버튼, 라디오버튼 만들어서 클릭 시 색 변환

-버튼, 라디오버튼 만들어서 클릭 시 색변환 

-버튼 RED누르면 라디오버튼 RED도 동시에 클릭됨 

 

<MainActivity>

package com.example.graphic;

import androidx.appcompat.app.AppCompatActivity;

import android.graphics.Color;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import android.widget.RadioButton;
import android.widget.RadioGroup;

import java.text.BreakIterator;

public class MainActivity extends AppCompatActivity {

    LinearLayout layout;
    RadioGroup radioGroup;
    RadioButton radioRed, radioGreen, radioBlue;


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

        radioRed = findViewById(R.id.radioRed);
        radioGreen = findViewById(R.id.radioGreen);
        radioBlue = findViewById(R.id.radioBlue);

        radioGroup = findViewById(R.id.radioGroup);
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                switch (checkedId){
                    case R.id.radioRed:
                        layout.setBackgroundColor(Color.RED);
                        radioRed.setTextColor(Color.RED);
                        radioGreen.setTextColor(Color.BLACK);
                        radioBlue.setTextColor(Color.BLACK);
                        break;

                    case R.id.radioGreen:
                        layout.setBackgroundColor(Color.GREEN);
                        radioRed.setTextColor(Color.BLACK);
                        radioGreen.setTextColor(Color.GREEN);
                        radioBlue.setTextColor(Color.BLACK);
                        break;

                    case R.id.radioBlue:
                        layout.setBackgroundColor(Color.BLUE);
                        radioRed.setTextColor(Color.BLACK);
                        radioGreen.setTextColor(Color.BLACK);
                        radioBlue.setTextColor(Color.BLUE);
                        break;
                }
            }
        });
    }

    public void onClick(View view) {
        switch (view.getId()){
            case R.id.btnRed:
                layout.setBackgroundColor(Color.RED);
                radioRed.setChecked(true);
                break;

            case R.id.btnGreen:
                layout.setBackgroundColor(Color.GREEN);
                radioGreen.setChecked(true);
                break;

            case R.id.btnBlue:
                layout.setBackgroundColor(Color.GREEN);
                radioBlue.setChecked(true);
                break;
        }

    }
}

 

<activity_main.xml>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id="@+id/main"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btnRed"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:textColor="#F15252"
            android:text="RED" />

        <Button
            android:id="@+id/btnGreen"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:textColor="#54B354"
            android:text="GREEN" />

        <Button
            android:id="@+id/btnBlue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:onClick="onClick"
            android:textColor="#101055"
            android:text="BLUE" />
    </LinearLayout>

    <RadioGroup
        android:id="@+id/radioGroup"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#ffffff">

        <RadioButton
            android:id="@+id/radioRed"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="RED" />

        <RadioButton
            android:id="@+id/radioGreen"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="GREEN" />

        <RadioButton
            android:id="@+id/radioBlue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="BLUE" />
    </RadioGroup>
</LinearLayout>