本文将带你了解IOS开发入门iOS开发：SDWebImage4.0之后解决加载gif不显示问题，希望本文对大家学IOS有所帮助。

之前的使用方法

      UIImageView *imgView = [UIImageView new];    imgView.contentMode =   UIViewContentModeScaleAspectFit;      imgView.frame = CGRectMake(0, 0, 100, 30);    NSString    *filePath = [[NSBundle bundleWithPath:[[NSBundle mainBundle]   bundlePath]]pathForResource:@"going" ofType:@"gif"];    NSData    *imageData = [NSData dataWithContentsOfFile:filePath];    imgView.backgroundColor = [UIColor   clearColor];    imgView.image =   [UIImage sd_animatedGIFWithData:imageData];      [self addSubview:imgView];

SDWebImage4.0之后使用以上的方法显示gif图，会显示不出来。
访问SDWebImage的github网址

Animated Images (GIF)   support

Starting with the 4.0 version, we rely onFLAnimatedImageto take   care of our animated images. If you use cocoapods, addpod   'SDWebImage/GIF'to your podfile. To use it, simply make sure you   useFLAnimatedImageViewinstead ofUIImageView.   Note: there is a backwards compatible feature,   so if you are still trying to load a GIF into aUIImageView, it   will only show the 1st frame as a static image.   Important: FLAnimatedImage only works on the iOS   platform. For OS X, useNSImageViewwithanimatesset   toYESto show the entire animated images andNOto only   show the 1st frame. For all the other platforms (tvOS, watchOS) we will   fallback to the backwards compatibility feature described above  

使用下面的新方法就可以正常显示gif

    FLAnimatedImageView *imgView =   [FLAnimatedImageView new];      imgView.contentMode = UIViewContentModeScaleAspectFit;    imgView.frame = CGRectMake(0, 0, 100,   30);    NSString  *filePath = [[NSBundle   bundleWithPath:[[NSBundle mainBundle]   bundlePath]]pathForResource:@"going" ofType:@"gif"];    NSData    *imageData = [NSData dataWithContentsOfFile:filePath];    imgView.backgroundColor = [UIColor   clearColor];    imgView.animatedImage =   [FLAnimatedImage animatedImageWithGIFData:imageData];    [self   addSubview:imgView];

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