截图：
布局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="https://schemas.android.com/apk/res/android"
xmlns:tools="https://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<include
android:id="@+id/ic"
layout="@layout/include_title"
android:layout_width="match_parent"
android:layout_height="48dp" />
<RadioGroup
android:id="@+id/rg"
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_alignParentBottom="true"
android:background="@color/dhlqianhui"
android:gravity="center_vertical"
android:orientation="horizontal">
<RadioButton
android:id="@+id/rb_home"
style="@style/Custom.TabRadioButton"
android:drawableTop="@drawable/tab_sign_selector" />
<RadioButton
android:id="@+id/rb_mall"
style="@style/Custom.TabRadioButton"
android:drawableTop="@drawable/tab_record_selector" />
<View style="@style/Custom.TabRadioButton" />
<RadioButton
android:id="@+id/rb_video"
style="@style/Custom.TabRadioButton"
android:drawableTop="@drawable/tab_contact_selector" />
<RadioButton
android:id="@+id/rb_my"
style="@style/Custom.TabRadioButton"
android:drawableTop="@drawable/tab_setting_selector" />
</RadioGroup>
<LinearLayout
android:id="@+id/ll_sign"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:orientation="vertical"
android:padding="5dp">
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/transparent"
android:src="@drawable/ic_publish" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="宣布" />
</LinearLayout>
<FrameLayout
android:id="@+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="@id/rg"
android:layout_below="@id/ic" />
</RelativeLayout><?xml version="1.0" encoding="utf-8"?
