布局：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.example.day03_radiobutton.MainActivity" > <TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="性别" /> <RadioGroup
android:id="@+id/group_sex"
android:layout_width="wrap_content"
android:layout_height="wrap_content" > <RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="男" /> <RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="女" />
</RadioGroup> <TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="爱好" /> <RadioGroup
android:id="@+id/group_favor"
android:layout_width="wrap_content"
android:layout_height="wrap_content" > <RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="网球" /> <RadioButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="篮球"/> <RadioButton
android:id="@+id/button_fight"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="足球" />
</RadioGroup> <Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="确认" /> </LinearLayout>
代码：
public class MainActivity extends Activity {
private RadioGroup group_sex, group_favor;
private RadioButton button_fight;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
group_sex = (RadioGroup) findViewById(R.id.group_sex);
group_favor = (RadioGroup) findViewById(R.id.group_favor);
button_fight = (RadioButton) findViewById(R.id.button_fight);
button_fight.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if(isChecked) {
Toast.makeText(MainActivity.this,
"你……确定？",
Toast.LENGTH_LONG).show();
}
}
});
button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
String str = "";
// 读取radioGroup的状态
// 提取radioGroup的子控件
for(int i = 0; i < group_sex.getChildCount(); i++) {
RadioButton button = (RadioButton) group_sex.getChildAt(i);
if(button.isChecked()) {
str += "性别:" + button.getText() + "\n";
break;
}
}
for(int i = 0; i < group_favor.getChildCount(); i++) {
RadioButton button = (RadioButton) group_favor.getChildAt(i);
if(button.isChecked()) {
str += "爱好：" + button.getText();
break;
}
}
Toast.makeText(MainActivity.this, str, Toast.LENGTH_LONG).show();
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}