SDWebImage播放----Gif图片

1.框架下载地址:
https://github.com/SDWebImage/SDWebImage

2.命令:
pod 'SDWebImage'

3.导入文件
#import "SDAnimatedImageView.h"
#import "SDAnimatedImageView+WebCache.h"

4.控件初始化
 @property (nonatomic, strong) SDAnimatedImageView *bannerView;
               .......................................
 _bannerView = [[SDAnimatedImageView alloc] init];
 _bannerView.backgroundColor = [UIColor clearColor];
 _bannerView.contentMode = UIViewContentModeScaleAspectFit;
 _bannerView.userInteractionEnabled = YES;
  [self.contentView addSubview:_bannerView];

  /// 布局代码
  [_bannerView mas_makeConstraints:^(MASConstraintMaker *make) {
  }];

5.赋值使用
      ///  _urlString 为服务器返回的链接
     NSString *_urlString = @"https://sxxxxxxx.gif";
    [self.bannerView sd_setImageWithURL:[NSURL URLWithString:_urlString]];
    /// 此方法也兼容 .png .jpg