Скачать или смотреть How to Fix the Black Screen Issue in Your Flutter App on Android

Discover how to resolve the black screen issue in your Flutter app on Android by ensuring the internet connection is properly established. Follow our step-by-step guide for a seamless experience.
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This video is based on the question https://stackoverflow.com/q/72845324/ asked by the user 'Cisco' ( https://stackoverflow.com/u/19471617/ ) and on the answer https://stackoverflow.com/a/72859414/ provided by the user 'Cisco' ( https://stackoverflow.com/u/19471617/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting the Black Screen Issue in Your Flutter App on Android

When developing a Flutter application, encountering a black screen on Android can be a frustrating experience, especially when you believe you've done all the right things. This issue is often indicative of underlying problems, such as failure to connect to the internet or other misconfigurations. In this guide, we'll dive into troubleshooting this issue and offer a comprehensive solution based on a common scenario encountered by developers.

Understanding the Problem

One developer recently faced an issue where their Flutter app worked flawlessly on the emulator but resulted in a black screen on real Android devices. Despite adding permissions in the AndroidManifest.xml and adjusting security rules, the app's data usage remained at 0.00. This situation is not uncommon, and there are specific steps you can follow to remedy it.

Steps to Solve the Black Screen Issue

1. Initialize Flutter Binding

An essential step that many developers overlook is initializing FlutterBinding. This initialization is required for setting up your Flutter app correctly. To do this, modify your main.dart file like so:

[[See Video to Reveal this Text or Code Snippet]]

This line ensures that the Flutter engine is attached to the host environment, enabling proper initialization of plugins and other critical components.

2. Add Google Services Dependencies

To ensure your app integrates seamlessly with Firebase and Google Services, you need to update the project-level build.gradle file to include the necessary dependencies. Here’s how you should edit it:

Open your build.gradle file located in the project level and add the following line:

[[See Video to Reveal this Text or Code Snippet]]

This allows Google Services to work correctly with Firebase in your application.

3. Configure App-Level Build Gradle

Next, go to your app-level build.gradle file and specify that your project should apply the Google Services plugin as follows:

[[See Video to Reveal this Text or Code Snippet]]

By applying this plugin, you are effectively linking your app with services provided by the Firebase backend.

Conclusion

After making these adjustments, the developer found their app functioning correctly without encountering the black screen issue. These steps should help you tackle the same problem efficiently. If you find yourself stuck with a similar issue, just remember to check for proper initialization and the inclusion of necessary dependencies.

With patience and a systematic approach, you can ensure a smoother experience when deploying your Flutter applications on Android. If these tips helped you, or if you have further questions, feel free to share in the comments below!