Access Activities from modules

[k-x7]

Is there a way to access Activity in modules at app start?

I have an Activity in the module and I want to replace the launcher Activity from the AndroidManifest.xml (replace name with activity inside the module).

using apktool to unpack -> replace launcher name -> repack lead to an error ClassNotFound:

07-17 22:32:22.503 30184 30184 E AndroidRuntime: FATAL EXCEPTION: main
07-17 22:32:22.503 30184 30184 E AndroidRuntime: Process: com.example.app, PID: 30184
07-17 22:32:22.503 30184 30184 E AndroidRuntime: java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.example.app/com.example.module.MainActivity}: java.lang.ClassNotFoundException: Didn't find class "com.example.module.MainActivity" on path: DexPathList[[zip file "/data/user/0/com.example.app/cache/lspatch/origin/3250618975.apk"],nativeLibraryDirectories=[/data/app/~~QNVdXHfsMXxeZDfFbsm9-Q==/com.example.app-wPdAH8IJ-TWqsmiGUrsVHA==/lib/arm64, /data/user/0/com.example.app/cache/lspatch/origin/3250618975.apk!/lib/arm64-v8a, /system/lib64, /system_ext/lib64]]

any help will be appreciated