iOS--輸入密碼錯誤的時候,抖動

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直接上代碼:

////  ViewController.m//  密碼錯誤--抖動動畫////  Created by 劉志武 on 16/8/6.//  Copyright © 2016年 zhiwuLiu. All rights reserved.//#import "ViewController.h"@interface ViewController ()@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];    // Do any additional setup after loading the view, typically from a nib.        UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(50, 300, 200, 30)];    label.backgroundColor = [UIColor purpleColor];    label.tag = 1000;    [self.view addSubview:label];            }-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{        UILabel *label = [self.view viewWithTag:1000];        [self shakeAnimationForView:label];        }#pragma mark 抖動動畫- (void)shakeAnimationForView:(UIView *) view{    // 擷取到當前的View    CALayer *viewLayer = view.layer;    // 擷取當前View的位置    CGPoint position = viewLayer.position;    // 移動的兩個終點位置    CGPoint x = CGPointMake(position.x + 5, position.y);    CGPoint y = CGPointMake(position.x - 5, position.y);    // 設定動畫    CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];    // 設定運動形式    [animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut]];    // 設定開始位置    [animation setFromValue:[NSValue valueWithCGPoint:x]];    // 設定結束位置    [animation setToValue:[NSValue valueWithCGPoint:y]];    // 設定自動反轉    [animation setAutoreverses:YES];    // 設定時間    [animation setDuration:.06];    // 設定次數    [animation setRepeatCount:3];    // 添加上動畫    [viewLayer addAnimation:animation forKey:nil];    }- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}@end

 

iOS--輸入密碼錯誤的時候,抖動