Set System UI Visibility

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerVertical="true"
        android:text="Toggle Mode"
        android:onClick="onToggleClick" />
</RelativeLayout>

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
//www.  ja  v  a  2s  .c o  m
public class MainActivity extends Activity {
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
    }    
    public void onToggleClick(View v) {
        v.setSystemUiVisibility(
                /* This flag tells Android not to shift 
                 * our layout when resizing the window to
                 * hide/show the system elements
                 */
                View.SYSTEM_UI_FLAG_LAYOUT_STABLE
                /* This flag hides the system status bar.
                 */
                | View.SYSTEM_UI_FLAG_FULLSCREEN
                /* This flag hides the on-screen controls
                 */
                | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION
                /* This flag tells the controls to stay hidden until
                 * the user brings them back explicitly with a gesture,
                 * and hide them again after a period.
                 */
                | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY);
    }
}