一、代码
1.xml
(1)radio.xml
<?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:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello"
/>
<RadioGroup
android:id="@+id/genderGroup"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
>
<RadioButton
android:id="@+id/femaleButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/female"
/>
<RadioButton
android:id="@+id/maleButton"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/male"
/>
</RadioGroup>
<CheckBox
android:id="@+id/swim"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/swim"
/>
<CheckBox
android:id="@+id/run"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/run"
/>
<CheckBox
android:id="@+id/read"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/read"
/>
</LinearLayout>
2.java
(1)RadioTest.java
package mars.activity07; import android.app.Activity;
import android.os.Bundle;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast; public class RadioTest extends Activity {
/** Called when the activity is first created. */
//对控件对象进行声明
private RadioGroup genderGroup = null;
private RadioButton femaleButton = null;
private RadioButton maleButton = null;
private CheckBox swimBox = null;
private CheckBox runBox = null;
private CheckBox readBox = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.radio);
//通过控件的ID来得到代表控件的对象
genderGroup = (RadioGroup)findViewById(R.id.genderGroup);
femaleButton = (RadioButton)findViewById(R.id.femaleButton);
maleButton = (RadioButton)findViewById(R.id.maleButton);
swimBox = (CheckBox)findViewById(R.id.swim);
runBox = (CheckBox)findViewById(R.id.run);
readBox = (CheckBox)findViewById(R.id.read);
//为RadioGroup设置监听器，需要注意的是，这里的监听器和Button控件的监听器有所不同
genderGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() { @Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
// TODO Auto-generated method stub
if(femaleButton.getId() == checkedId){
System.out.println("famale");
Toast.makeText(RadioTest.this, "famle", Toast.LENGTH_SHORT).show();
}
else if(maleButton.getId() == checkedId)
{
System.out.println("male");
}
}
}); //为多选按钮添加监听器
swimBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
System.out.println("swim is checked");
}
else
{
System.out.println("swim is unchecked");
}
}
});
runBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
System.out.println("run is checked");
}
else
{
System.out.println("run is unchecked");
}
}
});
readBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { @Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
if(isChecked)
{
System.out.println("read is checked");
}
else
{
System.out.println("read is unchecked");
}
}
});
} }
官方文档设置监听都是在xml中设定android:onClick="onCheckboxClicked"/>，然后在java文件中编写onCheckboxClicked方法用switch判断选择状态
<?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">
<CheckBox android:id="@+id/checkbox_meat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/meat"
android:onClick="onCheckboxClicked"/>
<CheckBox android:id="@+id/checkbox_cheese"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/cheese"
android:onClick="onCheckboxClicked"/>
</LinearLayout>
public void onCheckboxClicked(View view) {
// Is the view now checked?
boolean checked = ((CheckBox) view).isChecked();
// Check which checkbox was clicked
switch(view.getId()) {
case R.id.checkbox_meat:
if (checked)
// Put some meat on the sandwich
else
// Remove the meat
break;
case R.id.checkbox_cheese:
if (checked)
// Cheese me
else
// I'm lactose intolerant
break;
// TODO: Veggie sandwich
}
}