Android判断某个包名是否运行在顶层

判断某个包名是否运行在顶层

public static Boolean isTopActivity(Context context, String packageName) {
    if (context == null || TextUtils.isEmpty(packageName)) {
        return null;
    }

    ActivityManager activityManager = (ActivityManager) context.getSystemService(Context.ACTIVITY_SERVICE);
    List<ActivityManager.RunningTaskInfo> tasksInfo = activityManager.getRunningTasks(1);
    if (tasksInfo == null || tasksInfo.isEmpty()) {
        return null;
    }
    try {
        return packageName.equals(tasksInfo.get(0).topActivity.getPackageName());
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}