<Button
        android:id="@+id/button5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/fullscreen" 
        android:onClick="changescreen"/>

private static boolean isfull=true;
    //全屏设置和退出全屏 private void setFullScreen(){ //requestWindowFeature(Window.FEATURE_NO_TITLE);  getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); isfull=true; } private void quitFullScreen(){ final WindowManager.LayoutParams attrs = getWindow().getAttributes(); attrs.flags &= (~WindowManager.LayoutParams.FLAG_FULLSCREEN); getWindow().setAttributes(attrs); getWindow().clearFlags(WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS); //requestWindowFeature(Window.FEATURE_CUSTOM_TITLE); isfull=false; } public void changescreen(View view) { if(isfull==true) { quitFullScreen(); } else { setFullScreen(); } }

@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState); // remove title bar this.requestWindowFeature(Window.FEATURE_NO_TITLE); // full screen this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN); setContentView(R.layout.main); }