网络图片下载

Question

• (void)initData {
  [NetworkTool postWithURL:@"http://61.153.21.150/NBQXService/app/jc/zhyj/dzzh" parameters:nil successBlock:^(Boolean isSuc, NSString message, NSDictionary resultDic) {

     if (isSuc) {
         NSDictionary *dic = [resultDic[@"ResultData"] objectAtIndex:0];
     
             NSString *imageStr = [NSString stringWithFormat:@"61.153.21.150/NBQXService/%@",dic[@"pics"]];

  // self.imageStr = imageStr;

         
         NSURL *url = [NSURL URLWithString:imageStr];
         [self.mapImageView setImageWithURL:url placeholderImage:nil];
  
     } else {
         [SVProgressHUD showErrorWithStatus:@"地图数据获取失败"];
     }
  

  } error:^(NSError *error) {

     [SVProgressHUD showErrorWithStatus:@"地图数据获取异常"];

  }];
  }

这样写图片显示不出来，是不是因为下载图片耗时，哪位大神帮忙告知怎么写好

Answer 1

可以看看 SDWebImage 的文档和 Demo。