使用：直接开启Services
具体代码：
import android.app.Service;
import android.content.Intent;
import android.net.TrafficStats;
import android.os.Handler;
import android.os.IBinder;
import android.util.Log;
import java.text.DecimalFormat;
import java.util.Timer;
import java.util.TimerTask;
public class NetWorkTrafficService extends Service {
private Handler handler = new Handler();
private Timer timer;
private long rxtxTotal = 0;
private boolean isNetBad = false;
private int time;
private double rxtxSpeed = 1.0f;
private DecimalFormat showFloatFormat = new DecimalFormat("0.00");
private Intent receiverIntent;
private static final String ACTION_MONITOR_WATCH_NETWORK_TRAFFIC_SPEED="com.example.network.traffic";
@Override
public IBinder onBind(Intent intent) {
return null;
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (timer == null) {
timer = new Timer();
timer.scheduleAtFixedRate(new RefreshTask(), 0L, (long) 2000);
}
receiverIntent = new Intent();
receiverIntent.setAction(ACTION_MONITOR_WATCH_NETWORK_TRAFFIC_SPEED);
int result = super.onStartCommand(intent, flags, startId);
return result;
}
// 定时任务
class RefreshTask extends TimerTask {
@Override
public void run() {
isNetBad = false;
long tempSum = TrafficStats.getTotalRxBytes()+ TrafficStats.getTotalTxBytes();
long rxtxLast = tempSum - rxtxTotal;
double tempSpeed = rxtxLast * 1000 / 2000;
rxtxTotal = tempSum;
if ((tempSpeed / 1024d) < 20 && (rxtxSpeed / 1024d) < 20) {
time += 1;
} else {
time = 0;
}
rxtxSpeed = tempSpeed;
Log.i("NetworkSpeed",showFloatFormat.format(tempSpeed / 1024d) + "kb/s");
if (time >= 4) {
// 连续四次检测网速都小于20kb/s 断定网速很差.
isNetBad = true;
Log.i("NetworkSpeed", "网速差： " + isNetBad);
time = 0; // 重新检测
}
if (isNetBad) {
handler.post(new Runnable() {
@Override
public void run() {
receiverIntent.putExtra("NetWorkSpeed", isNetBad);
//在这个地方，做你想要的处理，等待其他地方接收这个广播
sendBroadcast(receiverIntent);
}
});
}
}
}
@Override
public void onDestroy() {
super.onDestroy();
// Service被终止的同时也停止定时器继续运行
timer.cancel();
timer = null;
}
}
