UIImageView 实现一组动画

kaiwange

于 2015-12-21 21:12:13 发布

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分类专栏： IOS 动画

本文链接：https://blog.youkuaiyun.com/luoye2486/article/details/50374564

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本文介绍了一个使用Objective-C创建加载动画的方法。通过初始化一个UIImageView并设置其属性来显示循环播放的图片序列，形成动画效果。该动画在指定的时间后停止。

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#import "ViewController.h"

@interface ViewController ()

@property(nonatomic,strong) NSMutableArray *loadImagesArray;

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    
    _loadImagesArray = [[NSMutableArray alloc] init];
    
    for (int i=1; i<=19; i++) {
        UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"loading_%d.png",i]];
        [_loadImagesArray addObject:image];
    }
    //180*72 图片大小
    UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake((self.view.frame.size.width-90)*0.5, (self.view.bounds.size.height-36)*0.5, 90, 36)];
    imageView.animationImages = _loadImagesArray;
    imageView.tag = 1000;
    imageView.animationDuration = 1;
    imageView.animationRepeatCount = 0;
    [imageView startAnimating];
    [self.view addSubview:imageView];
    
    [self performSelector:@selector(stopAnimating) withObject:nil afterDelay:5];
}

- (void)stopAnimating
{
    UIImageView *image = [self.view viewWithTag:1000];
    [image stopAnimating];
}