RadioGroup radioGroup = (RadioGroup)findViewById(R.id.myRadioGroup);
2、獲取RadioButton控件方法
RadioButton radioButton = (RadioButton)findViewById(radioGroup.getCheckedRadioButtonId());
3、獲取選中的radio的值方法
String text = radioButton.getText().toString();
4、爲radioGroup添加監聽事件,用來監聽組件內部的事件響應
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId) {
//在這個函數裏面用來改變選擇的radioButton的數值,以及與其值相關的
selectRadioBtn();
}
});
5、例子
佈局文件activity_main.xml
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.a_studentgrade.MainActivity" >
<TextView
android:id="@+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="姓名 :" />
<EditText
android:id="@+id/et_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/tv_name"
android:hint="請輸入你的姓名"
/>
<TextView
android:id="@+id/tv_sex"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tv_name"
android:layout_marginTop="20dp"
android:text="性別 :" />
<RadioGroup
android:id="@+id/rg_sex"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/tv_sex"
android:layout_below="@id/et_name"
>
<RadioButton
android:id="@+id/rb_male"
android:text="男"
/>
<RadioButton
android:id="@+id/rb_female"
android:text="女"
/>
</RadioGroup>
<TextView
android:id="@+id/tv_age"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_marginTop="25dp"
android:layout_below="@id/rg_sex"
android:text="年齡"
/>
<EditText
android:id="@+id/et_age"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@id/tv_age"
android:layout_below="@id/rg_sex"
android:layout_marginTop="10dp"
android:hint="請輸入你的年齡"
/>
<Button
android:id="@+id/btn"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:layout_below="@id/tv_age"
android:layout_marginTop="25dp"
android:text="Look"
android:onClick="Look"
/>
</RelativeLayout>
MainActivity.java 文件
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Toast;
public class MainActivity extends Activity
{
EditText et_name;
EditText et_age;
RadioGroup rg_sex;
RadioButton rb_sex;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void Look(View v)
{
et_name = (EditText) findViewById(R.id.et_name);
rg_sex = (RadioGroup) findViewById(R.id.rg_sex);
rb_sex = (RadioButton) findViewById(rg_sex.getCheckedRadioButtonId());
et_age = (EditText) findViewById(R.id.et_age);
String name = et_name.getText().toString();
String sex = rb_sex.getText().toString();
int age = Integer.parseInt(et_age.getText().toString());
Intent intent = new Intent(this, LookActivity.class);
intent.putExtra("name", name);
intent.putExtra("sex", sex);
intent.putExtra("age", age);
startActivity(intent);
}
}
部分轉自:http://blog.sina.com.cn/s/blog_9c5364110101c1bj.html