如何以編程方式更改WindowManager.LayoutParams的類型？

Question

我看到我可以在鎖屏上顯示。但我希望它可以選擇。目前我使用這些PARAMS來實現這一目標：

WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT, 
WindowManager.LayoutParams.WRAP_CONTENT, 
WindowManager.LayoutParams.TYPE_SYSTEM_ERROR, 
WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED | 
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | 
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | 
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, PixelFormat.TRANSPARENT); 

而且，不顯示在鎖定屏幕上它，我用

WindowManager.LayoutParams params = new WindowManager.LayoutParams(
WindowManager.LayoutParams.WRAP_CONTENT, 
WindowManager.LayoutParams.WRAP_CONTENT, 
WindowManager.LayoutParams.TYPE_PHONE, 
WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE | 
WindowManager.LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH | 
WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS, PixelFormat.TRANSPARENT); 

另外他們的工作很好，但我想改變的類型和標誌編程。所以，我想用

params.flags &= ~WindowManager.LayoutParams.TYPE_SYSTEM_ERROR; 
params.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; 
params.flags |= WindowManager.LayoutParams.TYPE_PHONE; 
windowManager.updateViewLayout(myView,params); 

改變WindowManager.LayoutParams去除類型，刪除標誌，並設置一個新的類型， 但似乎並沒有工作。有誰知道如何正確地做到這一點？

Answer 1

您在設置type值爲flag。試試這個：

params.flags &= ~WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED; 

// type is no bit flag, so this should do it 
params.type = WindowManager.LayoutParams.TYPE_PHONE;