Swift带振动效果的UITextField

代码中有注释，就直接上代码了

import Foundation
import UIKit

extension UITextField{
    //定义类型
    enum ShakeType {
        case Horizontal
        case Vertical
    }

    /**
     UITextField的振动方法
     - parameter time:       振动次数
     - parameter delta:      振动偏移量
     - parameter speed:      动画速度
     - parameter shakeType:  振动类型
     - parameter completion:
     */
    func shakeTextField(time: Int = 10,delta: CGFloat = 5,speed: NSTimeInterval = 0.03,shakeType: ShakeType = .Horizontal,completion:(() -> Void)? = nil){ //根据time的奇偶来确定振动方向 let direction:CGFloat = (time % 2 == 0) ? 1 : -1 UIView.animateWithDuration(speed,animations: { //根据振动类型选择动画 self.transform = (shakeType == ShakeType.Horizontal) ? CGAffineTransformMakeTranslation(delta * direction,0) : CGAffineTransformMakeTranslation(0,delta * direction) }) { (finished) in if time <= 0{ UIView.animateWithDuration(speed,animations: { self.transform = CGAffineTransformIdentity },completion: { (finished) in //如果有回调方法，则实现回调方法 if let comp = completion{ comp() } }) return } self.shakeTextField(time - 1,delta: delta,speed: speed,shakeType: shakeType,completion: completion) } } }

函数调用

class ViewController: UIViewController {

    var textField:UITextField!
    var textField1:UITextField!

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view,typically from a nib.
        textField = UITextField(frame: CGRect(x: 10,y: 100,width: 200,height: 40))
        textField.backgroundColor = UIColor.grayColor()
        self.view.addSubview(textField)

        textField1 = UITextField(frame: CGRect(x: 10,y: 150,height: 40))
        textField1.backgroundColor = UIColor.grayColor()
        self.view.addSubview(textField1)

        let btn = UIButton(frame: CGRect(x: 10,y: 200,height: 40))
        btn.backgroundColor = UIColor.blueColor()
        btn.setTitle("振动吧",forState: .Normal)
        btn.addTarget(self,action: #selector(self.startShake),forControlEvents: .TouchUpInside)
        self.view.addSubview(btn)
    }

    func startShake(){
        textField.shakeTextField(shakeType: UITextField.ShakeType.Vertical) {
            print("我振动了1")
        }
        textField1.shakeTextField(shakeType: UITextField.ShakeType.Horizontal) {
            print("我振动了2")
        }
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


}

效果图

回调函数打印