TypeWriter UITextView Subclass.

@property(nonatomic, copy) NSString *typeText;// display text
@property(nonatomic) NSTimeInterval typeInterval;// or typeCharactersPerSec
@property(nonatomic) NSTimeInterval typeCharactersPerSec;// or typeInterval
@property(nonatomic, weak) id <TypeWriterTextViewProtocol> typeWriterDelegate;// for delegate
// protocol
@optional
- (void)completeTypingText:(TypeWriterTextView *)typeWriterTextView;

License : MIT

ref . タイプライター風の表示をするUITextViewのライブラリを書いた | Technology-Gym