Navigation nach verstecken in android anzeigen

Question

Ich verberge die Navigationsleiste. Mit dem folgenden Code:

  View v = activity.getWindow().getDecorView(); 
     v.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_STABLE 
           | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION 
           | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN 
           | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION 
           | View.SYSTEM_UI_FLAG_FULLSCREEN 
           | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY 
       ); 

Jetzt möchte ich Navigation Bar Wie zurückkehren kann ich tun?

Answer 1

nur Code aus offiziellen Dokumenten verwenden Immersive

// This snippet hides the system bars. 
private void hideSystemUI() { 
    // Set the IMMERSIVE flag. 
    // Set the content to appear under the system bars so that the content 
    // doesn't resize when the system bars hide and show. 
    mDecorView.setSystemUiVisibility(
     View.SYSTEM_UI_FLAG_LAYOUT_STABLE 
     | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION 
     | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN 
     | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar 
     | View.SYSTEM_UI_FLAG_FULLSCREEN // hide status bar 
     | View.SYSTEM_UI_FLAG_IMMERSIVE); 
} 

// This snippet shows the system bars. It does this by removing all the flags 
// except for the ones that make the content appear under the system bars. 
private void showSystemUI() { 
    mDecorView.setSystemUiVisibility(
     View.SYSTEM_UI_FLAG_LAYOUT_STABLE 
     | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION 
     | View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN); 
}