Question

I want to flip image for button’s background in xml. I’ve seen example how to do it, but it was programmatically way: http://xjaphx.wordpress.com/2011/06/26/image-processing-image-flipping-mirroring.
Anyway, I have a xml file (button_left_state.xml) like below :

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">  
<item android:state_pressed="true" >
    <rotate android:fromDegrees="180.0" android:toDegrees="180.0" 
    android:pivotX="50%" android:pivotY="50%" android:drawable="@drawable/buttonrightpressed" />    
</item>    

<item>
  <rotate android:fromDegrees="180.0" android:toDegrees="0.0" 
    android:pivotX="50%" android:pivotY="50%" android:drawable="@drawable/buttonright"/>
</item>   
</selector>

But this code just rotate image to 180 degrees.
Is it possible to flip image in xml?

Answer 1

I resolve my problem by using layer-list:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item >
        <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
            <item>
                <shape android:shape="rectangle">
                    <gradient android:startColor="#9f9" android:centerColor="#000"
                        android:endColor="#0f0" android:angle="-90" />
                    <stroke android:width="1.0px" android:color="#444" />
                    <corners android:bottomRightRadius="7dip"
                        android:bottomLeftRadius="0.1dp"
                        android:topLeftRadius="0.1dp"
                        android:topRightRadius="7dip"/>
                </shape>
            </item>
            <item>
                <rotate android:fromDegrees="180.0" android:toDegrees="180.0"
                    android:pivotX="50%" android:pivotY="50%" android:drawable="@drawable/arrow_right" />
            </item>
        </layer-list>
    </item>
</selector>