how to make imageView take match parent of relativelayout

Question

i'm trying to make ImageView take match_parent of RelativeLayout like this picture :

when i run my app ImageView looks like that :

this my xml :

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/linealL"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/khdar">
    <RelativeLayout
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:layout_margin="10dp"
        android:id="@+id/RelativeLayout02"
        android:layout_width="wrap_content"
        android:background="@color/colorGriviewBorder"
        android:layout_height="wrap_content" >
        <LinearLayout
            android:layout_margin="5dp"
            android:id="@+id/LinearLayout01"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@drawable/gradient"
            android:orientation="vertical" >
            <TextView
                android:text="GIF"
                android:textSize="16sp"
                android:layout_gravity="center"
                android:textColor="@color/colorGriviewBorder"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:id="@+id/dev"/>
        </LinearLayout>
        <ImageView
            android:padding="8dp"
            android:layout_below="@+id/LinearLayout01"
            android:contentDescription="@string/app_name"
            android:id="@+id/imageSelectTo"
            android:scaleType="fitXY"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:layout_height="wrap_content"
            android:layout_width="wrap_content"/>
    </RelativeLayout>
</RelativeLayout>

Answer 1

Change layout_width of ImageView to match_parent and add one new attribute to it: android:adjustViewBounds="true".