How do I size a UITextView to its content?

Is there a good way to adjust the size of a UITextView to conform to its content? Say for instance I have a UITextView that contains one line of text:

Dispelling the UIImage imageNamed: FUD

I see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good - especially when rendering UITableView s. See this SO question for example or this article on iPhoneDeveloperTips.com

UIImagePickerController, UIImage, Memory and More?

I've noticed that there are many questions about how to handle UIImage objects, especially in conjunction with UIImagePickerController and then displaying it in a view (usually a UIImageView ). Here is a collection of common questions and their answers. Feel free to edit and add your own.

How do I vertically align text within a UILabel?

I have an UILabel with two lines. Sometimes, when the text is short enough, this text is displayed in the vertical center of the UILabel.

Checking if a UIViewController is about to get Popped from a navigation stack?

I need to know when my view controller is about to get popped from a nav stack so I can perform an action.

Are there any good UIScrollView Tutorials on the net?

Any good links are highly appreciated! This goes to community wiki.

Great UIKit/Objective-C code snippets

New to Objective-C iPhone/iPod touch/iPad development, but I'm starting to discover lots of power in one-liners of code such as this:

View floating above all ViewControllers

Is it possible on iOS that a view always floats above all other views. I ask this because what I would like to achieve is a view that floats above a ViewController, and then a Modal View Controller slides in, whilst that particular view is still floating over that Modal View Controller (hope you get what I am trying to say).

CADisplayLink with NSRunLoopCommonModes not executed for every frame when tracking UIScrollView?

I am trying to execute a small piece of code on every single frame in a regular (non-OpenGL) iPhone app. The goal is to have a frame counter so that I can measure (rather than guess) where the slow points in the app are and fix them to create a better user experience.

UIImage Resize without loss of quality

Im looking for an external library (or a method using Apple frameworks that doesn't destroy the quality) which will let me scale down images.

How to programmatic segue from one UIViewController to another without Modal or Push?

If one UIViewController is a login screen, and the next one is the app's home screen, what would be the most optimal way to program the transition.