如何在iOS中以文本形式获取两个位置之间的路线

Posted 2023-02-23

【中文标题】如何在iOS中以文本形式获取两个位置之间的路线

【英文标题】：How to get directions between two locations in the form of text in iOS

【发布时间】：2015-03-31 20:41:33

【问题描述】：

我记得有一个 Google API 需要 lat、long 或 from&to 地址，如果我们在 webview 上加载该 url，它会以文本的形式显示两点之间的方向。任何人都可以为我提供获取基于文本的方向的 API。我不想在地图上画线，想显示文字。

【参考方案1】：

MKPlacemark *source = [[MKPlacemark alloc]initWithCoordinate:CLLocationCoordinate2DMake(37.776142, -122.424774) addressDictionary:[NSDictionary dictionaryWithObjectsAndKeys:@"",@"", nil] ];

MKMapItem *srcMapItem = [[MKMapItem alloc]initWithPlacemark:source];
[srcMapItem setName:@""];

MKPlacemark *destination = [[MKPlacemark alloc]initWithCoordinate:CLLocationCoordinate2DMake(37.73787, -122.373962) addressDictionary:[NSDictionary dictionaryWithObjectsAndKeys:@"",@"", nil] ];

MKMapItem *distMapItem = [[MKMapItem alloc]initWithPlacemark:destination];
[distMapItem setName:@""];

MKDirectionsRequest *request = [[MKDirectionsRequest alloc]init];
[request setSource:srcMapItem];
[request setDestination:distMapItem];
[request setTransportType:MKDirectionsTransportTypeAny];

MKDirections *direction = [[MKDirections alloc]initWithRequest:request];

[direction calculateDirectionsWithCompletionHandler:^(MKDirectionsResponse *response, NSError *error) 

    NSLog(@"response = %@",response);
    NSArray *arrRoutes = [response routes];
    [arrRoutes enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) 

        MKRoute *rout = obj;

        MKPolyline *line = [rout polyline];
        [mapview addOverlay:line];
        NSLog(@"Rout Name : %@",rout.name);
        NSLog(@"Total Distance (in Meters) :%f",rout.distance);

        NSArray *steps = [rout steps];

        NSLog(@"Total Steps : %lu",(unsigned long)[steps count]);
        NSMutableArray *stepsArray=[[NSMutableArray alloc] init];
        [steps enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) 
            NSLog(@"Rout Instruction : %@",[obj instructions]);
            NSLog(@"Rout Distance : %f",[obj distance]);
            [stepsArray addObject:[obj instructions]];
        ];

        [self myShowDirections:response];
        self.steps.text=[NSString stringWithFormat:@"%@",stepsArray];

你可以使用它并得到你想要的。