PopupWindow进出动画

例子：PopupWindow 动画

很多时候我们把PopupWindow用作自定义的菜单，需要一个从底部向上弹出的效果，这就需要为PopupWindow添加动画。

在工程res下新建anim文件夹，在anim文件夹先新建两个xml文件

menu_bottombar_in.xml

xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="250"
        android:fromYDelta="100.0%"
        android:toYDelta="0.0" />

set>

menu_bottombar_out.xml

xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android" >

    <translate
        android:duration="250"
        android:fromYDelta="0.0"
        android:toYDelta="100%" />

set>

在res/value/styles.xml添加一个sytle

    <style name="anim_menu_bottombar">
        <item name="android:windowEnterAnimation">@anim/menu_bottombar_initem>
        <item name="android:windowExitAnimation">@anim/menu_bottombar_outitem>
    style>

使用:

View popupView = getLayoutInflater().inflate(R.layout.popup_layout,
null);

 mPopupWindow = new PopupWindow(popupView, LayoutParams.MATCH_PARENT, LayoutParams.WRAP_CONTENT, true);
        mPopupWindow.setTouchable(true);
        mPopupWindow.setOutsideTouchable(true);
        mPopupWindow.setBackgroundDrawable(new BitmapDrawable(getResources(), (Bitmap) null));

        mPopupWindow.getContentView().setFocusableInTouchMode(true);
        mPopupWindow.getContentView().setFocusable(true);
        mPopupWindow.getContentView().setOnKeyListener(new OnKeyListener() {
            @Override
            public boolean onKey(View v, int keyCode, KeyEvent event) {
                if (keyCode == KeyEvent.KEYCODE_MENU && event.getRepeatCount() == 0
                        && event.getAction() == KeyEvent.ACTION_DOWN) {
                    if (mPopupWindow != null && mPopupWindow.isShowing()) {
                        mPopupWindow.dismiss();
                    }
                    return true;
                }
                return false;
            }
        });
    }

加上： mPopupWindow.setAnimationStyle(R.style.menu_anim_bottombar)

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