如何使用AFNetworking下载文件并存储在文件夹中

Question

我想创建一个从Internet下载任何文件并存储在文件夹中的应用程序.我在谷歌和这个网站搜索,我明白使用AFNetworking更好.在这个框架中,我可以显示progessViewshow下载状态.

我是AFNetworking的新手,我希望你指导我,并告诉我如何使用AFNetworking创建一个下载文件并显示progessView状态下载的应用程序代码.

Answer 1

使用UIProgressview

这里的代码进度是使用的UIProgressview

filepath:保存文件的路径[Documents目录]

进口

#import <AFNetworking/AFNetworking.h>

并下载

progress.progress = 0.0;

currentURL=@"http://www.selab.isti.cnr.it/ws-mate/example.pdf";


NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:currentURL]];
AFURLConnectionOperation *operation =   [[AFHTTPRequestOperation alloc] initWithRequest:request];

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *filePath = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"MY_FILENAME_WITH_EXTENTION.pdf"];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:filePath append:NO];

[operation setDownloadProgressBlock:^(NSInteger bytesRead, NSInteger totalBytesRead, NSInteger totalBytesExpectedToRead) {
    progress.progress = (float)totalBytesRead / totalBytesExpectedToRead;

}];

[operation setCompletionBlock:^{
    NSLog(@"downloadComplete!");

}];
[operation start];