I am trying to replace one of the fragments inside the ViewPager with another one.
The pager is composed by two pages: Fragment1 , Fragment2
inside the fragment2, there is a button. When I click on the button, it will replace the current fragment, Fragment2, with Fragment3. For Fragment2, I want it to be destroyed and not exist anymore.
The implementation Code:
Layout for activity_main:
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
main_activity :
private SectionsPageAdapter mSectionsPageAdapter;
private ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mSectionsPageAdapter = new SectionsPageAdapter(getSupportFragmentManager());
mViewPager = (ViewPager) findViewById(R.id.container);
setupViewPager(mViewPager);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
mSectionsPageAdapter.clearAll();
}
private void setupViewPager(ViewPager viewPager) {
SectionsPageAdapter adapter = new SectionsPageAdapter(getSupportFragmentManager());
adapter.addFragment(new Tab1Fragment(), "Tab 1");
adapter.addFragment(new Tab2Fragment(), "Tab 2");
adapter.notifyDataSetChanged()
viewPager.setAdapter(adapter);
}
The Adapter:
public class SectionsPageAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
public SectionsPageAdapter(FragmentManager fm) {
super(fm);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
}
Fragment2:
public class Tab2Fragment extends Fragment {
private static final String TAG = "Tab2Fragment";
private Button btnTEST;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.tab2_fragment,container,false);
btnTEST = (Button) view.findViewById(R.id.btnTEST2);
btnTEST.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getActivity(), "TESTING BUTTON CLICK 2", Toast.LENGTH_SHORT).show();
}
});
return view;
}
}
Update :
I tried to implement the method clearAll in the adapter put I noticed the mFragmentList.size() return 0 why ?
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
Log.d("tmz",mFragmentList.size()+" From addFragment"); // return 1 & 2
}
#Override
public int getCount() {
return mFragmentList.size();
Log.d("tmz",mFragmentList.size()+"getCount "); // return 2
}
public void clearAll(){
Log.d("tmz",mFragmentList.size()+" From addFragment"); // return 0 why ?
for(int i=0; i<mFragmentList.size(); i++)
fragMan.beginTransaction().remove(mFragmentList.get(i)).commit();
mFragmentList.clear();
mFragmentList=new ArrayList<Fragment>();
notifyDataSetChanged();
}
remove from mFragmentList (and mFragmentTitleList) and add new, then call notifyDataSetChanged? also add to your SectionsPageAdapter for force redrawing ViewPager when notified.
public int getItemPosition(Object object) {
return POSITION_NONE;
}
not most efficient, but sufficient for your purposes. for adapter:
public void removeLastFragment() {
if(mFragmentList.size()==0)
return;
mFragmentList.remove(mFragmentList.size()-1);
mFragmentTitleList.remove(mFragmentTitleList.size()-1);
}
For zero it was because
SectionsPageAdapter adapter = new SectionsPageAdapter(getSupportFragmentManager());
was repeated twice, and I solve my issue with use replace fragment inside the tab
Related
there is a fragment in my activity in which there is a viewpager which has 5 fragments in it and inside the main activity i need to get one of the fragment from viewpager
Activity
public class MainActivity extends AppCompatActivity {
public void setFragment(){
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
#Override
public void run() {
mainFragment= new MainFragment();
FragmentTransaction fragmentTransaction =getSupportFragmentManager().beginTransaction();
fragmentTransaction.replace(R.id.container, mainFragment,"mainFragment");
fragmentTransaction.commitAllowingStateLoss();
}
}, 250);
}
public void findFragment() {
mainFragment= (MainFragment) getSupportFragmentManager().findFragmentByTag("mainFragment");
viewPager = mainFragment.viewPager;
FragmentOne fragment = (FragmentOne) getSupportFragmentManager().findFragmentByTag("android:switcher:" + R.id.viewPager + ":" + viewPager.getCurrentItem());
}
}
MainFragment
public class MainFragment extends Fragment{
private void initViewPagerAndTabs() {
viewPager = view.findViewById(R.id.viewPager);
pagerAdapter = new PagerAdapter(getChildFragmentManager());
pagerAdapter.addFragment(FragmentOne.newInstance(), "one");
pagerAdapter.addFragment(FragmentTwo.newInstance(), "two");
pagerAdapter.addFragment(FragmentThree.newInstance(), "three");
pagerAdapter.addFragment(FragmentFour.newInstance(), "four");
pagerAdapter.addFragment(FragmentFive.newInstance(), "five");
viewPager.setAdapter(pagerAdapter);
TabLayout tabLayout = view.findViewById(R.id.tabLayout);
tabLayout.setupWithViewPager(viewPager);
viewPager.setCurrentItem(1);
viewPager.setOffscreenPageLimit(3);
}
private static class PagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> fragmentList = new ArrayList<>();
private final List<String> fragmentTitleList = new ArrayList<>();
private PagerAdapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
fragmentList.add(fragment);
fragmentTitleList.add(title);
}
#Override
public Fragment getItem(int position) {
return fragmentList.get(position);
}
#Override
public int getCount() {
return fragmentList.size();
}
#Override
public CharSequence getPageTitle(int position) {
return fragmentTitleList.get(position);
}
}
}
if i use "getFragmentManager()" instead of "getChildFragmentManager()" then it returns the fragment but when i use "getChildFragmentManager()" in viewPager it returns null in activity
Try this Running Code for 1 fragment, may it helps you in your code :
Main Activity
public class OpenQuran extends AppCompatActivity implements TabLayout.OnTabSelectedListener {
TabLayout tabLayoutqaue;
Pager mAdapter;
MediaPlayer mp;
//This is our viewPagerss
ViewPager viewPager;
View mWebView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_open_quran);
Toolbar mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
getSupportActionBar().setTitle("Read Quran");
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
//Initializing the tablayout
tabLayoutqaue = (TabLayout) findViewById(R.id.tabLayoutqaue);
//Initializing viewPager
viewPager = (ViewPager) findViewById(R.id.pager);
//Creating our pager adapter
mAdapter = new Pager(getSupportFragmentManager());
// 1 Fragment
mAdapter .addFrag(new Quran(), "Quran");
viewPager.setAdapter(mAdapter);
tabLayoutqaue.setupWithViewPager(viewPager);
tabLayoutqaue.setOnTabSelectedListener(this);
}
#Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
#Override
public void onTabUnselected(TabLayout.Tab tab) {
}
#Override
public void onTabReselected(TabLayout.Tab tab) {
}
Fargment Class :
public class parahlist extends Fragment {
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//Returning the layout file after inflating
//Change R.layout.tab1 in you classes
return inflater.inflate(R.layout.activity_parahlist, container, false);}
public void onViewCreated(View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
}
}
View Pager Class:
public class Pager extends FragmentPagerAdapter {
//integer to count number of tabs
int tabCount;
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
//Constructor to the class
public Pager(FragmentManager fm) {
super(fm);
//Initializing tab count
this.tabCount= tabCount;
}
//Overriding method getItem
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment Fragment, String title) {
mFragmentList.add(Fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
Now This the code Of MainActivity, 2nd Fragment and 3rd one is View Pager class. You dont need to change or edit your View Pager Class. Just Create Java Class and Paste that code as it is.
In Main Activity the Line : mAdapter .addFrag(new Quran(), "Quran"); adding description and Fragment. You can add your own fragment after "new".
After that you have to put Tablayout widget in you Xml as Follows:
<android.support.design.widget.TabLayout
android:id="#+id/tabLayoutqaue"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#color/colorgreen"
android:minHeight="?attr/actionBarSize"
app:tabIndicatorColor="#color/colorback"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
And View Pager like:
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
/>
You may face some issue regarding tablayout :
Just put this line in your gradle build under dependecies:
compile 'com.android.support:design:25.3.1'
According to your version. for example you have 25.0.1
then line will be :
compile 'com.android.support:design:25.0.1
Still i m here to tell you more. if you got problem!
I am trying to replace the fragment views in my tabbed swipe view with another fragment but it does not replace or add the fragment, instead it only adds the menu of the fragment in all the tabbed activity.
I want when in a particular tab activity in my swipeview, I can replace the content(fragmentA) with another fragment(FragmentBoy) which can override that particular menu of that particular tabbed activity. Also could also work when replacing content(fragmentB) with another fragment(FragmentGirl).
Please I stucked, I need a help on this-
public class Main2Activity extends AppCompatActivity {
private ViewPager mViewPager;
private int[] tabIcons = {
R.drawable.ic_grand,
R.drawable.ic_event,
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mViewPager = (ViewPager) findViewById(R.id.container);
setupViewPager(mViewPager);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
setupTabIcons();
}
private void setupTabIcons() {
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.getTabAt(0).setIcon(tabIcons[0]);
tabLayout.getTabAt(1).setIcon(tabIcons[1]);
}
private void setupViewPager(ViewPager mViewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFrag(new FragmentA(), "ONE");
adapter.addFrag(new FragmentB(), "TWO");
mViewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFrag(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return null;
}
}
public static class FragmentA extends Fragment {
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, #Nullable ViewGroup container, #Nullable Bundle savedInstanceState) {
View view=inflater.inflate(R.layout.grand,container,false);
Button tb=(Button)view.findViewById(R.id.btn_c);
tb.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
FragmentManager manager = getFragmentManager();
FragmentTransaction transaction = manager.beginTransaction().add(R.id.swapfrag, new BOYFragment());
transaction.commit();
}
});
return view;
}
}
I am trying to change/slide fragment on click of a button in ViewPager. My code works in one project but, not in current.
xml of activity to load fragment:
<?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:id="#+id/content_swipe"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="firebasetest.imranrana.android.firebasetest.SwipeActivity"
tools:showIn="#layout/activity_swipe"
android:orientation="vertical"
>
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/viewPagerId"
>
</android.support.v4.view.ViewPager>
</LinearLayout>
activity:
public class SwipeActivity extends AppCompatActivity{
ViewPager viewPager;
Toolbar toolbar;
TabLayout tabLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_swipe);
toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().hide();
viewPager=(ViewPager)findViewById(R.id.viewPagerId);
setupViewPager(viewPager);
// tabLayout=(TabLayout)findViewById(R.id.tabLayoutId);
// tabLayout.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new WebViewFragment()/*, "Main"*/);
adapter.addFragment(new MenuFragment()/*, "TWO"*/);
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentStatePagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
// private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment/*, String title*/) {
mFragmentList.add(fragment);
// mFragmentTitleList.add(title);
}
/*#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}*/
}
}
fragment of viewpager contains changing button:
public class MenuFragment extends Fragment {
Button funPageButton;
Button profilePageButton;
Fragment fragment;
FragmentTransaction fragmentTransaction;
public MenuFragment() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View view=inflater.inflate(R.layout.fragment_menu, container, false);
funPageButton=(Button)view.findViewById(R.id.funPageButtonId);
profilePageButton=(Button)view.findViewById(R.id.profileButtonId);
funPageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getActivity(),"test",Toast.LENGTH_LONG).show();
fragment=new TestFragment();
fragmentTransaction=getActivity().getSupportFragmentManager().beginTransaction(); ;
fragmentTransaction.replace(R.id.content_swipe,fragment).commit();
}
});
profilePageButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Toast.makeText(getActivity(),"test 1",Toast.LENGTH_LONG).show();
fragment=new TestFragment1();
fragmentTransaction=getFragmentManager().beginTransaction();
fragmentTransaction.add(R.id.content_swipe,fragment).commit();
}
});
return view;
}
}
What am i doing wrong?
I have used fragments for drawer item, each fragments consists of non-fixed tabs.I'm using PagerSlidingTabStrip library for showing tabs.When fragment is initialized it shows 1st ViewPager, which is correct but when I click on 2nd tab it shows up 3rd ViewPager.Likewise the last ViewPager is never shown.
Tab xml
<?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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<com.astuetz.PagerSlidingTabStrip
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="48dp"
android:textColor="#000000"
android:textSize="#dimen/sp_fifteen"
app:pstsDividerColor="#color/red"
app:pstsIndicatorColor="#color/black"
app:pstsTextAllCaps="true"
app:pstsUnderlineColor="#color/gray" />
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Adapter class:
private PagerSlidingTabStrip tabStrip;
private Adapter adapter;
public static TowerOneTabs newInstance() {
TowerOneTabs fragment = new TowerOneTabs();
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View mView = getActivity().getLayoutInflater().inflate(R.layout.tower_tabs_layout, null);
super.onCreate(savedInstanceState);
ViewPager viewPager = (ViewPager) mView.findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabStrip = (PagerSlidingTabStrip) mView.findViewById(R.id.tabs);
tabStrip.setViewPager(viewPager);
tabStrip.setOnPageChangeListener(this);
return mView;
}
#Override
public void onResume() {
super.onResume();
tabStrip.setOnPageChangeListener(this);
}
#Override
public void onDestroyView() {
super.onDestroyView();
}
private void setupViewPager(ViewPager viewPager) {
//Here we have to pass ChildFragmentManager instead of FragmentManager.
adapter = new Adapter(getChildFragmentManager());
adapter.addFragment(TowerOne.newInstance(), getResources().getString(R.string.tower1));
adapter.addFragment(T11.newInstance(), Constants.KEY_T1_1);
adapter.addFragment(T12.newInstance(), Constants.KEY_T1_2);
adapter.addFragment(T13.newInstance(), Constants.KEY_T1_3);
adapter.addFragment(T14.newInstance(), Constants.KEY_T1_4);
adapter.addFragment(T15.newInstance(), Constants.KEY_T1_5);
viewPager.setAdapter(adapter);
}
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
switch (position) {
case 0:
// BaseActivity.getTitleView().setText(Constants.KEY_TOWER_ONE);
break;
case 1:
mCallback.showDialog();
break;
case 2:
mCallback.showDialog();
break;
case 3:
mCallback.showDialog();
break;
case 4:
mCallback.showDialog();
break;
case 5:
mCallback.showDialog();
break;
default:
break;
}
}
#Override
public void onPageScrollStateChanged(int state) {
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public Adapter(android.support.v4.app.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);
}
}
I checked this code and its working. If you want to add extra parameter (like Constant), you can edit the SampleFragmentPagerAdapter's addFragment method.
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
//viewPager.setAdapter(new SampleFragmentPagerAdapter(getSupportFragmentManager()));
setupViewPager(viewPager);
// Give the PagerSlidingTabStrip the ViewPager
PagerSlidingTabStrip tabsStrip = (PagerSlidingTabStrip) findViewById(R.id.tabs);
// Attach the view pager to the tab strip
tabsStrip.setViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
SampleFragmentPagerAdapter adapter = new SampleFragmentPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new OneFragment(), "ONE");
adapter.addFragment(new TwoFragment(), "TWO");
viewPager.setAdapter(adapter);
}
public class SampleFragmentPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public SampleFragmentPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public int getCount() {
return mFragmentList.size();
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
}
I have one activity named rootActivity , in which i have a rootContainer in which i replace the fragments.
Now, the first fragment that i replace is DashboardFragment.
I now click on the cross to open a new fragment like this...
Now when i press the back button the content of dashboard fragment is lost.
Can someone help me
Here's a video to show what's really happening.
https://youtu.be/NobqYUCEZKY
Code for the DashboardFragment(contains the fragments inside tabs)
public class DashboardFragment extends Fragment {
private Toolbar toolbar;
private TabLayout tabLayout;
private ViewPager viewPager;
private View rootView;
/**
*
* #param config : For setting up stuff by the given config
* #return
*/
public static DashboardFragment newInstance(Bundle config) {
DashboardFragment fragment = new DashboardFragment();
fragment.setArguments(config);
return fragment;
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.activity_dashboard, container, false);
toolbar = (Toolbar) rootView.findViewById(R.id.toolbar);
((RootActivity)getActivity()).setSupportActionBar(toolbar);
viewPager = (ViewPager) rootView.findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) rootView.findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
setupTabIcons();
return rootView;
}
private void setupTabIcons() {
tabLayout.getTabAt(0).setIcon(android.R.drawable.btn_star_big_off);
tabLayout.getTabAt(1).setIcon(android.R.drawable.btn_star_big_on);
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getActivity().getSupportFragmentManager());
adapter.addFragment(new TrackeesFragment(), "Trackee");
adapter.addFragment(new TrackersFragment(), "Trackers");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentStatePagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public Object instantiateItem(ViewGroup container, int position) {
return super.instantiateItem(container, position);
}
#Override
public CharSequence getPageTitle(int position) {
return null;
}
}
}
try by changing the following line in
setupViewPager(ViewPager viewPager) {}
Change
ViewPagerAdapter adapter = new ViewPagerAdapter(getActivity().getSupportFragmentManager());
To
ViewPagerAdapter adapter = new ViewPagerAdapter(getChildFragmentManager());