通过点击通知图标在锁屏上方显示Android活动

Question

我们需要显示信息而无需显示解锁屏幕。 我们能够通过这样的代码通常这样做：

WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON| 
       WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD| 
       WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED| 
       WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON 

但在这种情况下，它应该是在通知栏中点击提示图标。如何才能做到这一点？

---

我有一个服务在屏幕解锁后运行正常，工作正常。它打开图标点击活动。但是当屏幕被锁定时，我无法做到这一点。

public class notifysrvc extends Service { 
    @Override 
    public void onCreate() { 
     super.onCreate(); 
    } 
    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     Toast.makeText(this, "Service Started", Toast.LENGTH_LONG).show(); 
     showRecordingNotification(); 
     return Service.START_STICKY; 
    } 
    @Override 
    public void onDestroy() { 
     super.onDestroy(); 
     Toast.makeText(this, "Service Destroy", Toast.LENGTH_LONG).show(); 
    } 
    @Override 
    public IBinder onBind(Intent arg0) { 
     return null; 
    } 
    private void showRecordingNotification() { 
     NotificationCompat.Builder mBuilder = 
       new NotificationCompat.Builder(this) 
         .setSmallIcon(R.drawable.lifegaurdicon12) 
         .setContentTitle("Emergency") 
         .setOngoing(true) 
         .setPriority(Notification.PRIORITY_MAX) 
         .setContentText("Click here!"); 
// Creates an explicit intent for an Activity in your app 
     Intent resultIntent = new Intent(this, Menu.class); 
//Tried this add flags to make it work 
resultIntent.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON| 
       WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD| 
       WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED| 
       WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON); 
     TaskStackBuilder stackBuilder = TaskStackBuilder.create(this); 
// Adds the back stack for the Intent (but not the Intent itself) 
     stackBuilder.addParentStack(Menu.class); 
// Adds the Intent that starts the Activity to the top of the stack 
     stackBuilder.addNextIntent(resultIntent); 
     PendingIntent resultPendingIntent = 
       stackBuilder.getPendingIntent(
         0, 
         PendingIntent.FLAG_UPDATE_CURRENT 
       ); 
     mBuilder.setContentIntent(resultPendingIntent); 
     NotificationManager mNotificationManager = 
       (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); 
     mNotificationManager.notify(1, mBuilder.build()); 
    } 
} 

Answer 1

I tried it using remoteviews as suggested in few examples but it just doesn't work. 
I tried this but it just doesn't work 

     // NOTE: while creating pendingIntent: requestcode must be different! 
     NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this) 
       .setVisibility(Notification.VISIBILITY_PUBLIC) 
       .setSmallIcon(R.drawable.ic_launcher).setContentTitle("My Title") 
       .setContentText("Service running in the background") 
       .setOngoing(true); 
     Intent openIntent = new Intent(this, MainActivity.class); 


     PendingIntent pOpenIntent = PendingIntent.getActivity(this, 0, openIntent, 0); 
     mBuilder.setContentIntent(pOpenIntent); 
     // Gets an instance of the NotificationManager service 
     NotificationManager mNotifyMgr = 
       (NotificationManager) getSystemService(NOTIFICATION_SERVICE); 
// Builds the notification and issues it. 
     mNotifyMgr.notify(1090, mBuilder.build()); 
// Notification with exit button if supported 
     String ACTION_NOTIFICATION_EXITACTIVITY = "com.example.circle.myapplication.shownotifyactivity"; 
     Intent exitIntent = new Intent(); 
     exitIntent.setAction(ACTION_NOTIFICATION_EXITACTIVITY); 
     PendingIntent pExitIntent = PendingIntent.getBroadcast(this, 1, exitIntent, 0); 
     RemoteViews view = new RemoteViews(getPackageName(), R.layout.activity_shownotifyactivity); 
     view.setOnClickPendingIntent(R.id.notification_click, pExitIntent); 
     mBuilder.setContent(view); 
I tried the example [http://stackoverflow.com/questions/27673943/notification-action-button-not-clickable-in-lock-screen?answertab=active#tab-top][1] 


    [1]: http://stackoverflow.com/questions/27673943/notification-action-button-not-clickable-in-lock-screen?answertab=active#tab-top