RTL support on ImageButton with autoMirror for src drawable

Make an XML drawable and set android:autoMirrored="true". This value is ignored before API 19.

res/drawable/icon_auto_mirrored.xml

<?xml version="1.0" encoding="utf-8"?>
<bitmap xmlns:android="http://schemas.android.com/apk/res/android"
        android:src="@drawable/icon"
        android:autoMirrored="true"/>

Now use android:src="@drawable/icon_auto_mirrored in your layout.

1. Add rotationY to the ImageView :

   < ImageView ... android:rotationY="@integer/rtl_mirror_flip"

2. Declare rtl_mirror_flip as 0 (for ltr), or 180 (for rtl ) :

   < integer name="rtl_mirror_flip">0< /integer> or < integer name="rtl_mirror_flip">180< /integer>