摘要：TheUIApplicationclass provides a centralized point of control and coordination for apps running on iOS. Every app must have exactly one instance ofUIA... 阅读全文

摘要：AUIAlertControllerobject displays an alert message to the user. This class replaces theUIActionSheetandUIAlertViewclasses for displaying alerts. After... 阅读全文

摘要：override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) { //所有Segue被调用的时候都会触发这个函数 // 可以根据Segue 的 Identifier 来区别} if let index ... 阅读全文

摘要：func textFieldShouldReturn(textField: UITextField) -> Bool { textField.resignFirstResponder() //由于delegate 的原因 所有方法跟delegate都是相对的 ... 阅读全文