버튼 클릭 이벤트

[res-values-string.xml]

<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="app_name">BtnStudy</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string name="btn">이게바로 버튼</string>
    <string name="tv">여기가 텍스트뷰</string>
 
</resources>
 

[res-layout-xml]

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.hoitstudy.btn.BtnClick" >
 
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn" />
    
    <TextView
        android:id="@+id/tv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv" />
        
 
</LinearLayout>

첫 번째 이벤트 처리방법

[src-com.hoitstudy.btn-BtnClick.java]

package com.hoitstudy.btn;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.example.btnstudy.R;
 
public class BtnClick extends Activity 
{
    Button btn;
    TextView tv;
    int i = 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = (Button)findViewById(R.id.btn);
        tv = (TextView)findViewById(R.id.tv);
        btn.setOnClickListener(btnClick);
    }
 
    private OnClickListener btnClick = new OnClickListener() 
    {
        
        @Override
        public void onClick(View v) 
        {
            i++;
            tv.setText("버튼"+i+"번 눌렀다");
        }
    };
}
 

두 번째 이벤트 처리방법

[src-com.hoitstudy.btn-BtnClick.java]

 
package com.hoitstudy.btn;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.example.btnstudy.R;
 
public class BtnClick extends Activity 
{
    Button btn;
    TextView tv;
    int i = 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn = (Button)findViewById(R.id.btn);
        tv = (TextView)findViewById(R.id.tv);
        btn.setOnClickListener(new OnClickListener() 
        {
            
            @Override
            public void onClick(View v) 
            {
                i++;
                tv.setText("버튼"+i+"번 눌렀다");
                
            }
        });
    }
}
 

세 번째 이벤트 처리방법

[res-values-string.xml]

<?xml version="1.0" encoding="utf-8"?>
<resources>
 
    <string name="app_name">BtnStudy</string>
    <string name="hello_world">Hello world!</string>
    <string name="action_settings">Settings</string>
    <string name="btn1">첫번째 버튼입니다</string>
    <string name="btn2">두번째 버튼입니다</string>
    <string name="tv1">여기가 첫번째 텍스트뷰</string>
    <string name="tv2">여기가 두번째 텍스트뷰</string>
 
</resources>
 

[res-layout-xml]

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.hoitstudy.btn.BtnClick" >
 
    <Button
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn1" />
    <Button
        android:id="@+id/btn2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/btn2" />
        
    
    <TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv1" />
    <TextView
        android:id="@+id/tv2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/tv2" />
        
 
</LinearLayout>

>[src-com.hoitstudy.btn-BtnClick.java]

package com.hoitstudy.btn;
 
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
 
import com.example.btnstudy.R;
 
public class BtnClick extends Activity 
{
    Button btn1, btn2;
    TextView tv1, tv2;
    int i,j = 0;
    @Override
    protected void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        findViewById(R.id.btn1).setOnClickListener(mClickListener);
        findViewById(R.id.btn2).setOnClickListener(mClickListener);
        tv1 = (TextView)findViewById(R.id.tv1);
        tv2 = (TextView)findViewById(R.id.tv2);
    }
 
    Button.OnClickListener mClickListener = new OnClickListener() 
    {
 
        @Override
        public void onClick(View v) 
        {
            switch(v.getId())
            {
            case R.id.btn1:
                i++;
                tv1.setText("첫번째 버튼이 "+i+"번 눌렸습니다");
                break;
            case R.id.btn2:
                j++;
                tv2.setText("두번째 버튼이 "+j+"번 눌렸습니다");
                break;
            }
 
        }
    };
}

작성중..........