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Explore how to overcome iOS Flutter's `Location Permission` issues, ensuring a smooth user experience with background location requests.
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Resolving Location Permission Challenges in iOS Flutter: Ensuring Always Allow Requests

When developing applications that rely on location services, managing user permissions can sometimes be tricky, especially when it comes to iOS and Flutter. In this guide, we will dissect a common problem encountered by developers: the inability to show a second popup for requesting the Always Allow location permission on iOS devices. By understanding this issue and its solution, you can enhance the functionality of your app significantly.

The Problem

Many developers have faced the challenge of seamless location permission requests in their Flutter applications. This specific case examines a scenario where:

The app requests while in use location permission successfully.

A second request for Always Allow permission fails to trigger a further system popup on iOS devices, leading to issues with background location tracking.

For instance, when testing on an iPhone 6 with iOS 12.5, the user is only presented with Accept and Deny options after the first request, without any opportunity to choose Always Allow. This limitation directly affects the app’s ability to provide background location updates, a critical feature for many applications.

Console Output

From the console output, we can identify key stages in the permission request process:

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Here, it's evident that while the first request goes smoothly, the user is unable to proceed to the second permission request screen, thus hindering the functionality of the application.

The Solution

After attempting multiple methods to resolve this issue without success, it was suggested to utilize the permission_handler plugin instead of the default Geolocator capabilities. This plugin offers more refined control over permission requests, which ultimately solves the problem.

Step-by-Step Implementation

Here's how you can make the switch from relying solely on Geolocator to incorporating permission_handler for better results.

Step 1: Add the permission_handler Dependency

First, ensure you have the permission_handler package added to your pubspec.yaml:

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Step 2: Modify Your Location Permission Logic

You will now create specific methods for checking and requesting each type of permission, separating while in use and always requests.

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Step 3: Handling Status After Request

Make sure to check the results after each permission status request. This way, you provide feedback about possible next steps, such as guiding users to the app settings if they permanently deny permissions.

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Benefits of the permission_handler Plugin

Using permission_handler improves your app's flexibility and user experience in the following ways:

Granular Control: Allows separate handling for requesting while in use and always permissions.

Error Handling: Smoothly manages cases where permissions may be denied or permanently revoked.

User Guidance: Offers clear pathways for users to change their permissions via app settings.

Conclusion

Location permissions are a fundamental aspect of applications that provide location-based services. By addressing the problem of iOS not showing the second permission popup, developers can enhance usability and ensure that essential features—like background location tracking—function seamlessly.

Implementing the permission_handler plugin can significantly improve how your app requests permissions. Whether you're developing for iOS or Android, remember to prioritize user experience through effective permission management.