sending sms using Smsmanager in a service for android 4.4 and above

Question

I'm working in a service which is being shown in foreground where i need to send sms i'm using following code in service class

SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage(phoneNo, null, "text", null, null);

and i had took following permission android:name="android.permission.SEND_SMS" but it's not working no message is being sent

Answer 1

Declare:

public static final int PERMISSION_CODE_SEND_SMS  = 123;  

Check if permission granted :

if (checkSelfPermission(android.Manifest.permission.SEND_SMS)
        != PackageManager.PERMISSION_GRANTED) {
    requestPermissions(new String[]{android.Manifest.permission.SEND_SMS},
            PERMISSION_CODE_SEND_SMS);

    return;
}

Now handle the response:

@Override
public void onRequestPermissionsResult(int requestCode,
    String permissions[], int[] grantResults) {
switch (requestCode) {
    case  PERMISSION_CODE_SEND_SMS: {
        if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {

            // permission was granted send SMS now

        } else {

            // permission denied ask again
        }
        return;
    }


  }
}

Answer 2

In main activity checked for permissions

   private void checkForSmsPermission() {
    if (ActivityCompat.checkSelfPermission(this,
            Manifest.permission.SEND_SMS) != PackageManager.PERMISSION_GRANTED) {
        ActivityCompat.requestPermissions(this,
                new String[]{Manifest.permission.SEND_SMS},
                MY_PERMISSIONS_REQUEST_SEND_SMS);
    } else {
        // Permission already granted. Enable the SMS button.
       permission=1;
    }
}


        @Override
     public void onRequestPermissionsResult(int requestCode,
                                       String permissions[], int[] grantResults) {
    // For the requestCode, check if permission was granted or not.
         switch (requestCode) {
        case MY_PERMISSIONS_REQUEST_SEND_SMS: {
            if (permissions[0].equalsIgnoreCase(Manifest.permission.SEND_SMS)
                    && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                // Permission was granted. Enable sms button.
                permission = 1;
            } else {
                // Permission denied.
                permission = 0;
                // Disable the sms button.

            }
         }
        }
      } 

and send permission detail to service class via intent as permission variable(int)

       checkForSmsPermission();
       final Intent intent = new Intent(this, Chat.class);
       intent.putExtra("permission",permission);
       ContextCompat.startForegroundService(this, intent);

in service class chked permission and sent message(when sent button is hit)

                if (permission==1) {
                SmsManager smsManager = SmsManager.getDefault();
                smsManager.sendTextMessage(phoneNo, null, message, null, null);
                Toast.makeText(getApplicationContext(), "SMS sent.",
                        Toast.LENGTH_LONG).show();
            } else
                {
                Toast.makeText(getApplicationContext(),
                        "SMS faild, please try again.", Toast.LENGTH_LONG).show();
                return;
            }