PopupWindow

PopupWindow显示位置、设置半透明及兼容华为设置半透明背景

• popupWindow设置半透明背景

  /**
   * popupWindow设置半透明背景
   * @param bgAlpha 透明值 0.0 - 1.0
   */
  public void backgroundAlpha(float bgAlpha) {
      WindowManager.LayoutParams lp = getActivity().getWindow().getAttributes();
      lp.alpha = bgAlpha; 
      if (bgAlpha == 1) {
          //不移除该Flag的话,在有视频的页面上的视频会出现黑屏的bug
          getActivity().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
      } else {
          //此行代码主要是解决在华为手机上半透明效果无效的bug
          getActivity().getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);
      }
      getActivity().getWindow().setAttributes(lp);
  }

  • popupWindow从底部弹出
    

    findViewById(R.id.bttton).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                initBottomPopupWindow();
            }
        });
    
    /**
     * 从底部直接弹出
     */
    protected void initBottomPopupWindow() {
        View popupWindowView = inflater.inflate(R.layout.popupwindow, null);
        //内容，高度，宽度
        WindowManager wm = (WindowManager) mActivity
                .getSystemService(Context.WINDOW_SERVICE);
    
        int width = (int) (wm.getDefaultDisplay().getHeight() * 0.5);
        popupWindow = new PopupWindow(popupWindowView, RelativeLayout.LayoutParams.MATCH_PARENT,
                width, true);
    
        //动画效果
        popupWindow.setAnimationStyle(R.style.AnimationBottomFade);
        //菜单背景色
        ColorDrawable dw = new ColorDrawable(0xffffffff);
        popupWindow.setBackgroundDrawable(dw);
    
        //显示位置
        popupWindow.showAtLocation(inflater.inflate(R.layout.activity_main, null), Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);
        //设置背景半透明
        backgroundAlpha(0.5f);
        //关闭事件
        popupWindow.setOnDismissListener(new popupDismissListener());
    
        popupWindowView.setOnTouchListener(new View.OnTouchListener() {
    
            @Override
            public boolean onTouch(View v, MotionEvent event) {
    
                return false;
            }
        });
    
    
    }

• 出来关闭的动画style

  <style name="AnimationBottomFade">
      <item name="android:windowEnterAnimation">@anim/in_bottomtotop</item>
      <item name="android:windowExitAnimation">@anim/out_toptobottom</item>
  </style>

• 显示动画in_bottomtotop.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:fromYDelta="100%"
        android:toYDelta="0"
        android:duration="500"/>

</set>

• 关闭动画out_toptobottom.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
    <translate
        android:fromYDelta="0"
        android:toYDelta="100%"

</set>

• 显示在ListView item上下

 ......
 // listView长按
 listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            @Override
            public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
                showPopupWindow(view);

                return true;
            }
        });
/**
 * 显示popupwindow
 * @param parent listView item view
 */
private void showPopupWindow(View parent) {
        LayoutInflater layoutInflater = (LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = layoutInflater.inflate(R.layout.put_storage_item_particulars, null);

        WindowManager wm = (WindowManager) getActivity()
                .getSystemService(Context.WINDOW_SERVICE);

        int width = (int) (wm.getDefaultDisplay().getWidth() * 0.75);
       PopupWindow popupWindow = new PopupWindow(view, width, WindowManager.LayoutParams.WRAP_CONTENT);
        popupWindow.setFocusable(true);
        popupWindow.setOutsideTouchable(true);
        // 这个是为了点击“返回Back”也能使其消失，并且并不会影响你的背景
        ColorDrawable dw = new ColorDrawable(0xFFFFFFFF);
        popupWindow.setBackgroundDrawable(dw);

        WindowManager windowManager = (WindowManager) getActivity().getSystemService(Context.WINDOW_SERVICE);

        int popupWidth = view.getMeasuredWidth();
        int popupHeight = view.getMeasuredHeight();
        int[] location = new int[2];
        parent.getLocationOnScreen(location);
        popupWindow.showAtLocation(parent, Gravity.NO_GRAVITY, (wm.getDefaultDisplay().getWidth() - width) / 2,
                location[1] + parent.getHeight());

        backgroundAlpha(0.5f);
        popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {

            @Override
            public void onDismiss() {
                backgroundAlpha(1f);
            }
        });

    }