Sms Receive Permissions

Ow19m

Can Anyone tell me how I can write a program for permissions to Receive an sms from my App on Xamarin android ??Thanks .

Yelinzh

To listen the receive sms, try using a broadCastReceiver like below:

[BroadcastReceiver(Label = "SMS Receiver", Enabled = true, Exported = true)]
[IntentFilter(new[] { "android.provider.Telephony.SMS_RECEIVED" }, Priority = (int)IntentFilterPriority.HighPriority)]
public class CustomReceiver : BroadcastReceiver
{
    public string message, address = "";
    public static readonly string INTENT_ACTION = "android.provider.Telephony.SMS_RECEIVED";
    public override void OnReceive(Context context, Intent intent)
    {
        if (intent.HasExtra("pdus"))
        {
            var smsArray = (Java.Lang.Object[])intent.Extras.Get("pdus");
            foreach (var item in smsArray)
            {
                var sms = SmsMessage.CreateFromPdu((byte[])item);
                address = sms.OriginatingAddress;
                message = sms.MessageBody;
                Toast.MakeText(context, "Number : " + address + ",Message : " + message, ToastLength.Short).Show();
            }
        }
    }
}

If you test the code on Android api 23+, it requires to grant the permissions at runtime.

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Ow19m

android is considering sms related application as a dangerous permission, I have used the above code but it does not work,I am using android 9.0.

Yelinzh

For Android 9.0, you should change your application as SMS default application to read the sms. Or using ContentProvider to get the SMS info.