You can use this extension :
com.ghostfox.SimpleBase64.aix (6.0 KB)
The extension has two simple functions :
Converts the image specified with the path to a Base64 String
Converts the Base64 String to an image that is displayed in the Image component .
Permissions needed : android.permission.READ_EXTERNAL_STORAGE to convert images from the external SDcard
If you need any other functions , please post here or send a PM .