加载Gif图片方法

1、使用webView（直接加载已有gif图片）

NSString *filePath1 = [[NSBundle mainBundle]pathForResource:@"girl.gif" ofType:nil];

    NSData *webGifData = [NSData dataWithContentsOfFile:filePath1];
    
    UIWebView *webView = [[UIWebView alloc]init];
    
    webView.frame = CGRectMake(100, 20, 100, 100);
    
    webView.backgroundColor = [UIColor blueColor];
    
    webView.scalesPageToFit = YES;
//最好设置一下userInteractionEnabled这个属性
    webView.userInteractionEnabled = NO;
    
   [webView loadData:webGifData MIMEType:@"image/gif" textEncodingName:@"" baseURL:[NSURL URLWithString:@""]];
    
    [self.view addSubview:webView];

 2、使用分组图（需要UI切图,图片起名字最好规范一些!!!，其实就是逐帧动画，O(∩_∩)O哈哈哈~）

UIImageView *imagesView = [[UIImageView alloc]init];
    
    imagesView.frame = CGRectMake(100, 140, 100, 100);
    
    NSMutableArray *array  = [NSMutableArray new];
    
    for (int i = 0; i<14; i++) {
        
        UIImage *image = [UIImage imageNamed:[NSString stringWithFormat:@"loading_0000%d",i]];
        
        [array addObject:image];
    }
    
     imagesView.animationImages = array;
    
     imagesView.animationDuration = 0.5;
    
     imagesView.animationRepeatCount =  MAXFLOAT;//这里也可以设置重复次数.
    
     [imagesView startAnimating];
    
     [self.view addSubview: imagesView];

 3、使用了SDwebImage第三方,导入"UIImage+GIF.h"头文件

NSString  *Path = [[NSBundle bundleWithPath:[[NSBundle mainBundle] bundlePath]] pathForResource:@"dog.gif" ofType:nil];
    
    NSData  *imageData = [NSData dataWithContentsOfFile:Path];
    
    UIImageView *sdImage = [UIImageView new];
    
    sdImage.image = [UIImage sd_animatedGIFWithData:imageData];


    sdImage.frame = CGRectMake(100, 260, 150, 100);
    
    [self.view addSubview:sdImage];

 4、从网络下载图片(这里使用的是SDwebimge方法)

 NSString *urlString = @"http://c.hiphotos.baidu.com/zhidao/pic/item/3801213fb80e7becf636ec082c2eb9389a506b6f.jpg";
   
    NSURL    *url       = [NSURL URLWithString:urlString];
    
    NSData   *data      = [NSData dataWithContentsOfURL:url];

    UIImageView *imageView  = [[UIImageView alloc]init];
    
    imageView.frame = CGRectMake(100, 380, 150, 100);
    
    imageView.image = [UIImage sd_animatedGIFWithData:data];
    
    imageView.backgroundColor = [UIColor redColor];
    
    [self.view addSubview:imageView];