Swift3.0－UITextField创建以及使用

谁践踏了优雅 2023-10-17 10:15 37阅读 0赞

UITextField创建以及使用

class ViewController: UIViewController,UITextFieldDelegate {
    
        override func viewDidLoad() {
            super.viewDidLoad()
            myTextField()
            
            //获得所有字体名称
            let fontArr = UIFont.familyNames
            print("获得所有字体名称--\(fontArr)")
        }
    
        func myTextField() {
            let text = UITextField(frame:CGRect(x:100,y:100,width:256,height:40))
            text.borderStyle = UITextBorderStyle.roundedRect
            text.font = UIFont(name:"Thonburi",size:12)
            //内容水平对齐
            text.contentHorizontalAlignment = UIControlContentHorizontalAlignment.center
            //内容垂直对齐
            text.contentVerticalAlignment = UIControlContentVerticalAlignment.center
            //文字水平对齐
            text.textAlignment = NSTextAlignment.left
            text.placeholder = "粑粑李红"
            text.isSecureTextEntry = true
            //一个视图的所有输入框失去第一响应者
            self.view.endEditing(true)
            text.becomeFirstResponder()
            //清除按钮
            text.clearButtonMode = UITextFieldViewMode.whileEditing
            //设置键盘样式
            text.keyboardType = UIKeyboardType.default
            //设置return键
            text.returnKeyType = UIReturnKeyType.done
            //添加响应用户事件
            text.addTarget(self, action:Selector(("changed:")), for: UIControlEvents.editingChanged)
            text.delegate = self
            self.view.addSubview(text)
        }
        
        func changed(tf:UITextField){
            print(tf.text ?? "")
        }
        
        func textFieldDidEndEditing(_ textField: UITextField) {
        }
        
        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
        }
    }