通过WindowManager添加view以及添加动画

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//mWm = (WindowManager) getSystemService(Context.WINDOW_SERVICE);WindowManager.LayoutParams params = new WindowManager.LayoutParams();        params.height = WindowManager.LayoutParams.WRAP_CONTENT;        params.width = WindowManager.LayoutParams.MATCH_PARENT;        params.format = PixelFormat.TRANSLUCENT;        params.type = WindowManager.LayoutParams.TYPE_TOAST; params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON                | // 表示window不需要获取焦点，也不需要接收各种输入事件            WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE                | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;params.gravity = Gravity.TOP;//添加动画params.windowAnimations = R.style.notice_dialog_anim_bottom2top;

下面是加载动画的一个资源文件

<style name="notice_dialog_anim_bottom2top">        <item name="android:windowEnterAnimation">@anim/notice_dialog_anim_top2bottom_in</item>        <item name="android:windowExitAnimation">@anim/notice_dialog_anim_top2bottom_out</item>    </style>

notice_dialog_anim_top2bottom_in

<translate xmlns:android="http://schemas.android.com/apk/res/android"           android:duration="1000"           android:fromXDelta="0"           android:fromYDelta="-100%"           android:toXDelta="0"           android:toYDelta="0"></translate>

notice_dialog_anim_top2bottom_out

<translate xmlns:android="http://schemas.android.com/apk/res/android"    android:duration="1000"    android:fromYDelta="0"    android:fromXDelta="0"    android:toXDelta="0"    android:toYDelta="-100%" ></translate>

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