Question

I need to change layout of my Android (4.1 API 16) application when orientation is changed.

 @Override
    public void onConfigurationChanged(Configuration newConfig) {
      super.onConfigurationChanged(newConfig);
      setContentView(R.layout.main_2);
      System.out.println("Orientation changed!");
    }

Also I have added the next line to manifest file

android:configChanges="orientation"

I use Ctrl+F11 to change orientation. My screen rotates but layout stays the same and nothing is printed in LogCat. Feels like onConfigChanged event doesn’t occur.

Where is my mistake?

Thank you.

Answer 1

Try using android:configChanges="orientation|keyboardHidden|screenSize"

Caution: Beginning with Android 3.2 (API level 13), the “screen size”
also changes when the device switches between portrait and landscape
orientation. Thus, if you want to prevent runtime restarts due to
orientation change when developing for API level 13 or higher (as
declared by the minSdkVersion and targetSdkVersion attributes), you
must include the “screenSize” value in addition to the “orientation”
value. That is, you must decalare
android:configChanges=”orientation|screenSize”. However, if your
application targets API level 12 or lower, then your activity always
handles this configuration change itself (this configuration change
does not restart your activity, even when running on an Android 3.2 or
higher device).

Source : Documentation

Hence, also add "|screenSize" to configChanges if your application targets API 13 and above.