GCD下载后清除缓存

//GCD下载后清除缓存
1 —（void）didReceiveMemoryWarning{
2  [super didReceiveMemoryWarning];
3  //清除缓存
4  [self.cache removeAllObjectds];
5  //取消下载
6  [self.queue cancelAllObjects];
7  [self.downloading removeAllObjects];
8 }
 
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原文地址：https://www.cnblogs.com/wangshengl9263/p/3234603.html