How can I read SMS messages from the device programmatically in Android?

Question

I want to retrieve the SMS messages from the device and display them?

Answer 1

Kotlin Code to read SMS :

1- Add this permission to AndroidManifest.xml :

2-Create a BroadCastreceiver Class :

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
    var messages: Array  = 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-Get SMS Permission if Android 6 and above:

   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- Add this request code to Activity or fragment :

 companion object {
    const val PERMISSIONS_REQUEST_READ_SMS = 100
   }

5- Override Check permisstion Request result fun :

 override fun onRequestPermissionsResult(
    requestCode: Int, permissions: Array,
    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  ")
            }
        }
    }
}