/*

• qq:712641411
• iOS大神qq群:460122071 */

目前封装最好使用最简单的文件下载第三方iOS网络下载库

具体使用方式请下载demo阅读里面很详细

运行效果

Use Example

//开始下载文件代码片段  BOOL            _isDownload;  //保存下载文件路径  NSString      * _filePath = [NSString stringWithFormat:@"%@/Library/Caches/WHCFiles/",NSHomeDirectory()];   //自定义存储下载文件名  NSString      * _fileName = @"吴海超下载测试文件.mp4";  //当前下载对象  WHC_Download  * _download = [WHCDownloadCenter startDownloadWithURL:url                                                              savePath:_filePath                                                           savefileName:_fileName                                                              delegate:self];    //下载代理实现  #pragma mark - WHCDownloadDelegate  //得到第一响应  - (void)WHCDownload:(WHC_Download *)download didReceiveResponse:(NSURLResponse *)response{      NSLog(@"下载开始");  }    //接受下载数据处理下载显示进度以及下载速度  - (void)WHCDownload:(WHC_Download *)download didReceivedLen:(uint64_t)receivedLen totalLen:(uint64_t)totalLen networkSpeed:(NSString *)networkSpeed{      CGFloat  percent = (CGFloat)receivedLen / totalLen * 100.0;      _percentLab.text = [NSString stringWithFormat:@"%.1f%%",percent];  //显示下载百分比      _downProgressV.progress = percent / 100.0;                         //显示下载进度      //显示下载文件大小      _curDownloadSizeLab.text = [NSString stringWithFormat:@"%.1fMB/%.1fMB",((CGFloat)receivedLen / 1024.0) / 1024.0 ,((CGFloat)totalLen / 1024.0) / 1024.0];      _downloadSpeedLab.text = networkSpeed; //显示当前下载速度  }    //下载出错处理  - (void)WHCDownload:(WHC_Download *)download error:(NSError *)error{      if(error){          NSString  * strError = error.description;          switch (error.code) {              case GeneralErrorInfo:                  NSLog(@"一般出错");              break;              case NetWorkErrorInfo:                  NSLog(@"网络错误");              break;              case FreeDiskSpaceLack:                  NSLog(@"磁盘剩余空间不足");              break;              default:              break;          }          UIAlertView  * alert = [[UIAlertView alloc]initWithTitle:@"下载出错误" message:strError delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];          [alert show];      }      _isDownload = NO;  }    //下载结束处理  - (void)WHCDownload:(WHC_Download *)download filePath:(NSString *)filePath isSuccess:(BOOL)success{      NSLog(@"filePath = %@",filePath);      if(success){          UIAlertView  * alert = [[UIAlertView alloc]initWithTitle:@"阿超已经帮你下载完成" message:nil delegate:nil cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];          [alert show];      }      _isDownload = NO;  }

项目主页：http://www.open-open.com/lib/view/home/1438147065035