Android:如何通过编程使用信号强度来计算移动互联网的速度(上传速度)

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkCapabilities;
import android.net.NetworkInfo;
import android.telephony.PhoneStateListener;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.util.Log;

public class SpeedCalculator {
    private static final String TAG = "SpeedCalculator";

    private Context mContext;
    private TelephonyManager mTelephonyManager;
    private PhoneStateListener mPhoneStateListener;

    public SpeedCalculator(Context context) {
        mContext = context;
        mTelephonyManager = (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE);
        mPhoneStateListener = new PhoneStateListener() {
            @Override
            public void onSignalStrengthsChanged(SignalStrength signalStrength) {
                super.onSignalStrengthsChanged(signalStrength);
                calculateUploadSpeed(signalStrength);
            }
        };
    }

    public void startCalculatingSpeed() {
        mTelephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
    }

    public void stopCalculatingSpeed() {
        mTelephonyManager.listen(mPhoneStateListener, PhoneStateListener.LISTEN_NONE);
    }

    private void calculateUploadSpeed(SignalStrength signalStrength) {
        int signalLevel = getSignalLevel(signalStrength);
        int maxUploadSpeed = getMaxUploadSpeed(signalLevel);
        Log.d(TAG, "Max Upload Speed: " + maxUploadSpeed + " Mbps");
    }

    private int getSignalLevel(SignalStrength signalStrength) {
        int signalLevel = -1;
        if (signalStrength != null) {
            signalLevel = signalStrength.getLevel();
        }
        return signalLevel;
    }

    private int getMaxUploadSpeed(int signalLevel) {
        int maxUploadSpeed = -1;
        ConnectivityManager connectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
        NetworkCapabilities networkCapabilities = connectivityManager.getNetworkCapabilities(connectivityManager.getActiveNetwork());
        if (networkCapabilities != null) {
            maxUploadSpeed = networkCapabilities.getLinkUpstreamBandwidthKbps() / 1000;
        }
        return maxUploadSpeed;
    }
}

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />