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

改变了:

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

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();
    }
}

目前已有多种答案，但我认为所有答案都忽略了这个问题的一个重要部分。 在从内部数据库或其表中读取数据之前，我们必须了解数据是如何存储在其中的，只有这样我们才能找到上述问题的解决方案:

如何在Android系统下以编程方式从设备上读取短信?

在android中，短信表是这样的

现在您可以从数据库中选择您想要的任何内容。在我们的例子中，我们只需要

身份，地址和正文

阅读短信时:

1.请求许可

int REQUEST_PHONE_CALL = 1;

   if (ContextCompat.checkSelfPermission(MainActivity.this, Manifest.permission.READ_SMS) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(MainActivity.this, new String[]{Manifest.permission.READ_SMS}, REQUEST_PHONE_CALL);
        }

or

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

2.现在你的代码是这样的

// Create Inbox box URI
Uri inboxURI = Uri.parse("content://sms/inbox");

// List required columns
String[] reqCols = new String[]{"_id", "address", "body"};

// Get Content Resolver object, which will deal with Content Provider
ContentResolver cr = getContentResolver();

// Fetch Inbox SMS Message from Built-in Content Provider
Cursor c = cr.query(inboxURI, reqCols, null, null, null);

// Attached Cursor with adapter and display in listview
adapter = new SimpleCursorAdapter(this, R.layout.a1_row, c,
        new String[]{"body", "address"}, new int[]{
        R.id.A1_txt_Msg, R.id.A1_txt_Number});
lst.setAdapter(adapter);

我希望这对你有所帮助。 谢谢。

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  ")
            }
        }
    }
}

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}")
    }
}

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;
}