Question

I’m developing an android application that contain many custom buttons. Do I need to make an .xml file for each one or there is a way of putting all of them in one .xml file?

<selector xmlns:android="http://schemas.android.com/apk/res/android" >
 <item android:state_pressed="true" android:drawable="@drawable/father2" ></item>
   <item android:drawable="@drawable/father" ></item>

Can I use this code for multiple custom buttons in one xml file?

<animation-list xmlns:android="http://schemas.android.com/apk/res/android" 
android:oneshot="false" >
<item android:drawable="@drawable/brother1" android:duration="200"/>
<item android:drawable="@drawable/brother2" android:duration="200"/>
<item android:drawable="@drawable/brother3" android:duration="200"/>
<item android:drawable="@drawable/brother4" android:duration="200"/>
<item android:drawable="@drawable/brother5" android:duration="200"/>

And I also have an animated list; can I use multiple animated lists in one xml file?

Answer 1

It depends what part of your button is custom. If only the image or text is custom, you could put them inside of res/styles.xml and then theme the Buttons that you create inside of your XML within other layouts using those themes.

<LinearLayout ... >
   <!--stuff-->
   <Button style="@style/customButtonStyle1" ... other attributes />
</LinearLayout>

If they have different states (e.g., pressed, selected, unselected) you can use a <selector> resource to assign values (images, text) to the different states. A quick google shows this tutorial for selectors.