleTextColor(Color.WHITE);
setupViewPager(viewPager);
tabLayout.setupWithViewPager(viewPager);
searchView.setOnSearchViewListener(new MaterialSearchView.SearchViewListener() {
#Override
public void onSearchViewShown() {
tabLayout.setVisibility(View.GONE);
TranslateAnimation animate = new TranslateAnimation(0, -tabLayout.getWidth(), 0, 0);
tabLayout.setAnimation(animate);
viewPager.setSwipeAble(false);
}
#Override
public void onSearchViewClosed() {
tabLayout.setVisibility(View.VISIBLE);
TranslateAnimation animate = new TranslateAnimation(0, 0, 0, tabLayout.getHeight());
tabLayout.setAnimation(animate);
viewPager.setSwipeAble(true);
}
});
}
private void setupViewPager(ViewPager viewPager) {
PagerAdapter adapter = new PagerAdapter(getSupportFragmentManager());
adapter.addFragment(new Tab1Fragment(), "CHATS");
adapter.addFragment(new Tab2Fragment(), "STATUS");
adapter.addFragment(new Tab2Fragment(), "CALLS");
viewPager.setAdapter(adapter);
}
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
onBackPressed();
break;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onBackPressed() {
if (searchView.isSearchOpen()) {
searchView.closeSearch();
viewPager.setSwipeAble(true);
} else {
super.onBackPressed();
}
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<FrameLayout
android:id="#+id/toolbar_container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="6dp">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:elevation="0dp"
app:layout_scrollFlags="scroll|enterAlways|snap"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</androidx.appcompat.widget.Toolbar>
<com.miguelcatalan.materialsearchview.MaterialSearchView
android:id="#+id/search_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_below="#+id/toolbar_container"
android:layout_marginTop="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:elevation="0dp"
app:tabIndicatorColor="#ffffff"
app:tabMode="fixed"
app:tabSelectedTextColor="#ffffff"
app:tabTextColor="#d3d3d3" />
</FrameLayout>
<com.example.fragmentcontroller.view_pager.LockableViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/toolbar_container"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</RelativeLayout>
Tab1Fragment.java
public class Tab1Fragment extends Fragment implements View.OnClickListener {
private float mToolbarHeight;
public Tab1Fragment() {
// Required empty public constructor
}
private View view;
private MaterialSearchView searchView;
private ArrayList<ModelD> modelDArrayList;
private RecyclerView recyclerView;
private Toolbar toolbar;
private FrameLayout toolbarContainer;
private TabLayout tabs;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_tab1, container, false);
return view;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
setHasOptionsMenu(true);
searchView = getActivity().findViewById(R.id.search_view);
toolbar = getActivity().findViewById(R.id.toolbar);
recyclerView = view.findViewById(R.id.recyclerView);
toolbarContainer = getActivity().findViewById(R.id.toolbar_container);
tabs = getActivity().findViewById(R.id.tabs);
mToolbarHeight = Utils.getToolbarHeight(getContext());
searchView.setOnQueryTextListener(new MaterialSearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
if (newText.equals("")) {
bindList(modelDArrayList);
} else {
ArrayList<ModelD> arrayList = new ArrayList<>();
for (int i = 0; i < modelDArrayList.size(); i++) {
if
(modelDArrayList.get(i).getName().toLowerCase().contains((newText).toLowerCase())) {
arrayList.add(modelDArrayList.get(i));
}
}
bindList(arrayList);
}
return false;
}
});
modelDArrayList = new ArrayList<>();
bindList(modelDArrayList);
recyclerView.setOnScrollListener(new HidingScrollListener(getContext()) {
#Override
public void onHide() {
if (!searchView.isSearchOpen()) {
hideViews();
}
}
#Override
public void onMoved(int distance) {
if (!searchView.isSearchOpen()) {
toolbarContainer.setTranslationY(-distance);
}
}
#Override
public void onShow() {
showViews();
}
});
}
private void hideViews() {
toolbar.animate().translationY(-toolbar.getHeight()).setInterpolator(new
AccelerateInterpolator(2));
// tabs.animate().translationY(-mToolbarHeight).setInterpolator(new
AccelerateInterpolator(2)).start();
}
private void showViews() {
toolbar.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2));
// tabs.animate().translationY(0).setInterpolator(new DecelerateInterpolator(2)).start();
}
private void bindList(ArrayList<ModelD> arrayList) {
if (arrayList.isEmpty()) {
for (int i = 0; i < 20; i++) {
ModelD modelD = new ModelD();
modelD.setName("Name " + i);
arrayList.add(modelD);
}
}
DAdapter adapter = new DAdapter(getContext(), arrayList);
recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
recyclerView.setAdapter(adapter);
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
inflater.inflate(R.menu.menu_search, menu);
MenuItem item = menu.findItem(R.id.action_search);
if (searchView != null) {
searchView.setMenuItem(item);
}
super.onCreateOptionsMenu(menu, inflater);
}
#Override
public void onClick(View v) {
}
}
tab1_fragment.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".view_pager.fragments.Tab1Fragment">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>

You should use CoordinatorLayout
The app:layout_scrollFlags="scroll|enterAlways|snap", app:layout_behavior="#string/appbar_scrolling_view_behavior" that you are using only work in CoordinatorLayout.
A proper implementation will somewhat look like below.
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/toolbar_container"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:elevation="0dp"
app:layout_scrollFlags="scroll|enterAlways|snap"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</androidx.appcompat.widget.Toolbar>
<com.miguelcatalan.materialsearchview.MaterialSearchView
android:id="#+id/search_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|enterAlways|snap" />
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dp"
android:layout_marginTop="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:minHeight="?attr/actionBarSize"
app:elevation="0dp"
app:tabIndicatorColor="#ffffff"
app:tabMode="fixed"
app:layout_scrollFlags="noScroll"
app:tabSelectedTextColor="#ffffff"
app:tabTextColor="#d3d3d3" />
</com.google.android.material.appbar.AppBarLayout>
<com.example.fragmentcontroller.view_pager.LockableViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
check this link, if you want a more detailed explanation.

Collapsing AppBarLayout not scrolling with TabLayout and NestedScrollView

I have an issue with scrolling Collapsing AppBar, when I am trying to scroll it touching the AppBarLayout part. And also it sometimes scrolling not smoothly.
Here is short (1m 30s) video of issue: https://www.youtube.com/watch?v=n32N9Z4S3SA&feature=youtu.be
Here is link to simple project (only this issue on github): https://github.com/yozhik/Reviews/tree/master/app/src/main/java/com/ylet/sr/review
I'm using: com.android.support:appcompat-v7:27.1.1
There is issue on offsite: https://issuetracker.google.com/issues/37050152
How it is: https://www.youtube.com/watch?v=xWadOVEaTSY&feature=youtu.be
How it should be: https://www.youtube.com/watch?v=J8ITp6RusZo&feature=youtu.be
Does anybody know how to fix this issue you saw on video? I created absolutely simple layouts to avoid any side effects, but bug still reproduced. Thanks in advance.
Description:
CollapsingActivity - activity with Collapsing AppBarLayout. Which loads one or two fragments into "fragment_content_holder" and it has TabLayout
to switch between fragments in view pager.
In activity method onCreate() - I'm just simulating request to server (loadData), and when some fake data is loaded - I am showing fragments in view pager, on first call - I am creating new TabMenuAdapter extends FragmentPagerAdapter, populate it with fragments and save links to instances. On the next call -
I don't create fragments from scratch and just populate them with fresh data.
MenuFragment1, MenuFragment1 - two fragments.
MenuFragment1 - has method public void setupData(SomeCustomData data), to set new data, not recreating fragment on network reconnect.
NetworkStateReceiver - listens to network change and send notifications.
TabMenuAdapter - just simple class to hold fragments.
Next is just copy/paste of code:
public class CollapsingActivity extends AppCompatActivity implements ChangeNetworkNotification {
private static int dataReloadIteration = 0;
private SomeCustomData dummyDataFromServer;
#BindView(R.id.root_layout)
CoordinatorLayout root_layout;
#BindView(R.id.app_bar_layout)
AppBarLayout app_bar_layout;
#BindView(R.id.collapsing_toolbar_layout)
CollapsingToolbarLayout collapsing_toolbar_layout;
#BindView(R.id.view_pager_layout)
ViewPager viewPager;
#BindView(R.id.tab_layout)
TabLayout tabLayout;
#BindView(R.id.collapsing_data_1_txt)
TextView collapsing_data_1_txt;
private NetworkStateReceiver networkStateReceiver;
private boolean isConnected;
protected Fragment currentFragment;
protected Fragment previousFragment;
protected FragmentManager fragmentManager;
private boolean dataLoading = false;
private boolean isCreated = false;
private MenuFragment1 menu1Fragment1;
private MenuFragment2 menu1Fragment2;
private TabMenuAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
Log.d("TEST", "CollapsingActivity.onCreate");
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_collapsing);
ButterKnife.bind(this);
fragmentManager = getSupportFragmentManager();
networkStateReceiver = new NetworkStateReceiver();
networkStateReceiver.setNetworkReceiver(this);
IntentFilter intentFilterForNetwork = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
registerReceiver(networkStateReceiver, intentFilterForNetwork);
initToolbar();
loadData();
}
#Override
protected void onStart() {
Log.d("TEST", "CollapsingActivity.onStart");
super.onStart();
IntentFilter intentFilterForNetwork = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
registerReceiver(networkStateReceiver, intentFilterForNetwork);
}
private void initToolbar() {
Log.d("TEST", "CollapsingActivity.initToolbar");
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar_layout);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
}
private void loadData() {
Log.d("TEST", "CollapsingActivity.loadData");
dataLoading = true;
Thread t = new Thread(new Runnable() {
#Override
public void run() {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(CollapsingActivity.this, "Data loaded.", Toast.LENGTH_SHORT).show();
Log.d("TEST", "CollapsingActivity.Data loaded.");
dataReloadIteration++;
dummyDataFromServer = getDummyObjectFromServer();
collapsing_data_1_txt.setText(dummyDataFromServer.Name); //Set data from server in collapsing part of Activity
boolean showOneView = false;
if (showOneView) {
initSingleView();
} else {
if (!isCreated) {
initTabView();
} else {
menu1Fragment1.setupData(dummyDataFromServer); //Set the data from server to fragment, not reloading it, just updating data
}
}
dataLoading = false;
}
});
}
});
t.start();
}
private SomeCustomData getDummyObjectFromServer() {
SomeCustomData dto = new SomeCustomData();
dto.Age = dataReloadIteration;
dto.Name = "Name " + dataReloadIteration;
return dto;
}
private void initSingleView() {
Log.d("TEST", "CollapsingActivity.initSingleView");
tabLayout.setVisibility(View.GONE);
viewPager.setVisibility(View.GONE);
showFragmentWithoutBackStack(R.id.fragment_content_holder, new MenuFragment1());
}
private void initTabView() {
if (!isCreated) {
Log.d("TEST", "CollapsingActivity.initTabView");
tabLayout.setVisibility(View.VISIBLE);
viewPager.setVisibility(View.VISIBLE);
setupViewPager(viewPager);
tabLayout.setupWithViewPager(viewPager);
isCreated = true;
}
}
private void setupViewPager(ViewPager viewPager) {
Log.d("TEST", "CollapsingActivity.setupViewPager");
menu1Fragment1 = MenuFragment1.newInstance(dummyDataFromServer);
menu1Fragment2 = MenuFragment2.newInstance();
adapter = new TabMenuAdapter(getSupportFragmentManager());
adapter.addFragment(menu1Fragment1, "Menu 1");
adapter.addFragment(menu1Fragment2, "Menu 2");
viewPager.setAdapter(adapter);
}
#Override
protected void onDestroy() {
Log.d("TEST", "CollapsingActivity.onDestroy");
super.onDestroy();
unregisterReceiver(networkStateReceiver);
}
#Override
public void networkStateIsChanged(boolean isConnected) {
this.isConnected = isConnected;
Log.d("TEST", "CollapsingActivity.networkStateIsChanged.isConnected: " + isConnected);
if (isConnected) {
Toast.makeText(CollapsingActivity.this, "Connection received.", Toast.LENGTH_SHORT).show();
if (!dataLoading) {
loadData();
}
} else {
Toast.makeText(CollapsingActivity.this, "Connection lost.", Toast.LENGTH_SHORT).show();
}
}
protected void showFragmentWithoutBackStack(int containerViewId, Fragment fragment) {
Log.d("TEST", "CollapsingActivity.showFragmentWithoutBackStack");
previousFragment = currentFragment;
currentFragment = fragment;
String fragmentTag = fragment.getClass().getSimpleName();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
if (previousFragment != null) {
fragmentTransaction.remove(previousFragment);
}
fragmentTransaction.add(containerViewId, fragment, fragmentTag)
.commitNowAllowingStateLoss();
}
}
activity's layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="false"
android:background="#color/white"
android:stateListAnimator="#drawable/appbar_shadow"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/green"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title=""
app:titleEnabled="false">
<include
layout="#layout/appbar_collapsing_part"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="?attr/actionBarSize"
app:layout_scrollFlags="scroll|exitUntilCollapsed" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/green"
android:stateListAnimator="#drawable/appbar_shadow"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:theme="#style/ToolbarMenuItemsBackGroundTheme">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/title_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_toStartOf="#+id/star_img"
android:ellipsize="end"
android:fontFamily="sans-serif-medium"
android:gravity="center_vertical"
android:maxLines="1"
android:textColor="#color/colorPrimaryDark"
android:textSize="19sp" />
<ImageView
android:id="#+id/star_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:layout_marginEnd="24dp"
android:padding="10dp"
android:src="#drawable/ic_favorite_filled" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:background="#45b0b2"
android:visibility="gone"
app:tabBackground="#drawable/backgr_blue_transparent_selector"
app:tabGravity="center"
app:tabIndicatorColor="#color/colorPrimaryDark"
app:tabIndicatorHeight="2dp"
app:tabMinWidth="500dp"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/colorPrimaryDark"
app:tabTextAppearance="#style/CustomTabLayout"
app:tabTextColor="#color/green" />
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/fragment_content_holder"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/blue"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.v4.view.ViewPager
android:id="#+id/view_pager_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
Fragment 1:
public class MenuFragment1 extends Fragment {
public SomeCustomData transferedDataFromActivity;
private TextView data_1_txt;
public static MenuFragment1 newInstance(SomeCustomData data) {
Log.d("TEST", "MenuFragment1.newInstance");
MenuFragment1 fragment = new MenuFragment1();
Bundle args = new Bundle();
args.putSerializable("DATA_FROM_ACTIVITY", data);
fragment.setArguments(args);
return fragment;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.d("TEST", "MenuFragment1.onCreate");
if (getArguments() != null) {
this.transferedDataFromActivity = (SomeCustomData) getArguments().getSerializable("DATA_FROM_ACTIVITY");
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.d("TEST", "MenuFragment1.onCreateView");
View v = inflater.inflate(R.layout.menu_fragment_1, container, false);
data_1_txt = (TextView) v.findViewById(R.id.data_1_txt);
setupInOnCreateView();
return v;
}
protected void setupInOnCreateView() {
Log.d("TEST", "MenuFragment1.setupInOnCreateView");
//initialization of all view elements of layout with data is happens here.
setupData(transferedDataFromActivity);
}
public void setupData(SomeCustomData data) {
Log.d("TEST", "MenuFragment1.setupData");
this.transferedDataFromActivity = data;
if (transferedDataFromActivity != null) {
data_1_txt.setText(transferedDataFromActivity.Name);
}
}
}
Fragment 1 layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/green"
android:orientation="vertical">
<TextView
android:id="#+id/data_1_txt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/yellow"
android:text="Test"
android:textSize="20sp" />
<include layout="#layout/description_layout" />
</LinearLayout>
Fragment 2:
public class MenuFragment2 extends Fragment {
public static MenuFragment2 newInstance() {
Log.d("TEST", "MenuFragment2.newInstance");
MenuFragment2 fragment = new MenuFragment2();
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
Log.d("TEST", "MenuFragment2.onCreateView");
View v = inflater.inflate(R.layout.menu_fragment_2, container, false);
setupInOnCreateView();
return v;
}
protected void setupInOnCreateView() {
Log.d("TEST", "MenuFragment2.setupInOnCreateView");
//initialization of all view elements of layout with data is happens here.
}
}
Fragment 2 layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/comments_scrollable_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:visibility="visible">
<LinearLayout
android:id="#+id/comments_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#color/yellow" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#color/blue" />
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#color/yellow" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
TabMenuAdapter:
public class TabMenuAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public TabMenuAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mFragmentTitles.add(title);
}
#Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
#Override
public int getCount() {
return mFragments.size();
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitles.get(position);
}
}

Try this
Activity layout
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title=""
app:titleEnabled="false">
<ImageView
android:layout_width="match_parent"
android:layout_height="256dp"
android:scaleType="fitXY"
android:src="#drawable/abc"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
app:layout_anchor="#id/appBar"
app:tabGravity="fill"
app:tabTextColor="#FFFFFF"
app:tabSelectedTextColor="#ff00"
app:tabMode="scrollable"
app:layout_anchorGravity="bottom" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
Activity code
public class MainActivity extends AppCompatActivity {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new BlankFragment(), "TAB-ONE");
adapter.addFragment(new BlankFragment(), "TAB-TWO");
adapter.addFragment(new BlankFragment(), "TAB-THREE");
viewPager.setAdapter(adapter);
}
}
Fragment Code
public class BlankFragment extends Fragment {
public BlankFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
return inflater.inflate(R.layout.fragment_blank, container, false);
}
}
Fragment Layout
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<LinearLayout
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".BlankFragment">
<ImageView
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_margin="5dp"
android:scaleType="centerCrop"
android:src="#drawable/kid_goku" />
<ImageView
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_margin="5dp"
android:scaleType="centerCrop"
android:src="#drawable/kid_goku" />
<ImageView
android:layout_width="match_parent"
android:layout_height="250dp"
android:layout_margin="5dp"
android:scaleType="centerCrop"
android:src="#drawable/kid_goku" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
ViewPagerAdapter code
public class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
You can see the video here CollapsingToolbarLayout WITH TabLayout
You download the complete project from here CollapsingToolbarLayout WITH TabLayout

Try the below layout foryour activity
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/root_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:animateLayoutChanges="false"
android:background="#color/white"
android:stateListAnimator="#drawable/appbar_shadow"
android:theme="#style/AppTheme.AppBarOverlay"
tools:targetApi="lollipop">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/green"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title=""
app:titleEnabled="false">
<include
layout="#layout/appbar_collapsing_part"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="?attr/actionBarSize"
app:layout_scrollFlags="scroll|exitUntilCollapsed" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/green"
android:stateListAnimator="#drawable/appbar_shadow"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:theme="#style/ToolbarMenuItemsBackGroundTheme"
tools:targetApi="lollipop">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/title_txt"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_toStartOf="#+id/star_img"
android:ellipsize="end"
android:fontFamily="sans-serif-medium"
android:gravity="center_vertical"
android:maxLines="1"
android:textColor="#color/colorPrimaryDark"
android:textSize="19sp" />
<ImageView
android:id="#+id/star_img"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:layout_marginEnd="24dp"
android:padding="10dp"
android:src="#drawable/ic_favorite_filled" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="wrap_content"
android:layout_height="48dp"
android:layout_marginLeft="16dp"
android:layout_marginRight="16dp"
android:background="#45b0b2"
android:visibility="gone"
app:tabBackground="#drawable/backgr_blue_transparent_selector"
app:tabGravity="center"
app:tabIndicatorColor="#color/colorPrimaryDark"
app:tabIndicatorHeight="2dp"
app:tabMinWidth="500dp"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/colorPrimaryDark"
app:tabTextAppearance="#style/CustomTabLayout"
app:tabTextColor="#color/green" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/fragment_content_holder"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/black"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.v4.view.ViewPager
android:id="#+id/view_pager_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:visibility="gone"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>

Try scrolling to top in the fragment in the view pager by calling scrollView.fullScroll(View.FOCUS_UP) whenever you click on a tab. If your fragment inside the viewpager is scrolled up then your scrolling should work correctly.

You have done it almost correctly. But need some minor tweaks and modifications.
Step 1 : Set some height to your appBar. Say 224dp.
Step 2 : Set match_parent property to CollapsingToolbarLayout height.
Step 3 : Set following scroll flags to the CollapsingToolbarLayout
`app:layout_scrollFlags = "scroll|enterAlways|enterAlwaysCollapsed"`
Step 4 : Set the toolbar collapsemode to none
Check if it works fine. Let me know.

I have spend a lot of time investigating my issue with AppBar + Collapsing Layouts. And what I did find out is that it's a bug in google support library. So I created the issue for google and they assigned it to one of developers: https://issuetracker.google.com/issues/78686882
But to solve this issue right now I made a workaround - if users will get stuck with scrolling on collapsing part of the layout - they will probably try to click on one of tabs in my TabLayout. So I added code to auto collapse with animation collapsing part of layout: appBarLayout.setExpanded(false, true);
Here is the code:
tabLayout.addOnTabSelectedListener(new ViewPagerOnTabSelectedListener(viewPagerLayout) {
#Override
public void onTabSelected(TabLayout.Tab tab) {
appBarLayout.setExpanded(false, true);
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
//no ui effects
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
appBarLayout.setExpanded(false, true);
}
});

To solve this issue, there is a workaround to do on the AppBarLayout :
class CustomAppBarLayout #JvmOverloads constructor(
context: Context,
attrs: AttributeSet? = null,
defStyleAttr: Int = 0
) : AppBarLayout(context, attrs, defStyleAttr) {
override fun getBehavior(): CoordinatorLayout.Behavior<AppBarLayout> {
return Behavior().also {
it.setDragCallback(object : Behavior.DragCallback() {
override fun canDrag(appBarLayout: AppBarLayout) = true
})
}
}
}
Found here : https://github.com/material-components/material-components-android/issues/1878

Content not shown in Fragment TabLayout Android

I have spent the whole day trying to fix this but I couldn't.
In my android application, I have a mainActivity HomePageServices, which has 3 tabs : HomeActivity, ProfileActivity, and SettingsActivity.
These tabs are Fragments called by TabLayout and ViewPager.
The transition between tabs works perfectly, but the problem is I have nothing displayed in any of the fragments!
I want to dispaly a RecyclerView with a GridLayout of cards in HomeActivity.
Here is what I have done so far:
HomePageServices:
public class HomePageServices extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ActionBar actionBar = getSupportActionBar();
actionBar.hide();
//Toolbar
initCollapsingToolbar();
//tabs
TabLayout tabLayout = (TabLayout) findViewById(R.id.tab_layout);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
final ViewPager viewPager = (ViewPager) findViewById(R.id.pager);
final PagerAdapter adapter = new PagerAdapter
(getSupportFragmentManager(), tabLayout.getTabCount());
viewPager.setAdapter(adapter);
viewPager.addOnPageChangeListener(new
TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.setOnTabSelectedListener(new TabLayout.OnTabSelectedListener() {
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
});
}
/**
* Initializing collapsing toolbar
* Will show and hide the toolbar title on scroll
*/
private void initCollapsingToolbar() {
final CollapsingToolbarLayout collapsingToolbar =
(CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
collapsingToolbar.setTitle(" ");
AppBarLayout appBarLayout = (AppBarLayout) findViewById(R.id.appbar);
appBarLayout.setExpanded(true);
// hiding & showing the title when toolbar expanded & collapsed
appBarLayout.addOnOffsetChangedListener(new AppBarLayout.OnOffsetChangedListener() {
boolean isShow = false;
int scrollRange = -1;
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int verticalOffset) {
if (scrollRange == -1) {
scrollRange = appBarLayout.getTotalScrollRange();
}
if (scrollRange + verticalOffset == 0) {
collapsingToolbar.setTitle(getString(R.string.app_name));
isShow = true;
} else if (isShow) {
collapsingToolbar.setTitle(" ");
isShow = false;
}
}
});
}
}
HomePageServices XML layout:
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white"
android:fitsSystemWindows="true"
>
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:expandedTitleTextAppearance="#android:color/transparent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ImageView
android:id="#+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
android:layout_alignParentTop="true"
android:layout_alignParentStart="true" />
<TextView
android:id="#+id/love_music"
android:layout_width="237dp"
android:layout_height="wrap_content"
android:text="#string/backdrop_title"
android:textColor="#android:color/white"
android:textSize="#dimen/backdrop_title"
android:gravity="center_horizontal|center"
android:layout_gravity="center_horizontal|center"
android:layout_centerHorizontal="true" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:layout_centerVertical="true">
<android.support.design.widget.TabLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:id="#+id/tab_layout">
<android.support.design.widget.TabItem
android:icon="#drawable/ic_home_white_24dp"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<android.support.design.widget.TabItem
android:icon="#drawable/ic_perm_identity_white_24dp"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
<android.support.design.widget.TabItem
android:icon="#drawable/ic_settings_white_24dp"
android:layout_height="match_parent"
android:layout_width="match_parent"/>
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="fill_parent"
android:layout_below="#id/tab_layout"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.v7.widget.Toolbar>
</RelativeLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
PagerAdapter:
public class PagerAdapter extends FragmentStatePagerAdapter {
int mNumOfTabs;
public PagerAdapter(FragmentManager fm, int NumOfTabs) {
super(fm);
this.mNumOfTabs = NumOfTabs;
}
#Override
public Fragment getItem(int position) {
switch (position) {
case 0:
ProfileActivity tab1 = new ProfileActivity();
return tab1;
case 1:
SettingsActivity tab2 = new SettingsActivity();
return tab2;
case 2:
HomeActivity tab3=new HomeActivity();
return tab3;
default:
return null;
}
}
#Override
public int getCount() {
return mNumOfTabs;
}
}
HomeActivity
public class HomeActivity extends Fragment {
private RecyclerView recyclerView;
public static ServicesAdapter homeAdapter;
public static List<Service> serviceList;
final static String ADD_NEW_ITEM_TYPE="add new item";
public HomeActivity () {
//empty constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//cards
View rootView=inflater.inflate(R.layout.activity_home2, container, false);
TextView tt= (TextView) rootView.findViewById(R.id.textView3);
recyclerView = (RecyclerView) rootView.findViewById(R.id.recycler_view);
serviceList = new ArrayList<>();
homeAdapter = new ServicesAdapter(this.getContext(), serviceList);
RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager(getActivity(), 2);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.addItemDecoration(new GridSpacingItemDecoration(2, dpToPx(10), true));
recyclerView.setItemAnimator(new DefaultItemAnimator());
initServices();
recyclerView.setAdapter(homeAdapter);
Log.d("show me what you got", serviceList.toString());
Toast.makeText(this.getContext(),"Hiiiiiiiiiiiiiiii from the other side",Toast.LENGTH_SHORT).show();
return rootView;
}
public static class GridSpacingItemDecoration extends RecyclerView.ItemDecoration {
int spanCount;
int spacing;
boolean includeEdge;
public GridSpacingItemDecoration(int spanCount, int spacing, boolean includeEdge) {
this.spanCount = spanCount;
this.spacing = spacing;
this.includeEdge = includeEdge;
}
}
private int dpToPx(int dp) {
Resources r = getResources();
return Math.round(TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, dp, r.getDisplayMetrics()));
}
public void initServices () {
Service a = new Service(ADD_NEW_ITEM_TYPE);
serviceList.add(a);
//just for testing
a = new Service("Signaler a dysfonctionnement");
serviceList.add(a);
a = new Service("Activités inter-employés");
serviceList.add(a);
homeAdapter.notifyDataSetChanged();
}
}
HomeActivity XML layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/activity_home2"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="HomeActivity">
<include layout="#layout/content_main"
/>
<TextView
android:text="TextView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_alignParentStart="true"
android:layout_marginStart="42dp"
android:id="#+id/textView3" />
</RelativeLayout>
And finally the RecyclerView layout:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="HomePage.HomeActivity"
tools:showIn="#layout/activity_home2">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:scrollbars="vertical"
android:paddingLeft="5dp" />
</RelativeLayout>
PS: Before creating the tabs, the RecyclerViewer successfully displayed the cards in an Activity without any problems.

How to create a Fragment over the Viewpager in android?

Explanation:
I tried more but i failed to find the how to set the transparent fragment over the Viewpager. I am working in application. The requirement of my client is who will make a application like below url
https://play.google.com/store/search?q=munchery&hl=en
In above url application. In this application they were added more functionality like navigationDrawer, Tabs with viewpager and etc.
One thing is when i click on the actionBar Today's menu it's open something. I am not able to recognized to find what it actually open while i click on actionBar in the Munchery application.
I tried to implement but not implemented as same as the munchery application.
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.millu.whatsappdemo.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" >
<TextView
android:id="#+id/action_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:layout_marginLeft="25dp"
android:layout_marginRight="25dp"
android:textSize="20sp"
android:clickable="true"
android:textColor="#FFFFFF"
android:text="Text view"
android:drawableRight="#drawable/ic_up_arrow">
</TextView>
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorPrimary"
app:tabMode="fixed"
app:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
MainActivity.java
public class MainActivity extends AppCompatActivity {
public TextView action_text;
public Toolbar toolbar;
TabLayout tabs;
ViewPager viewPager;
List<Fragment> fragmentList;
List<String> tab_title;
boolean flag=false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
tabs = (TabLayout) findViewById(R.id.tabs);
viewPager = (ViewPager) findViewById(R.id.viewpager);
action_text = (TextView) toolbar.findViewById(R.id.action_text);
fragmentList = new ArrayList<>();
tab_title = new ArrayList<>();
tab_title.add("ONE");
tab_title.add("TWO");
fragmentList.add(new OneFragment());
fragmentList.add(new TwoFragment());
ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager(), fragmentList, tab_title);
viewPager.setAdapter(viewPagerAdapter);
viewPager.setCurrentItem(0);
tabs.setupWithViewPager(viewPager);
action_text.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Fragment fragment=new ThirdFragment();
FragmentTransaction fragmentTransaction=getSupportFragmentManager().beginTransaction();
if(!fragment.isHidden()) {
fragmentTransaction.replace(R.id.container,fragment);
flag=true;
}
else{
fragmentTransaction.remove(fragment);
flag=false;
}
fragmentTransaction.commit();
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()){
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}
In above code i set the flat onClick of the textview over the actionBar for hiding and showing the fragment. In my demo the problem is it show the tab when my third fragment is open and it does not hide.
Please help me to recognized what is it open on click of the actionBar?

Try the code as below: activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".ScrollingActivity">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay">
<TextView
android:id="#+id/action_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="25dp"
android:layout_marginRight="25dp"
android:clickable="true"
android:drawableRight="#mipmap/ic_launcher"
android:gravity="center"
android:text="Text view"
android:textColor="#FFFFFF"
android:textSize="20sp"></TextView>
</android.support.v7.widget.Toolbar>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbar">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/white"
app:tabGravity="fill"
app:tabMode="fixed" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/tabs"
android:background="#android:color/white" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/reltv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/toolbar"
android:background="#80ffffff"
android:visibility="gone">
<RelativeLayout
android:id="#+id/reltv2"
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#android:color/white">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
android:text="Do whatever you like it here."
android:textAppearance="?attr/textAppearanceLargePopupMenu" />
<View
android:layout_width="match_parent"
android:layout_height="1dp"
android:layout_alignParentBottom="true"
android:background="#android:color/darker_gray" />
</RelativeLayout>
</RelativeLayout>
</RelativeLayout>
And your ManiActivity.java as below:
public class MainActivity extends AppCompatActivity {
public TextView action_text;
public Toolbar toolbar;
TabLayout tabs;
ViewPager viewPager;
List<Fragment> fragmentList;
List<String> tab_title;
boolean flag = false;
RelativeLayout reltv;
RelativeLayout reltv2;
boolean isShown = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
tabs = (TabLayout) findViewById(R.id.tabs);
viewPager = (ViewPager) findViewById(R.id.viewpager);
action_text = (TextView) toolbar.findViewById(R.id.action_text);
reltv = (RelativeLayout) findViewById(R.id.reltv);
reltv2 = (RelativeLayout) findViewById(R.id.reltv2);
fragmentList = new ArrayList<>();
tab_title = new ArrayList<>();
tab_title.add("ONE");
tab_title.add("TWO");
fragmentList.add(new OneFragment());
fragmentList.add(new TwoFragment());
ViewPagerAdapter viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager(), fragmentList, tab_title);
viewPager.setAdapter(viewPagerAdapter);
viewPager.setCurrentItem(0);
tabs.setupWithViewPager(viewPager);
action_text.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (!isShown) {
isShown=true;
reltv.setVisibility(View.VISIBLE);
}else {
isShown=false;
reltv.setVisibility(View.GONE);
}
}
});
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_scrolling, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
}

First, you should use some translucent or transparent colour for the android: background of parent's attribute in the fragment layout e.g DayFragment . This is the fragment you will inflate in the overlay FrameLayout.
For a smooth inflation of that fragment, you can use custom animation to make the transition smooth like in the Munchery app(uses slide from top animation)
protected void replaceFragment(int containerViewId, Fragment fragment, boolean isAddToBackStack, boolean isAnimateTransition) {
String backStateName = fragment.getClass().getName();
FragmentManager fm = this.getSupportFragmentManager();
boolean fragmentPopped = fm.popBackStackImmediate(backStateName, 0);
if (!fragmentPopped && getSupportFragmentManager().findFragmentByTag(backStateName) == null) {
FragmentTransaction ft = fm.beginTransaction();
if(isAnimateTransition) {
animateFragmentTransition(ft);
}
ft.replace(containerViewId, fragment, backStateName);
if (isAddToBackStack) {
ft.addToBackStack(backStateName);
}
ft.commit();
}
}
private void animateFragmentTransition(FragmentTransaction ft) {
ft.setCustomAnimations(R.anim.fade_in, R.anim.fade_out, R.anim.slide_in_from_top, R.anim.slide_out_to_top);
}
DayFragment fragment = DayFragment.newInstance(null);
replaceFragment(R.id.container, fragment, false, true);
Alternitively, you can use ObjectAnimators to revael and hide views as you wish. For example:-
private void animate() {
View viewToShiftOut = mNormalModelayoutContainer;
View viewToShiftIn = mEditModelayoutContainer;
ObjectAnimator outAnim = ObjectAnimator.ofFloat(viewToShiftOut, "y", 0, -heightOfScreen);
ObjectAnimator inAnim = ObjectAnimator.ofFloat(viewToShiftIn, "y", heightOfScreen , 0);
outAnim.setDuration(1000);
inAnim.setDuration(1000);
outAnim.start();
inAnim.start();
}

First element in ViewPager is displayed incorrectly

I'm using RecyclerView to display list of elements and from that list u can go to detailed screen, which is view pager fragment. My problem is that first element I navigate to (from RecyclerView) is displayed incorrectly - it has NestedScrollView, which I cannot fully scroll down. If I swype left or right to next pages, they are fine, it's always one that is loaded as first.
My Adapter class is following;
public class ApodViewAdapter extends FragmentStatePagerAdapter {
private ArrayList<APOD> mDataset;
public ApodViewAdapter(FragmentManager fm, ArrayList<APOD> apodsList) {
super(fm);
setData(apodsList);
}
public void setData(ArrayList<APOD> apodsList){
if(apodsList!=null){
this.mDataset= apodsList;
notifyDataSetChanged();
}
}
#Override
public Fragment getItem(int position) {
return new ApodViewFragment().newInstance(mDataset.get(position), position);
}
#Override
public int getCount() {
return mDataset.size();
}
}
Fragment Activity:
public class ApodViewFragment extends Fragment implements DataInterface, AppBarLayout.OnOffsetChangedListener {
private ImageView mApodImageView;
private TextView mTextView;
private Toolbar mToolbar;
private AppBarLayout mAppBarLayout;
private TextView mTitle;
private FrameLayout mContentFl;
private APOD mApodElement;
private static final String KEY_CONTENT = "ApodViewFragment:Content";
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if ((savedInstanceState != null) && savedInstanceState.containsKey(KEY_CONTENT)) {
mApodElement = (APOD) savedInstanceState.getSerializable(KEY_CONTENT);
}
}
#Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putSerializable(KEY_CONTENT, mApodElement);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
ViewGroup rootView = (ViewGroup) inflater.inflate(
R.layout.fragment_apod_material, container, false);
mApodImageView = (ImageView) rootView.findViewById(R.id.apod_view_apod_iv);
mTextView = (TextView) rootView.findViewById(R.id.apod_view_text_tv);
mTitle = (TextView) rootView.findViewById(R.id.apod_fragment_title_tv);
mContentFl = (FrameLayout) rootView.findViewById(R.id.fragment_apod_fl);
mToolbar = (Toolbar) rootView.findViewById(R.id.toolbar);
mAppBarLayout = (AppBarLayout) rootView.findViewById(R.id.app_bar_layout);
mAppBarLayout.addOnOffsetChangedListener(this);
ViewTreeObserver vto = mContentFl.getViewTreeObserver();
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
setHeroImageMaxHeight();
ViewTreeObserver obs = mContentFl.getViewTreeObserver();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
obs.removeOnGlobalLayoutListener(this);
} else {
obs.removeGlobalOnLayoutListener(this);
}
}
});
setData();
return rootView;
}
public static ApodViewFragment newInstance(APOD apodElement, int position) {
ApodViewFragment fragment = new ApodViewFragment();
fragment.mApodElement = apodElement;
return fragment;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void saveData(APOD apodElement) {
}
#Override
public void readData() throws IOException {
}
private void setData() {
if(mApodElement.getMedia_type().equals("video")){
Picasso.with(getActivity()).load(R.drawable.videoplaceholder).into(mApodImageView);
}else{
Picasso.with(getActivity()).load(mApodElement.getUrl()).into(mApodImageView);
}
mTextView.setText(mApodElement.getExplanation());
mTitle.setText(mApodElement.getTitle());
}
private void setHeroImageMaxHeight(){
int screenHeight = ImageHelper.getDisplayHeight(getActivity());
mToolbar.getLayoutParams().height = screenHeight - mContentFl.getHeight();
mToolbar.requestLayout();
}
#Override
public void onOffsetChanged(AppBarLayout appBarLayout, int offset) {
float minimalTextSize = getActivity().getResources().getDimensionPixelSize(R.dimen.apod_view_title_scrolling_text_size);
float maximumTextSize = getActivity().getResources().getDimensionPixelSize(R.dimen.apod_view_title_default_text_size);
float absolut_offset = Math.abs(offset);
float text_size_difference = maximumTextSize - minimalTextSize;
float scale = (absolut_offset) / (appBarLayout.getHeight() - absolut_offset);
if (offset < 0) {
float result = maximumTextSize - (scale * text_size_difference);
mTitle.setTextSize(FontHelper.pixelsToSp(getActivity(), result));
} else {
mTitle.setTextSize(FontHelper.pixelsToSp(getActivity(), maximumTextSize));
}
}
}
And XML layout file
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/apod_fragment_ctl"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:expandedTitleMarginStart="16dp"
android:fitsSystemWindows="true">
<ImageView
android:id="#+id/apod_view_apod_iv"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
<RelativeLayout
android:layout_width="wrap_content"
android:fitsSystemWindows="true"
android:layout_height="wrap_content">
<TextView
android:id="#+id/apod_fragment_title_tv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textColor="#android:color/white"
android:textSize="#dimen/apod_view_title_default_text_size"
android:layout_alignParentBottom="true"
app:layout_collapseMode="pin"
/>
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/scroll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:clipToPadding="false"
android:background="#android:color/holo_purple"
android:fitsSystemWindows="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/fragment_apod_fl"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.CardView
android:id="#+id/cardview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_margin="8dp"
android:layout_gravity="center_vertical"
app:cardUseCompatPadding="true">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="#+id/title"
android:text="TITLE"
android:layout_width="match_parent"
android:layout_height="wrap_content" android:textAppearance="#style/TextAppearance.AppCompat.Headline"/>
<TextView
android:id="#+id/apod_view_text_tv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:textAppearance="#style/TextAppearance.AppCompat.Body1"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</FrameLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
app:layout_anchor="#id/cardview"
app:layout_anchorGravity="top|right|end"
android:src="#drawable/ic_rocket_em_blank"
android:layout_margin="16dp"
app:backgroundTint="#android:color/holo_purple"
style="#style/FabStyle"/>
</android.support.design.widget.CoordinatorLayout>
I'd say that reason must be somewhere in Adapter or fragment's methods, which create new Fragment, but can't really find it. Any help appreciated, cheers!

Develop Reference

The Android operating system is a mobile operating system that was developed by Google (GOOGL?) to be primarily used for touchscreen devices, cell phones, and tablets.

Recyclerview in Coordinatorlayout cutting off last item - android

Remove this line from Event XML. android:fitsSystemWindows="true" And everything would be good to go.

override the fragment's setUserVisibleHint(),call view?.requestlayout() override fun setUserVisibleHint(isVisibleToUser: Boolean) { view?.requestLayout() super.setUserVisibleHint(isVisibleToUser) }

collapsingToolbarLayout.setTitle("Events"); this layout is hiding your last Recycler view, when this is shown your last item is hidden, when you set collapsingToolbarLayout.setTitle(""); your last item is visible. So, set padding to parent layout accordingly

Related

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Collapsing AppBarLayout not scrolling with TabLayout and NestedScrollView

Content not shown in Fragment TabLayout Android

How to create a Fragment over the Viewpager in android?

First element in ViewPager is displayed incorrectly

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