//狀態欄 @ 頂部getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);//A//導航欄 @ 底部getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);//B//這個加在哪個布局，該布局就會相應的向上（配置A）或者向下（配置B）或者向上下（同時配置AB）擴展android:fitsSystemWindows="true"

 /**  * 隱藏虛擬按鍵，并且全屏  */ protected void hideBottomUIMenu() {  //隱藏虛擬按鍵，并且全屏  if (Build.VERSION.SDK_INT > 11 && Build.VERSION.SDK_INT < 19) { // lower api   View v = this.getWindow().getDecorView();   v.setSystemUiVisibility(View.GONE);  } else if (Build.VERSION.SDK_INT >= 19) {   //for new api versions.   View decorView = getWindow().getDecorView();   int uiOptions = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION       | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY | View.SYSTEM_UI_FLAG_FULLSCREEN;   decorView.setSystemUiVisibility(uiOptions);  } }