mainactivity如下:
[java] view
plaincopy
package cc.testradiogroup;
import android.os.bundle;
import android.widget.radiobutton;
import android.widget.radiogroup;
import android.widget.radiogroup.oncheckedchangelistener;
import android.app.activity;
/**
* demo描述:
* 利用自定义radiogroup实现单选
*
* 参考资料:
* 1 http://blog.csdn.net/xiaanming
* 2 http://bbs.51cto.com/thread-954128-1.html
*
* thank you very much
*/
public class mainactivity extends activity {
private radiogroup mradiogroup;
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.main);
init();
}
private void init(){
mradiogroup=(radiogroup) findviewbyid(r.id.radiogroup);
mradiogroup.setoncheckedchangelistener(new radiobuttononcheckedchangelistenerimpl());
// 监听单选的变化
private class radiobuttononcheckedchangelistenerimpl implements oncheckedchangelistener {
@override
public void oncheckedchanged(radiogroup group, int checkedid) {
radiobutton rb = (radiobutton) findviewbyid(group.getcheckedradiobuttonid());
string currentselected = rb.gettext().tostring();
system.out.println("现在选中是:" + currentselected);
}
}
main.xml如下:
[html] view
<?xml version="1.0" encoding="utf-8"?>
<!-- 步骤如下: -->
<!--1: android:button="@null" 去掉自带的图标 -->
<!--2：android:drawableright="@drawable/line" 在文字的右边设置图片-->
<!--3: android:drawablepadding="10dip" 图片与文字间的距离-->
<!--4：android:layout_marginleft="-17dip" 每个radiobutton距离左边缘或者距其左radiobutton的距离-->
<linearlayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
android:gravity="center_horizontal" >
<textview
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textsize="15sp"
android:text="测试自定义的radiogroup来实现单选功能" >
</textview>
<radiogroup
android:id="@+id/radiogroup"
android:orientation="horizontal"
android:background="@drawable/bg" >
<radiobutton
android:id="@+id/cai"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginleft="-17dip"
android:checked="true"
android:button="@null"
android:drawableright="@drawable/line"
android:drawablepadding="10dip"
android:text="菜"
android:textcolor="@drawable/text_selector" >
</radiobutton>
android:id="@+id/tang"
android:layout_marginleft="-15dip"
android:text="汤"
android:textcolor="@drawable/text_selector">
android:id="@+id/zhushi"
android:text="主 食"
android:id="@+id/zhou"
android:drawablepadding="15dip"
android:text="粥"
</radiogroup>
</linearlayout>
text_selector.xml如下:
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
<item android:color="#ffffff" android:state_checked="true"/>
<item android:color="#000000"/>
</selector>