google-maps - 在 iOS 5 中使用当前位置和方向打开地图应用程序

Question

嗨，我尝试使用它打开具有当前位置的地图应用程序，并获取我为方向输入的任何内容的方向。当我单击 iPhone 上的按钮时，没有任何反应，但它被单击了。我究竟做错了什么？

NSString *url = [NSString stringWithFormat: @"http://maps.google.com/maps?saddr=Current+Location&daddr=%@ %@ %@ %@",
                     streetString , cityString, stateString, zipString];
    [[UIApplication sharedApplication] openURL: [NSURL URLWithString: url]];

Answer 1

Make sure you're escaping the the NSString using stringByAddingPercentEscapesUsingEncoding

NSString *url = [NSString stringWithFormat: @"http://maps.google.com/mapssaddr=Current+Location&daddr=%@ %@ %@ %@", streetString , cityString, stateString, zipString];
url = [url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
[[UIApplication sharedApplication] openURL: [NSURL URLWithString: url]];