NSURL请求不会加载PDF

Question

NSString* urlText = @"http://www2.htk.dk/Socialpsykiatrien/menuplan%20værestedet.pdf";
NSString* urlTextEscaped = [urlText stringByAddingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding];
NSURL *url = [NSURL URLWithString: urlTextEscaped];
NSURLRequest *request = [NSURLRequest requestWithURL:url];

这是我的代码。它每次都停在NSURLRequest...看起来它正确加载了网址但我似乎找不到错误

控制台上说的是：（LLDB）

Answer 1

如果您避免百分比转义已经转义的内容，则可以正常工作：

NSString* urlText = @"http://www2.htk.dk/Socialpsykiatrien/menuplan værestedet.pdf";
NSString* urlTextEscaped = [urlText stringByAddingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding];
NSURL *url = [NSURL URLWithString: urlTextEscaped];
NSURLRequest *request = [NSURLRequest requestWithURL:url];

或者，如果此字符串的源中已经埋有%20，则可以取消转义并重新转义它：

NSString* urlText = @"http://www2.htk.dk/Socialpsykiatrien/menuplan%20værestedet.pdf";
NSString* urlTextUnescaped = [urlText stringByReplacingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding];
NSString* urlTextEscaped = [urlTextUnescaped stringByAddingPercentEscapesUsingEncoding:NSISOLatin1StringEncoding];
NSURL *url = [NSURL URLWithString: urlTextEscaped];
NSURLRequest *request = [NSURLRequest requestWithURL:url];