You know by default we can only one image from photo gallery. Multi Image Picker module helps to select multiple images from Gallery.
This module developed from existing Android open source library MultipleImagePick. And it uses Universal image loader library for asynchronous loading and caching.
Features and Benefits:
1) Select multiple images
2) Maximum selection limit
3) Custom button title and error message
4) Method for scale down the bitmap
5) Callback methods
you can see more details Android Multi Image Picker Module and you can see full code here it is open source as well – Github code
And also you can downloaded from Appcelerator marketplace