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  1. package com.okedroid.myapplication;
  2.  
  3. import android.os.Bundle;
  4. import android.support.v7.app.AppCompatActivity;
  5. import android.widget.RadioButton;
  6. import android.widget.RadioGroup;
  7. import android.widget.RadioGroup.OnCheckedChangeListener;
  8. import android.widget.Toast;
  9.  
  10.  
  11. public class MainActivity extends AppCompatActivity implements OnCheckedChangeListener {
  12.  
  13.     RadioButton rb1,rb2;
  14.     RadioGroup rg;
  15.  
  16.     @Override
  17.     protected void onCreate(Bundle savedInstanceState) {
  18.         super.onCreate(savedInstanceState);
  19.         setContentView(R.layout.activity_main);
  20.  
  21.         rg = (RadioGroup)findViewById(R.id.rg);
  22.         rb1 = (RadioButton)findViewById(R.id.rbbaso);
  23.         rb2 = (RadioButton)findViewById(R.id.rbMie);
  24.         rg.setOnCheckedChangeListener(this);
  25.     }
  26.     public void onCheckedChanged(RadioGroup group,
  27.                                  int checkedId) {
  28.         if(checkedId==R.id.rbbaso)
  29.         {
  30.             Toast.makeText(this, "Anda Membeli Baso Tahu",
  31.                     Toast.LENGTH_SHORT).show();
  32.  
  33.         }
  34.         if(checkedId==R.id.rbMie)
  35.         {
  36.             Toast.makeText(this, "Anda Membeli Mie Ayam", Toast.LENGTH_SHORT).show();
  37.         }
  38.  
  39.     }
  40. }
');