iOS实现图片抖动效果
时间：2021-05-28 08:03:06|栏目：iOS代码|点击： 次
本文实例为大家分享了iOS实现图片抖动效果的具体代码，供大家参考，具体内容如下
效果图：
核心代码：
//
// ViewController.m
// 图标抖动
//
// Created by llkj on 2017/8/29.
// Copyright © 2017年 LayneCheung. All rights reserved.
//
#import "ViewController.h"
#define angle2Rad(angle) ((angle) / 180.0 *M_PI)
@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageV;
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.imageV.userInteractionEnabled = YES;
//添加长按手势
UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(longPress:)];
[self.imageV addGestureRecognizer:longPress];
}
- (void)longPress:(UILongPressGestureRecognizer *)longPress{
//创建动画对象
CAKeyframeAnimation *anim = [CAKeyframeAnimation animation];
anim.keyPath = @"transform.rotation";
anim.values = @[@(angle2Rad(-5)),@(angle2Rad(5))];
anim.repeatCount = MAXFLOAT;
// anim.duration = 1;
anim.autoreverses = YES;
[self.imageV.layer addAnimation:anim forKey:nil];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
小编再给大家补充一段iOS UIView视图抖动效果的实现代码：
/**
* 抖动效果
*
* @param view 要抖动的view
*/
- (void)shakeAnimationForView:(UIView *) view {
CALayer *viewLayer = view.layer;
CGPoint position = viewLayer.position;
CGPoint x = CGPointMake(position.x + 1, position.y);
CGPoint y = CGPointMake(position.x - 1, position.y);
CABasicAnimation *animation = [CABasicAnimation animationWithKeyPath:@"position"];
[animation setTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionDefault]];
[animation setFromValue:[NSValue valueWithCGPoint:x]];
[animation setToValue:[NSValue valueWithCGPoint:y]];
[animation setAutoreverses:YES];
[animation setDuration:.06];
[animation setRepeatCount:3];
[viewLayer addAnimation:animation forKey:nil];
}
