//創(chuàng)建一個包含自定義view的PopupWindow
private PopupWindow makePopupWindow(Context cx) {
  PopupWindow window;
  window = new PopupWindow(cx);
  TextView contentView = new TextView(cx);
  contentView.setGravity(Gravity.CENTER);
  final Resources res = cx.getResources();
  // contentView.setBackgroundColor(R.color.page_window_bgcolor);
  // window.setBackgroundDrawable(new
  // ColorDrawable(res.getColor(R.color.page_window_bgcolor)));
  contentView.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT,
      LayoutParams.WRAP_CONTENT));
  //設置PopupWindow顯示和隱藏時的動畫
  window.setAnimationStyle(R.style.AnimationFade);
  //設置PopupWindow的大小（寬度和高度）
  window.setWidth(res.getDimensionPixelSize(R.dimen.page_window_width));
  window.setHeight(res.getDimensionPixelSize(R.dimen.page_window_height));
  //設置PopupWindow的內容view
  window.setContentView(contentView);
    //設置PopupWindow外部區(qū)域是否可觸摸
    window.setOutsideTouchable(true);
  return window;
}

<!-- PopupWindow窗口淡入淡出動畫 -->
<style name="AnimationFade">
  <item name="android:windowEnterAnimation">@anim/fade_in</item>
  <item name="android:windowExitAnimation">@anim/fade_out</item>
</style>

window.setAnimationStyle(R.style.AnimationFade);

window.setFocusable(true); //設置PopupWindow可獲得焦點
window.setTouchable(true); //設置PopupWindow可觸摸
window.setOutsideTouchable(true); //設置非PopupWindow區(qū)域可觸摸

window.showAtLocation();
window.showAsDropDown();