Using same references with different sizes

Question

I have some images in my App and want to use the same reference for multiple screens, is it possible to use the scale tag in xml to re-size the image and use it with different resolutions? when i tried it the picture disappeared!

For example i did this :

First of all i created new XML file add_more_items_scaled

   <?xml version="1.0" encoding="utf-8"?>
<scale xmlns:android="http://schemas.android.com/apk/res/android" 
    android:drawable="@drawable/add_more_items"
    android:scaleWidth="75%"
    android:scaleHeight="75%">


</scale>

then created another XML file add_more_items_button

  <?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:drawable="@drawable/button_pressed"
        android:state_pressed="true"></item>
    <item android:drawable="@drawable/add_more_items_scaled"
        android:state_focused="true"></item>
    <item android:drawable="@drawable/add_more_items_scaled"></item>

and when i set the background of the button @android:background:"@drawable/add_more_items_button" it gives me an empty button

So, any suggestions?

score 0 · Answer 1 · answered Jun 24 '14 at 03:33

You cant apply scale tag to the Image, as it purpose it to scale drawables not images.

As the documentation for it says:

A drawable defined in XML that changes the size of another drawable based on its current level.

solution:

You can put a weight on your button and instead of using Button you can use ImageButton and set its scaleType to fitXY to fill the bound of it.

Using same references with different sizes

1 Answers1