Activitymanager.Getrunningtasks Is Deprecated Android

ActivityManager.getRunningTasks is deprecated android

This should help you get started

ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
List<ActivityManager.AppTask> tasks = activityManager.getAppTasks();

for (ActivityManager.AppTask task : tasks) {
    Log.d(TAG, "stackId: " + task.getTaskInfo().stackId);
}

Android 5.0+ getRunningTasks is deprecated

So here is an update. Tested in 5.0 and 5.1.1 device. Working perfectly.

if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) { //For versions less than lollipop
            ActivityManager am = ((ActivityManager) getSystemService(ACTIVITY_SERVICE));
            List<ActivityManager.RunningTaskInfo> taskInfo = am.getRunningTasks(5);
            top = taskInfo.get(0).topActivity.getPackageName();
            Log.v(TAG, "top app = " + top);
        }else{ //For versions Lollipop and above
            List<AndroidAppProcess> processes = ProcessManager.getRunningForegroundApps(getApplicationContext());
            Collections.sort(processes, new ProcessManager.ProcessComparator());
            for (int i = 0; i <=processes.size()-1 ; i++) {
                if(processes.get(i).name.equalsIgnoreCase("com.google.android.gms")) { //always the package name above/below this package is the top app
                    if ((i+1)<=processes.size()-1) { //If processes.get(i+1) available, then that app is the top app
                        top = processes.get(i + 1).name;
                    } else if (i!=0) { //If the last package name is "com.google.android.gms" then the package name above this is the top app
                        top = processes.get(i - 1).name;
                    } else{
                        if (i == processes.size()-1) { //If only one package name available
                            top = processes.get(i).name;
                        }
                    }
                    Log.v(TAG, "top app = " + top);
                }
            }
        }

Thanks to this library

Now i'm able to get foreground task in Android 5.0+

How to get all the tasks that are running currently

Use getRunningAppProcesses, which will return a list of RunningAppProcessInfo objects that will give you some data about each running app. One of the pieces of information you can retrieve about the app is its importance, which can have a value IMPORTANCE_FOREGROUND which indicates that the process is the currently active application!

Related Documentation:

getRunningAppProcesses

RunningAppProcessInfo

IMPORTANCE_FOREGROUND

If this helped you, feel free to press that arrow to the left :)

Alternative to getRunningTasks in Android L

The system statistics api evoked in your question is also presented here and the detailed API is here. As far as I can see this API won't allow you to get the current top activity.

i.e. you have the ability to receive UsageEvent with the type MOVE_TO_FOREGROUND by using UsageStatsManager.queryEvents but according javadoc :

The last few minutes of the event log will be truncated to prevent abuse by applications.

So it is really an API to get statistics, not to get realtime information. (note that the now deprecated getRunningTasks() was neither intended to retrieve realtime data : javadoc)

On the other hand, if you are only interested in top activity of your own app: you can use getAppTasks() returning a List<AppTask> where you can get the RecentTaskInfo with getTaskInfo

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EDIT : another approach is provided here.

It is based on UsageStats and UsageStats.getLastTimeUsed(). Drawback : it requires additional permission and gives you only the package name -not the activity-, but it gives you real time data.

How to get packagename of runningtask on Android M5.1.1

https://code.google.com/p/android-developer-preview/issues/detail?id=2347

Android suggests to use this for finding top application.
https://developer.android.com/reference/android/app/usage/UsageStatsManager.html

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