java – 确定上传的传输速率

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我正在开发一个上传大量数据的应用程序.我想确定上传的传输速率,以便在通知中显示.

>一个post建议使用WifiInfo,它不适用于移动数据.
>另一个post建议让网络类型来估计速度.

我对这些帖子的答案不满意,所以我再问一遍.

我见过显示上传传输速率的应用程序,以及一些自定义ROM,如Resurrection Remix.

如何确定这些上传的传输速率？

解决方法:

使用android.net.TrafficStats获得传输的业务量是可行的.以下是测量上游和下游传输速率的这种思想的实现.您可以通过将TrafficSpeedMeasurer.TrafficType.MOBILE传递给TrafficSpeedMeasurer构造函数来测量移动网络的速率,否则使用TrafficSpeedMeasurer.TrafficType.ALL将导致测量一般流量(WiFi /移动).另外,通过在MainActivity中设置SHOW_SPEED_IN_BITS = true,您可以将速度测量单位更改为每秒位数.

MainActivity.java

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    private static final boolean SHOW_SPEED_IN_BITS = false;

    private TrafficSpeedMeasurer mTrafficSpeedMeasurer;
    private TextView mTextView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mTextView = findViewById(R.id.connection_class);

        mTrafficSpeedMeasurer = new TrafficSpeedMeasurer(TrafficSpeedMeasurer.TrafficType.ALL);
        mTrafficSpeedMeasurer.startMeasuring();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mTrafficSpeedMeasurer.stopMeasuring();
    }

    @Override
    protected void onPause() {
        super.onPause();
        mTrafficSpeedMeasurer.removeListener(mStreamSpeedListener);
    }

    @Override
    protected void onResume() {
        super.onResume();
        mTrafficSpeedMeasurer.registerListener(mStreamSpeedListener);
    }

    private ITrafficSpeedListener mStreamSpeedListener = new ITrafficSpeedListener() {

        @Override
        public void onTrafficSpeedMeasured(final double upStream, final double downStream) {
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    String upStreamSpeed = Utils.parseSpeed(upStream, SHOW_SPEED_IN_BITS);
                    String downStreamSpeed = Utils.parseSpeed(downStream, SHOW_SPEED_IN_BITS);
                    mTextView.setText("Up Stream Speed: " + upStreamSpeed + "\n" + "Down Stream Speed: " + downStreamSpeed);
                }
            });
        }
    };

}

TrafficSpeedMeasurer.java

import android.net.TrafficStats;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
import android.os.Message;
import android.os.SystemClock;


public class TrafficSpeedMeasurer {

    private ITrafficSpeedListener mTrafficSpeedListener;
    private SamplingHandler mHandler;

    private TrafficType mTrafficType;
    private long mLastTimeReading;
    private long mPreviousUpStream = -1;
    private long mPreviousDownStream = -1;

    public TrafficSpeedMeasurer(TrafficType trafficType) {
        mTrafficType = trafficType;
        HandlerThread thread = new HandlerThread("ParseThread");
        thread.start();
        mHandler = new SamplingHandler(thread.getLooper());
    }

    public void registerListener(ITrafficSpeedListener iTrafficSpeedListener) {
        mTrafficSpeedListener = iTrafficSpeedListener;
    }

    public void removeListener(ITrafficSpeedListener iTrafficSpeedListener) {
        mTrafficSpeedListener = iTrafficSpeedListener;
    }

    public void startMeasuring() {
        mHandler.startSamplingThread();
        mLastTimeReading = SystemClock.elapsedRealtime();
    }

    public void stopMeasuring() {
        mHandler.stopSamplingThread();
        finalReadTrafficStats();
    }

    private void readTrafficStats() {
        long newBytesUpStream = (mTrafficType == TrafficType.MOBILE ? TrafficStats.getMobileTxBytes() : TrafficStats.getTotalTxBytes()) * 1024;
        long newBytesDownStream = (mTrafficType == TrafficType.MOBILE ? TrafficStats.getMobileRxBytes() : TrafficStats.getTotalRxBytes()) * 1024;

        long byteDiffUpStream = newBytesUpStream - mPreviousUpStream;
        long byteDiffDownStream = newBytesDownStream - mPreviousDownStream;

        synchronized (this) {
            long currentTime = SystemClock.elapsedRealtime();
            double bandwidthUpStream = 0;
            double bandwidthDownStream = 0;

            if (mPreviousUpStream >= 0) {
                bandwidthUpStream = (byteDiffUpStream) * 1.0 / (currentTime - mLastTimeReading);
            }
            if (mPreviousDownStream >= 0) {
                bandwidthDownStream = (byteDiffDownStream) * 1.0 / (currentTime - mLastTimeReading);
            }
            if (mTrafficSpeedListener != null) {
                mTrafficSpeedListener.onTrafficSpeedMeasured(bandwidthUpStream, bandwidthDownStream);
            }

            mLastTimeReading = currentTime;
        }

        mPreviousDownStream = newBytesDownStream;
        mPreviousUpStream = newBytesUpStream;
    }

    private void finalReadTrafficStats() {
        readTrafficStats();
        mPreviousUpStream = -1;
        mPreviousDownStream = -1;
    }

    private class SamplingHandler extends Handler {

        private static final long SAMPLE_TIME = 1000;
        private static final int MSG_START = 1;

        private SamplingHandler(Looper looper) {
            super(looper);
        }

        @Override
        public void handleMessage(Message msg) {
            switch (msg.what) {
                case MSG_START:
                    readTrafficStats();
                    sendEmptyMessageDelayed(MSG_START, SAMPLE_TIME);
                    break;
                default:
                    throw new IllegalArgumentException("Unknown what=" + msg.what);
            }
        }

        void startSamplingThread() {
            sendEmptyMessage(SamplingHandler.MSG_START);
        }

        void stopSamplingThread() {
            removeMessages(SamplingHandler.MSG_START);
        }

    }

    public enum TrafficType {
        MOBILE,
        ALL
    }

}

ITrafficSpeedListener.java

public interface ITrafficSpeedListener {

    void onTrafficSpeedMeasured(double upStream, double downStream);
}

Utils.java

import java.util.Locale;

public class Utils {

    private static final long B = 1;
    private static final long KB = B * 1024;
    private static final long MB = KB * 1024;
    private static final long GB = MB * 1024;

    public static String parseSpeed(double bytes, boolean inBits) {
        double value = inBits ? bytes * 8 : bytes;
        if (value < KB) {
            return String.format(Locale.getDefault(), "%.1f " + (inBits ? "b" : "B") + "/s", value);
        } else if (value < MB) {
            return String.format(Locale.getDefault(), "%.1f K" + (inBits ? "b" : "B") + "/s", value / KB);
        } else if (value < GB) {
            return String.format(Locale.getDefault(), "%.1f M" + (inBits ? "b" : "B") + "/s", value / MB);
        } else {
            return String.format(Locale.getDefault(), "%.2f G" + (inBits ? "b" : "B") + "/s", value / GB);
        }
    }

}

.

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