Showing posts with label iOS9. Show all posts
Showing posts with label iOS9. Show all posts

Thursday, August 6, 2015

How Not to Crash #3: NSNotification

In general, I prefer NSNotification to KVO and (especially) to bindings. I do use KVO sometimes — there are times when it's the most sensible thing. But NSNotification, like many older APIs, is easier to use without crashing.


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UIGestureRecognizer Tutorial: Creating Custom Recognizers

Custom gesture recognizers delight users by making apps feel unique and alive. If basic taps, pans, and rotations are the utility and pickup trucks of the iOS world, custom gesture recognizers are the flashy hot rods with custom paint jobs and hydraulics. Read this custom UIGestureRecognizer tutorial and learn all about gesture recognizers! In this tutorial you'll take a fun little "find the differences" game and make it interactive by adding a custom circle gesture recognizer to select the non-matching image. Along the way you'll learn:


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iOS9 Day-by-Day :: Day 2 :: UI Testing

Automated User Interface Testing is a valuable tool when developing any software application. It can detect problems with your app quickly, and a successful test suite run can provide you with confidence before a release. On the iOS platform, this is currently done using UIAutomation, with tests written in JavaScript. This involves opening up a separate app, Instruments, and creating and running scripts. The workflow is painfully slow and takes a long time to get used to.


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iOS9 Day-by-Day :: Day 5 :: Xcode Code Coverage Tools

Code coverage is a tool that helps you to measure the value of your unit tests. High levels of code coverage give you confidence in your tests and indicate that your application has been more thoroughly tested. You could have thousands of tests, but if they only test one of your many functions, then your unit test suite isn't that valuable at all! There's no ideal code coverage percentage that you should aim for. This will vary drastically depending your project. If your projects has a lot of visual components that you can't test, then the target figure will be a lot lower than if you're putting together a data processing framework, for example.


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Thursday, July 2, 2015

Create a Native Apple Watch App for watchOS 2

At WWDC 2015, Apple announced the first major update to their Apple Watch platform, watchOS 2. Along with many new features and improvements, the most important aspect of this update for developers is the ability to create native Apple Watch apps. These native apps perform better and give developers access to new features, including the digital crown, microphone, and health sensors. In this tutorial, I will show you how to create a native WatchKit application and briefly outline some of the new APIs available in watchOS 2. I will also show you how to upgrade an existing non-native watchOS 1 app to a native watchOS 2 app.


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iOS 9: Staying Organized with Storyboard References

Even though storyboards have been around since iOS 5, many developers are reluctant to use them in their projects. A typical remark is that storyboards are great for small projects, but fall short for larger projects. Apple has taken this feedback to heart and resolved many common problems by introducing storyboard references. In this tutorial, I will show you what storyboard references are and how they can help you break down your project's user interfaces into manageable pieces.


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