Scrolling in Fragment doesn't work into a TabLayout

Scrolling in Fragment doesn't work into a TabLayout - android

I am stuck with scrolling in a fragment into a tablayout.
This is my MainActivity class
public class Mainctivity extends AppCompatActivity {
private TabLayout tabLayout;
private ViewPager viewPager;
ViewPagerAdapter viewPagerAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager();
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setViewPager(TabLayout.GRAVITY_FILL);
tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager() {
viewPagerAdapter = new ViewPagerAdapter(getSupportFragmentManager());
String [] tabNames = new String[{"Technology","World","Life"} ;
int [] tabTopicIds = new int[]{1,2,3} ;
for(int i=0; i< 7; i++)
{
OneFragment homeFeed = new OneFragment();
Bundle homeArgs = new Bundle();
homeArgs.putString("PAGE_NUMBER",""+tabTopicIds[i]);
homeFeed.setArguments(homeArgs);
viewPagerAdapter.addFragment(homeFeed, tabNames[i]); // note: this line can cause crashes
}
viewPager.setAdapter(viewPagerAdapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>(); // note: this line can cause crashes
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);
}
}
}
And here is My activity_main 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:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dip"
android:background="#color/white"
app:tabIndicatorColor="#color/colorPrimary"
app:pstsIndicatorHeight="3dip"
app:pstsTextAllCaps="false"
app:tabPaddingStart="2dp"
app:tabPaddingEnd="2dp"
app:tabGravity="fill"/>
<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.AppBarLayout>
</android.support.design.widget.CoordinatorLayout>
For each tab there is a FragmentOne class associated with viewPager and this is onCreateView Method of FragmentOne
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View mainView = inflater.inflate(R.layout.activity_main, container, false);
listView = (ListView) mainView.findViewById(R.id.list);
feedItems = new ArrayList<FeedItem>();
listAdapter = new FeedListAdapter(getActivity(), feedItems);
listView.setAdapter(listAdapter);
listView.setOnScrollListener(new EndlessScrollListener() {
#Override
public boolean onLoadMore(int page, int totalItemsCount) {
if(totalItemsCount > 150) return false;
return true;
}
#Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
if(!isLoading && firstVisibleItem + visibleItemCount >= totalItemCount && totalItemCount<MAX_ITEM_IN_LIST){
requestToServer(); // request for next items
}
}
});
return mainView;
}
Layout of FragmentOne
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/swipe_refresh_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ListView
android:id="#+id/list"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:divider="#android:color/darker_gray"
android:background="#color/white"
android:dividerHeight="1.0sp"/>
</LinearLayout>
Here I add listView.setOnScrollListener into ListView of FragmentOne but doesn't work scrolling.
But when I FragmentOne put in another Layout like LinearLayout except Tablayout, it works fine.

You have put the viewpager code inside AppBarLayout in activity_main.xml. Cut and Paste the ViewPager outside AppBarLayout. Copy this code in your activity_main.xml. Hope it solves your problem.
<?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:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/white"
app:tabIndicatorColor="#color/colorPrimary"
app:pstsIndicatorHeight="3dip"
app:pstsTextAllCaps="false"
app:tabPaddingStart="2dp"
app:tabPaddingEnd="2dp"
app:tabGravity="fill"/>
</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>

Related

Hide top layout on scrolling up and show on scrolling down (like collapsingToolbarLayout)

I had followed this answer https://stackoverflow.com/a/36796343 and acheived tablayout in mid screen. Now I want to hide top layout on scrolling up and bottom tablayout to be in full screen. Also on scrolling down the page should restore to original position. https://drive.google.com/open?id=0B_sVfcILd-_8UzlXUlBLekFDcWV2eTVJamxYaGkxVXFTVHow
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
app:layout_scrollFlags="scroll|enterAlways"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/top_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<include layout="#layout/display_agents_row"/>
</RelativeLayout>
<RelativeLayout
android:id="#+id/bottom_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.TabLayout
android:id="#+id/pager_header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_gravity="center"
android:layout_marginTop="0dp"
android:background="#color/black"
android:minHeight="60dp"
app:tabGravity="fill"
app:tabIndicatorColor="#color/red"
app:tabMode="fixed"
app:tabSelectedTextColor="#color/white"
app:tabTextAppearance="#style/TextAppearance.AppCompat.Small.Inverse" />
<android.support.v4.view.ViewPager
app:layout_behavior="#string/appbar_scrolling_view_behavior"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/pager_header"/>
</RelativeLayout>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
My fragment
public class DisplayPartnerFragment extends Fragment {
Agent agent;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.display_partner, container, false);
agent=new Gson().fromJson(getArguments().getString("agent"),Agent.class);
if (agent!=null){
setData();
((AppCompatActivity) getActivity()).getSupportActionBar().setTitle(""+agent.getName());
}
// Locate the viewpager in activity_main.xml
ViewPager viewPager = (ViewPager) v.findViewById(R.id.pager);
// Set the ViewPagerAdapter into ViewPager
ViewPagerAdapter adapter = new ViewPagerAdapter(getChildFragmentManager());
adapter.addFrag(new SelectServiceFragment(), "About");
adapter.addFrag(new SelectServiceFragment(), "Overview");
viewPager.setAdapter(adapter);
TabLayout mTabLayout = (TabLayout) v.findViewById(R.id.pager_header);
mTabLayout.setupWithViewPager(viewPager);
return v;
}
class ViewPagerAdapter extends FragmentStatePagerAdapter {
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 addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
private void setData() {
}
}

Replace the root LinearLayout with CoordinatorLayout and add app:layout_scrollFlags="scroll|enterAlways" to the top_layout.
EDIT: Also add app:layout_behavior="#string/appbar_scrolling_view_behavior" to the ViewPager.

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

Customize the tab layout with Multiple Level tabs

Hi i am trying to add a sub tablayout for my custom layout as this one:
I have successfully added the tablayout but:
How to add the sublayout as shown below??
As we see in the picture the first sub layout is related to the first tab layout
My layout.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"
xmlns:ads="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.tiger.alahedclub.activity.navigation">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:popupTheme="#style/generalnotitle"
>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:titleTextColor="#android:color/black"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/yellow"
app:popupTheme="#style/generalnotitle">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="#+id/action_bar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_centerHorizontal="true"
android:text="#string/app_name"
android:textColor="#android:color/black"
android:textSize="24sp" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:background="#color/yellow"
app:tabTextColor="#android:color/black"
app:tabTextAppearance="#style/MineCustomTabText"
app:tabSelectedTextColor="#1B5E20"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabIndicatorHeight="2dp"
app:tabMaxWidth="0dp"
app:tabMode="fixed"
app:tabGravity="fill" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#B71C1C"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.design.widget.CoordinatorLayout>
UPDATED :
activity holding the viewpager:
public class Detail_match extends AppCompatActivity {
private TabLayout tabLayout,tabLayout2;
private ViewPager viewPager;
int onStartCount = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
onStartCount = 1;
if (savedInstanceState == null) // 1st time
{
this.overridePendingTransition(R.anim.anim_slide_in_left,
R.anim.anim_slide_out_left);
} else // already created so reverse animation
{
onStartCount = 2;
}
setContentView(R.layout.activity_detail_match);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayShowTitleEnabled(false);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDisplayShowHomeEnabled(true);
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
tabLayout2 = (TabLayout) findViewById(R.id.tabs2);
}
#Override
protected void onPause() {
super.onPause();
}
#Override
protected void onStart() {
// TODO Auto-generated method stub
super.onStart();
if (onStartCount > 1) {
this.overridePendingTransition(R.anim.anim_slide_in_right,
R.anim.anim_slide_out_right);
} else if (onStartCount == 1) {
onStartCount++;
}
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new FiveFragment(), getString(R.string.lineup));
adapter.addFrag(new SixFragment(), getString(R.string.stats));
viewPager.setAdapter(adapter);
}
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 addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
My fragment five.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/coordinatorLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v4.widget.SwipeRefreshLayout
android:id="#+id/swipe_refresh"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<ScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_post"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</ScrollView>
</android.support.v4.widget.SwipeRefreshLayout>
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

In your Viewpager Fragment : That you are returning Fragment getItem(int position)
you need to add a Tablayout and a viewpager in xml
So in your FiveFragment xml :
<LinearLayout
android:id="#+id/main_layout"
android:orientation="vertical"
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">
<!-- our tablayout to display tabs -->
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
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"/>
<!-- View pager to swipe views -->
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="fill_parent"/>
</LinearLayout>
And in onCreateView() of FiveFragment set up the viewpager with Tablayout..
Like:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.your_layout, container, false);
viewPager = (ViewPager) view.findViewById(R.id.pager);
addTabs(viewPager);
tabLayout = (TabLayout) view.findViewById(R.id.tabLayout);
tabLayout.setupWithViewPager(viewPager);
}
private void addTabs(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getActivity().getSupportFragmentManager());
adapter.addFrag(new Sublayout1(), "ONE");
adapter.addFrag(new Sublayout2(), "TWO");
viewPager.setAdapter(adapter);
}
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 addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
So each Fragment contain a Nested Tabs of item to control.

Android studio ActionBar with Tabs inside a fragment

I have created a project with the navigation drawer template and I have different fragments for each navigation item.
I have an ActionBar with Tabs on one of the fragments and I have set the width to match parent but when I run it the tabs doesn't stick to the actionbar and the width is also not matching the parent. check the code below:
XML:
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.yardbird.justice.yardbird.Fragments.DrinksFragment">
<android.support.design.widget.AppBarLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="fixed"
app:tabGravity="fill"/>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="47dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
Java:
public class DrinksFragment extends Fragment {
public DrinksFragment() {
// Required empty public constructor
}
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_drink, container, false);
TabLayout tabLayout = (TabLayout) view.findViewById(R.id.tab_layout);
tabLayout.addTab(tabLayout.newTab().setText("Frabment 1"));
tabLayout.addTab(tabLayout.newTab().setText("Frabment 1"));
final ViewPager viewPager = (ViewPager) view.findViewById(R.id.viewPager);
viewPager.setAdapter(new CustomAdapter(getFragmentManager(),
tabLayout.getTabCount()));
viewPager.addOnPageChangeListener(new TabLayout.TabLayoutOnPageChangeListener(tabLayout));
tabLayout.addOnTabSelectedListener(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) {
}
});
return view;
}
private class CustomAdapter extends FragmentStatePagerAdapter {
int numberOfTabs;
public CustomAdapter(FragmentManager fragmentManager, int numberOfTabs) {
super( fragmentManager);
this.numberOfTabs = numberOfTabs;
}
#Override
public Fragment getItem(int position) {
switch (position)
{
case 0:
Tab1Fragment tab1 = new Tab1Fragment();
return tab1;
case 1:
Tab2Fragment tab2 = new Tab2Fragment();
return tab2;
default:
return null;
}
}
#Override
public int getCount() {
return numberOfTabs;
}
}
}
Screen Shot of the app:
Can anyone help fix that?

Try this:
<?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:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<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/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways" />
<android.support.design.widget.TabLayout
android:id="#+id/tab_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</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>

layout architecture :Header plus ViewPager using tablayout

i want to do as per image . so basically
screen -
full area is scrollable . top is layout where horizontal scroll is present . below that Tab layout and view pager
2.Screen -
when user scroll down then header part which is horizontal scroll will go (up not visible) and tab layout will be sticky header it always at top and only his view pager is swappable .but when again he scroll up then top header should come
i am ref this https://github.com/kmshack/Android-ParallaxHeaderViewPager but its not as per my need

Try this library:
https://github.com/noties/Scrollable
I think it's what you want.

activity_tab_layout.xml
<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.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
android:background="#color/colorPrimary"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/material_deep_teal_500"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<!--<android.support.v7.widget.Toolbar-->
<!--android:id="#+id/toolbar"-->
<!--android:layout_width="match_parent"-->
<!--android:layout_height="?attr/actionBarSize"-->
<!--android:background="?attr/colorPrimary"-->
<!--app:layout_scrollFlags="scroll|enterAlways"-->
<!--app:popupTheme="#style/ThemeOverlay.AppCompat.Dark">-->
<!--</android.support.v7.widget.Toolbar>-->
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content">
</HorizontalScrollView>
</LinearLayout>
</LinearLayout>
</android.support.design.widget.CollapsingToolbarLayout>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:foregroundGravity="center_horizontal"
app:layout_collapseMode="pin"
app:tabGravity="center"
app:tabMode="scrollable"
app:tabSelectedTextColor="#color/colorAccent"
app:tabTextColor="#color/colorPrimary" />
</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" />
ActivityCode.java
public class ActivityCode extends AppCompatActivity {
TabLayout tabs;
ViewPager viewPager;
Toolbar toolbar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cancer_type);
// your find view by id code
toolbar.setTitle(title);
setSupportActionBar(toolbar);
getSupportActionBar().setHomeButtonEnabled(true);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
setupViewPager(viewPager);
tabs.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
Fragment facts = new FRAGMENT_CLASS();
adapter.addFragment(facts, "Title");
Fragment facts = new FRAGMENT_CLASS();
adapter.addFragment(facts, "Title");
Fragment facts = new FRAGMENT_CLASS();
adapter.addFragment(facts, "Title");
viewPager.setAdapter(adapter);
}
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);
}
}
}

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.

Scrolling in Fragment doesn't work into a TabLayout - android

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