Android控件開發之CheckBox

CheckBox，也就是多項選擇。Android中提供了ChechBox控件，使用起來非常方便。

CheckBox效果

main.xml源碼

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView     
    android:layout_width="fill_parent"    
    android:layout_height="wrap_content"    
    android:text="@string/text"/>  
     
<CheckBox   
    android:id="@+id/check1"  
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="蘋果 ios"  />   
    
<CheckBox   
    android:id="@+id/check2"  
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="谷歌 Android"  />   
    
<CheckBox   
    android:id="@+id/check3"  
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="RIM BlackBerry"  />  
 
<CheckBox   
    android:id="@+id/check4"  
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="微軟 Windows phone 7"  />  
     
<CheckBox   
    android:id="@+id/check5"  
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="諾基亞 symbian"  />  
     
<Button   
    android:id="@+id/mybutton"  
    android:layout_width="fill_parent"  
    android:layout_height="wrap_content"  
    android:text="確定"  />   

</LinearLayout>

CheckBox 事件響應setOnCheckedChangeListener

本程序java源碼

import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;

public class CheckBoxActivity extends Activity 
{
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.main);
                
	final CheckBox check1 = (CheckBox)findViewById(R.id.check1);
	final CheckBox check2 = (CheckBox)findViewById(R.id.check2);
	final CheckBox check3 = (CheckBox)findViewById(R.id.check3);
	final CheckBox check4 = (CheckBox)findViewById(R.id.check4);
	final CheckBox check5 = (CheckBox)findViewById(R.id.check5);
        
      	//創建CheckBox事件監聽器
          check1.setOnCheckedChangeListener(listener);
         check2.setOnCheckedChangeListener(listener);
         check3.setOnCheckedChangeListener(listener);
         check4.setOnCheckedChangeListener(listener);
         check5.setOnCheckedChangeListener(listener);
        
    }
     
    private OnCheckedChangeListener listener = new OnCheckedChangeListener()
    {
	@Override
	public void onCheckedChanged(CompoundButton buttonView,boolean isChecked)
	{
		switch(buttonView.getId())
		{
		case R.id.check1:
			if(isChecked)
				Toast.makeText(getApplicationContext(), "你喜歡蘋果 ios智能手機系統", Toast.LENGTH_LONG).show();
			break;
		case R.id.check2:
			if(isChecked)
				Toast.makeText(getApplicationContext(), "你喜歡谷歌 Android智能手機系統", Toast.LENGTH_LONG).show();
			break;
		case R.id.check3:
			if(isChecked)
				Toast.makeText(getApplicationContext(), "你喜歡RIM BlackBerry智能手機系統",Toast.LENGTH_LONG).show();
			break;
		case R.id.check4:
			if(isChecked)
				Toast.makeText(getApplicationContext(), "你喜歡微軟 Windows phone 7智能手機系統", Toast.LENGTH_LONG).show();
			break;
		case R.id.check5:
			if(isChecked)
				Toast.makeText(getApplicationContext(), "你喜歡諾基亞 symbian智能手機系統", Toast.LENGTH_LONG).show();
			break;
			}
		}		     
    };