[Android/Java] 체크박스

Demo

MainActivity.java

package com.example.recyclerview;

import androidx.appcompat.app.AppCompatActivity;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;

import static com.example.recyclerview.Data.IMAGE_DRAWABLES;
import static com.example.recyclerview.Data.PROFILE_TEXT;

public class MainActivity extends AppCompatActivity {

    private CheckBox checkBox1, checkBox2, checkBox3, checkBox4;
    private Button btnReset, btnSubmit;

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

        checkBox1 = findViewById(R.id.check_box_01);
        checkBox2 = findViewById(R.id.check_box_02);
        checkBox3 = findViewById(R.id.check_box_03);
        checkBox4 = findViewById(R.id.check_box_04);
        btnReset = findViewById(R.id.btn_reset);
        btnSubmit = findViewById(R.id.btn_submit);

        btnSubmit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                StringBuffer result = new StringBuffer();
                result.append("My choice : ");

                if(checkBox1.isChecked()) {
                    result.append("\n" + checkBox1.getText().toString());
                }
                if(checkBox2.isChecked()) {
                    result.append("\n" + checkBox2.getText().toString());
                }
                if(checkBox3.isChecked()) {
                    result.append("\n" + checkBox3.getText().toString());
                }
                if(checkBox4.isChecked()) {
                    result.append("\n" + checkBox4.getText().toString());
                }
                Toast.makeText(getApplicationContext(), result, Toast.LENGTH_SHORT).show();
            }
        });
        btnReset.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if(checkBox1.isChecked()) {
                    checkBox1.setChecked(false);
                }
                if(checkBox2.isChecked()) {
                    checkBox2.setChecked(false);
                }
                if(checkBox3.isChecked()) {
                    checkBox3.setChecked(false);
                }
                if(checkBox4.isChecked()) {
                    checkBox4.setChecked(false);
                }

            }
        });
        checkBox1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                boolean checked = ((CheckBox) v).isChecked();
                /*if(checked)
                    Toast.makeText(getApplicationContext(), "great!!!", Toast.LENGTH_SHORT).show();*/
            }
        });
    }
    public void myCheckBokClickListener(View view) {
        boolean checked = ((CheckBox) view).isChecked();
        switch (view.getId()) {
            case R.id.check_box_01:
                if(checked)
                    Toast.makeText(getApplicationContext(), ((CheckBox) view).getText().toString(), Toast.LENGTH_SHORT).show();
                break;
            case R.id.check_box_02:
                if(checked)
                    Toast.makeText(getApplicationContext(), ((CheckBox) view).getText().toString(), Toast.LENGTH_SHORT).show();
                break;
            case R.id.check_box_03:
                if(checked)
                    Toast.makeText(getApplicationContext(), ((CheckBox) view).getText().toString(), Toast.LENGTH_SHORT).show();
                break;
            case R.id.check_box_04:
                if(checked)
                    Toast.makeText(getApplicationContext(), ((CheckBox) view).getText().toString(), Toast.LENGTH_SHORT).show();
                break;


        }
    }

}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_gravity="center" >

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Chosse"
        android:textSize="32dp"
        android:layout_gravity="center"/>

    <CheckBox
        android:id="@+id/check_box_01"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="myCheckBokClickListener"
        android:text="C++" />

    <CheckBox
        android:id="@+id/check_box_02"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="myCheckBokClickListener"
        android:text="Java" />

    <CheckBox
        android:id="@+id/check_box_03"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="myCheckBokClickListener"
        android:text="php" />

    <CheckBox
        android:id="@+id/check_box_04"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="myCheckBokClickListener"
        android:text="Python" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btn_reset"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="reset"
            android:layout_margin="10dp"/>

        <Button
            android:id="@+id/btn_submit"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:text="submit"
            android:layout_margin="10dp"/>

    </LinearLayout>
</LinearLayout>