protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  //在setContentView之前添加,未添加的話home鍵監聽無效，設置窗體屬性  this.getWindow().setFlags(0x80000000, 0x80000000);  setContentView(R.layout.activity_main);  //創建廣播  //InnerRecevier innerReceiver = new InnerRecevier();  //動態注冊廣播  //IntentFilter intentFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);  //啟動廣播  //registerReceiver(innerReceiver, intentFilter);  //外部網頁  // init();  //pop  Button pop = (Button) findViewById(R.id.popButton);  pop.setOnClickListener(popClick); } View.OnClickListener popClick = new View.OnClickListener() {  @Override  public void onClick(View v) {   getPopupWindow();   popupWindow.showAtLocation(v, Gravity.LEFT,0,0);  } }; /*創建PopupWindow*/ protected void initPopupWindow(){  //獲取自定義布局文件activity_pop_left.xml 布局文件  final View popipWindow_view = getLayoutInflater().inflate(R.layout.activity_pop_left,null,false);  //創建Popupwindow 實例，200，LayoutParams.MATCH_PARENT 分別是寬高  popupWindow = new PopupWindow(popipWindow_view,300, ViewGroup.LayoutParams.MATCH_PARENT,true);//設置動畫效果  popupWindow.setAnimationStyle(R.style.AnimationFade);  //點擊其他地方消失  popipWindow_view.setOnTouchListener(new View.OnTouchListener() {   @Override   public boolean onTouch(View v, MotionEvent event) {    if (popipWindow_view != null && popipWindow_view.isShown()) {     popupWindow.dismiss();     popupWindow = null;    }    return false;   }  });  popupWindow.setBackgroundDrawable(new ColorDrawable(0));  Button button1 = (Button) popipWindow_view.findViewById(R.id.button1);  button1.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    Toast.makeText(getApplicationContext(),"全屏顯示",Toast.LENGTH_SHORT).show();   }  }); }/*獲取PopipWinsow實例*/private void getPopupWindow(){ if (null!=popupWindow){  popupWindow.dismiss();  return; }else {  initPopupWindow(); }}

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/container" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.example.x.MainActivity" tools:ignore="MergeRootFrame" > <WebView  android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/webView" /> <Button  android:id="@+id/popButton"  android:text="點擊彈出左菜單" android:layout_width="fill_parent"  android:layout_height="wrap_content" /></FrameLayout>