How to add overlay view over other view in android?

Question

I want to put button above image view.

How can i do this?

(Please, don't offer to set Background, cause i need ImageView)

Answer 1

Set as background!

Just kidding... what you need is put your views inside a RelativeLayout. Something like will work:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">
  <ImageView
    android:layout_alignParentTop="true"
    android:layout_alignParentLeft="true"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"/>
    <Button
       android:layout_width="wrap_content"
       android:layout_height="wrap_content"
       android:layout_alignParentLeft="true"
       android:layout_alignParentBottom="true"
       android:text="blah blah"/>
</RelativeLayout>

Notice the use of params like layout_alignParentLeft which are used to position the view where you want.