NSString *urlString = [NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%lf,%lf&output=csv&sensor=false&key=swizzlec hops", coordinate.latitude,coordinate.longitude];
NSLog(@"urlString: %@", urlString);
NSURL *urlFromURLString = [NSURL URLWithString:urlString];
我的日志是:http://maps.google.com/maps/geo?q=53.872874,27.527790&output=csv&sensor=false&key=swizzlec hops
我可以将此网址复制并粘贴到浏览器并确定,但是urlFromURLString = nil。但是,为什么?
答案 0 :(得分:3)
尝试
NSString *urlString = [[NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%lf,%lf&output=csv&sensor=false&key=swizzlec hops", coordinate.latitude,coordinate.longitude] stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];
我认为您的网址不能包含空格
答案 1 :(得分:3)
我相信你需要使用
stringByAddingPercentEscapesUsingEncoding:
在将urlString传递给NSURL之前。
NSString *urlString = [[NSString stringWithFormat:@"http://maps.google.com/maps/geo?q=%lf,%lf&output=csv&sensor=false&key=swizzlec hops", coordinate.latitude,coordinate.longitude] stringByAddingPercentEscapesUsingEncoding::NSUTF8StringEncoding];
答案 2 :(得分:0)
这是一种更好的方法:
NSString* escapedUrl = [originalUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSURL *urlFromURLString = [NSURL URLWithString:escapedUrl];