[Android] setOnClickListener(this)를 이용한 버튼 클릭 이벤트

 

 

 

[Android] ViewBinding 기법

 

 

 

<?xml version="1.0" encoding="utf-8"?>
<GridLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="horizontal"
    android:columnCount="3">

<Button
    android:id="@+id/btn_one"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_row="0"
    android:layout_column="0"
    android:layout_margin="2dp"
    android:text="Button1" />

<Button
    android:id="@+id/btn_two"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_row="0"
    android:layout_column="1"
    android:layout_margin="2dp"
    android:text="Button2" />

<Button
    android:id="@+id/btn_three"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_row="0"
    android:layout_column="2"
    android:layout_margin="2dp"
    android:text="Button3" />

</GridLayout>

 

 

 

안드로이드 Activity의 버튼 이벤트 정리를 위해 사용

 

package org.example.cleanbutton;

import android.os.Bundle;
import android.view.View;
import android.widget.Toast;

import androidx.appcompat.app.AppCompatActivity;

import org.example.cleanbutton.databinding.ActivityMainBinding;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        // 뷰 바인딩 객체 획득
        ActivityMainBinding binding = ActivityMainBinding.inflate(getLayoutInflater());
        setContentView(binding.getRoot());

        // OnClickListener interface를 implements하여 메서드 구현
        binding.btnOne.setOnClickListener(this);
        binding.btnTwo.setOnClickListener(this);
        binding.btnThree.setOnClickListener(this);
    }

    // View.OnClickListener를 implements하므로 onClick() 함수를 오버라이딩
    @Override
    public void onClick(View view) {

        switch(view.getId()) {
            case R.id.btn_one :
                Toast.makeText(getApplicationContext(), "버튼01 클릭했습니다.", Toast.LENGTH_SHORT).show();
                break;
            case R.id.btn_two :
                Toast.makeText(getApplicationContext(), "버튼02 클릭했습니다.", Toast.LENGTH_SHORT).show();
                break;
            case R.id.btn_three :
                Toast.makeText(getApplicationContext(), "버튼03 클릭했습니다.", Toast.LENGTH_SHORT).show();
                break;
            default:
                break;
        }
    }
}