0

I am sending data from one application to another by using aidl. The application which sends the data is in front and the application which receives the data shows a dialog box to the user is in background. Now problem is that the dialog box is not visible until i switch back to that application. Is their anyway i can show the dialog without switching back to other application. Like a battery low dialog from android which comes on top off everything.

Yasir Ali
  • 11
  • 2
  • 3

3 Answers3

0
ActivityManager manager = (ActivityManager) getApplicationContext().getSystemService(ACTIVITY_SERVICE);

// get the context from the currently running task
List< ActivityManager.RunningTaskInfo > taskInfo = manager.getRunningTasks(1);
Context context = taskInfo.get(0).topActivity;

I'm not too sure if this actually works for activities that are not from your application, but I haven't got the resources to test it myself at the moment, before adding this as answer. It's worth a try if you actually are able to retrieve the current top activity with this. I just hope my memory gave me the right syntax...

Smokez
  • 382
  • 1
  • 5
0

You can achieve this using WindowManager , the application which receives the data should have a background service . If you are posting a broadcast event to pass data to other application, then when the application receives the data , start a service to display the dialog.

The dialog can be a custom dialog , which need to be added as a view to WindowManager

Ok, Here is a sample with a custom dialog. You can try same approach with the default AlertDialog

When the application receive the event , start the service and In Service when onStartCommand called , show the dialog.

Follow this steps…..

Get the instance of WindowManager

     WindowManager  windowManager = (WindowManager) getSystemService(WINDOW_SERVICE);

Inflate the custom view

     View dialogView = View.inflate(getBaseContext(),R.layout.dialog_layout,null);

Add listener to the view. 

  dialogView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                windowManager.removeView(dialogView);
                dialogView = null;
            }
        });

Set Window manager params

    WindowManager.LayoutParams params = new WindowManager.LayoutParams(
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.WRAP_CONTENT,
                WindowManager.LayoutParams.TYPE_PHONE,
                WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD,
                PixelFormat.TRANSLUCENT);

     params.gravity = Gravity.CENTER | Gravity.CENTER;

Add the view to Window Manager

   windowManager.addView(dialogView, params);

Also add SYSTEM_ALERT_WINDOW permission in manifest

  <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />
Libin
  • 16,967
  • 7
  • 61
  • 83
0

Actually, you need to add following permission to your manifest file to achieve what you want:
android.permission.SYSTEM_ALERT_WINDOW

http://developer.android.com/reference/android/Manifest.permission.html#SYSTEM_ALERT_WINDOW

Answer on following StackOverflow thread provides an example of how to do this:
Having application running above other app

Community
  • 1
  • 1
Anshul
  • 79
  • 3