How to handle orientation change using fragment?

Question

I now have 2 fragment, one fragment handle portrait mode then another handle landscape mode. But the problem is that when rotate from portrait to landscape then back to portrait. It will not show the same thing that show on the first portrait mode. Is there any code that can solve this problem?

This code is inside the fragment holder:

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.frag_holder);

    FragmentManager fm = getSupportFragmentManager();

    final Fragment fragment = Frag.newInstance(); //Portrait layout
    final Fragment fragment2 = Frag2.newInstance(); //Landscape layout

    int orientation = getResources().getConfiguration().orientation; //check whether is it portrait or landscape


    if(orientation == Configuration.ORIENTATION_PORTRAIT){
        Fragment fragTAG = fm.findFragmentByTag(TAG_P);
        if(fragTAG == null){
            Log.i("test","test");
                fm.beginTransaction()
                        .replace(R.id.fragPlaceHolder, fragment, TAG_P)
                        .commit(); //Portrait
        }
        else{
            fm.beginTransaction().replace(R.id.fragPlaceHolder,fragTAG).commit();
        }

    }
    if(orientation == Configuration.ORIENTATION_LANDSCAPE){
        Fragment fragTAG = fm.findFragmentByTag(TAG_L);
        if(fragTAG == null){
                fm.beginTransaction()
                        .replace(R.id.fragPlaceHolder, fragment2, TAG_L)
                        .commit(); //Landscape
        }
        else{
            fm.beginTransaction().replace(R.id.fragPlaceHolder,fragTAG).commit();
        }
    }

}

}

Answer 1

Step 1: Add Config changes in your activity

    <activity android:name=".ui.createtasks.CreateTaskActivity"
        android:configChanges="orientation|screenSize|keyboardHidden" > </activity>

Step 2: Add your edit text values to onSaveInstanceState

 @Override
public void onSaveInstanceState(@NonNull Bundle outState) {
    super.onSaveInstanceState(outState);
     outState.putCharSequence(KEY_TITLE, et_text.getText().toString());
 }

Step 3: Get your Saved edit text values through onViewStateRestored

    @Override
public void onViewStateRestored(@Nullable Bundle savedInstanceState) {
    super.onViewStateRestored(savedInstanceState);

    String savedTitle = null;
    if (savedInstanceState != null) {
        savedTitle = savedInstanceState.getString(KEY_TITLE);
        et_text.setText(savedTitle);

    }

}