mwaterfall/mwphotobrowser

MWPhotoBrowser is an iOS library that gives developers a ready-made photo and video viewing screen to drop into their apps. Instead of building a photo gallery from scratch, you add this library to your project, give it a list of images or videos, and it handles displaying them with a polished interface that supports zooming, panning, and swiping between items. The browser can display content from several sources: images already loaded in memory, photos and videos from the device library, URLs pointing to images hosted online, or local files. When images come from the web, the library downloads and caches them automatically so they do not need to be fetched again. Optional captions can appear below each photo, and users can also select one or more photos, which is useful for building features like sharing or batch actions. A grid view is available that shows all photos as thumbnails at once, letting users jump to a specific photo rather than swiping through one by one. The browser can start in either the full-screen swipe view or the grid view, depending on what makes sense for the app. Navigation arrows, action buttons for sharing, and selection checkboxes can each be turned on or off independently. Integration requires implementing two delegate methods that tell the library how many items there are and what object to use for each one. Beyond that, the setup is a small number of configuration properties. The library works on iOS 7 and later, and all displayed text is localized so it can be used in multilingual apps. The project is available through CocoaPods, a common iOS package manager, which simplifies adding it to an Xcode project. A demo app is included in the repository.