Flutter: how to prevent device orientation changes and force portrait?

Flutter: How to Prevent Device Orientation Changes and Force Portrait

Are you tired of your Flutter application constantly switching its orientation? Do you want to force your layout to stick to portrait mode? You've come to the right place! In this blog post, we'll address the common issue of unwanted device orientation changes and provide you with easy solutions to prevent them. Let's dive in!

The Problem

Imagine this: you've developed a beautiful Flutter application that looks stunning in portrait mode. However, as soon as you rotate your device, everything gets messed up. Frustrating, right? Don't worry, we've got your back.

The Solution

To prevent device orientation changes and force your layout to stay in portrait mode, you can use the SystemChrome class provided by Flutter. Let's walk through the steps.

1. Open your main.dart file.

2. Import package:flutter/services.dart at the top of the file to have access to the SystemChrome class.

3. Inside the main function, use the SystemChrome.setPreferredOrientations method to define your preferred orientations. By passing a list of DeviceOrientation.portraitUp and DeviceOrientation.portraitDown, you ensure that your application stays in portrait mode.

   import 'package:flutter/services.dart'; void main() { SystemChrome.setPreferredOrientations([ DeviceOrientation.portraitUp, DeviceOrientation.portraitDown, ]); runApp(MyApp()); }

4. Save the file and run your application.

Testing The Solution

Now that you've implemented the solution, it's time to test it out. To simulate device orientation changes, we'll use the Android emulator rotate buttons in this example.

1. Launch your application on an Android device emulator.

2. Locate the rotate buttons on the emulator toolbar.

3. Click on the rotate buttons to change the device orientation.

   🔄 Rotate the device to landscape mode.

Congratulations! Your application stubbornly stayed in portrait mode, just like you wanted. No more layout issues caused by unwanted device orientation changes.

Final Thoughts

In this blog post, we discussed how to prevent device orientation changes and force your Flutter application to stay in portrait mode. By using the SystemChrome class and setting the preferred orientations, you can ensure that your layout remains intact. Say goodbye to jumbled screens when rotating your device!

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