You might encounter a scenario where the OverrideBackButtonPress method in your Page is not being triggered on Android devices. This can be a frustrating issue, but there’s a straightforward solution that involves modifying your AndroidManifest.xml file.
The predictive back gesture feature in Android can indeed affect how back button presses are handled in your application. Learn more at: https://developer.android.com/guide/navigation/custom-back/predictive-back-gesture
Predictive Back Gesture
Android’s predictive back gesture allows users to preview the destination or action that will occur when they complete a back gesture. In .NET MAUI, the OverrideBackButtonPress method allows you to handle the back button press event in your application. However, if this method is not being called, it could be due to a specific setting in your AndroidManifest.xml file.
Disabling Predictive Back Gesture
To ensure your custom back button handling works as expected, you need to disable the predictive back gesture by setting the android:enableOnBackInvokedCallback attribute to false in your AndroidManifest.xml file. This prevents the system from intercepting the back button press and allows your application to handle it.
<application
android:label="YourAppName"
android:icon="@mipmap/ic_launcher"
android:enableOnBackInvokedCallback="false">
<!-- Other settings -->
</application>
If you are facing issues on macOS, with the retiring Visual Studio for Mac launching your .NET MAUI app, or restoring the packages on it:
error NETSDK1139: The target platform identifier android was not recognized.
error NETSDK1139: The target platform identifier iOS was not recognized.
error NETSDK1139: The target platform identifier MacCatalyst was not recognized.
This error can be also recognized from this toolbar:
Ensure whether you have the correct .NET Workloads installed with the terminal command:
sudo dotnet workload install maui
Check whether you have the latest .NET SDK installed on your machine, from the Microsoft’s official website.
Ensure you have enabled “Use the .NET 8 SDK if installed” in the Visual Studio for Mac’s preferences.
If you are facing issues launching your iOS application in VS Code, then try to analyse the Debug Console of your application. If you see things like this:
And then your application suddenly crashes showing the splashscreen, then the debugger might be slow.
XCode 15 have problems with debugging. If you have “Connect via network” enabled on your XCode settings under Devices and Simulators, than this might be the problem. Even if you are connecting your phone wired, it starts the application debugging via wifi. Try updating XCode to 15.4, and update your OS to macOS Sonoma 15.4 aswell
You can countercheck this problem by disabling the wifi on your physical device. In this case the app installs, but crashes instantly when trying to launch it.
Additionally in Visual Studio code the solution you can disable some settings in the C# extension’s settings the Debug > Logging to speed up the loading progress when launching your app.
In this tutorial, I will guide you through the step-by-step process of publishing .NET MAUI apps using Visual Studio Code and the ‘.NET MAUI – Archive / Publish tool’ extension by me. This extension simplifies the publishing process by providing a user-friendly interface within VS Code.
Without the help of an extension
You will need to dive into a terminal, and give out the following commands, based on which platform you want to build for.
But don’t waste your time. I’ve put together a Visual Studio Code extension for you that will easily save you those unnecessary lines and allow you to publish from the UI.
Step 1: Install VS Code Extension
Visit the VS Code Marketplace and install the ‘.NET MAUI – Archive / Publish tool’ extension by ‘banditoth’.
You might be required to reload your VS Code instance.
Step 2: Open Your .NET MAUI Project
Launch Visual Studio Code and open your .NET MAUI project.
Step 3: Access the Command Palette
Press Ctrl+Shift+P (Windows/Linux) or Cmd+Shift+P (Mac) to open the command palette in Visual Studio Code.
Step 4: Choose Publish Android or Publish iOS
Type ‘MAUI Publish’ in the command palette. You will see two options: ‘MAUI: Publish Android’ and ‘MAUI: Publish iOS’. Select the one that corresponds to your target platform.
Publishing for Android:
The extension will prompt you to choose between a signed or non-signed binary. Select your preferred option.
Next, choose the package format – either apk (Android Package) or aab (Android App Bundle).
If signing is required (for a signed binary), the extension will list all installed keystore files. Choose the appropriate keystore.
Enter the keystore password when prompted.
The extension will start the publishing process, and you’ll see progress information directly in the VS Code output.
Publishing for iOS:
Select ‘MAUI: Publish iOS’ from the command palette.
The extension will ask for the code signing identity. Choose the desired code signing identity from the available options.
Next, choose a provisioning profile to sign the app.
The extension will initiate the publishing process for iOS, displaying progress information in the VS Code output.
Conclusion
With the ‘.NET MAUI – Archive / Publish tool’ extension, publishing your .NET MAUI apps for Android and iOS becomes a straightforward process within Visual Studio Code. You no longer need to manually execute complex CLI commands; instead, you can leverage the extension’s user-friendly interface for a seamless publishing experience. Enjoy the convenience and efficiency of this simplified workflow for your .NET MAUI projects!
This content has 8 months. Some of the information in this post may be out of date or no longer work. Please, read this page keeping its age in your mind.
