Develop Reference

Menu in the toolbar changes or disappears

The structure of my app , an Activity with fragments that use navigationcomponent.
In the toolbar of my HomeFragment there is a toolbar with a search icon as a menu. This clicked icon leads to the search activity.
HomeFragment
Browsing in my app and changing fragment up to the ProfileFragment, I have the opportunity to view my lists and clicking on one of these opens another fragment to show the contents of that list
ProfileFragment, ShowListContent.
Now here's the magic
If I click on the toolbar icon to change the description of my list everything is perfect and we are delighted but ...
New HomeFragment
If I go back to the HomeFragment, the icon in the toolbar is no longer the same and I cannot go to the SearchActivity.
What can I do to avoid this problem?
Code time
public class HomeFragment extends Fragment{
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View view = inflater.inflate(R.layout.fragment_home, container,
false);
initToolbar(view);
//other code
return view;
}
private void initToolbar(View view) {
Toolbar toolbar = view.findViewById(R.id.app_bar);
((AppCompatActivity) getActivity()).setSupportActionBar(toolbar);
toolbar.inflateMenu(R.menu.menu_main_toolbar);
}
#Override
public void onCreateOptionsMenu(#NotNull Menu menu, #NotNull MenuInflater
inflater) {
super.onCreateOptionsMenu(menu, inflater);
menu.clear();
inflater.inflate(R.menu.menu_main_toolbar, menu);
}
#Override
public boolean onOptionsItemSelected(#NonNull MenuItem item) {
int id = item.getItemId();
if (id == R.id.menu_search) {
Intent intent = new Intent(getActivity(), SearchActivity.class);
startActivity(intent);
}
return true;
}
}
fragment_home.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
android:background="#141a32"
tools:context=".fragments.HomeFragment">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="4dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.appcompat.widget.Toolbar
android:id="#+id/app_bar"
style="#style/toolbar"
app:menu="#menu/menu_main_toolbar"
app:titleTextAppearance="#style/Toolbar.TitleText"
app:titleTextColor="#color/white" />
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="0dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/appBarLayout">
//other code
</androidx.core.widget.NestedScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
ShowContentListFragment
public class ShowContentListFragment extends Fragment{
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
final View view = inflater.inflate(R.layout.fragments_layout_lists, container, false);
setHasOptionsMenu(true);
getDataFromSafeArgs();
initWidgets(view);
initToolbar();
return view;
}
private void initToolbar() {
toolbar.setVisibility(View.VISIBLE);
toolbar.setNavigationIcon(R.drawable.ic_friend_list_back_button);
toolbar.inflateMenu(R.menu.menu_profile_edit_list);
toolbar.setNavigationOnClickListener(v -> {
Navigation.findNavController(getView())
.navigate(R.id.action_showContentListFragment_to_profileFragmentOriginal);
movies_into_list.clear();
getAndPostMovieIntoLIstModel.clearPersonalList();
});
toolbar.setOnMenuItemClickListener(item -> {
if (item.getItemId() == R.id.menu_edit) {
dialogModifyDescription();
return true;
} else {
return false;
}
});
}
#Override
public void onCreateOptionsMenu(#NonNull Menu menu, #NonNull MenuInflater inflater) {
menu.clear();
inflater.inflate(R.menu.menu_profile_edit_list, menu);
super.onCreateOptionsMenu(menu, inflater);
}
}
fragment_showListContent.xml
<?xml version="1.0" encoding="utf-8"?>
<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"
android:background="#color/big_stone"
tools:context=".fragments.MyListsFragment">
<include
layout="#layout/layout_toolbar"
android:visibility="gone"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
//other code
</androidx.constraintlayout.widget.ConstraintLayout>

You should have 1 toolbar and maybe 1 menu and instead disable/enable icons using menu.findItem(R.id.menu_edit).setVisible(true/false);
Maybe you could try calling requireActivity().invalidateOptionsMenu() as well.

When I am adding fragment to my view pager (in nested scroll view), I can not exit from application with device back button

This is my activity_main code:
<?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"
android:layoutDirection="rtl"
tools:context=".MainActivity"
tools:openDrawer="start">
<android.support.design.widget.CoordinatorLayout
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:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:layoutDirection="rtl"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:title="#string/app_name">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layoutDirection="rtl" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<com.duolingo.open.rtlviewpager.RtlViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layoutDirection="rtl"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:layoutDirection="rtl"
app:headerLayout="#layout/drawer_header"
app:menu="#menu/menu_drawer" />
</android.support.v4.widget.DrawerLayout>
I want to add some fragments to ViewPager in NestedScrollView.
Without adding fragments to ViewPager everything is ok and I can exit from app by device back button, but when I am adding fragment(s) to ViewPager I can not exit from app by pressing device back button.(Back button is working and for example can close soft keyboard)
this is my fragment code:
(empty fragment!)
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable
ViewGroup container, #Nullable Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_jadvalyab,container,false);
}
and this is my adapter:
public class MyFragmentPagerAdapter extends FragmentPagerAdapter {
private ArrayList<Fragment> fragmentsList = new ArrayList<>();
private ArrayList<String> fragsTitleList = new ArrayList<>();
public MyFragmentPagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment,String title){
fragmentsList.add(fragment);
fragsTitleList.add(title);
}
#Nullable
#Override
public CharSequence getPageTitle(int position) {
return fragsTitleList.get(position);
}
#Override
public Fragment getItem(int position) {
return fragmentsList.get(position);
}
#Override
public int getCount() {
return fragmentsList.size();
}
}
Does anyone have an idea to solving this problem?
Thanks.
Edit:
Problem solved by removing NestedScrollingView from coordinator layout in activity_main and putting that in fragment layout (inside viewpager).
But still I don't know why device back button did not worked in former state.

I think the problem is occurring because you have used a third party library for ViewPager.
Just copy and paste the following code in the place of your "activity_main.xml" file.
<?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">
<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"
tools:context=".Main2Activity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main2" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
<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/drawer_header"
app:menu="#menu/menu_drawer" />
</android.support.v4.widget.DrawerLayout>
I have initialized fragment to ViewPager like this
ViewPager viewPager2 = findViewById(R.id.viewpager);
MyFragmentPagerAdapter pagerAdapter2 = new MyFragmentPagerAdapter(getSupportFragmentManager());
pagerAdapter2.addFragment(TestFragment.createInstance(),"Home");
viewPager2.setAdapter(pagerAdapter2);
TabLayout tabLayout2 = findViewById(R.id.tabs);
tabLayout2.setupWithViewPager(viewPager2);
Here is the Testfragment.java class
public class TestFragment extends Fragment {
public static TestFragment createInstance() {
TestFragment profileFragment = new TestFragment();
return profileFragment;
}
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_jadvalyab, container, false);
return rootView;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
#Override
public void onAttach(Context context) {
super.onAttach(context);
}
}
And the full code of "Main2Activity.java" class is here
public class Main2Activity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
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);
drawer.addDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
initViewPager();
}
private void initViewPager() {
ViewPager viewPager2 = findViewById(R.id.viewpager);
MyFragmentPagerAdapter pagerAdapter2 = new MyFragmentPagerAdapter(getSupportFragmentManager());
pagerAdapter2.addFragment(TestFragment.createInstance(),"Home");
viewPager2.setAdapter(pagerAdapter2);
TabLayout tabLayout2 = findViewById(R.id.tabs);
tabLayout2.setupWithViewPager(viewPager2);
}
#Override
public void onBackPressed() {
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
if (drawer.isDrawerOpen(GravityCompat.START)) {
drawer.closeDrawer(GravityCompat.START);
} else {
super.onBackPressed();
}
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main2, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#SuppressWarnings("StatementWithEmptyBody")
#Override
public boolean onNavigationItemSelected(MenuItem item) {
// Handle navigation view item clicks here.
int id = item.getItemId();
if (id == R.id.nav_camera) {
// Handle the camera action
} else if (id == R.id.nav_gallery) {
} else if (id == R.id.nav_slideshow) {
} else if (id == R.id.nav_manage) {
} else if (id == R.id.nav_share) {
} else if (id == R.id.nav_send) {
}
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
drawer.closeDrawer(GravityCompat.START);
return true;
}
}
Edit:
Code of "content_main2.xml"
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView 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:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</android.support.v4.widget.NestedScrollView>
Code for "fragment_jadvalyab.xml" is in te following
<?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">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="Best Wishes"
android:gravity="center"/>
</LinearLayout>

Try this
#Override
public void onBackPressed() {
//Your Action
}

Override onBackPress(){} event in your MainActivity which holds your above xml layout.
#Override
public void onBackPressed() {
finish();
}

override OnBackPressed() method , or you can write your adapter as this.
public class Adapter extends FragmentStatePagerAdapter {
public Adapter (FragmentManager fm) {
super(fm);
}
// you can add fragments according to your requirement
#Override
public Fragment getItem(int position) {
Fragment fragment= null;
switch (position){
case 0:
fragment= new fragmentDay();
break;
case 1:
fragment= new fragmentWeek();
break;
case 2:
fragment= new fragmentMonth();
break;
}
return fragment;
}
#Override
public int getCount() {
return 3;
}
}
and inside activity pass fragment manager to adapter constructor.
fragmentManager= getSupportFragmentManager();
adapter= new Adapter(fragmentManager);
viewPager.setAdapter(adapter);
I have used tablayout with viewpager
tabLayout.setupWithViewPager(viewPager);
tabLayout.setTabsFromPagerAdapter(adapter);
tabLayout.getTabAt(0).setText("Day");
tabLayout.getTabAt(1).setText("Week");
tabLayout.getTabAt(2).setText("Month");
tabLayout.getTabAt(1).select();
tabLayout.setSelectedTabIndicatorColor(Color.WHITE);

Recyclerview in Coordinatorlayout cutting off last item

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

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

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

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

How to create a Fragment over the Viewpager in android?

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

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

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

Android - Unable to change text in TextView

I just started to learning Android and I have a problem. With new Android Studio i have two XML files for each activity, so not to get NullPointerException I had to change my findViewById a little bit. But now I am unable to change text in TextView.
Code:
public class MainActivity extends AppCompatActivity {
LinearLayout layoutMain;
TextView tvText;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
layoutMain = (LinearLayout) View.inflate(this, R.layout.content_main, null);
tvText = (TextView) layoutMain.findViewById(R.id.tvText);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.action_settings1:
tvText.setText("one");
Log.d("USER","one");
break;
case R.id.action_settings2:
tvText.setText("two");
Log.d("USER", "two");
break;
}
return super.onOptionsItemSelected(item);
}
}
XML files:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.myapp6.MainActivity"
tools:showIn="#layout/activity_main">
<TextView
android:id="#+id/tvText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
</LinearLayout>
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main" />

Change
tvText = (TextView) layoutMain.findViewById(R.id.tvText);
to
tvText = (TextView) findViewById(R.id.tvText);
You were getting an incorrect reference to the TextView.

public class MainActivity extends AppCompatActivity {
View includedView;
TextView tvText;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
includedView = (View) findViewById(R.id.includedView);
tvText = (TextView) includedView.findViewById(R.id.tvText);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
switch (id) {
case R.id.action_settings1:
tvText.setText("one");
Log.d("USER","one");
break;
case R.id.action_settings2:
tvText.setText("two");
Log.d("USER", "two");
break;
}
return super.onOptionsItemSelected(item);
}
}
Also little bit change in your xml files
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="com.example.myapp6.MainActivity"
tools:showIn="#layout/activity_main">
<TextView
android:id="#+id/tvText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World!" />
</LinearLayout>
and second xml
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_main"
android:id="#+id/includedView"/>

Copy and Paste your content_main layout inside activity_main xml and delete the content_main xml file.
Then change the code in onCreate() as:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
layoutMain = (LinearLayout) findViewById(R.id.content_main);
//content_main should be the id of the layout you copied!
tvText = (TextView) findViewById(R.id.tvText);
}