iphone - objective-c : Downloading a PDF file

Question

我正在尝试启用一个按钮以从服务器下载 pdf 文件。(在设备上)我没有成功使用这段代码(为了发布这个问题，我已经更改了地址)你能给我一些建议让它发挥作用吗..？提前致谢。

NSData *pdfData = [[NSData alloc] initWithContentsOfURL:[NSURL     URLWithString:@"http://www.mydomain.com/mypdffile.pdf"]];

//Store the Data locally as PDF File
NSString *resourceDocPath = [[NSString alloc] initWithString:[[[[NSBundle mainBundle]  resourcePath] stringByDeletingLastPathComponent] stringByAppendingPathComponent:@"<Application_Home>/Documents/"]];

NSString *filePath = [resourceDocPath stringByAppendingPathComponent:@"myPDF.pdf"];
[pdfData writeToFile:filePath atomically:YES];

//Now create Request for the file that was saved in your documents folder
NSURL *url = [NSURL fileURLWithPath:filePath];
NSURLRequest *requestObj = [NSURLRequest requestWithURL:url];
[webView setUserInteractionEnabled:YES];
[webView setDelegate:self];
[webView loadRequest:requestObj];

Answer 1

您没有构建正确的 NSURL 对象来访问服务器。 fileURLWithPath: 是一种构建指向文件系统中文件的 URL 的方法。

使用 URLWithString:写入完整的 url，例如“http://myserver.com/myfile.pdf”