Use android.support.v4.app.Fragment and android.app.Fragment in same activity

Question

My MainActivity uses two types of fragments:

com.google.android.gms.maps.SupportMapFragment

and

com.ankitshubham97.myapp.NotifFragment.

For com.google.android.gms.maps.SupportMapFragment, android.support.v4.app.Fragment is needed but for com.ankitshubham97.myapp.NotifFragment, android.app.Fragment is needed. I cannot import both of them. Is there some neat solution for solving this? I already looked into How to mix android.support.v4.app.Fragment and android.app.Fragment and Android using both getFragmentManager and getSupportFragmentManager causes overlapping but they are a bit old and thought if somebody has a neat solution, apart from what is suggested in the previous links.

Here is my activity.xml's fragment declaration part:

<FrameLayout
    android:id="@+id/content"
    android:layout_width="match_parent"
    android:layout_height="0dp"
    android:layout_weight="1">
    <fragment
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:map="http://schemas.android.com/apk/res-auto"
        xmlns:tools="http://schemas.android.com/tools"
        android:id="@+id/map"
        android:name="com.google.android.gms.maps.SupportMapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </fragment>

    <fragment
        android:id="@+id/notif"
        android:name="com.ankitshubham97.myapp.NotifFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </fragment>
</FrameLayout>

My MainActivity.java's onCreate function(with errors):

 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mapFragment = (SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map);
        notifFragment =  getFragmentManager().findFragmentById(R.id.notif);
        getFragmentManager().beginTransaction().hide(notifFragment);
        mapFragment.getMapAsync(this);
        navigation = (AHBottomNavigation) findViewById(R.id.navigation);
        AHBottomNavigationItem item1 = new AHBottomNavigationItem(R.string.title_home, R.drawable.ic_home_black_24dp, R.color.colorBottomNavigationPrimary);
        AHBottomNavigationItem item2 = new AHBottomNavigationItem(R.string.title_dashboard, R.drawable.ic_dashboard_black_24dp, R.color.colorBottomNavigationPrimary);
        AHBottomNavigationItem item3 = new AHBottomNavigationItem(R.string.title_notifications, R.drawable.ic_notifications_black_24dp, R.color.colorBottomNavigationPrimary);
        navigation.addItem(item1);
        navigation.addItem(item2);
        navigation.addItem(item3);
        navigation.setOnTabSelectedListener(new AHBottomNavigation.OnTabSelectedListener() {
            @Override
            public boolean onTabSelected(int position, boolean wasSelected) {
                FragmentManager sfm = getSupportFragmentManager();
                FragmentTransaction sft= sfm.beginTransaction();
                switch (position) {
                    case 0:
                        Log.d(TAG,(mapFragment==null)+"");
                        sft.show(mapFragment);
                        ft.hide(notifFragment);
                        sft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
                        sft.commit();
                        Toast.makeText(getApplicationContext(),R.string.title_home,Toast.LENGTH_SHORT).show();
                        return true;

                    case 1:

                        sft.hide(mapFragment);
                        ft.show(notifFragment);
                        sft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
                        sft.commit();addToBackStack(null).commit();
                        Toast.makeText(getApplicationContext(),R.string.title_dashboard,Toast.LENGTH_SHORT).show();
                        return true;
                    case 2:
                        Toast.makeText(getApplicationContext(),R.string.title_notifications,Toast.LENGTH_SHORT).show();
                        navigation.setNotification("",2);
                        spEditor.putInt(NOTIFCOUNT,0);
                        spEditor.apply();
                        return true;
                }
                return true;
            }
        });
}

score 0 · Answer 1 · answered Sep 04 '17 at 09:16

0

Where-ever you use "Fragment", use the specific class including the package. So replace "Fragment" with "android.support.v4.app.Fragment" or "android.app.Fragment" depending on the case.

Does that solve your issue?

answered Sep 04 '17 at 09:16

Frank

12,010
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Thank you for your reply. Actually the issue was something else(see my answer) and I had already tried your approach beforehand. :) – Ankit Shubham Sep 04 '17 at 20:59

score 0 · Answer 2 · answered Sep 04 '17 at 20:59

I found out the problem. NotifFragment class extended android.support.v4.app.Fragment and that's why I had to use getSupportFragmentManager().findFragmentById(R.id.notif); instead of getFragmentManager().findFragmentById(R.id.notif);. Also in imports, I had to use android.support.v4.app.* instead of android.app.*

Use android.support.v4.app.Fragment and android.app.Fragment in same activity

2 Answers2