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

The easiest function

To read the sms I wrote a function that returns a Conversation object:

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

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

        val numbers = ArrayList()
        val messages = ArrayList()
        var results = ArrayList()

        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
        }

        completion(results)
    }

Using:

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

Or get only conversation of specific number:

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}")
    }
}