如何在Xamarin.Forms中修改APK包名（从com.companyname.app5改为com.live.scape.tracker）

Got it, let's walk through how to update your app's package name step by step—this covers all the key places you need to modify in a Xamarin.Forms project:

1. Update Android Manifest via Project Properties #

This is the most direct way to set the new package name:

• Right-click your Android project (not the shared/PCL project) in the Solution Explorer, then select Properties.
• Switch to the Android Manifest tab.
• Locate the Package name field, replace com.companyname.app5 with com.live.scape.tracker, then save the changes.

2. Sync Namespaces in Android Project Files #

While the package name and code namespace don't have to match, it's best practice to keep them aligned to avoid confusion:

• Open core Android files like MainActivity.cs, MainApplication.cs, and any custom Activities/Renderers you've created.
• Update the namespace declaration at the top of each file from your old value (e.g., com.companyname.app5) to com.live.scape.tracker.
• If you have other classes in subfolders, make sure their namespaces are updated too.

3. Check for Hardcoded Package Name References #

Sometimes package names get hardcoded in resource files or configuration:

• Browse through Resources/layout, Resources/values, and other XML resource files. Look for any full class references (like com.companyname.app5.MyCustomView) and replace the old package name with the new one.
• If you're using any third-party libraries that require package name configuration (like Firebase, push notification services), update their setup to use com.live.scape.tracker as well.

4. Clean and Rebuild the Solution #

To ensure all changes take effect:

• Go to the top menu in Visual Studio, select Build → Clean Solution to clear old build artifacts.
• Then select Build → Rebuild Solution to generate new files with the updated package name.
• You can now generate a new APK, and its package name will be com.live.scape.tracker.

Important Notes #

• If your app is already published on Google Play, you cannot change the package name of an existing app listing. You'll have to create a new listing with the new package name instead.
• Double-check any external services (analytics, authentication, etc.) that are tied to your package name—they'll need to be reconfigured to recognize com.live.scape.tracker to work properly.

内容的提问来源于stack exchange，提问作者D V