0112常用控件+RadioGroup+CheckBox+提示语用法TOAST

<RadioGroup>单选按钮的组

要确定哪些单选按钮<RadioButton>在同一个组中

对单选按钮绑定的是RadioGroup而不是RadioButton

输入new RadioGroup后自动生成匿名内部类

genderGroup.setOnCheckedChangeListener(new

RadioGroup.OnCheckedChangeListener() {

                           

                            @Override

                            public void onCheckedChanged(RadioGroup group,

int checkedId) {

                                     // TODO Auto-generated method stub

                                     //1哪一组里面的控件被点击了将会传进去

                                     //2组里的哪一个RadioButton被点击了传进去，

即用户所点击的id

                                     if(femaleButton.getId()==checkedId)

                                     {System.out.println("female");}

                                     else if (maleButton.getId()==checkedId)

                                     {System.out.println("male");}

                                    

                                              

                                    

                            }

                   });

<Checkbox>的使用

不存在组的概念

提示语用法TOAST

Toast.makeText(RadioTest.this, "你已经选择了female", Toast.LENGTH_LONG).show();

 RadioTest.java

package com.example.mars_activity07;

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


public class RadioTest extends Activity {

    private RadioGroup genderGroup;
    private RadioButton femaleButton;
    private RadioButton maleButton;
    private CheckBox swim;
    private CheckBox run;
    private CheckBox read;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.radio);
        genderGroup=(RadioGroup)findViewById(R.id.genderGroup);
        femaleButton=(RadioButton)findViewById(R.id.femaleButton);
        maleButton=(RadioButton)findViewById(R.id.maleButton);
        swim=(CheckBox)findViewById(R.id.swim);
        run=(CheckBox)findViewById(R.id.run);
        read=(CheckBox)findViewById(R.id.read);
        //绑定监听器，这里需要绑定的是RadioGroup
        //匿名内部类
        //查阅api知道OncheckedChangeListener是RG一个接口
        genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(RadioGroup group, int checkedId) {
                // TODO Auto-generated method stub
                //1哪一组里面的控件被点击了将会传进去
                //2组里的哪一个RadioButton被点击了传进去，即用户所点击的id
                if(femaleButton.getId()==checkedId)
                {System.out.println("female");
                Toast.makeText(RadioTest.this, "你已经选择了female", Toast.LENGTH_LONG).show();
                }
                else if (maleButton.getId()==checkedId)
                {System.out.println("male");}
                
                    
                
            }
        });
        //为多选按钮添加监听器，与Radio是对一组绑定，而这个需要对每一个按钮绑定，他们的绑定方式与之前的button也不同
        swim.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub
                
                if(isChecked)
                {
                    System.out.println("swim");
                }
                
            }
        });
        
        run.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub
                if(isChecked)
                {
                    System.out.println("run");
                }
                
            }
        });
        
        read.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub
                if(isChecked)
                {
                    System.out.println("read");
                }
                
            }
        });
        
    
    
        
        
        

    
     
    }

    
    
}

radio.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="match_parent"
    android:orientation="vertical" >
    <RadioGroup
        android:id="@+id/genderGroup"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:orientation="vertical">
        <RadioButton
            android:id="@+id/femaleButton"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:text="@string/female"/>
        <RadioButton
            android:id="@+id/maleButton"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:text="@string/male"/>
        <RadioButton
            android:id="@+id/uncertainButton"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"
            android:text="@string/uncertain"/>
        
        "
    </RadioGroup> 
    
    
    <CheckBox 
        android:id="@+id/swim"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:text="@string/swim"
        />
    
    
     <CheckBox 
        android:id="@+id/run"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:text="@string/run"
        />
    
     <CheckBox 
        android:id="@+id/read"
        android:layout_height="wrap_content"
        android:layout_width="wrap_content"
        android:text="@string/read"
        />
    
</LinearLayout>