안드로이드 - ImageView 사용

package com.example.mobileapp;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RadioButton;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {


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

        RadioButton b1 = (RadioButton) findViewById(R.id.radioButton1);
        RadioButton b2 = (RadioButton) findViewById(R.id.radioButton2);

        b1.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
            @Override
            public void onCheckedChanged(CompoundButton compoundButton,boolean b){
                ImageView i = (ImageView) findViewById(R.id.imageView);
                if( b == true){
                    switch (compoundButton.getId()){
                        case R.id.radioButton1:
                            i.setImageResource(R.drawable.android22);
                            break;
                        case R.id.radioButton2:
                            i.setImageResource(R.drawable.sample1);
                    }
                }
            }
        });

        b2.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener(){
            @Override
            public void onCheckedChanged(CompoundButton compoundButton,boolean b){
                ImageView i = (ImageView) findViewById(R.id.imageView);
                if( b == true){
                    switch (compoundButton.getId()){
                        case R.id.radioButton1:
                            i.setImageResource(R.drawable.android22);
                            break;
                        case R.id.radioButton2:
                            i.setImageResource(R.drawable.sample1);
                    }
                }
            }
        });


    }



}

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