Android 获取4G信号强度的方法

仅备份

package com.ztl.monitor4g;import android.annotation.SuppressLint;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Build;
import android.os.IBinder;
import android.os.Message;
import android.telephony.CellInfo;
import android.telephony.CellInfoLte;
import android.telephony.PhoneStateListener;
import android.telephony.ServiceState;
import android.telephony.SignalStrength;
import android.telephony.TelephonyManager;
import android.util.Log;import androidx.annotation.RequiresApi;import org.json.JSONException;
import org.json.JSONObject;import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Stack;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;import ZtlApi.ZtlManager;public class MainService extends Service {private static final String TAG = "MainService";public static String ver = "20201121";public static MainService Instatnce = null;TelephonyManager mTelephonyManager;MyPhoneStateListener myListener;public MainService() {Log.e("MainService()","MainService() 被调用");Instatnce = this;}@Overridepublic void onCreate(){Log.e(TAG, "onCreate is call. ver:" + ver);ZtlManager.GetInstance().setContext(this);mTelephonyManager = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);if( Build.VERSION.SDK_INT <25 ){myListener = new MyPhoneStateListener();//5.1只能用这个mTelephonyManager.listen(null, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);mTelephonyManager.listen(myListener, PhoneStateListener.LISTEN_NONE);mTelephonyManager.listen(myListener, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS);}else{//7.1 这个才是对的 5.1返回空new Thread(new Runnable() {@Overridepublic void run() {TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);while (true){@SuppressLint("MissingPermission") List<CellInfo> cellInfoList = tm.getAllCellInfo();if(cellInfoList != null){for (CellInfo cellInfo : cellInfoList){if (cellInfo instanceof CellInfoLte){//cast to CellInfoLte and call all the CellInfoLte methods you needint dbm = ((CellInfoLte)cellInfo).getCellSignalStrength().getDbm();int asu = ((CellInfoLte)cellInfo).getCellSignalStrength().getAsuLevel();String provider = getProvider();String celluarType = getCellularType();String logTxt = String.format("%s %s dbm:%d asu:%d \n", provider, celluarType, dbm, asu);logFile(logTxt, true);Log.i("mb_signal info",provider + " " + celluarType+ " dbm:" + dbm +" asu:" + asu);break;}}}try {Thread.sleep(1000 );} catch (InterruptedException e) {e.printStackTrace();}}}}).start();}}@Overridepublic IBinder onBind(Intent intent) {// TODO: Return the communication channel to the service.throw new UnsupportedOperationException("Not yet implemented");}@Overridepublic void onDestroy() {super.onDestroy();}//输出调试文本public static void logFile(String txt, boolean genDate) {String final_txt = "";if (genDate) {SimpleDateFormat dateformat = new SimpleDateFormat("[yyyy-MM-dd HH:mm:ss]");String dateStr = dateformat.format(System.currentTimeMillis());final_txt = dateStr;}try {FileOutputStream outSTr = new FileOutputStream(new File("/sdcard/Download/4glog.txt"), true);BufferedOutputStream Buff = new BufferedOutputStream(outSTr);Buff.write(final_txt.getBytes());Buff.write(txt.getBytes());Buff.flush();Buff.close();} catch (IOException e) {e.printStackTrace();}}String getProvider(){@SuppressLint("MissingPermission")String IMSI = mTelephonyManager.getSubscriberId();//Log.i("qweqwes", "运营商代码" + IMSI);String ProvidersName = "Unknown";if (IMSI != null) {if (IMSI.startsWith("46000") || IMSI.startsWith("46002") || IMSI.startsWith("46007") || IMSI.startsWith("46004")) {ProvidersName = "中国移动";} else if (IMSI.startsWith("46001") || IMSI.startsWith("46006")) {ProvidersName = "中国联通";} else if (IMSI.startsWith("46003") || IMSI.startsWith("46011")) {ProvidersName = "中国电信";} elseProvidersName = IMSI;} else {}return ProvidersName;}@SuppressLint("MissingPermission")String getCellularType(){String cellularType="";int nSubType = mTelephonyManager.getNetworkType();if (nSubType == TelephonyManager.NETWORK_TYPE_GPRS|| nSubType == TelephonyManager.NETWORK_TYPE_EDGE|| nSubType == TelephonyManager.NETWORK_TYPE_CDMA|| nSubType == TelephonyManager.NETWORK_TYPE_GSM) {cellularType = "2G";} else if (nSubType == TelephonyManager.NETWORK_TYPE_UMTS|| nSubType == TelephonyManager.NETWORK_TYPE_HSDPA|| nSubType == TelephonyManager.NETWORK_TYPE_EVDO_0) {cellularType= "3G";} else if (nSubType == TelephonyManager.NETWORK_TYPE_LTE) {cellularType= "4G";} else if (nSubType == TelephonyManager.NETWORK_TYPE_NR) {cellularType= "5G";}else  if(nSubType == TelephonyManager.NETWORK_TYPE_UNKNOWN){cellularType= "0G";}elsecellularType = String.valueOf( nSubType );return cellularType;}//5.1用这个private class MyPhoneStateListener extends PhoneStateListener {@Overridepublic void onSignalStrengthsChanged(SignalStrength signalStrength) {super.onSignalStrengthsChanged(signalStrength);try {Method method = signalStrength.getClass().getMethod("getDbm");int dbm = (int) method.invoke(signalStrength);Method method1 = signalStrength.getClass().getMethod("getAsuLevel");int asu = (int) method1.invoke(signalStrength);String provider = getProvider();String celluarType = getCellularType();String logTxt = String.format("%s %s dbm:%d asu:%d \n", provider, celluarType, dbm, asu);logFile(logTxt, true);Log.e("mb_signal info",provider + " " + celluarType+ " dbm:" + dbm +" asu:" + asu);//通过这个方法能获取出和系统一样的信号格数//Method method2 = signalStrength.getClass().getMethod("getLteLevel");//int level = method2.invoke(signalStrength);} catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException e) {e.printStackTrace();Log.d("TAG", "onSignalStrengthsChanged: 獲取4G訊號強度值失敗");}}@Overridepublic void onServiceStateChanged(ServiceState serviceState) {int state = serviceState.getState();if( state == ServiceState.STATE_EMERGENCY_ONLY){Log.e("手机网络状态","STATE_EMERGENCY_ONLY");logFile("手机网络状态:STATE_EMERGENCY_ONLY\n", true);}else if( state == ServiceState.STATE_OUT_OF_SERVICE){Log.e("手机网络状态","STATE_OUT_OF_SERVICE");logFile("手机网络状态:STATE_OUT_OF_SERVICE\n", true);}else if( state == ServiceState.STATE_IN_SERVICE){Log.e("手机网络状态", "STATE_IN_SERVICE" );logFile("手机网络状态:STATE_IN_SERVICE\n", true);}else if(state == ServiceState.STATE_POWER_OFF){Log.e("手机网络状态", "STATE_POWER_OFF" );logFile("手机网络状态:STATE_POWER_OFF\n", true);}else{Log.e("手机网络状态", "" + state);logFile("手机网络状态:" + state+"\n", true);}}}}

既非原创也非抄袭。本人只做搬运和融合。特此声明

引用地址：

https://www.itread01.com/content/1545403538.html

https://blog.csdn.net/zjy764219923/article/details/104944238

https://www.it610.com/article/1293138498462752768.htm

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