photo-picker-plus
· PhotoPicker+ is a component made for developers to easily integrate it inside their application and enable photo and video picking functionality. This component enables browsing media items from services such as Facebook, Picasa, Instagram, Flickr, Google+, Google Drive, SkyDrive, YouTube and Dropbox. It also enables capturing photos and videos with the native camera application and choosing media items from the device.
Download JD-GUI to open JAR file and explore Java source code file (.class .java)
Click menu "File → Open File..." or just drag-and-drop the JAR file in the JD-GUI window photo-picker-plus-2.3.3.jar file.
Once you open a JAR file, all the java classes in the JAR file will be displayed.