JMAnimatedTextEntry

JMAnimatedTextEntry allows you to easily animate text entry on UIKit components.

Usage

Basic

JMAnimatedTextEntry adds methods to UIKit components that have the text property. To animated the entry of text simply:

UILabel *label = ...;

[label jm_setText:@"Some text" animatedWithDuration:1.0 completion:^(BOOL finished) {
	if	(finished) {
	  // Text has finished animating.
	} else {
	  // Text entry was interrupted.
	}
}];

If text is being animated and you need it to stop, simply call:

[label jm_stopTextAnimation];

Advanced

It's actually very easy to add JMAnimatedTextEntry methods to any class that has the text property. Let's say for example you have a label class that displays text in a spiral. You could enable animated text entry on it simply by adding the JMAnimatedTextEntry protocol:

@interface SpiralLabel : UIView <JMAnimatedTextEntry>

...

@property NSString *text;

...

@end

And then adding the following to the +initialize method on the class:

+ (void)initialize {
	if	([self class] == [SpiralLabel class]) {
		[JMAnimatedTextEntryRegistration registerAnimatedTextEntryClass:[SpiralLabel class]];
	}
}

After this you can safely call:

SpiralLabel *spiralLabel = ...;

[spiralLabel jm_setText:@"Some spiral text" animatedWithDuration:0.5 completion:nil];

Disclaimer

At this point, this project most likely works but has not been extensively tested. It uses the Objective C runtime to add the JMAnimatedTextEntry methods to the classes which isn't exactly standard operating procedure.

Creator

Joey Meyer

License

JMAnimatedTextEntry is available under the MIT license. See the LICENSE file for more info.