RadioGroup实现点击的RadioButton项变色

drawable下新建selector类型的文件
xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_checked="true" android:drawable="@color/colorSelect"/>//选中时颜色
    <item android:state_checked="false" android:drawable="@color/colorNoSelect"/>//未选中时颜色
    <item android:drawable="@color/colorNoSelect"/>//默认颜色

selector>

//布局中RadioGroup代码,,,

在每个RadioButton中引用,刚才写的文件,android:background="@drawable/radio_selector"

//给默认展示页面的对应的RadioButton中设置默认选中,android:cheched="true"

<RadioGroup
    android:id="@+id/radiogroup"
    android:orientation="horizontal"
    android:layout_width="match_parent"
    android:layout_alignParentBottom="true"
    android:layout_height="40dp">
    <RadioButton
        android:id="@+id/home_button"
        android:background="@drawable/radio_selector"
        android:gravity="center"
        android:layout_width="0dp"
        android:button="@null"
        android:layout_weight="1"
        android:layout_height="match_parent"
        android:text="首页"/>
    <RadioButton
        android:id="@+id/zixuan_button"
        android:background="@drawable/radio_selector"
        android:gravity="center"
        android:layout_width="0dp"
        android:button="@null"
        android:layout_weight="1"
        android:layout_height="match_parent"
        android:text="自选"/>
    <RadioButton
        android:id="@+id/hangqing_button"
        android:background="@drawable/radio_selector"
        android:gravity="center"
        android:layout_width="0dp"
        android:button="@null"
        android:layout_weight="1"
        android:layout_height="match_parent"
        android:text="行情"/>
    <RadioButton
        android:id="@+id/zixun_button"
        android:background="@drawable/radio_selector"
        android:checked="true"
        android:gravity="center"
        android:layout_width="0dp"
        android:button="@null"
        android:layout_weight="1"
        android:layout_height="match_parent"
        android:text="资讯"/>
    <RadioButton
        android:id="@+id/jiaoyi"
        android:background="@drawable/radio_selector"
        android:gravity="center"
        android:layout_width="0dp"
        android:button="@null"
        android:layout_weight="1"
        android:layout_height="match_parent"
        android:text="交易"/>
RadioGroup>