从iPhone打开谷歌地图并显示路线 [英] Open Google Maps from iPhone and show route

问题描述

我想知道如何从我的iphone应用程序打开Goog​​le地图，以便Google地图在您到达网页时显示路线？

I was wondering how I can open Google Maps from my iphone app so that Google Maps shows the route when you arrive at the web page?

今天我使用代码仅显示坐标。

Today I use code that only shows the coordinate.

        NSString *latlong = [NSString stringWithString: @"59.33267,18.07361"];
        NSURL *url = [[[NSURL alloc] initWithString:[NSString stringWithFormat: @"http://maps.google.com/maps?ll=%@", [latlong stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding] ]] autorelease];
        [[UIApplication sharedApplication] openURL:url];

推荐答案

对url使用以下格式（必须同时指定两者）路线起点和终点）：

Use the following format for url (you must specify both route start and endpoint):

"http://maps.google.com/maps?daddr=%f,%f&saddr=%f,%f"

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