Android监听消息（二）——电话及短信监听

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——《微卡智享》

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前言

前面一篇《Android监听消息（一）——应用消息捕获》我们使用NotificationListenerService实现了应用的消息监听，但是电话和短信是接收不到的，所以这一篇我们就来解决怎么监听电话及短信，电话主要就是在响铃时发送来电人消息，短信的话是捕获到消息内容直接发送出来。

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实现思路

在Android中实现电话捕获用到的还是TelephonyManager，在Android12前TelephonyManager可以使用PhoneStateListener来进行监听，里面的onCallStateChanged可以直接获取到来电状态和来电号码，比较方便，如下图：

但是在Android12（sdk31）后，listen已经不能用了，需要使用registerTelephonyCallback来获取到来电状态，但是这里无法获取到来电号码了，所以为了实现接到到来电状态并能获取到来电人的信息，需要使用BroadcastReceiver来实现。

而捕获短信的消息则是使用android.telephony.SmsMessage，并且短信的接收也是通过BroadcastReceiver来实现，这样我们就把电话和短信接收直接写在一个BroadcastReceiver中即可。

代码实现

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权限申请

接着上一篇的Demo，我们在这个基础上再增加相关的设置，首先要捕获电话及短信，那相关的权限必须要先申请出来。

<uses-permission android:name="android.permission.ACTION_NOTIFICATION_LISTENER_SETTINGS" /><uses-permission android:name="android.permission.ANSWER_PHONE_CALLS" /><uses-permission android:name="android.permission.READ_PHONE_STATE" /><uses-permission android:name="android.permission.READ_PHONE_NUMBERS" /><uses-permission android:name="android.permission.CALL_PHONE" /><uses-permission android:name="android.permission.RECEIVE_SMS" /><uses-permission android:name="android.permission.SEND_SMS" /><uses-permission android:name="android.permission.READ_SMS" /><uses-permission android:name="android.permission.READ_CALL_LOG" /><uses-permission android:name="android.permission.WRITE_CALL_LOG" /><uses-permission android:name="android.permission.READ_CONTACTS" /><uses-permission android:name="android.permission.WRITE_CONTACTS" />

在Manifest中加入权限申请，当然Android6.0后需要动态申请权限了，所以要在MainActivity中加入动态申请权限。

//权限申请companion object {private const val REQUEST_CODE_PERMISSIONS = 10private val REQUIRED_PERMISSIONS = arrayOf(Manifest.permission.READ_PHONE_STATE, Manifest.permission.READ_PHONE_NUMBERS,Manifest.permission.ANSWER_PHONE_CALLS, Manifest.permission.CALL_PHONE,Manifest.permission.RECEIVE_SMS,Manifest.permission.SEND_SMS,Manifest.permission.READ_SMS, Manifest.permission.READ_CALL_LOG,Manifest.permission.WRITE_CALL_LOG, Manifest.permission.READ_CALL_LOG,Manifest.permission.WRITE_CONTACTS, Manifest.permission.READ_CONTACTS)}private fun allPermissionsGranted() = REQUIRED_PERMISSIONS.all {ContextCompat.checkSelfPermission(BaseApp.mContext, it) == PackageManager.PERMISSION_GRANTED}override fun onRequestPermissionsResult(requestCode: Int,permissions: Array<out String>,grantResults: IntArray) {super.onRequestPermissionsResult(requestCode, permissions, grantResults)if (requestCode == REQUEST_CODE_PERMISSIONS) {if (allPermissionsGranted()) {//监听开关按钮isListened = DataStoreHelper.getData(ISLISTENMSG, false)Log.i("pkg", "NLSrv ${isListened}")val status = if (isListened) 0 else 2NLSrvUtil.updateStatus(status)} else {Toast.makeText(this, "未开启权限.", Toast.LENGTH_SHORT).show()finish()}}}//onCreate中再加入申请权限的动作override fun onCreate(savedInstanceState: Bundle?) {super.onCreate(savedInstanceState)//申请权限if (!allPermissionsGranted()) {requestPermissions(REQUIRED_PERMISSIONS, REQUEST_CODE_PERMISSIONS)}}

电话及短信的BroadcastReceiver

这个广播接收是这篇的一个重点，先上代码：

package vac.test.notificationdemoimport android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.os.Build
import android.provider.Telephony
import android.service.notification.NotificationListenerService
import android.telecom.TelecomManager
import android.telephony.PhoneStateListener
import android.telephony.SmsMessage
import android.telephony.TelephonyCallback
import android.telephony.TelephonyManager
import android.util.Log
import com.jeremyliao.liveeventbus.LiveEventBus
import vac.test.notificationdemo.bean.CMessage
import java.util.Hashtable
import java.util.Objectsclass PhoneStateReceiver : BroadcastReceiver() {//当前来电号码var mPhoneNum: String? = nullvar mLastPhoneNum: String? = null//当前短信号码var mLastSmsPhoneNum: String? = nullvar mLastSmsContent: String? = nullval contactsht: Hashtable<String, String> = NLSrvUtil.getContactsHashTable()var telMng: TelephonyManager =BaseApp.mContext.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManagerfun createPhone(phonenum: String?): CMessage {val msg = CMessage()msg.packagename = "来电"msg.appname = "来电"msg.title = contactsht[phonenum] ?: "未知号码"msg.content = phonenum ?: "未知号码"return msg}fun createSms(phonenum: String?, content:String?): CMessage {val msg = CMessage()msg.packagename = "短信"msg.appname = "短信"msg.title = contactsht[phonenum] ?: "未知号码"msg.content = content ?: "未解析内容"return msg}init {telMng = BaseApp.mContext.getSystemService(Context.TELEPHONY_SERVICE) as TelephonyManagerif (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {telMng.registerTelephonyCallback(BaseApp.mContext.mainExecutor,object : TelephonyCallback(), TelephonyCallback.CallStateListener {override fun onCallStateChanged(state: Int) {when (state) {TelephonyManager.CALL_STATE_IDLE -> {Log.d("pkg", "挂断")mLastPhoneNum = nullmPhoneNum = null}TelephonyManager.CALL_STATE_OFFHOOK -> {Log.d("pkg", "接听")mLastPhoneNum = nullmPhoneNum = null}TelephonyManager.CALL_STATE_RINGING -> {Log.d("pkg", "CALL_STATE_RINGING")mPhoneNum?.let {if (mLastPhoneNum != it) {mLastPhoneNum = itval msg = createPhone(mPhoneNum)LiveEventBus.get<CMessage>(MESSAGE_RECV).post(msg)Log.d("pkg", "响，号${mPhoneNum}")}}}}}})} else {telMng.listen(object : PhoneStateListener() {override fun onCallStateChanged(state: Int, phoneNumber: String?) {when (state) {TelephonyManager.CALL_STATE_IDLE ->Log.d("log", "挂断")TelephonyManager.CALL_STATE_OFFHOOK ->Log.d("log", "接听")TelephonyManager.CALL_STATE_RINGING -> {Log.d("log", "响铃,来电号码：${phoneNumber}")val msg = createPhone(phoneNumber)LiveEventBus.get<CMessage>(MESSAGE_RECV).post(msg)}}}}, PhoneStateListener.LISTEN_CALL_STATE)}}override fun onReceive(context: Context, intent: Intent) {Log.d("pkg", "Action：${intent.action}")when (intent.action) {//监听电话状态"android.intent.action.PHONE_STATE" -> {mPhoneNum = intent.extras?.getString("incoming_number")Log.d("pkg", "号码：${mPhoneNum}")}Telephony.Sms.Intents.SMS_RECEIVED_ACTION -> {var curphonenum: String? = nullval content = StringBuilder()val smsbundle = intent.extrasval format = intent.getStringExtra("format")smsbundle?.let {val pdus = smsbundle.get("pdus") as Array<*>pdus?.let {for (item in it) {val message = SmsMessage.createFromPdu(item as ByteArray, format)//短信电话号码curphonenum = message.originatingAddresscontent.append(message.messageBody)val mills = message.timestampMillisval status = message.statusLog.i("pkg", "phonenum:${curphonenum}, mills:${mills}, status:${status}")}}}//判断相同的消息就不再发送，防止接收过多if(curphonenum == mLastSmsPhoneNum && content.toString() == mLastSmsContent) return//记录最后一次接收短信的号码和内容mLastSmsPhoneNum = curphonenummLastSmsContent = content.toString()Log.i("pkg", "phone:${mLastSmsPhoneNum},Content:${mLastSmsContent}")val msg = createSms(mLastSmsPhoneNum,mLastSmsContent)LiveEventBus.get<CMessage>(MESSAGE_RECV).post(msg)}}}
}

我的Demo程序使用的sdk是33,，TelephonyManager中使用registerTelephonyCallback来注册监听电话，上图红框中TelephonyManager.CALL_STATE_RINGING代表着响铃，也就是这个状态时直接使用LiveEventBus进行消息通讯。

定义了四个变量，主要是用于处理当前响铃的电话及收到短信的信息和号码，因为在测试过程中，使用广播接收时可能会触发多次，所以这里定义了变量用于处理多次接收相同的不再重复推送消息。

通过修改onReceive来判断是电话还是短信，短信中也加入了相同信息不再重复推送。

关于联系人信息

使用BroadcastReceiver接收到的都是来电的号码，现在很少有人去背号码了，所以这里需要将号码转换成联系人的信息再推送过来。

我们在Demo的工具类中加入了一个getContactsHashTable的函数，用于导出联系人信息存放于HashTable中，这样通过号码查找也快。

//获取联系人信息fun getContactsHashTable() : Hashtable<String,String> {val contactsht = Hashtable<String, String>()var cursor: Cursor? = nulltry{cursor = BaseApp.mContext.contentResolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,null)cursor?.let {while (it.moveToNext()){val phonename = it.getString(it.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME))val phonenum = it.getString(it.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.NUMBER))contactsht.put(phonenum, phonename)}}}catch (e: Exception) {e.printStackTrace()}finally {cursor?.let {it.close()}}return contactsht}