一 概述

• 模仿刪除應(yīng)用時(shí)的圖標(biāo)抖動(dòng)
• 頁(yè)面上添加圖片，勾選屬性User Interaction Enabled，給圖片設(shè)置長(zhǎng)按事件，并執(zhí)行抖動(dòng)動(dòng)畫
• 圖標(biāo)抖動(dòng)時(shí)，先往左旋轉(zhuǎn)5度，再向右旋轉(zhuǎn)5度，再向左旋轉(zhuǎn)5度恢復(fù)原位置，再重新開始

二 過(guò)程

2.1 Main.storyboard中添加動(dòng)畫，并設(shè)置User Interaction Enabled

User Interaction Enabled

2.2 定義旋轉(zhuǎn)角度

#define angle2radian(x) ((x)/180.0*M_PI)

2.3 長(zhǎng)按事件

UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];-(void)longPress:(UILongPressGestureRecognizer *)longPress {if (longPress.state==UIGestureRecognizerStateBegan) {CAKeyframeAnimation *anim=[CAKeyframeAnimation animation];anim.keyPath=@"transform.rotation";anim.values=@[@(angle2radian(-5)),@(angle2radian(5)),@(angle2radian(-5))];anim.repeatCount=MAXFLOAT;anim.duration=0.5;[_imageView.layer addAnimation:anim forKey:nil];} }

2.4 ImageView添加長(zhǎng)按事件

[_imageView addGestureRecognizer:longPress];

2.5 代碼

- (void)viewDidLoad {[super viewDidLoad];UILongPressGestureRecognizer *longPress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(longPress:)];[_imageView addGestureRecognizer:longPress];} -(void)longPress:(UILongPressGestureRecognizer *)longPress {if (longPress.state==UIGestureRecognizerStateBegan) {CAKeyframeAnimation *anim=[CAKeyframeAnimation animation];anim.keyPath=@"transform.rotation";anim.values=@[@(angle2radian(-5)),@(angle2radian(5)),@(angle2radian(-5))];anim.repeatCount=MAXFLOAT;anim.duration=0.5;[_imageView.layer addAnimation:anim forKey:nil];} }

2.6 效果圖

總結(jié)

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