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Place view on top and between two views

Trying to figure out to overcome this little problem.

Below, on the left side, is a sample of the view that I'm trying to implement for an app. On the right side is the view that I'm ending up with. 容器

In my xml mock up I've decided to use a RelativeLayout but I can't get the TextView to be centered between the top and bottom views.

For reference here's a represenation of my xml code:

 <RelativeLayout 
    android:layout_width:"match_parent"
    android:layout_height:"wrap_content">
    <ImageView
        android:id="@+id/BlackImage"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scaleType="centerCrop"
        android:layout_alightParentTop="true"
        android:layout_centerHorizontal="true"/>
    <ImageView
        android:id="@+id/RedImage"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:scaleType="centerCrop"
        android:layout_below="@+id/BlackImage"
        android:layout_centerHorizontal="true"/>
    <TextView
        android:id="@+id/TextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/BlackImage"
        android:layout_centerHorizontal="true"/>
 </RelativeLayout>

Any idea what I'm missing, or how to change to get what I want?

try below link hope it will help you :-

TextView above Image view in a layout

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 <?xml version="1.0" encoding="utf-8"?> 
        <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical" android:background="@drawable/tmp" >


        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:src="@drawable/uph" 
             android:layout_marginTop="-10dp"/>

        <RelativeLayout  android:layout_width="match_parent"
            android:layout_height="wrap_content" 
            android:layout_gravity="top|center">

            <ImageView
                android:id="@+id/imageView2"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:src="@drawable/propfile" 
            />

           <TextView  android:layout_width="wrap_content"
               android:layout_height="wrap_content" 
               android:text="text" 
               android:layout_centerInParent="true"
           /> 
      </RelativeLayout>   
    </LinearLayout>

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