Java

//BERIKUT ADALAH SOURCE CODE JAVA,TOTAL ADA 3 
//TAMPILAN KE-1 (LOGIN)
package com.example.replicate2;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class Login extends AppCompatActivity {

    //list elemen
    TextView tvmobilenumber;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        tvmobilenumber=findViewById(R.id.tvmobilenumber);
        tvmobilenumber.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent in = new Intent(Login.this,mobile_login.class);
                startActivity(in);
            }
        });

    }
}




//TAMPILAN KE-2 (MOBILE LOGIN)
package com.example.replicate2;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class mobile_login extends AppCompatActivity {

    Button btncircle;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mobile_login);

        btncircle=findViewById(R.id.btncircle);
        btncircle.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent in = new Intent(mobile_login.this,sms_code.class);
                startActivity(in);

            }
        });

        };
    }




//TAMPILAN KE-3 (TERAKHIR/SMS_CODE)
package com.example.replicate2;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class sms_code extends AppCompatActivity {

    Button btnsms;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sms_code);

        btnsms=findViewById(R.id.btnsms);
        btnsms.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent sms = new Intent(sms_code.this, Kalkulator.class);
                startActivity(sms);
            }
        });
    }
}