iOS & Object-c Programming

The difference between viewDidUnload and dealloc

Sorry, this entry is only available in 中文.

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Clearing NSUserDefaults

There are many ways to store data in an iOS app. Core Data, SQLite and UIDocuments are all available but often the quick and easy way to store some data is to use NSUserDefaults. Sometimes we need to clear all of NSUserDefaults data in your app. And there are two ways to clear it. 1.Delete […]

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UIImage with rounded corners

In this post I will show a good way to resize UIImage, add shadow, corner radius and still have smooth movement of the image. [css] UIImage *image = [UIImage imageNamed:@"image.png"]; // Begin a new image that will be the new image with the rounded corners // (here with the size of an UIImageView) UIGraphicsBeginImageContextWithOptions(image.size, NO, […]

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