android fragment not showing up beside the drawer

android fragment not showing up beside the drawer - android

why my WelcomeFragment is not showing up inside my main_container, and all i get is a green screen like show in the images below:
my code:
MainActivity
public class MainActivity extends AppCompatActivity implements WelcomeFragment.ArrowBtnListener
, SetupAccountFragment.BtnOkListener {
FragmentManager fm;
private DrawerLayout drawer;
// for account setup fragment
#Override
public void btnOkMethod() {
FoodListFragment foodListFragment = new FoodListFragment();
fm.beginTransaction()
.replace(R.id.main_container, foodListFragment)
.commit();
}
// for account setup fragment
// for welcome fragment
#Override
public void lockDrawer() {
drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_LOCKED_CLOSED);
}
#Override
public void unlockDrawer() {
drawer.setDrawerLockMode(DrawerLayout.LOCK_MODE_UNLOCKED);
}
#Override
public void onArrowClick() {
SetupAccountFragment setupAccountFragment = new SetupAccountFragment();
fm.beginTransaction()
.replace(R.id.main_container, setupAccountFragment)
.addToBackStack(null)
.commit();
}
// for welcome fragment
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
drawer = findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar,
R.string.drawer_open, R.string.drawer_close);
drawer.addDrawerListener(toggle);
toggle.syncState();
fm = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.drawer_fragment_container, new DrawerListFragment());
fragmentTransaction.commit();
Fragment fragment = fm.findFragmentById(R.id.main_container);
if (fragment == null) {
// adding fragment to main container
fragment = new WelcomeFragment();
fm.beginTransaction()
.replace(R.id.main_container, fragment)
.addToBackStack(null)
.commit();
}
}
// make back button close navigation drawer
#Override
public void onBackPressed() {
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
}
activity_main
<androidx.drawerlayout.widget.DrawerLayout 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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
tools:openDrawer="start">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:elevation="4dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<FrameLayout
android:id="#+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:id="#+id/drawer_fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true" />
WelcomeFragment
public class WelcomeFragment extends Fragment {
private static final String TAG = "WelcomeFragment";
private Button btnArrow;
interface ArrowBtnListener {
void onArrowClick();
void lockDrawer();
void unlockDrawer();
}
private ArrowBtnListener arrowBtnListener;
#Override
public void onAttach(#NonNull Context context) {
super.onAttach(context);
try {
arrowBtnListener = (ArrowBtnListener) context;
} catch (ClassCastException e) {
Log.d(TAG, "onAttach: " + e.getMessage());
}
}
public WelcomeFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
//arrowBtnListener.lockDrawer();
return inflater.inflate(R.layout.fragment_welcome, container, false);
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
btnArrow = view.findViewById(R.id.welcome_frag_btn_arrow);
}
#Override
public void onActivityCreated(#Nullable Bundle savedInstanceState) {
super.onActivityCreated(savedInstanceState);
btnArrow.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
arrowBtnListener.onArrowClick();
}
});
}
}
fragment_welcome
<androidx.constraintlayout.widget.ConstraintLayout 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=".WelcomeFragment">
<ImageView
android:id="#+id/imageView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:background="#drawable/image_welcome"
android:scaleType="fitXY"
tools:layout_editor_absoluteX="0dp"
tools:layout_editor_absoluteY="0dp" />
<ImageView
android:id="#+id/imageView2"
android:layout_width="180dp"
android:layout_height="131dp"
android:layout_marginTop="180dp"
android:background="#mipmap/ic_launcher"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="#+id/imageView" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:text="restaurant name"
android:textAlignment="center"
android:textColor="#860707"
android:textSize="36sp"
android:textStyle="bold"
app:layout_constraintTop_toBottomOf="#+id/imageView2"
tools:layout_editor_absoluteX="16dp" />
<Button
android:id="#+id/welcome_frag_btn_arrow"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginBottom="16dp"
android:background="#drawable/welcome_arrow"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent" />

Change your activity_main.xml like below:
<androidx.drawerlayout.widget.DrawerLayout 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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity"
tools:openDrawer="start">
<LinearLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#color/colorPrimary"
android:elevation="4dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
<FrameLayout
android:id="#+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
<FrameLayout
android:id="#+id/drawer_fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true" />
</androidx.drawerlayout.widget.DrawerLayout>

Related

AccelerateInterpolator sync state

im new in android developer world and need help, i need access state of pressed on toolbar from any button which will be seen after press on Toolbar, i want close it or hide open view on button press, Please advise

My code :
#Override
public View onCreateView(
#NonNull LayoutInflater inflater, ViewGroup container, Bundle
savedInstanceState) {
// Inflate the layout for this fragment with the ProductGrid theme
View view = inflater.inflate(R.layout.product_grid_fragment, container, false);
// Set up the tool bar
setUpToolbar(view);
esas_btn = (Button)view.findViewById(R.id.esas_btn);
mq = (Button)view.findViewById(R.id.mq_btn);
sur = (Button)view.findViewById(R.id.sure_btn);
da = (Button)view.findViewById(R.id.dua_btn);
esas_btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Begin the transaction
setFragment(new EsasFragment());
}
}); mq.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Begin the transaction
setFragment(new MQMaterialFragment());
}
}); sur.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Begin the transaction
setFragment(new SurelerFragment());
}
}); da.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Begin the transaction
setFragment(new DualarFragment());
}
});
return view;
}
private void setFragment(Fragment fragment){
FragmentTransaction ft = getFragmentManager().beginTransaction();
ft.replace(R.id.content_frame, fragment, "visible_fragment");
ft.addToBackStack(null);
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
ft.commit(); toolbar.setNavigationIcon(getResources().getDrawable(R.drawable.shr_branded_menu));
}
private void setUpToolbar(View view) {
toolbar = view.findViewById(R.id.app_bar);
AppCompatActivity activity = (AppCompatActivity) getActivity();
if (activity != null) {
activity.setSupportActionBar(toolbar);
}
toolbar.setNavigationOnClickListener(new NavigationIconClickListener(
getContext(),
view.findViewById(R.id.product_grid),
new AccelerateInterpolator(),
getContext().getResources().getDrawable(R.drawable.bran_menu),
getContext().getResources().getDrawable(R.drawable.close_menu))); // Menu close icon
}

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
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:clipChildren="false"
android:clipToPadding="false"
tools:context=".SelectionGridFragment">
<LinearLayout
style="#style/Widget.Shrine.Backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_horizontal"
android:orientation="vertical"
android:paddingTop="88dp">
<include layout="#layout/shr_backdrop" />
</LinearLayout>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:elevation="0dp">
<android.support.v7.widget.Toolbar
android:id="#+id/app_bar"
style="#style/Widget.Shrine.Toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:paddingStart="12dp"
android:paddingLeft="12dp"
android:paddingEnd="12dp"
android:paddingRight="12dp"
app:contentInsetStart="0dp"
app:navigationIcon="#drawable/shr_branded_menu"
app:title="#string/app_name" />
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:id="#+id/product_grid"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="56dp"
android:background="#color/productGridBackgroundColor"
android:elevation="8dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<FrameLayout
android:id="#+id/content_frame"
android:layout_marginLeft="30dp"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

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

Why this tab layout doesn't stay in the bottom?

I've created my application with Navigation Drawer. In my Activity I put this code:
public class MenuActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener
{
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_menu);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close)
{
public void onDrawerOpened(View view)
{
super.onDrawerOpened(view);
}
public void onDrawerClosed(View v)
{
super.onDrawerClosed(v);
}
};
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
onNavigationItemSelected(navigationView.getMenu().getItem(0));
navigationView.setNavigationItemSelectedListener(this);
}
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
public boolean onOptionsItemSelected(MenuItem item)
{
int id = item.getItemId();
if (id == R.id.action_settings)
{
return true;
}
return super.onOptionsItemSelected(item);
}
public boolean onNavigationItemSelected(MenuItem item) {
Fragment fragment = null;
String title = null;
int id = item.getItemId();
Class fragmentClass=null;
if (id == R.id.Home)
{
fragmentClass = HomeFragment.class;
title="Home";
}
else if (id == R.id.Profile)
{
fragmentClass= ProfileFragment.class;
title="Profile";
}
try {
fragment = (Fragment) fragmentClass.newInstance();
} catch (InstantiationException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
FragmentManager fragmentManager = getSupportFragmentManager();
fragmentManager.beginTransaction().replace(R.id.content_frame, fragment).commit();
if (getSupportActionBar() != null)
{
getSupportActionBar().setTitle(title);
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
now in the HomeFragment I want to put a tab in the bottom of the screen. So i put this code:
public class HomeFragment extends Fragment {
public static TabLayout tabLayout;
public static ViewPager viewPager;
public static int int_items = 3 ;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View inflatedView = inflater.inflate(R.layout.fragment_home, null);
tabLayout = (TabLayout) inflatedView.findViewById(R.id.tabs);
viewPager = (ViewPager) inflatedView.findViewById(R.id.viewpager);
viewPager.setAdapter(new MyAdapter(getChildFragmentManager()));
tabLayout.post(new Runnable() {
#Override
public void run() {
tabLayout.setupWithViewPager(viewPager);
}
});
return inflatedView;
}
class MyAdapter extends FragmentPagerAdapter {
public MyAdapter(FragmentManager fm) {
super(fm);
}
/**
* Return fragment with respect to Position .
*/
#Override
public Fragment getItem(int position)
{
switch (position){
case 0 : return new SearchFragment();
case 1 : return new CardFragment();
case 2 : return new MapFragment();
}
return null;
}
public int getCount() {
return int_items;
}
This is fragment_home.xml:
<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"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context=".HomeFragment">
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
app:tabGravity="fill"
app:tabMode="fixed"
android:background="#color/material_blue_grey_800"
app:tabIndicatorColor="#color/black_overlay"
app:tabSelectedTextColor="#000"
app:tabTextColor="#FFFFFF"
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true">
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/tabs">
</android.support.v4.view.ViewPager>
</RelativeLayout>
</FrameLayout>
and this the activity xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
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/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="#layout/app_bar_menu"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<FrameLayout
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/containerView">
</FrameLayout>
<android.support.design.widget.NavigationView
android:id="#+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="#layout/nav_header_menu"
app:menu="#menu/activity_menu_drawer" />
</android.support.v4.widget.DrawerLayout>
But finally I get this result:
How could I put this tabLayout in the toolbar?

You don't need to take frame layout for fragment_home as root layout. Simplify your xml file as:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="wrap_content">
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
app:tabGravity="fill"
app:tabMode="fixed"
android:background="#color/material_blue_grey_800"
app:tabIndicatorColor="#color/black_overlay"
app:tabSelectedTextColor="#000"
app:tabTextColor="#FFFFFF"
android:layout_gravity="bottom"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true">
</android.support.design.widget.TabLayout>
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/tabs">
</android.support.v4.view.ViewPager>
</RelativeLayout>

Snackbar displaying on top of Fragment Fab button

I have activity with Textview and below viewpager. In one of the fragments of view pager, I have a fab button. When I am calling the Snackbar on Menu click of Activity, the Snackbar is coming over the fab button. Every thing works fine (fab button is pushed over snack bar) , if the fab button is in activity, but i need it fragment. Please let me know where I am doing mistake
Fragment 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:id="#+id/coordLayoutComments"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/mdtp_white"
>
<android.support.v7.widget.RecyclerView
android:id="#+id/rvComments"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fabComments"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_marginBottom="#dimen/btn_fab_margins"
android:layout_marginRight="#dimen/btn_fab_margins"
android:elevation="6dp"
android:src="#drawable/ic_comment_24_5"
app:borderWidth="0dp"
app:fabSize="mini"
app:pressedTranslationZ="12dp" />
</android.support.design.widget.CoordinatorLayout>
Activity Layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:card_view="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:orientation="vertical"> <android.support.design.widget.CoordinatorLayout
android:id="#+id/coordLayout"
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">
<include
android:id="#+id/newtoolbar"
layout="#layout/toolbar" />
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?attr/actionBarSize"
android:orientation="vertical">
<android.support.v7.widget.CardView
android:id="#+id/cv"
android:layout_width="match_parent"
android:layout_height="120dp"
card_view:cardCornerRadius="5dp"
card_view:cardElevation="2dp"
card_view:contentPadding="10dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical">
<TextView
android:id="#+id/tvTitle"
fontPath="fonts/SourceSansPro-Regular.otf"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:ellipsize="end"
android:textSize="28sp" />
<TextView
android:id="#+id/tvDesc"
fontPath="fonts/Roboto-Italic.ttf"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_marginTop="5dp"
android:gravity="center_horizontal"
android:textSize="15sp"
android:textStyle="normal|italic"
tools:ignore="MissingPrefix" />
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#+id/newtoolbar"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:scrollbars="horizontal" />
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
</RelativeLayout>

In you xml layout, there are two CoordinatorLayouts. One in Activity Layout and the other one in Fragment Layout. Now Snackbar.make() function's first argument is the parent Coordinator Layout in which this Snackbar will be placed, and all the elements of this Coordinator Layout will be affected by the motion/view changes of the Sanckbar. Try and use Fragment Layout's Coordinator Layout as the parent of the Snackbar.

Activity Code
public class HomeActivity extends AppCompatActivity
implements FragmentListener {
private LoadingDialog loadingDialog;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
HomeActivity.this.showSnackbar(view, "Replace with your own action");
}
});
}
#Override
public void showSnackBar(View view, String message) {
Snackbar.make(view,message,Snackbar.LENGTH_LONG).show();
}
}
FragmentListener Code
public interface FragmentListener {
void showSnackBar(View view,String message);
}
Fragment Code
public class MyFragment extends Fragment {
private static final String TAG = MyFragment.class.getSimpleName();
private FragmentListener fragmentListener;
private FloatingActionButton floatingActionButton;
public MyFragment() {
// Required empty public constructor
}
public static MyFragment getInstance(String uniqueId) {
MyFragment MyFragment = new MyFragment();
return MyFragment;
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_surveys, container, false);
floatingActionButton = view.findViewById(R.id.fab);
floatingActionButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
fragmentListner.showSnackBar(floatingActionButton,"hello");
}
});
return view;
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
try {
fragmentListener = (FragmentListener) context;
} catch (Exception e) {
throw new ClassCastException(" must implement OnListItemSelectedListener");
}
}
}
For displaying the Snackbar in Activity and Fragment with FAB you can use this simple approach.
Activity and Fragment parent View should be CoordinatorLayout.
Create FragmentListener and implement in Activity

Android kitkat - AppCompat: Doesn't load fragments in my FrameLayout container.(Using a Navigation drawer)

I have implemented a DrawerLayout with Material Design, using AppCompat and it's working ok. The problem is when I try to load a fragment in the container never appear.. and I don't know why.
Below is my activity class
public class MyActivity extends ActionBarActivity {
private Toolbar toolbar;
private DrawerLayout drawerLayout;
private ActionBarDrawerToggle drawerToggle;
private ListView leftDrawerList;
private ArrayAdapter<String> navigationDrawerAdapter;
private String[] leftSliderData = {"Estaciones", "Favorito", "Contacta"};
private int mCurrentSelectedPosition = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my);
nitView();
if (toolbar != null) {
setSupportActionBar(toolbar);
}
initDrawer();
}
private void nitView() {
leftDrawerList = (ListView) findViewById(R.id.left_drawer);
toolbar = (Toolbar) findViewById(R.id.toolbar);
drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
navigationDrawerAdapter=new ArrayAdapter<String>( MyActivity.this, android.R.layout.simple_list_item_1, leftSliderData);
leftDrawerList.setAdapter(navigationDrawerAdapter);
leftDrawerList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.e("TEST", position + "");
FragmentManager fragmentManager = getFragmentManager();
Fragment fragment = new Fragment();
switch(position) {
case 0:
fragment = new Estacion();
break;
case 1:
fragment = new Favorito();
break;
case 2:
fragment = new Contacta();
break;
}
fragmentManager.beginTransaction()
.replace(R.id.container, fragment)
.commit();
}
});
}
private void initDrawer() {
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
}
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
}
};
drawerLayout.setDrawerListener(drawerToggle);
}
#Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
}
my xml layout
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:orientation="vertical"
android:layout_height="match_parent"
tools:context=".MainActivity">
<include layout="#layout/toolbar" />
<android.support.v4.widget.DrawerLayout
android:layout_width="match_parent"
android:id="#+id/drawerLayout"
android:layout_height="match_parent">
<!-- The main content view -->
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<!-- activity view -->
<RelativeLayout
android:layout_width="match_parent"
android:background="#fff"
android:layout_height="match_parent">
<TextView
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:textColor="#android:color/white"
android:text="Activity Content"
android:layout_height="wrap_content" />
</RelativeLayout>
<!-- navigation drawer -->
<RelativeLayout
android:layout_gravity="left|start"
android:layout_width="match_parent"
android:background="#fff"
android:layout_height="match_parent">
<ListView
android:id="#+id/left_drawer"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:divider="#eee"
android:background="#fff"
android:dividerHeight="1dp" />
</RelativeLayout>
</android.support.v4.widget.DrawerLayout>
Thanks!

your main content view of drawer must be one ViewGroup so you must put all your views as children of one viewgroup so put
<!-- The main content view -->
<FrameLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent" />
as a child of
<!-- activity view -->
<RelativeLayout
android:layout_width="match_parent"
android:background="#fff"
android:layout_height="match_parent">
<TextView
android:layout_centerInParent="true"
android:layout_width="wrap_content"
android:textColor="#android:color/white"
android:text="Activity Content"
android:layout_height="wrap_content" />
</RelativeLayout>

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.

android fragment not showing up beside the drawer - android

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Android kitkat - AppCompat: Doesn't load fragments in my FrameLayout container.(Using a Navigation drawer)

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