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Android 小項目之--猜名字有獎!RadionButton 和RadionGroup應用(附源碼)

2010-05-28 14:21 by Terry_龙, ... 阅读, ... 评论, 收藏, 编辑

  有想過友Android的小屏幕上把asp.net 的RadionButtonList搬進來用嗎?答案是肯定的,Android 的Tool工具提供了一個RadioGroup控件,可將各大自不同的RadioButton設限于同一個Radio按鈕組,這樣子就可以做到單選的效果了,那要怎么樣用呢?先看截圖:

我們要做的事是:當用戶猜題或者選擇一個特定某個選項時,我們將在後臺判斷用戶是否選中,如果選中者相應的做出處理,具體處理看各自項目的需求,代碼片段一:

 

代码
mButton.setOnClickListener(new OnClickListener() {
            
            @Override
            
public void onClick(View v) {
                
// TODO Auto-generated method stub
                if(mRadioButton1.isChecked())
                {
                    mRadioButton1.setChecked(
false);
                }
                
if(mRadioButton2.isChecked())
                {
                    mRadioButton2.setChecked(
false);
                }
                
if(mRadioButton3.isChecked())
                {
                    mRadioButton3.setChecked(
false);
                }
                
if(mRadioButton4.isChecked())
                {
                    mRadioButton4.setChecked(
false);
                }
                
            }
        });

 

 

按鈕事件,重置選中按鈕為未選中狀態。

代碼片段二:

 

代码
 list=new OnCheckedChangeListener() {
            
            @Override
            
public void onCheckedChanged(RadioGroup group, int checkedId) {
                
// TODO Auto-generated method stub
                RadioButton btn=(RadioButton)findViewById(checkedId);
                
if(btn.isChecked())
                {
                     
switch (checkedId) {
                        
case R.id.RadioButton01:
                            
                        
                                Show(
"回答錯誤!");
                            
                            
break;
                        
case R.id.RadioButton02:
                            
                                Show(
"回答錯誤!");
                            
                            
break;
                        
case R.id.RadioButton03:
                            
                                Show(
"回答正確,獎勵你100分");
                            
                            
break;
                        
case R.id.RadioButton04:
                             
                                Show(
"回答錯誤!");
                             
                            
break;
                             
                        }           
                }
            
            }
        };
        
         mGroup.setOnCheckedChangeListener(list);
    }

 

 

步驟分析:一,通過checkid判斷用戶選中哪一個按鈕再判斷,如果狀態為ischeck()則做出相應處理

二,通過checkid做出彈出處理效果

完整代碼如下:

 

代码
package cn.terry;

import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.*
import android.widget.RadioGroup.OnCheckedChangeListener;
public class TestRadioButton extends Activity {
    
private RadioGroup mGroup;
    
private Button mButton;
    
private RadioButton mRadioButton1;
    
private RadioButton mRadioButton2;
    
private RadioButton mRadioButton3;
    
private RadioButton mRadioButton4; 
    
private OnCheckedChangeListener list;
    
    
/** Called when the activity is first created. */
    @Override
    
public void onCreate(Bundle savedInstanceState) {
        
super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mGroup
=(RadioGroup)findViewById(R.id.group);
        mButton
=(Button)findViewById(R.id.Button1);
        mRadioButton1
=(RadioButton)findViewById(R.id.RadioButton01);
        mRadioButton2
=(RadioButton)findViewById(R.id.RadioButton02);
        mRadioButton3
=(RadioButton)findViewById(R.id.RadioButton03);
        mRadioButton4
=(RadioButton)findViewById(R.id.RadioButton04);
       
        mButton.setOnClickListener(
new OnClickListener() {
            
            @Override
            
public void onClick(View v) {
                
// TODO Auto-generated method stub
                if(mRadioButton1.isChecked())
                {
                    mRadioButton1.setChecked(
false);
                }
                
if(mRadioButton2.isChecked())
                {
                    mRadioButton2.setChecked(
false);
                }
                
if(mRadioButton3.isChecked())
                {
                    mRadioButton3.setChecked(
false);
                }
                
if(mRadioButton4.isChecked())
                {
                    mRadioButton4.setChecked(
false);
                }
                
            }
        });
       
        list
=new OnCheckedChangeListener() {
            
            @Override
            
public void onCheckedChanged(RadioGroup group, int checkedId) {
                
// TODO Auto-generated method stub
                RadioButton btn=(RadioButton)findViewById(checkedId);
                
if(btn.isChecked())
                {
                     
switch (checkedId) {
                        
case R.id.RadioButton01:
                            
                        
                                Show(
"回答錯誤!");
                            
                            
break;
                        
case R.id.RadioButton02:
                            
                                Show(
"回答錯誤!");
                            
                            
break;
                        
case R.id.RadioButton03:
                            
                                Show(
"回答正確,獎勵你100分");
                            
                            
break;
                        
case R.id.RadioButton04:
                             
                                Show(
"回答錯誤!");
                             
                            
break;
                             
                        }           
                }
            
            }
        };
        
         mGroup.setOnCheckedChangeListener(list);
    }
    
    
public void Show(String msg)
    {
        
new AlertDialog.Builder(TestRadioButton.this)
        .setTitle(
"提示")
        .setMessage(msg)
        .setPositiveButton(
"確定"null).create().show();
    }
    
    
    
    
    
    
}

 

源碼下載:/Files/TerryBlog/TestRadioButton.rar

 

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