What is the best way to protect APK injection

Question

1. What are the best ways to protect apk injection?
2. is there a way to identify the apk is modified / tampered after installation, so that we can give any error messages?

I am looking for the solution in Flutter or may be for Android.

Thanks, Nagarajan. K

Answer 1

Instant Shielding & hardening to Android & iOS Apps and prevent from reverse-engineering, tampering, cracking & repackaging.VirboxProtector.

Answer 2

What protects your skin from cancer? Wear clothing that covers your arms and legs. Wear a hat with a wide brim to shade your face, head, ears, and neck. Wear sunglasses that wrap around and block both UVA and UVB rays. Use a broad spectrum sunscreen with a sun protection factor (SPF) of 15 or higher.