在Android O上显示锁定屏幕对话框

Question

我能够在Oreo之前成功地在API上的锁定屏幕上添加一个对话框.似乎谷歌不再允许TYPE_SYSTEM_ERROR这个API上的标志了.

有没有办法在Android O上的锁定屏幕上显示对话框？

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适用于<Android O的代码

int flags = WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED
                | WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD
                | WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
                | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
                | WindowManager.LayoutParams.FLAG_DIM_BEHIND;

        int type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;

        WindowManager.LayoutParams windowLayoutParams = new WindowManager.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT,
                0,
                0,
                type,
                flags,
                PixelFormat.RGBA_8888);