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我正在尝试获取我连接的当前单元的信号强度。到目前为止，我已经找到了这个例子：

http://www.android10.org/index.php/forums/44-maplocation/868-tutorialget-gsm-signal

但这只是为了在信号改变时得到一个 Toast。有没有办法将信号强度的值保存在变量中？

我使用以下代码尝试了此操作，方法是将值保存在变量上并获取它，但我一直在获取“初始值”。这是代码：

package org.mode.gsm;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.PhoneStateListener;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.widget.TextView;
import android.widget.Toast;

public class GetGsmSignalStrength extends Activity {

    TelephonyManager Tel;
    MyPhoneStateListener MyListener;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        TextView abcd = new TextView(this);
        abcd.setText(getRSSI());
        setContentView(abcd);
    }

    public String getRSSI() {
        MyListener = new MyPhoneStateListener();
        Context context = (Context) getApplicationContext();
        Tel = (TelephonyManager) context
                .getSystemService(Context.TELEPHONY_SERVICE);
        Tel.listen(MyListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);
        String GSMCinr = "GSM CINR = " + MyListener.getCinr();
        return GSMCinr;
    }

    private class MyPhoneStateListener extends PhoneStateListener {

        String cinr = "initial value";

        @Override
        public void onSignalStrengthsChanged(SignalStrength signalStrength) {
            super.onSignalStrengthsChanged(signalStrength);
            cinr = String.valueOf(signalStrength.getGsmSignalStrength());
            Toast.makeText(
                    getApplicationContext(),
                    "GSM Cinr = "
                            + String.valueOf(signalStrength
                                .getGsmSignalStrength()), Toast.LENGTH_LONG)
                    .show();
        }

        public String getCinr() {
            return cinr;
        }
    }
}

和清单：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="org.mode.gsm"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk android:minSdkVersion="7" />

    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_UPDATES" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name" >
        <activity
            android:label="@string/app_name"
            android:name=".GetGsmSignalStrength" >
            <intent-filter >
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
         </activity>
    </application>

</manifest>

如果有人可以帮助我保存信号强度的值，我将非常感激，或者建议任何其他方式来做到这一点......

谢谢

4

1 回答 1

1 
GetRssi listener = new GetRssi();
protected int Rssi;
Rssi = 99;

private class GetRssi extends PhoneStateListener 
{
    @Override  
    public void onSignalStrengthsChanged(SignalStrength signalStrength)
    {
         super.onSignalStrengthsChanged(signalStrength);
         Rssi  = signalStrength.getGsmSignalStrength();
    }
    }

Rssi 以整数声明；因此，在您可以创建一个返回 ""+Rssi 的函数（字符串）之后

public String getRssi(){
        return ""+Rssi;
}

您必须将值转换为 dBm。希望会有所帮助！！！

于 2012-04-20T14:33:01.620 回答