动画封装--弹簧

最新推荐文章于 2025-09-11 21:03:21 发布

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最新推荐文章于 2025-09-11 21:03:21 发布

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文章标签： python

原文链接：https://my.oschina.net/u/2287505/blog/549122

2019独角兽企业重金招聘Python工程师标准>>>

#import "ViewController.h"

@interface ViewController ()
{
    UIImageView *image;
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    image=[[UIImageView alloc]initWithFrame:CGRectMake(0, 100, 50, 50)];
    image.image=[UIImage imageNamed:@"1"];
    [self.view addSubview:image];
}

- (void) touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{
    UITouch *touch=[touches anyObject];
    CGPoint location=[touch locationInView:self.view];
    //创建弹性动画
    //usingSpringWithDamping 范围0-1,越接近0，弹性效果越明显
    //initialSpringVelocity  弹性复原速度
    [UIView animateWithDuration:5.0 delay:1.0 usingSpringWithDamping:0.2 initialSpringVelocity:1.0 options:UIViewAnimationOptionCurveLinear animations:^{
        image.center=location;//最终小球的位置
    } completion:nil];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

转载于:https://my.oschina.net/u/2287505/blog/549122