This attempts to work around reports of repeated calls to [CLLocationManager authorizationStatus] blocking the main thread by dispatching it to the background, serial queue that is already available in MGLMapboxEvents. This also adds a guard to the handler for the user defaults change event so that the call to pause or resume if required is done only if a user defaults value changes that would require an update to the pause / resume state. The guard works by utilizing two new state variables that keep track of the previous values for account type and metrics enabled configuration variables. The call to pause/resume is only done if the latest relevant values in the user defaults dictionary are actually different than the previous ones. The default values for the new state variables assume an account value of 0 and metrics enabled == true so there can be a small inefficiency if a user prevously opted out of telemetry, kills the app, and restarts it. In that case, the pause/resume method would get invoked one time when it would not technically need to. This should not be an issue in practice though.
Mapbox GL Native
A library for embedding interactive, customizable vector maps into native applications on multiple platforms. It takes stylesheets that conform to the Mapbox Style Specification, applies them to vector tiles that conform to the Mapbox Vector Tile Specification, and renders them using OpenGL. Mapbox GL JS is the WebGL-based counterpart, designed for use on the Web.
The Mapbox GL ecosystem
This repository hosts the cross-platform Mapbox GL Native library, plus convenient SDKs for several platforms. The cross-platform library comes with a GLFW-based demo application for Ubuntu Linux and macOS. The SDKs target the usual languages on their respective platforms:
| SDK | Languages | Build status |
|---|---|---|
| Mapbox GL Native | C++14 | |
| Mapbox Maps SDK for Android | Java | |
| Mapbox Maps SDK for iOS | Objective-C or Swift | |
| Mapbox Maps SDK for macOS | Objective-C, Swift, or AppleScript | |
| node-mapbox-gl-native | Node.js | |
| Mapbox Qt SDK | C++03 |
Additional Mapbox GL Native–based libraries for hybrid applications are developed outside of this repository:
| Toolkit | Android | iOS | Developer |
|---|---|---|---|
| React Native (npm) | ✅ | ✅ | Mapbox |
| Apache Cordova (npm) | ✅ | ✅ | Telerik |
| NativeScript (npm) | ✅ | ✅ | Telerik |
| Xamarin | ✅ | ✅ | Xamarin |
If your platform or hybrid application framework isn’t listed here, consider embedding Mapbox GL JS using the standard Web capabilities on your platform.