Jay Versluis Creating picker views is similar to creating table views: you supply an array of data for each component by conforming to the UIPickerViewDataSource protocol. A component is equivalent to a section in a table view, and each component can have several sections. You can’t set much of this up in interface builder other than add […]
New to iOS 7′s AVFoundation Framework is the speech synthesiser. It’s what Siri is using when he/she speaks to you. We can use this as well in our apps by passing a string into an AVSpeechUtterance object, which in turn we pass into an AVSpeechSynthesizer instance. Here’s how: – (IBAction)sayThis:(id)sender { AVSpeechSynthesizer *synthesizer = [[AVSpeechSynthesizer […]
New to iOS 7′s AVFoundation Framework is the speech synthesiser. It’s what Siri is using when he/she speaks to you. We can use this as well in our apps by passing a string into an AVSpeechUtterance object, which in turn we pass into an AVSpeechSynthesizer instance. Here’s how: – (IBAction)sayThis:(id)sender { AVSpeechSynthesizer *synthesizer = [[AVSpeechSynthesizer […]
Another option to share items in your app is to bring up a dialogue that contains several options, like the Photos app does: This is done with a UIActivityViewController and requires minimal work on our part. This controller is very clever and only brings up relevant services (you can’t print a video, or you can’t […]
It is extremely simple to bring up Facebook and Twitter Sheets in your app using the Social Framework. Once imported you can create a new instance of SLComposeViewController, initialise it with text, an image and a URL, and present it modally from your own view controller. You don’t have to specify anything other than which […]
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Everything in your iOS app happens on “the main thread” by default. It’s like at the hairdresser’s – one thing after another. Since iOS 4 however you can execute things “asynchronously” by using Grand Central Dispatch. With it comes another phenomenon called Blocks. To make use of this feature you need to define your own […]