How to show a button half on one layout and half on another layout in android?

Question

I want to design a layout like the image below:

I tried to do it using Relative layout but I did not come up with a solution. It should be in the same position for all device screen. How can I achieve it??? I tried this code:

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

    <RelativeLayout
        android:id="@+id/relative_layout_top"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/obaz" >

    </RelativeLayout>

    <RelativeLayout
        android:id="@+id/relative_layout_bottom"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/relative_layout_top"
        android:background="@drawable/obaz2" >

        <Button
            android:id="@+id/bt_atoz"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_alignParentTop="true"
            android:layout_marginTop="-20dp"

            android:background="@drawable/button_active" />

    </RelativeLayout>

</RelativeLayout>

Any suggestion will be appreciated.

Answer 1

You can put the Button declaration outside of your RelativeLayout relative_layout_bottom and then place it where you like.

For example: Edit:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <RelativeLayout
        android:id="@+id/relative_layout_top"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/obaz" >
    </RelativeLayout>

    <Button
        android:id="@+id/bt_atoz"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_centerVertical="true"
        android:background="@drawable/button_active" />

    <RelativeLayout
        android:id="@+id/relative_layout_bottom"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@+id/relative_layout_top"
        android:background="@drawable/obaz2" >
    </RelativeLayout>

</RelativeLayout>