[Android]--RadioGroup+RadioButton实现底部导航栏

RadioGroup+RadioButton组合方式打造简单实用的底部导航栏

代码块：

<?xml version="1.0" encoding="utf-8"?>
    <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"
    tools:context=".MainActivity">
    <FrameLayout
        android:id="@+id/fl_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/rg_content">

    </FrameLayout>

    <RadioGroup
        android:paddingTop="@dimen/dp_10"
        android:id="@+id/rg_content"
        android:layout_width="match_parent"
        android:layout_height="@dimen/dp_60"
        android:layout_alignParentBottom="true"
        android:background="@color/white"
        android:orientation="horizontal">

        <RadioButton
            android:textColor="@drawable/tv_color_selected"
            android:textSize="@dimen/dp_12"
            android:text="首页"
            android:button="@null"
            android:gravity="center_horizontal"
            android:drawableTop="@drawable/ic_home_selected"
            android:id="@+id/rb_home"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"/>

        <RadioButton
            android:gravity="center_horizontal"
            android:textColor="@drawable/tv_color_selected"
            android:textSize="@dimen/dp_12"
            android:text="产品"
            android:button="@null"
            android:drawableTop="@drawable/ic_loan_selected"
            android:id="@+id/rb_money"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"/>

        <RadioButton
            android:gravity="center_horizontal"
            android:textColor="@drawable/tv_color_selected"
            android:textSize="@dimen/dp_12"
            android:text="个人"
            android:button="@null"
            android:drawableTop="@drawable/ic_me_selected"
            android:id="@+id/rb_mine"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_weight="1"/>
    </RadioGroup>

    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_above="@+id/rg_content"
        android:layout_alignParentBottom="true"
        android:layout_marginBottom="@dimen/dp_60"
        android:background="@color/line_background"></View>
</RelativeLayout>

效果图片：