Swift mapkit annotation

MapKit is a powerful API available on iOS devices that makes it easy to display maps, mark locations, enhance with custom data and even draw routes or other shapes on top. To get started, download the starter project using the Download Materials button at the top or bottom of this tutorial.

Open Main. Constrain the Map View to the super view not the Safe Areasetting 0 on all edges, so it stretches throughout the Safe Area of notched devices.

Build and run. You now have a fully zoomable and panable map showing the continent of your current location using Apple Maps! And to do that, you need to get coding! Open ViewController. Go back to ViewController.

When telling the map what to display, giving latitude and longitude is enough to center the map.

MapKit Tutorial: Overlay Views

But, you must also specify the rectangular region to display to get a correct zoom level. The location argument is the center point. The region will have north-south and east-west spans based on a distance of regionRadiuswhich has a default of meters, a little more than half a mile, which works well for plotting the public artwork data in the GeoJSON file.

The map view automatically transitions the current view to the desired region with a neat zoom animation, with no extra code required! MapKit is capable of constraining the user to pan and zoom the map over a specified area.

You can only pan the map view to see the northern, southern, eastern and westernmost edges of the island.

swift mapkit annotation

MapKit uses an internal camera to determine where the point of view for the map is, how expansive the field of view is and to animate view movement.

When you specify a camera boundary with a center and a region rectangle, the camera center always stays within this region. It keeps them focused on the area you want them to see. A region size of 60, meters wide by 50, meters high keeps Oahu nicely constrained within the map view. The MapKit view camera keeps track of its distance from the view center when zooming in and out.

Setting the camera zoom range maximum center distance constraint limits how far the view zooms out and how tiny the island of Oahu becomes. This is even more helpful when adding points of interest to the map, which is the next step! The next step is to plot interesting data around the current location.

But where in the world can you get such stuff? Well, it depends on your current location. Honolulu, like many cities, has an Open Data Portal to improve public access to government data.

To get a feeling for the items in this dataset, open PublicArt. Each one of these objects contains some standard keys, but also a properties dictionary with some custom fields created by the data portal. The essential parts are the properties dictionary and the coordinates. Some useful tools include geojson. In PublicArt. To show this on the map view, you must create a map annotation.

Map annotations are small pieces of information tied to a particular location. To create your annotations, you create a class that conforms to MKAnnotationadd the annotation to the map and tell the map how the annotation should be displayed.

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Choose Swift File and name your new file Artwork. Open Artwork. MKAnnotation requires the coordinate property. If you want your annotation view to display a title and subtitle when the user taps a marker, your class also needs properties named title and subtitle. To conform to MKAnnotationyou make subtitle a computed property that returns locationName.Adding a map to an iOS app is a widely spread feature. Maps make mobile apps more interactive and improve the user experience tremendously.

In our mobile app templateswe integrated maps in several apps, such as in the Store LocatorClassifieds Appor Real Estate app.

In this MapKit tutorialwe are describing our experience of working with MapKit to help you learn how to add maps to your iOS app in Swift. Have you ever wanted to build a map in your phone application? Does it seem too difficult of a task? If so, then this article is for you. Today, we will talk about MapKit. So, what exactly is MapKit? This class has all the features needed, such as map, satellite, or even the current location.

Hand gestures may be used on the screen to change the geographical region. We can also add annotationsphotostitles and mark specific locations on the map. Another great thing is that we can receive notifications such as changing the current location of the user or region of the map, through MKMapViewDelegate protocol. Normally, we would have a starter project for you. Hopefully this will be an additional incentive for the readers to follow through. You can pin it to the edges of the screen or the safe area if you refer to this onefor simplicity by using auto layout constraints, of course.

Do not forget to import the MapKit library, so that the code compiles successfully. It looks like this:. BOOM, it looks awesome, right? MapKit has provided us with the map and now all we need to do is observe and handle the different events such as changing the current location or region etc. Of course, if you do not do that, your application still works and the map still displays normally. But you have to do that because location information is one of the private information belonging to users.

We have to ask their permissions before getting it. If you fail to acquire permissions first, you risk your app to crash. In the description part, you have to explain to the user why you need their permissions. Step 3 : Check the Location Service. The locationServicesEnabled function is used to check whether a user has turned on their location service or not shown in Settings on iPhones.

If they have, we can continue to implement our code. Otherwise, we need to do something to let users know why they need to turn it on like sending a pop-up to inform the user. There are five cases that we need to handle:. For the two remaining cases, you will need to send the user a notification depending on the situation, such as the user not giving permission for showing their location.

In this article, we will not focus on these cases, however, when you are working on the actual project you will also need to handle these. They are just as important as the first two. So, just keep going — we will write this line of Swift code:.

This code will show the current location of the user. In conclusion, all lines of code look like this:. BOOM, it showed the current location. Keep in mind that you can simulate any location in the iOS Simulator.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

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Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. New coder, trying to figure out how to use MapKit. The goal is to create a map that users can add pins to using their address.

However, the step I am at now, I am having trouble figuring out how to add pins to the map at all. How can I add a pin to the map? I have been struggling to figure out how to use annotations thus far. This is the only place I can see where you have a coordinate if all else fails, just add the coordinate search on Google if you need to know how to create a coordinate and set it equal to the "annotation. Learn more.

Asked 3 years, 5 months ago.

MapKit Tutorial: How to Add Maps to Your iOS App in Swift

Active 1 year, 3 months ago. Viewed 41k times. Colin Barrett 4, 1 1 gold badge 22 22 silver badges 32 32 bronze badges. Active Oldest Votes. Mislav Javor Mislav Javor 1, 1 1 gold badge 14 14 silver badges 21 21 bronze badges.

swift mapkit annotation

Mislav, thanks for the help! This is exactly what I needed. They don't show up because of this: stackoverflow.Maps are becoming increasingly popular in apps as time goes on. You can see maps in all kinds of apps, from Uber to Instagram to my new app, peek. Although maps are common, adding more complex features to them can be a challenging process. MapKit is a powerful, tried and tested mapping library. To get started, download the sample project.

Before we can build and run our app, we have to do one more thing: embed MapKit. This is a mandate for using MapKit. You have two ways to do this.

One way is to manually add the library. Click on MapKit starter in the project navigator. Click the plus icon and add MapKit. Alternatively, you can go to the Capabilities tab and switch the Maps option to ON.

Build and run the app and see what happens!

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You should see an MKMapView taking up the whole screen. By default, this map view supports zooming, rotating, scrolling, and 3D mode.

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It also shows points of interest where applicable and displays buildings in 3D in major cities. Cool stuff! Luckily, this is pretty easy with MapKit. Open the Storyboard, select our map, and check the box that says User Location :.

swift mapkit annotation

In case you want to do it programmatically, just place this line of code in the viewDidLoad method of ViewController :. We need to take a few more steps before this works. Open ViewController.Annotate a map with location-specific data using default and customized annotation views and callouts.

This sample code project demonstrates how to display a map with custom annotations, each with a customized callout provided by its MKAnnotation View. In addition, the Map Callouts sample project shows how you can extend annotations with custom views, strings, and callout accessory views using MKAnnotation and MKAnnotation View.

Annotations offer a way to highlight specific coordinates on a map and provide additional information. You can use annotations to call out addresses, points of interest, and particular destinations. To display an annotation on a map, your app must provide two distinct objects: an annotation object and an annotation view. An annotation object conforms to the MKAnnotation protocol and manages the data for the annotation, such as the coordinatetitleand subtitle properties as shown in this section of the sample code.

Derived from the MKAnnotation View class, an annotation view draws the visual representation of the annotation on the map surface. Register annotation views with the MKMap View so the map view can create and efficiently reuse them.

Use a default annotation view if you need to customize the content with a callout, or change the default marker.

swift mapkit annotation

Use a custom annotation view if you want to have a completely custom view appear for the annotation. When an annotation comes into view, the map view asks the MKMap View Delegate to provide the appropriate annotation view. Before returning from the delegate call providing the annotation view, you configure the annotation view with any customizations required for the annotation.

For example, use a flag icon for an annotation view representing San Francisco. A callout is a standard or custom view that can appear with an annotation view. Callouts can also include images, such as the detail Callout Accessory View :.

Language: Swift Objective-C. SDKs iOS Framework Map Kit. Overview This sample code project demonstrates how to display a map with custom annotations, each with a customized callout provided by its MKAnnotation View.

A callout can be customized in multiple ways. See Also Point-Based Location.By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service. The dark mode beta is finally here. Change your preferences any time.

Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. In your case annotation is not an MKPointAnnotation type. And I can not see mapView. But if you assign it via storyboard thats fine otherwise add it in viewDidLoad method. You have the first step done by setting the isDraggable property to true. Now you only need to handle when the user stops dragging and drops the annotation, see: how to manage drag and drop for MKAnnotationView on IOS.

From Apple documentation :. Marking Your Annotation View as Draggable Annotation views provide built-in dragging support, which makes it very easy to drag annotations around the map and to ensure that the annotation data is updated accordingly. To implement minimal support for dragging:. When creating your annotation view, set its draggable property to YES. When the user touches and holds a draggable annotation view, the map view begins a drag operation for it.

As the drag operation progresses, the map view calls the mapView:annotationView:didChangeDragState:fromOldState: method of its delegate to notify it of changes to the drag state of your view. You can use this method to affect or respond to the drag operation.

To animate your view during a drag operation, implement a custom dragState method in your annotation view. As the map view processes drag-related touch events, it updates the dragState property of the affected annotation view.

Implementing a custom dragState method gives you a chance to intercept these changes and perform additional actions, such as animating the appearance of your view. For example, the MKPinAnnotationView class raises the pin off the map when a drag operation starts and drops the pin back down on the map when it ends. Learn more. Asked 2 years, 9 months ago. Active 2 years, 9 months ago.

Viewed times. Active Oldest Votes. Dharmesh Kheni Dharmesh Kheni Happy to help you. Updating view. Nena yesterday.An annotation represents data that you want to display on the map's surface.

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Each annotation is associated with a coordinate on the map. It is rare that you'll need to create a mapkit. Annotation object; use the more common extended objects, mapkit. Marker Annotation and mapkit. Image Annotationinstead. Use mapkit. Annotation when you need to customize a view in a way that can't be accomplished with mapkit. Image Annotation. In this example, we create a custom annotation to show a person on the map using their initials.

The initials are enclosed in a gray circle, which we style using the following CSS:. Class mapkit. The base annotation object, used for creating custom annotations. Framework Map Kit JS. Declaration interface mapkit. Coordinate Annotation person. Topics Creating an Annotation. Annotation Creates a new annotation given its location and initialization options. Annotation Constructor Options An object that contains options for initializing annotation features.

Collision Mode Constants indicating how to interpret the collision frame rectangle of an annotation view. Display Priority Constant values used to provide a hint the map uses to prioritize displaying annotations. Getting and Setting the Coordinate. Getting the Map and Element.

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