Question

正如标题所述，我想通过按下按钮在我自己的应用程序中打开ios设备中的本机地图应用程序。目前我使用MKmapview显示一个简单的引脚，其中lat / long取自json文件。

代码是这样的：

- (void)viewDidLoad {
    [super viewDidLoad]; 
}


// We are delegate for map view
self.mapView.delegate = self;

// Set title
self.title = self.location.title;

// set texts...
self.placeLabel.text = self.location.place;


self.telephoneLabel.text = self.location.telephone;
self.urlLabel.text = self.location.url;


**// Make a map annotation for a pin from the longitude/latitude points
MapAnnotation *mapPoint = [[MapAnnotation alloc] init];
mapPoint.coordinate = CLLocationCoordinate2DMake([self.location.latitude doubleValue], [self.location.longitude doubleValue]);
mapPoint.title = self.location.title;**

// Add it to the map view
[self.mapView addAnnotation:mapPoint];

// Zoom to a region around the pin
MKCoordinateRegion region = MKCoordinateRegionMakeWithDistance(mapPoint.coordinate, 500, 500);
[self.mapView setRegion:region];

}`

当您触摸图钉时，会出现一个信息框，其中包含标题和信息按钮。

这是代码：

    #pragma mark - MKMapViewDelegate

- (MKAnnotationView *)mapView:(MKMapView *)mapView viewForAnnotation:(id<MKAnnotation>)annotation {
    MKPinAnnotationView *view = nil;
    static NSString *reuseIdentifier = @"MapAnnotation";

    // Return a MKPinAnnotationView with a simple accessory button
    view = (MKPinAnnotationView *)[mapView dequeueReusableAnnotationViewWithIdentifier:reuseIdentifier];
    if(!view) {
        view = [[MKPinAnnotationView alloc] initWithAnnotation:annotation reuseIdentifier:reuseIdentifier];
        view.rightCalloutAccessoryView = [UIButton buttonWithType:UIButtonTypeDetailDisclosure];
        view.canShowCallout = YES;
        view.animatesDrop = YES;
    }

    return view;
}

当我点击上面信息框中的按钮时，我想创建一个方法，打开地图应用，其中包含从当前用户位置到上面mapPoint的路线。那可能吗？我也可以自定义这个按钮的外观吗？（我的意思是喜欢在按钮上放置一个不同的图像，使其看起来像“按我指示方向”）。

很抱歉，如果这是一个愚蠢的问题，但这是我的第一个ios应用程序，Obj-c对我来说是一种全新的语言。

提前感谢所有回复。

Answer 1

您初始化按钮并向按钮添加操作：

Objective-C代码

NSString* directionsURL = [NSString stringWithFormat:@"http://maps.apple.com/?saddr=%f,%f&daddr=%f,%f",self.mapView.userLocation.coordinate.latitude, self.mapView.userLocation.coordinate.longitude, mapPoint.coordinate.latitude, mapPoint.coordinate.longitude];
if ([[UIApplication sharedApplication] respondsToSelector:@selector(openURL:options:completionHandler:)]) {
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString: directionsURL] options:@{} completionHandler:^(BOOL success) {}];
} else {
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString: directionsURL]];
}

带有mapPoint的

是你想要前往的地方。

Swift3或更高版本

let directionsURL = "http://maps.apple.com/?saddr=35.6813023,139.7640529&daddr=35.4657901,139.6201192"
guard let url = URL(string: directionsURL) else {
    return
}
if #available(iOS 10.0, *) {
    UIApplication.shared.open(url, options: [:], completionHandler: nil)
} else {
    UIApplication.shared.openURL(url)
}

请注意，saddr，daddr可以是位置名称或位置坐标。所以directionsURL可以是：

// directions with location coordinate
"http://maps.apple.com/?saddr=35.6813023,139.7640529&daddr=35.4657901,139.6201192"
// or directions with location name
"http://maps.apple.com/?saddr=Tokyo&daddr=Yokohama"
// or directions from current location to destination location
"http://maps.apple.com/?saddr=Current%20Location&daddr=Yokohama"

更多选项参数（如传输类型，地图类型......）请查看here

Answer 2

您可以使用以下代码打开带方向的地图:(假设您的id＆lt; MKAnnotation＆gt;类具有名为“coordinate”的CLLocationCoordinate2D公共属性）

MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:[annotation coordinate] addressDictionary:nil];
MKMapItem *mapItem = [[MKMapItem alloc] initWithPlacemark:placemark];
[mapItem setName:"WhereIWantToGo"]];
NSDictionary *options = @{MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving};
[mapItem openInMapsWithLaunchOptions:options];

您也可以更改按钮，实际上您使用的是标准样式按钮：

[UIButton buttonWithType:UIButtonTypeDetailDisclosure];

但您可以使用图片或标签分配自定义按钮：

[[UIButton alloc] initWithImage:[UIImage imageNamed:"directionIcon.png"]];

Answer 3

以下是在Apple地图上显示路线的工作代码。它适用于您目的地的当前位置，您只需要通过lat＆amp; amp;目的地长。

double destinationLatitude, destinationLongitude;
destinationLatitude=// Latitude of destination place.
destinationLongitude=// Longitude of destination place.

Class mapItemClass = [MKMapItem class];

if (mapItemClass && [mapItemClass respondsToSelector:@selector(openMapsWithItems:launchOptions:)])
{
    // Create an MKMapItem to pass to the Maps app
    CLLocationCoordinate2D coordinate = CLLocationCoordinate2DMake(destinationLatitude,destinationLongitude);
    MKPlacemark *placemark = [[MKPlacemark alloc] initWithCoordinate:coordinate addressDictionary:nil];

    MKMapItem *mapItem = [[MKMapItem alloc] initWithPlacemark:placemark];
    [mapItem setName:@"Name/text on destination annotation pin"];

    // Set the directions mode to "Driving"
    // Can use MKLaunchOptionsDirectionsModeDriving instead
    NSDictionary *launchOptions = @{MKLaunchOptionsDirectionsModeKey : MKLaunchOptionsDirectionsModeDriving};

    // Get the "Current User Location" MKMapItem
    MKMapItem *currentLocationMapItem = [MKMapItem mapItemForCurrentLocation];

    // Pass the current location and destination map items to the Maps app
    // Set the direction mode in the launchOptions dictionary
    [MKMapItem openMapsWithItems:@[currentLocationMapItem, mapItem] launchOptions:launchOptions];
}

此外，如果发现任何问题或者我们需要找到另一种方法，请与我分享。

从ios应用程序打开带有路线的苹果地图应用程序

3 个答案: