fragment/src/main/java/androidx/fragment/app/FragmentActivity.java
@Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mFragments.noteStateNotSaved();
        mFragments.dispatchConfigurationChanged(newConfig);
    }
/**
     * Dispatch configuration change to all fragments.
     */
Dispatch configuration change to all fragments.
Dispatch configuration change to all fragments .
@Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        mFragments.noteStateNotSaved();
        mFragments.dispatchConfigurationChanged(newConfig);
    }
@ Override public void onConfigurationChanged ( Configuration newConfig ) { super . onConfigurationChanged ( newConfig ) ; mFragments . noteStateNotSaved ( ) ; mFragments . dispatchConfigurationChanged ( newConfig ) ; }
Dispatch configuration change to all fragments.
Dispatch configuration change to all fragments .