getRunningAppProcesses returns empty list on Android M(5.1.1)

Question

I just tested my app and CM, ATM Android Assistant, etc. All of them can not get the running process list but they works fine on pre OS version. So what's going on with Android M(5.1.1)? please help!

am = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);
List<RunningAppProcessInfo> list = am.getRunningAppProcesses();
Log.i(TAG, "LQ::examine list.size()=" + list.size());

Answer 1

I decide to use getRunningServices instead!

Du Speed Booster & Power Clean uses getRunningServices instead, maybe getRunningAppProcesses is deprecated in future.

Thank you google, thank you alphabet.

    Hashtable<String, List<ActivityManager.RunningServiceInfo>> hashtable = new Hashtable<String, List<ActivityManager.RunningServiceInfo>>();
    ActivityManager am = (ActivityManager) getContext().getSystemService(Context.ACTIVITY_SERVICE);
    for (ActivityManager.RunningServiceInfo rsi : am.getRunningServices(Integer.MAX_VALUE)) {
        if (isCanceled()) {
            return;
        }

        String pkgName = rsi.service.getPackageName();
        if (hashtable.get(pkgName) == null) {
            List<ActivityManager.RunningServiceInfo> list = new ArrayList<ActivityManager.RunningServiceInfo>();
            list.add(rsi);
            hashtable.put(pkgName, list);
        } else {
            hashtable.get(pkgName).add(rsi);
        }
    }

    int i = 0;
    int size =  hashtable.size();
    for (Iterator it = hashtable.keySet().iterator(); it.hasNext(); i++) {
        String key = (String) it.next();
        List<ActivityManager.RunningServiceInfo> value = hashtable.get(key);
        ProcessItem item = new ProcessItem(getContext(), value.get(0).pid, key, totalCpu, totalRam);
        if (!whiteList.contains(item.pkgName)) {
            if (!killList.contains(item.pkgName)) {
                killList.add(item.pkgName);
                ramTotal += item.ram;

                if (getListener() != null) {
                    Progress progress = new Progress(this);
                    progress.setArg1(i);
                    progress.setArg2(size);
                    progress.setMsg(item.appName);
                    progress.setObj(item);
                    getListener().onExamining(progress);
                }
            }
        }
    }
    hashtable.clear();
    hashtable = null;

Answer 2

Another option is to use UsageStatsManager.

UsageStatsManager mUsageStatsManager = (UsageStatsManager)getSystemService(Context.USAGE_STATS_SERVICE);
long endTime = System.currentTimeMillis();
long beginTime = endTime - 1000*60;

// We get usage stats for the last minute
List<UsageStats > stats = mUsageStatsManager.queryUsageStats(UsageStatsManager.INTERVAL_DAILY, beginTime, endTime);

// Sort the stats by the last time used
if(stats != null) 
{
    SortedMap<Long,UsageStats> mySortedMap = new TreeMap<Long,UsageStats>();
    for (UsageStats usageStats : stats) 
    {
        mySortedMap.put(usageStats.getLastTimeUsed(),usageStats);
    }
    if(mySortedMap != null && !mySortedMap.isEmpty()) 
    {
        topActivity =  mySortedMap.get(mySortedMap.lastKey()).getPackageName();
    }
}

In order for this to work, you need PACKAGE_USAGE_STATS permission. You can prompt the user to do this by opening the screen in settings:

Intent usageAccessIntent = new Intent( Settings.ACTION_USAGE_ACCESS_SETTINGS );
usageAccessIntent.addFlags( Intent.FLAG_ACTIVITY_NEW_TASK );
startActivity( usageAccessIntent );

Answer 3

I could get foreground app list by using getRunningServices() method on android 6.0. Thanks @thecr0w

ActivityManager mActivityManager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE); List appProcessInfoList = mActivityManager.getRunningServices(Integer.MAX_VALUE);