【最后结果显示在一个界面中，但是分开理解】
1、单选按钮（RadioGroup：是单选按钮组和RadioButton）
1）在activity_main.xml中
<LinearLayout ------------------->控件是线性布局 xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <RadioGroup ------------------------>单选按钮组 android:id="@+id/genderGroup" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical"> ---------------------->组的方向是垂直方向 <RadioButton ------------------->组中的第一个按钮 android:id="@+id/femaleButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/female" /> <RadioButton ------------------->组中的第二个按钮 android:id="@+id/maleButton" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/male" /> </RadioGroup> </LinearLayout>
2）在strings.xml
<?xml version="1.0" encoding="utf-8" ?> <resources> <string name="hello">Hello World, Activity07!</string> <string name="app_name">activity07</string> <string name="male">男人</string> </resources>
3）[代码]MainActivity.java代码：
public class MainActivity 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;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main); //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){ ------------------->如果满足if条件，那么利用Toast类来显示内容为famle的小界面
System.out.println("famale"); ------------------->为了更方便显示执行过程，写入了System.out.println() Toast.makeText(MainActivity.this, "famle", Toast.LENGTH_SHORT).show(); ----------->show()方法是让它实现界面显示
}
else if(maleButton.getId() == checkedId)
{
System.out.println("male");
}
}
});
}
}【区别Button中的监听方法，其下只是区别的部分代码，是为了方便做出对比】
[代码]java代码：
public class MainActivity extends Activity {
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button=(Button)findViewById(R.id.calculate);
//为按钮对象设置显示值
button.setText("结果");
button.setOnClickListener(new CaculateListener());
}
//编写监听器，是的按下按钮后就给与响应
class CaculateListener implements View.OnClickListener {
@Override
public void onClick(View v) {
//要使按钮点击后做出什么反应，都在此方法中设置
}
}
}2、CheckBox：多选按钮【注意：其不存在组的概念】
1）activity_main.xml
<?xml version="1.0" encoding="utf-8" ?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical"> <TextView android:id="@+id/textView1" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <CheckBox ---------------------------->多选按钮的布局 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）strings.xml
<?xml version="1.0" encoding="utf-8" ?> <resources> <string name="hello">Hello World, Activity07!</string> <string name="app_name">activity07</string> <string name="swim">swim</string> <string name="run">run</string> <string name="read">read</string> </resources
3)[代码]MainActivity.java代码：[仅仅是多选按钮的代码】
//为多选按钮添加监听器【为多选按钮中的为一个按钮都要设置监听器】 【下篇日记着重介绍CompoundButton类 】swimBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() { ----------- >CheckBox继承了CompoundButton类
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { ---------->区别单选按钮的监听方法的参数
// TODO Auto-generated method stub
if(isChecked) ----------------->若传入的isChecked是真，则就选中该组中的按钮
{ ----------------->若传入的isChecked是假，则就未选中该组中的按钮
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");
}
}
});原文链接：http://www.apkbus.com/blog-792467-60665.html