iOS 获取手机缓存的方法、清空的方法

注意：先导入SDImageCache.h和SDImageCache.m

1.获取缓存方法

• (NSString *)getSdHuanCun{
  NSUInteger intg = [[SDImageCache sharedImageCache] getSize];
  NSString * currentVolum = [NSString stringWithFormat:@"%@",[self fileSizeWithInterge:intg]];

  return currentVolum;
  }

• (NSString )fileSizeWithInterge:(NSInteger)size{
  // 1k = 1024, 1m = 1024k
  if (size < 1024) {// 小于1k
  return [NSString stringWithFormat:@"%ldB",(long)size];
  }else if (size < 1024 * 1024){// 小于1m
  CGFloat aFloat = size/1024;
  return [NSString stringWithFormat:@"%.0fK",aFloat];
  }else if (size < 1024 * 1024 * 1024){// 小于1G
  CGFloat aFloat = size/(1024 * 1024);
  return [NSString stringWithFormat:@"%.1fM",aFloat];
  }else{
  CGFloat aFloat = size/(10241024*1024);
  return [NSString stringWithFormat:@"%.1fG",aFloat];
  }
  }
  2.清除缓存的方法
  [[SDImageCache sharedImageCache] clearDiskOnCompletion:nil];