Bring your launcher task to front

TaskManager.java

public class TaskManager {

    /**
     * Bring up launcher task to front
     */
    public void navToLauncherTask(@Nonnull Context appContext) {
        ActivityManager activityManager = (ActivityManager) appContext.getSystemService(Context.ACTIVITY_SERVICE);
        // iterate app tasks available and navigate to launcher task (browse task)
        final List<ActivityManager.AppTask> appTasks = activityManager.getAppTasks();
        for (ActivityManager.AppTask task : appTasks) {
            final Intent baseIntent = task.getTaskInfo().baseIntent;
            final Set<String> categories = baseIntent.getCategories();
            if (categories != null && categories.contains(Intent.CATEGORY_LAUNCHER)) {
                task.moveToFront();
                return;
            }
        }
    }
}