全屏的FloatWindowService

怎么在android11的手机锁屏的情况下,弹出全屏的FloatWindowService(类似微信语音呼叫界面)？

我是用的是FloatWindowService 以下是详细设置(现在在锁屏的状态下只能点亮屏幕但无法弹出全屏的弹窗)
WindowManager mWindowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

// 将悬浮窗视图添加到 WindowManager 中
// 设置布局参数
        WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.MATCH_PARENT,
                WindowManager.LayoutParams.MATCH_PARENT,
                WindowManager.LayoutParams.TYPE_APPLICATION_OVERLAY,
                WindowManager.LayoutParams.TYPE_SYSTEM_ALERT   
                        | WindowManager.LayoutParams.FLAG_FULLSCREEN
                        | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS
                        | WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
                        | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
                        | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE,
                PixelFormat.TRANSLUCENT);

mFloatingView = LayoutInflater.from(this).inflate(R.layout.layout_floating_view, null);
mWindowManager.addView(mFloatingView, params);
现在只能在锁屏的时候点亮屏幕但无法在锁屏的界面上显示FloatWindowService