// {
IBOutlet UIImageView *_imageView;
IBOutlet UIImageView *_bushImageView;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
_imageView =[[UIImageView alloc]initWithFrame:CGRectMake(50, 100, 76, 76)];
[_imageView setImage:[UIImage imageNamed:@"c"]];
[self.view addSubview:_imageView];
//设置圆角
_imageView.layer.cornerRadius =10;
//设置剪裁
_imageView.layer.masksToBounds =YES;
//打开_imageView点击事件
_imageView.userInteractionEnabled =YES;
UILongPressGestureRecognizer *longPress =[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(selec)];
[_imageView addGestureRecognizer:longPress];
}
- (void)selec{
[self addBtn];
//创建动画数组
CAAnimationGroup *group =[CAAnimationGroup animation];
CAAnimation *animation0=[self rotationAnimation];
CAAnimation *animation1 =[self rotationAnimation];
group.animations =@[animation0,animation1];
//次数
group.repeatCount =HUGE_VALF;
//动画时间 动画组的时间 可以和内部各个动画的时间不同
group.duration =.2f;
[_imageView.layer addAnimation:group forKey:@"group"];
}
//图标摇晃
- (CAKeyframeAnimation *)rotationAnimation{
CAKeyframeAnimation *animation =[CAKeyframeAnimation animationWithKeyPath:@"transform.rotation.z"];
animation.duration =.2f;
double angle =M_PI_4/16.f;
animation.values =@[@(-angle),@(angle),@(-angle)];
return animation;
}
//图标位移
- (CAKeyframeAnimation *)positionAnimation{
CAKeyframeAnimation *animation =[CAKeyframeAnimation animationWithKeyPath:@"transform.translation"];
animation.duration =.2f;
CGFloat offset =1;
NSValue *value1 =[NSValue valueWithCGPoint:CGPointMake(-offset, -offset)];
NSValue *value2 =[NSValue valueWithCGPoint:CGPointMake(-offset, offset)];
NSValue *value3 =[NSValue valueWithCGPoint:CGPointMake(offset, -offset)];
NSValue *value4 =[NSValue valueWithCGPoint:CGPointMake(offset, offset)];
animation.values =@[value1,value2,value3,value4];
return animation;
}
//创建删除按钮
- (void)addBtn{
UIButton *btn =[UIButton buttonWithType:UIButtonTypeCustom];
btn.frame =CGRectMake(0, 0, 20, 20);
[btn setImage:[UIImage imageNamed:@"button_icon_close"] forState:UIControlStateNormal];
[btn addTarget:self action:@selector(del) forControlEvents:UIControlEventTouchUpInside];
[_imageView addSubview:btn];
}
- (void)del{
CAAnimationGroup *group =[CAAnimationGroup animation];
group.animations =@[[self animation0],[self animation1],[self animation2]];
group.duration =1;
[_imageView.layer addAnimation:group forKey:@"up"];
}
//transform.scale缩放
- (CABasicAnimation *)animation2{
CABasicAnimation *animation =[CABasicAnimation animationWithKeyPath:@"transform.scale"];
animation.fromValue =@1;
animation.toValue =@0;
animation.beginTime =.75;
animation.duration =.2f;
//如果想让图层保持 显示动画执行后的状态,那就设置为NO,不过还要设置fillMode为kCAFillModeForwards
animation.removedOnCompletion =NO;
animation.fillMode =kCAFillModeForwards;
return animation;
}
//修改透明度 opacity
- (CABasicAnimation *)animation1{
CABasicAnimation *animation =[CABasicAnimation animationWithKeyPath:@"opacity"];
animation.fromValue =@1;
animation.toValue =@0;
animation.beginTime =.75;
animation.duration =.2f;
//如果想让图层保持 显示动画执行后的状态,那就设置为NO,不过还要设置fillMode为kCAFillModeForwards
animation.removedOnCompletion =NO;
animation.fillMode =kCAFillModeForwards;
return animation;
}
//抛物线动画
- (CAKeyframeAnimation *)animation0{
//使用path属性，只能修改position 而不能用transform.translation
CAKeyframeAnimation *animation =[CAKeyframeAnimation animationWithKeyPath:@"position"];
//创建路径
CGMutablePathRef path =CGPathCreateMutable();
//移动到某一点
CGPathMoveToPoint(path, NULL, _imageView.layer.position.x, _imageView.layer.position.y);
//计算向上的贝塞尔曲线的终止点
CGPoint toPoint =CGPointMake(_imageView.center.x+(_bushImageView.center.x-_imageView.center.x)/2, _imageView.center.y-100);
//计算control点
CGPoint cp1 =CGPointMake(_imageView.center.x+30, toPoint.y);
//第一个贝塞尔曲线
CGPathAddQuadCurveToPoint(path, NULL, cp1.x, cp1.y, toPoint.x, toPoint.y);
//第二个贝塞尔曲线点
CGPathAddQuadCurveToPoint(path, NULL, _bushImageView.center.x, cp1.y, _bushImageView.center.x, _bushImageView.center.y);
animation.path =path;
CGPathRelease(path);
//设置动画时间，和动画组时间一致
animation.duration =1;
//设置三次修改path完成的时间点
animation.keyTimes =@[@0,@.3,@1];
//设置path对应的 timeingFunction
animation.timingFunctions =@[[CAMediaTimingFunction functionWithName:@"easeOut"],[CAMediaTimingFunction functionWithName:@"easeOut"],[CAMediaTimingFunction functionWithName:@"easeIn"]];
return animation;
}