最简单的函数

为了读取短信，我写了一个返回Conversation对象的函数:

class Conversation(val number: String, val message: List<Message>)
class Message(val number: String, val body: String, val date: Date)

fun getSmsConversation(context: Context, number: String? = null, completion: (conversations: List<Conversation>?) -> Unit) {
        val cursor = context.contentResolver.query(Telephony.Sms.CONTENT_URI, null, null, null, null)

        val numbers = ArrayList<String>()
        val messages = ArrayList<Message>()
        var results = ArrayList<Conversation>()

        while (cursor != null && cursor.moveToNext()) {
            val smsDate = cursor.getString(cursor.getColumnIndexOrThrow(Telephony.Sms.DATE))
            val number = cursor.getString(cursor.getColumnIndexOrThrow(Telephony.Sms.ADDRESS))
            val body = cursor.getString(cursor.getColumnIndexOrThrow(Telephony.Sms.BODY))

            numbers.add(number)
            messages.add(Message(number, body, Date(smsDate.toLong())))
        }

        cursor?.close()

        numbers.forEach { number ->
            if (results.find { it.number == number } == null) {
                val msg = messages.filter { it.number == number }
                results.add(Conversation(number = number, message = msg))
            }
        }

        if (number != null) {
            results = results.filter { it.number == number } as ArrayList<Conversation>
        }

        completion(results)
    }

使用:

getSmsConversation(this){ conversations ->
    conversations.forEach { conversation ->
        println("Number: ${conversation.number}")
        println("Message One: ${conversation.message[0].body}")
        println("Message Two: ${conversation.message[1].body}")
    }
}

或只得到具体数字的对话:

getSmsConversation(this, "+33666494128"){ conversations ->
    conversations.forEach { conversation ->
        println("Number: ${conversation.number}")
        println("Message One: ${conversation.message[0].body}")
        println("Message Two: ${conversation.message[1].body}")
    }
}

读取短信的Kotlin代码:

1-将此权限添加到AndroidManifest.xml:

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

创建BroadCastreceiver类:

package utils.broadcastreceivers

import android.content.BroadcastReceiver
import android.content.Context
import android.content.Intent
import android.telephony.SmsMessage
import android.util.Log

class MySMSBroadCastReceiver : BroadcastReceiver() {
override fun onReceive(context: Context?, intent: Intent?) {
    var body = ""
    val bundle = intent?.extras
    val pdusArr = bundle!!.get("pdus") as Array<Any>
    var messages: Array<SmsMessage?>  = arrayOfNulls(pdusArr.size)

 // if SMSis Long and contain more than 1 Message we'll read all of them
    for (i in pdusArr.indices) {
        messages[i] = SmsMessage.createFromPdu(pdusArr[i] as ByteArray)
    }
      var MobileNumber: String? = messages[0]?.originatingAddress
       Log.i(TAG, "MobileNumber =$MobileNumber")         
       val bodyText = StringBuilder()
        for (i in messages.indices) {
            bodyText.append(messages[i]?.messageBody)
        }
        body = bodyText.toString()
        if (body.isNotEmpty()){
       // Do something, save SMS in DB or variable , static object or .... 
                       Log.i("Inside Receiver :" , "body =$body")
        }
    }
 }

3-获得短信权限如果Android 6及以上:

   if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M && 
    ActivityCompat.checkSelfPermission(context!!,
            Manifest.permission.RECEIVE_SMS
        ) != PackageManager.PERMISSION_GRANTED
    ) { // Needs permission

            requestPermissions(arrayOf(Manifest.permission.RECEIVE_SMS),
            PERMISSIONS_REQUEST_READ_SMS
        )

    } else { // Permission has already been granted

    }

4-将此请求代码添加到Activity或fragment:

 companion object {
    const val PERMISSIONS_REQUEST_READ_SMS = 100
   }

5- Override检查权限请求结果fun:

 override fun onRequestPermissionsResult(
    requestCode: Int, permissions: Array<out String>,
    grantResults: IntArray
) {
    when (requestCode) {

        PERMISSIONS_REQUEST_READ_SMS -> {
            if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                Log.i("BroadCastReceiver", "PERMISSIONS_REQUEST_READ_SMS Granted")
            } else {
                //  toast("Permission must be granted  ")
            }
        }
    }
}

String WHERE_CONDITION = unreadOnly ? SMS_READ_COLUMN + " = 0" : null;

改变了:

String WHERE_CONDITION = unreadOnly ? SMS_READ_COLUMN + " = 0 " : SMS_READ_COLUMN + " = 1 ";

谷歌Play服务有两个api，可用于简化基于短信的验证过程

短信检索器接口

提供完全自动化的用户体验，不需要用户手动输入验证码，也不需要任何额外的应用权限，应该在可能的情况下使用。但是，它要求您在消息体中放置自定义哈希代码，因此您还必须控制服务器端。

消息要求-唯一标识应用程序的11位哈希码 发件人要求—无 用户交互—无

在Android应用程序中请求短信验证

在服务器上进行短信验证

短信用户同意API

不需要自定义哈希码，但需要用户批准你的应用程序的请求，以访问包含验证码的消息。为了最大限度地减少向用户显示错误消息的机会，SMS用户同意将从用户的联系人列表中过滤出发件人的消息。

消息要求-至少包含一个数字的4-10位字母数字代码 发件人要求-发件人不能在用户的联系人列表中 用户交互-一键批准

短信用户同意API是谷歌播放服务的一部分。要使用它，你至少需要这些库的17.0.0版本:

implementation "com.google.android.gms:play-services-auth:17.0.0"
implementation "com.google.android.gms:play-services-auth-api-phone:17.1.0"

第一步:开始监听短信

SMS用户同意将监听包含一次性代码的传入SMS消息长达五分钟。它不会查看在启动之前发送的任何消息。如果知道发送一次性代码的电话号码，则可以指定senderPhoneNumber，如果不指定，则null将匹配任何号码。

 smsRetriever.startSmsUserConsent(senderPhoneNumber /* or null */)

步骤2:请求同意阅读消息

一旦你的应用程序接收到包含一次性代码的消息，它就会被广播通知。在这一点上，你没有同意阅读消息-相反，你给了一个意图，你可以开始提示用户同意。在你的BroadcastReceiver内部，你使用extras中的Intent来显示提示。 当您启动该意图时，它将提示用户允许读取单个消息。他们将会看到与你的应用共享的全部文本。

val consentIntent = extras.getParcelable<Intent>(SmsRetriever.EXTRA_CONSENT_INTENT)
startActivityForResult(consentIntent, SMS_CONSENT_REQUEST)

第三步:解析一次性代码，完成短信验证

当用户点击“允许”-是时候真正阅读消息了!在onActivityResult内部，你可以从数据中获得短信的全文:

val message = data.getStringExtra(SmsRetriever.EXTRA_SMS_MESSAGE)

然后解析SMS消息并将一次性代码传递到后端!

从API 19开始，你可以使用Telephony类;因为硬核值不会在每个设备中检索消息，因为内容提供程序Uri会因设备和制造商而变化。

public void getAllSms(Context context) {

    ContentResolver cr = context.getContentResolver();
    Cursor c = cr.query(Telephony.Sms.CONTENT_URI, null, null, null, null);
    int totalSMS = 0;
    if (c != null) {
        totalSMS = c.getCount();
        if (c.moveToFirst()) {
            for (int j = 0; j < totalSMS; j++) {
                String smsDate = c.getString(c.getColumnIndexOrThrow(Telephony.Sms.DATE));
                String number = c.getString(c.getColumnIndexOrThrow(Telephony.Sms.ADDRESS));
                String body = c.getString(c.getColumnIndexOrThrow(Telephony.Sms.BODY));
                Date dateFormat= new Date(Long.valueOf(smsDate));
                String type;
                switch (Integer.parseInt(c.getString(c.getColumnIndexOrThrow(Telephony.Sms.TYPE)))) {
                    case Telephony.Sms.MESSAGE_TYPE_INBOX:
                        type = "inbox";
                        break;
                    case Telephony.Sms.MESSAGE_TYPE_SENT:
                        type = "sent";
                        break;
                    case Telephony.Sms.MESSAGE_TYPE_OUTBOX:
                        type = "outbox";
                        break;
                    default:
                        break;
                }


                c.moveToNext();
            }
        }

        c.close();

    } else {
        Toast.makeText(this, "No message to show!", Toast.LENGTH_SHORT).show();
    }
}

这是一个微不足道的过程。您可以在源代码SMSPopup中看到一个很好的例子

检查以下方法:

SmsMmsMessage getSmsDetails(Context context, long ignoreThreadId, boolean unreadOnly)
long findMessageId(Context context, long threadId, long _timestamp, int messageType
void setMessageRead(Context context, long messageId, int messageType)
void deleteMessage(Context context, long messageId, long threadId, int messageType)

下面是阅读的方法:

SmsMmsMessage getSmsDetails(Context context,
                            long ignoreThreadId, boolean unreadOnly)
{
   String SMS_READ_COLUMN = "read";
   String WHERE_CONDITION = unreadOnly ? SMS_READ_COLUMN + " = 0" : null;
   String SORT_ORDER = "date DESC";
   int count = 0;
   // Log.v(WHERE_CONDITION);
   if (ignoreThreadId > 0) {
      // Log.v("Ignoring sms threadId = " + ignoreThreadId);
      WHERE_CONDITION += " AND thread_id != " + ignoreThreadId;
   }
   Cursor cursor = context.getContentResolver().query(
                      SMS_INBOX_CONTENT_URI,
                      new String[] { "_id", "thread_id", "address", "person", "date", "body" },
                      WHERE_CONDITION,
                      null,
                      SORT_ORDER);
   if (cursor != null) {
      try {
         count = cursor.getCount();
         if (count > 0) {
            cursor.moveToFirst();
            // String[] columns = cursor.getColumnNames();
            // for (int i=0; i<columns.length; i++) {
            // Log.v("columns " + i + ": " + columns[i] + ": " + cursor.getString(i));
            // }                                         
            long messageId = cursor.getLong(0);
            long threadId = cursor.getLong(1);
            String address = cursor.getString(2);
            long contactId = cursor.getLong(3);
            String contactId_string = String.valueOf(contactId);
            long timestamp = cursor.getLong(4);

            String body = cursor.getString(5);                             
            if (!unreadOnly) {
                count = 0;
            }

            SmsMmsMessage smsMessage = new SmsMmsMessage(context, address,
                          contactId_string, body, timestamp,
                          threadId, count, messageId, SmsMmsMessage.MESSAGE_TYPE_SMS);
            return smsMessage;
         }
      } finally {
         cursor.close();
      }
   }               
   return null;
}