swift textfield focus
ios – focusing a text field in swift – Stack Overflow
swift textfield focus event
iphone – Detect Focus Change for UITextField – Stack Overflow
textFieldDidBeginEditing
textFieldDidEndEditing
然后去看看原型：
public protocol UITextFieldDelegate : NSObjectProtocol { @available(iOS 2.0, *) optional public func textFieldShouldBeginEditing(textField: UITextField) -> Bool // return NO to disallow editing. @available(iOS 2.0, *) optional public func textFieldDidBeginEditing(textField: UITextField) // became first responder @available(iOS 2.0, *) optional public func textFieldShouldEndEditing(textField: UITextField) -> Bool // return YES to allow editing to stop and to resign first responder status. NO to disallow the editing session to end @available(iOS 2.0, *) optional public func textFieldDidEndEditing(textField: UITextField) // may be called if forced even if shouldEndEditing returns NO (e.g. view removed from window) or endEditing:YES called @available(iOS 2.0, *) optional public func textField(textField: UITextField, shouldChangeCharactersInRange range: NSRange, replacementString string: String) -> Bool // return NO to not change text @available(iOS 2.0, *) optional public func textFieldShouldClear(textField: UITextField) -> Bool // called when clear button pressed. return NO to ignore (no notifications) @available(iOS 2.0, *) optional public func textFieldShouldReturn(textField: UITextField) -> Bool // called when ‘return’ key pressed. return NO to ignore. } |
去写代码试试
果然是可以的：
func textFieldDidBeginEditing(textField: UITextField) { // print("textField=\(textField)") // //<UITextField: 0x7b9a3b10; frame = (25 225.5; 270 40); text = ‘11111111111′; clipsToBounds = YES; opaque = NO; gestureRecognizers = <NSArray: 0x7a74d870>; layer = <CALayer: 0x7b9a5510>> } func textFieldDidEndEditing(textField: UITextField) { print("textField=\(textField)") } |
分别对应着：
点击开始编辑文本
编辑完毕离开文本
［总结］
想要获得文本的输入和离开的事件，对应着获得和失去焦点，可以用对应的
UITextFieldDelegate的代理函数：
func textFieldDidBeginEditing(textField: UITextField) func textFieldDidEndEditing(textField: UITextField) |
转载请注明：在路上 » ［已解决］swift判断文字输入框获得焦点