Android Navigation Drawer - 调用基础内容视图

Question

I wanted to know how to call the base content_main.xml (layout) from the Navigation Drawer after calling other FragmentActivity.class , wherein the content_main.xml is the first view you'll see on starting the android application.

I can't do this because I think the Main Activity ( MainActivity_Fragment.class ) along with the NavigationDrawer extends AppCompatActivity ... If you need a code I'll just display the code snippets... since the code too long.

If there's a way to call the default contentview, let me know... I searched google many times and unfortunately no answers... Please Help, thank you...

MainActivity_Fragment.class

public class MainActivity_Fragment extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener,
    SlideFragment.OnFragmentInteractionListener,
    View.OnClickListener{
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
...
}
@Override
public boolean onNavigationItemSelected(MenuItem item) {
...
    // Handle navigation view item clicks here.
    int id = item.getItemId();
    if (id == R.id.nav_camera) {
        //startActivity(new Intent(this, MainActivity_Fragment.class).addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP));
        FragmentTransaction transaction = getFragmentManager().beginTransaction();
        MainActivity_Fragment newFragment = new MainActivity_Fragment();
        transaction.replace(R.id.activity_translator, newFragment); // THIS IS THE ERROR WHEREIN MAINACTIVITY.CLASS SHOULD IMPLEMENT FRAGMENT
        transaction.addToBackStack(null);
        transaction.commit();
...
}

And this is my content_main.xml layout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/relativeLayout_for_Fragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/card_activity_background"
android:orientation="vertical"
tools:showIn="@layout/app_bar_main">

...// MY DEFAULT DISPLAY CONTENT

</LinearLayout>

Platform: Android Studio 2.2 Preview 5

Android SDK Target: 24

Min 15

NOTE : I didn't used FragmentActivity as extension of my Class, I simply used AppCompatActivity

Answer 1

try to do this may be helpful to you just change the bellow line

FragmentTransaction transaction = getFragmentManager().beginTransaction();

To

FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();

Answer 2

In onCreate() of MainActivity_Fragment, the first view should be default fragment like this:

            mFragmentManager = getSupportFragmentManager();
            mFragmentTransaction = mFragmentManager.beginTransaction();
            //Default fragment when begin
            Bundle bundle = new Bundle();
            HomeFragment homeFragment = new HomeFragment();
            homeFragment.setArguments(bundle);
            mFragmentTransaction.replace(R.id.containerView, homeFragment);
            mFragmentTransaction.commit();

Answer 3

I am not sure, I think it's in my own Activity, I should have re-code my MainActivity_Fragment.class and extend it to FragmentActivity . But I'm still looking forward for the answer to not migrate to FragmentActivity .