Maui Project Unable to instantiate activity ComponentInfo

General
1 
Java.Lang.RuntimeException: 'Unable to instantiate activity ComponentInfo{TCRM_Service.TCRM_Service/TCRM_Service.MainActivity}: '
java.lang.ClassNotFoundException: 'Didn't find class "TCRM_Service.MainActivity" on path: DexPathList
[
    [zip file "/data/app/~~C_BfwTgdTmI7Q2CVHS4Avw==/TCRM_Service.TCRM_Service-IWq-WarhbPCJ22s36wnDpw==/base.apk"],
    nativeLibraryDirectories=
    [
        /data/app/~~C_BfwTgdTmI7Q2CVHS4Avw==/TCRM_Service.TCRM_Service-IWq-WarhbPCJ22s36wnDpw==/lib/x86_64,
        /data/app/~~C_BfwTgdTmI7Q2CVHS4Avw==/TCRM_Service.TCRM_Service-IWq-WarhbPCJ22s36wnDpw==/base.apk!/lib/x86_64, 
        /system/lib64, 
        /system_ext/lib64
    ]
]

I am trying to get my app onto the google play store and keep running into this issue…

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="TCRM_Service" android:versionCode="1" android:versionName="1.0">
    <application android:allowBackup="true" android:icon="@mipmap/appicon" android:label="TCRM_Service">
        <activity android:name="TCRM_Service.MainActivity" android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.CAMERA" />
</manifest>

using Android.App;
using Android.Content.PM;
using Android.OS;

namespace TCRM_Service;

[Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
public class MainActivity : MauiAppCompatActivity
{
    protected override void OnCreate(Bundle savedInstanceState)
    {
        base.OnCreate(savedInstanceState);
    }
}

I’ve tried renaming packages, using the onCreate feature, nothing worked.

2

The error message “Unable to instantiate activity ComponentInfo” confirms your suspicion that the Android system can’t find your MainActivity class. Here’s a breakdown of the issue and steps to troubleshoot it based on the information you provided:

Error Analysis:

  • The class name (TCRM_Service.MainActivity ) in the AndroidManifest.xml doesn’t match the actual class definition.
  • There could be a mismatch between the package name and the namespace in your C# code.

Troubleshooting Steps:

  1. Namespace and Package Name Match:
  • Ensure the namespace in your MainActivity.cs file exactly matches the package name declared in AndroidManifest.xml .
  • Example:
    • If your package name is TCRM_Service , your namespace in C# should be TCRM_Service .
  1. File Path Verification:
  • Verify that the MainActivity.cs file resides in the correct folder that aligns with the package name.
  • Example:
    • If your package is TCRM_Service , the MainActivity.cs file should be located in a folder named TCRM_Service within your project structure.
  1. Clean and Rebuild:
  • Try cleaning and rebuilding your project in your development environment (e.g., Visual Studio, Visual Studio for Mac) to ensure all files are compiled correctly. This can sometimes resolve compilation errors.
  1. AndroidManifest.xml Configuration:
  • Double-check the <activity> tag in AndroidManifest.xml . Ensure the android:name attribute accurately points to your MainActivity class path:

XML

<activity
    android:name="TCRM_Service.MainActivity"  android:exported="true">
    </activity>

Debug with Logcat:

  • If the issue persists, use the Android Debug Bridge (ADB) tool and access Logcat to view any detailed error messages related to your MainActivity class during the launch process. This might provide further clues about the problem.