Android悬浮窗置于任务栏之上

先看实现后的效果：

实现：

1.params.type = 2024;     //窗口参数等级要高于任务栏的等级（任务栏的时2019）

2.应用需要提升为系统级别。//android:sharedUserId="android.uid.systemui"     然后签名  

3.params参数设置

protected WindowManager.LayoutParams getTopLayoutParams() {
WindowManager.LayoutParams lp = new WindowManager.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, 2024, 0
| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
| WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
| WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL
| WindowManager.LayoutParams.FLAG_FULLSCREEN
| WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
| WindowManager.LayoutParams.FLAG_SPLIT_TOUCH,
PixelFormat.TRANSLUCENT);
lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
lp.flags |= WindowManager.LayoutParams.FLAG_HARDWARE_ACCELERATED;
lp.gravity = Gravity.RIGHT | Gravity.BOTTOM;
lp.width = 250;
lp.height = 480;
lp.setTitle("SearchPanel");
lp.windowAnimations = 0;
lp.softInputMode = WindowManager.LayoutParams.SOFT_INPUT_STATE_UNCHANGED
| WindowManager.LayoutParams.SOFT_INPUT_ADJUST_NOTHING;
return lp;
}

4.添加权限

<uses-permission android:name="android.permission.INTERNAL_SYSTEM_WINDOW" />
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
    <uses-permission android:name="android.permission.READ_FRAME_BUFFER" />
    <uses-permission android:name="android.permission.MANAGE_APP_TOKENS" />
    <uses-permission android:name="android.permission.SET_ORIENTATION" />
    <uses-permission android:name="android.permission.DISABLE_KEYGUARD" />