It is easy to get a list of running tasks from the ActivityManager service on Android L, and the current active task is returned first. But it don't work on Android M any more, the return list only contains my app task. Is there any way to settle it?
My code:
List<ActivityManager.RunningAppProcessInfo> runningAppProcessInfos = activityManager.getRunningAppProcesses();
for (int i = 0; i < runningAppProcessInfos.size(); i++) {
ActivityManager.RunningAppProcessInfo runningAppProcessInfo = runningAppProcessInfos.get(i);
if (runningAppProcessInfo.importance == ActivityManager.RunningAppProcessInfo.IMPORTANCE_FOREGROUND) {
return runningAppProcessInfo.pkgList[0];
}
}
you can use below code and get the current foreground activity package name.
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
UsageStatsManager usm = (UsageStatsManager) getSystemService("usagestats");
long time = System.currentTimeMillis();
List<UsageStats> appList = usm.queryUsageStats(UsageStatsManager.INTERVAL_DAILY,
time - 1000 * 1000, time);
if (appList != null && appList.size() > 0) {
SortedMap<Long, UsageStats> mySortedMap = new TreeMap<Long, UsageStats>();
for (UsageStats usageStats : appList) {
mySortedMap.put(usageStats.getLastTimeUsed(),
usageStats);
}
if (mySortedMap != null && !mySortedMap.isEmpty()) {
currentApp = mySortedMap.get(
mySortedMap.lastKey()).getPackageName();
}
}
} else {
ActivityManager am = (ActivityManager) getBaseContext().getSystemService(ACTIVITY_SERVICE);
currentApp = am.getRunningTasks(1).get(0).topActivity .getPackageName();
}
Add this permission in to Manifest file.
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.PACKAGE_USAGE_STATS" tools:ignore="ProtectedPermissions" />
Make sure you need to configure custom setting in your device to obtain the output you can config it with Setting > Security > Apps with usage access > Then enable your app permission