小编ano*_*500的帖子

我正在尝试获取手机上当前正在运行的应用程序的列表。这是我正在使用的代码：

if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
            UsageStatsManager usm = (UsageStatsManager)this.getSystemService(Context.USAGE_STATS_SERVICE);
            long time = System.currentTimeMillis();
            List<UsageStats> appList = usm.queryUsageStats(UsageStatsManager.INTERVAL_DAILY,  time - 10000*10000, time);
            if (appList != null && appList.size() == 0) {
                Log.d("Executed app", "######### NO APP FOUND ##########" );
            }
            if (appList != null && appList.size() > 0) {
                SortedMap<Long, UsageStats> mySortedMap = new TreeMap<Long, UsageStats>();
                for (UsageStats usageStats : appList) {
                    Log.d("Executed app", "usage stats executed : " +usageStats.getPackageName() + "\t\t ID: ");
                    mySortedMap.put(usageStats.getLastTimeUsed(), usageStats);
                }
                if (mySortedMap != …