Question

我正在使用kiosk xamarin.android app。我需要知道我当前的前台应用(PackageName)是什么。

尝试了一些样品，但没有用。

- 样本1 -

ActivityManager activityManager = (ActivityManager)BaseContext.GetSystemService(ActivityService);
            List<ActivityManager.RunningAppProcessInfo> runningProcesses = activityManager.RunningAppProcesses.ToList();
            foreach (ActivityManager.RunningAppProcessInfo processInfo in runningProcesses)
            {
                if (processInfo.Importance == Android.App.Importance.Foreground)
                {
                    foreach (String activeProcess in processInfo.PkgList)
                    {
                        if (activeProcess.Equals(_context.PackageName))
                        {
                            return true;
                        }
                    }
                }
            }

- 样本2 -

ActivityManager activityManager = (ActivityManager)GetSystemService(Context.ActivityService);
var packageName = activityManager.RunningAppProcesses;

- 样本3 -

var am = _context.GetSystemService(ActivityService).JavaCast<ActivityManager>();
IList<ActivityManager.RunningTaskInfo> taskInfo = am.GetRunningTasks(5);
var componentInfo = taskInfo[0].TopActivity;

我在OnPause()中调用这些代码，但所有这些代码只返回我的任务(my package name)。

我也跟着这个例子 find application running in foreground from service

如果有人能给我至少一个理由，我感到非常高兴。

Answer 1

终于找到了答案

Android 5.1.1 and above - getRunningAppProcesses() returns my application package only

UsageStatsManager usm = (UsageStatsManager)this.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();
        }
    }

检查在android前台运行的特定包名称

1 个答案: