- (RACSignal *)rac_imageSelectedSignal
Creates a signal for every new selected image.
When this method is invoked, the
rac_delegateProxy will become the receiver’s delegate. Any previous delegate will become the [RACDelegateProxy rac_proxiedDelegate], so that it receives any messages that the proxy doesn’t know how to handle. Setting the receiver’s
delegate afterward is considered undefined behavior.
Returns a signal which will send the dictionary with info for the selected image. Caller is responsible for picker controller dismissal. The signal will complete itself when the receiver is deallocated or when user cancels selection.