Facing a issue like "Default Activity Not Found" in Android Studio? Solution: In this case, Application build Apk/clean build might be successful. But, we need to check the following basic things to resolve this issue. Go-to the AndroidManifest.xml file and find out Activity which you wish to launch as Main activity. Make sure that the following code is available under <intent-filter> section of Main Activity. <category android:name="android.intent.category.LAUNCHER"/> Sample manifest file: If it is not working after this modification, then please restart the Android Studio(File->Invalidate Caches/Restart). This will resolve your issue. Happy coding!
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