Android 获取当前网速

工具类

public class NetWorkSpeedUtils {
    private Context context;
    private Handler mHandler;

    private long lastTotalRxBytes = 0;
    private long lastTimeStamp = 0;

    public NetWorkSpeedUtils(Context context, Handler mHandler){
        this.context = context;
        this.mHandler = mHandler;
    }

    TimerTask task = new TimerTask() {
        @Override
        public void run() {
            showNetSpeed();
        }
    };

    public void startShowNetSpeed(){
        lastTotalRxBytes = getTotalRxBytes();
        lastTimeStamp = System.currentTimeMillis();
        new Timer().schedule(task, 1000, 1000); // 1s后启动任务，每2s执行一次

    }

    private long getTotalRxBytes() {
        return TrafficStats.getUidRxBytes(context.getApplicationInfo().uid) == TrafficStats.UNSUPPORTED ? 0 :(TrafficStats.getTotalRxBytes()/1024);//转为KB
    }

    private void showNetSpeed() {
        long nowTotalRxBytes = getTotalRxBytes();
        long nowTimeStamp = System.currentTimeMillis();
        long speed = ((nowTotalRxBytes - lastTotalRxBytes) * 1000 / (nowTimeStamp - lastTimeStamp));//毫秒转换
        long speed2 = ((nowTotalRxBytes - lastTotalRxBytes) * 1000 % (nowTimeStamp - lastTimeStamp));//毫秒转换

        lastTimeStamp = nowTimeStamp;
        lastTotalRxBytes = nowTotalRxBytes;

        Message msg = mHandler.obtainMessage();
        msg.what = 100;
        msg.obj = String.valueOf(speed) + "." + String.valueOf(speed2) + " kb/s";
        mHandler.sendMessage(msg);//更新界面
    }
}

使用

 new NetWorkSpeedUtils(this, mNetHnadler).startShowNetSpeed();

   private Handler mNetHnadler = new Handler() {
        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case 100:
                    netSpeedTV.setText(msg.obj.toString());
                    break;
            }
            super.handleMessage(msg);
        }
    };