獲取鎖屏的可見性

Question

如何從服務中檢查KeyGuard（鎖屏）是否可見？我想支持原始和自定義鎖屏。

Answer 1

僅當設備關閉屏幕時，屏幕纔會鎖定。

您應該擴展BroadcastReceiver和實施onReceive，像這樣：

public class YourBroadcastReceiver extends BroadcastReceiver { 
    @Override 
    public void onReceive(Context context, Intent intent) { 
     if (Intent.ACTION_SCREEN_OFF.equalsIgnoreCase(intent.getAction())) { 
      //screen has been switched off! 
     } 
    } 
} 

然後你只需要註冊登記，當屏幕關閉時，你會開始接收事件：

IntentFilter filter = new IntentFilter(Intent.ACTION_SCREEN_ON); 
filter.addAction(Intent.ACTION_SCREEN_OFF); 
appBroadcastReceiver = new AppBroadcastReceiver(yourActivity); 
registerReceiver(appBroadcastReceiver, filter); 

在屏幕關閉後，用戶將其設備設置爲鎖定n秒的邊緣情況下，您可能需要在廣播接收器中爲ACTION_SCREEN_ON添加支票，並檢查第EM。