Featured iPhone Development Resources,iOS Development Libraries,Objective-C,Open Source iOS Libraries And ToolsLate last year I mentioned an extensive library allowing you to implement many different animation effects on iOS UI elements without code.
Here’s an add-on category for UITextField called Shake from Andrea Mazzini that adds a customizable shake animation similar to that on the Mac OS X login screen.
You can easily customize how big the shake effect is, the speed of the shaking motion, and the total number of shakes.
Here’s an animated image from the readme showing UITextField+Shake in action:
You can find UITextField+Shake on Github here.
A nice way to provide the user with feedback when they’ve made an incorrect entry.
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Original article: A UITextField Category That Allows You To Create A Customizable Shake Effect
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