I’ve mentioned a couple of excellent open source UIActivity providers for sharing files on Dropbox and adding events to the calendar.
When creating a UIActivity provider there are a number of methods that need to be overridden.
Mariano Abdala has created an open source project called ZYActivity containing a library that you can use to reduce the amount of boilerplate code required in creating a UIActivity provider.
ZYActivity also contains a couple of examples that you can use as a starting point in creating your own UIActivity providers.
You can find ZYActivity on Github here.
A great starting point on creating a UIActivityProvider.
Original article: Library And Examples For Easier iOS UIActivity Provider Creation
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