android - Putting ImageView on the bottom of the screen -

i trying put imageview on bottom of layout following xml:

        <?xml version="1.0" encoding="utf-8"?>         <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"             xmlns:tools="http://schemas.android.com/tools"             android:layout_width="fill_parent"             android:layout_height="fill_parent"             android:orientation="vertical"             tools:context=".mainactivity" >             <linearlayout                 android:layout_width="fill_parent"                 android:layout_height="fill_parent"                 android:background="#eeeeee"                 android:gravity="center"                 android:orientation="horizontal" >                 <imageview                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:layout_gravity="bottom"                     android:src="@drawable/photo" />             </linearlayout>         </linearlayout> 

i following instructions found here http://sandipchitale.blogspot.co.uk/2010/05/linearlayout-gravity-and-layoutgravity.html

only difference use imageview instead of button here:

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:orientation="vertical" >     <linearlayout         android:layout_width="fill_parent"         android:layout_height="fill_parent"         android:gravity="center"         android:orientation="horizontal" >         <button             android:id="@+id/button03"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_gravity="bottom"             android:text="bottom" >         </button>     </linearlayout> </linearlayout> 

which puts button on expected place:

unfortunately isn't case in xml on top of post. imageview isn't placed on bottom button in reference xml is.

any ideas why happens ?

try using relativelayout instead of linearlayout , use parameter android:layout_alignparentbottom = "true".

edit: try giving layout_height , layout_width wrap_content linearlayout holds imageview.

or might image using has space above , below it.

update:

the problem size of image. larger screen size. suggest programmatically read screen size of device below code:

displaymetrics displaymetrics = new displaymetrics(); getwindowmanager().getdefaultdisplay().getmetrics(displaymetrics); int height = displaymetrics.heightpixels; int width = displaymetrics.widthpixels; 

and set height , width imageview programmatically below:

image_view.getlayoutparams().height = height - 50; image_view.getlayoutparams().width = width - 50;