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add missing constraints,自动搞定，手工再调整。查看全部
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Views Update Frames or Constraints查看全部
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Storyboard preview查看全部
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Main.storyboard checked User Auto Layout查看全部
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import Social @IBAction func btnShareClicked(sender: AnyObject) { var controller:SLComposeViewController = SLComposeViewController(forServiceType: SLServiceTypeTwitter); controller.setInitialText("text you want to share"); controller.addImage(image:UIImage!); self.presentViewController(controller, animated: true, completion: nil); }查看全部
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Convert Single ViewController to Navigation View or Tab View Select existing rootViewController Menu=>Embed In=>(Navigation Controller & Tab Bar Controller) Segue can choose between modal(Single) & Push (Nav)查看全部
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unwind segue swift http://www.raywenderlich.com/81880/storyboards-tutorial-swift-part-2查看全部
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http://www.codingexplorer.com/segue-swift-view-controllers/ override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) if segue.identifier == "string"查看全部
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Swift extension https://developer.apple.com/library/prerelease/ios/documentation/Swift/Conceptual/Swift_Programming_Language/Extensions.html查看全部
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https://developer.apple.com/library/ios/documentation/Swift/Conceptual/Swift_Programming_Language/TypeCasting.html as? or as!查看全部
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如何处理Option的IBOutlet Binding if let year = yearOfBirth.text.toInt(){ //Year }else{ //alert("Need input somthing") } TouchEnd hiddenKeyboard override func touchesEnded(touches: NSSet, withEvent event: UIEvent) { birth.resignFirstResponder() }查看全部
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Storyboard User defined Runtime Attribute http://ios-blog.co.uk/tutorials/user-defined-runtime-attributes/查看全部
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func touchesEnded查看全部
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可以拖动自己的代码到代码库，作为模板。查看全部
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结构和类的区别 结构数据在栈里，类在堆里 调用结构体数据时，整个结构都被拷贝到内存 调用类时，只有指针被拷贝到内存查看全部
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