Message

package com.example.message;

import androidx.appcompat.app.AppCompatActivity;

import android.Manifest;
import android.app.PendingIntent;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Bundle;
import android.telephony.SmsManager;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends AppCompatActivity {
    EditText t1,t2;
    Button m;
    String ph,nm;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        t1=findViewById(R.id.textview1);
        t2=findViewById(R.id.textview2);
        m= findViewById(R.id.message);
        m.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

               if(Build.VERSION.SDK_INT >=Build.VERSION_CODES.M)
               {
                   if(checkSelfPermission(Manifest.permission.SEND_SMS)== PackageManager.PERMISSION_GRANTED)
                   {
                       sendMessage();
                   }
                   else
                   {
                       requestPermissions(new String[]{Manifest.permission.SEND_SMS},1);
                   }
               }

            }
        });


    }
    public void sendMessage()
    {
        ph=t1.getText().toString();
        nm=t2.getText().toString();
        SmsManager smsManager= SmsManager.getDefault();
        smsManager.sendTextMessage(ph,null,nm,null,null);
    }
}