Android 9 增加以太网数据流量统计功能

1. NetworkStatsManager 中增加 TYPE_ETHERNET 类型

 private static NetworkTemplate createTemplate(int networkType, String subscriberId) {
       final NetworkTemplate template;
       switch (networkType) {
           case ConnectivityManager.TYPE_MOBILE:
               template = subscriberId == null
                       ? NetworkTemplate.buildTemplateMobileWildcard()
                       : NetworkTemplate.buildTemplateMobileAll(subscriberId);
               break;
           case ConnectivityManager.TYPE_WIFI:
               template = NetworkTemplate.buildTemplateWifiWildcard();
               break;
           case ConnectivityManager.TYPE_ETHERNET:
               template = NetworkTemplate.buildTemplateEthernet();
               break;
           default:
               throw new IllegalArgumentException("Cannot create template for network type "
                       + networkType + ", subscriberId '"
                       + NetworkIdentity.scrubSubscriberId(subscriberId) + "'.");
       }
       return template;
   }

2 . 应用就可以按照一下调用

 if(hasPermissionToReadNetworkStats()){
            val networkStatsManager = getSystemService(NETWORK_STATS_SERVICE) as NetworkStatsManager
            var networkStatsHelper = NetworkStatsHelper(networkStatsManager)
            var bucket: NetworkStats.Bucket? = null
            bucket = networkStatsManager.querySummaryForDevice(
                ConnectivityManager.TYPE_ETHERNET
                "",
                0,
                System.currentTimeMillis()
            )
            findViewById<TextView>(R.id.tv).text = "流量1为：${((bucket.rxBytes + bucket.txBytes)/1024/1024).toFloat()}"
            networkStatsHelper.getEveryAppData(this);
        }




private fun hasPermissionToReadNetworkStats(): Boolean {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M) {
            return true
        }
        val appOps = getSystemService(Context.APP_OPS_SERVICE) as AppOpsManager
        val mode = appOps.checkOpNoThrow(
            AppOpsManager.OPSTR_GET_USAGE_STATS,
            Process.myUid(), packageName
        )
        if (mode == AppOpsManager.MODE_ALLOWED) {
            return true
        }
        requestReadNetworkStats()
        return false
    }

    // 打开“有权查看使用情况的应用”页面
    private fun requestReadNetworkStats() {
        val intent = Intent(Settings.ACTION_USAGE_ACCESS_SETTINGS)
        startActivity(intent)
    }

3. 获取每个应用流量

public void getEveryAppData(MainActivity ma) throws RemoteException {
        NetworkStats summaryStats;
        long summaryRx = 0;
        long summaryTx = 0;
        NetworkStats.Bucket summaryBucket = new NetworkStats.Bucket();
        long summaryTotal = 0;
        summaryStats = networkStatsManager.querySummary(ConnectivityManager.TYPE_WIFI, "", 0, System.currentTimeMillis());
        do {
            summaryStats.getNextBucket(summaryBucket);
            int summaryUid = summaryBucket.getUid();
            Log.i(MainActivity.class.getSimpleName(), "uid:" + summaryBucket.getUid() + " rx:" + summaryBucket.getRxBytes() +
                    " tx:" + summaryBucket.getTxBytes()+ "包名  "+ma.getPackageManager().getNameForUid(summaryBucket.getUid()));
            summaryTotal += summaryBucket.getRxBytes() + summaryBucket.getTxBytes();
            Log.i(MainActivity.class.getSimpleName(), "总的流量:" + summaryTotal/1024/1024 );
        } while (summaryStats.hasNextBucket());
    }

由于获取的流量是分段的需要自己累加起来就是总的流量使用