How to change method behaviour through reflection?

by

Sounds like a weird requirement…

Anyway, reflection does not allow you to change code behaviour, it can only explore current code, invoke methods and constuctors, change fields values, that kind of things.

If you want to actually change the behaviour of a method you would have to use a bytecode manipulation library such as ASM. But this will not be very easy, probably not a good idea…

Patterns that might help you :

  • If the class is not final and you can modify the clients, extend the existing class and overload the method, with your desired behaviour. Edit : that would work only if the method were not static !
  • Aspect programming : add interceptors to the method using AspectJ

Anyway, the most logical thing to do would be to find a way to modify the existing class, work-arounds will just make your code more complicated and harder to maintain.

Good luck.

More Related Contents:

  1. Singletons vs. Application Context in Android?
  2. MVC pattern on Android
  3. Parcelable and inheritance in Android
  4. Why am I getting a force close? [closed]
  5. What is the most appropriate way to store user settings in Android application
  6. How to change the decimal separator of DecimalFormat from comma to dot/point?
  7. Simple export and import of a SQLite database on Android
  8. Marker Interfaces in Java?
  9. Why do we need immutable class?
  10. Failed to resolve: com.google.firebase:firebase-core:16.0.1
  11. java.lang.IllegalMonitorStateException: object not locked by thread before wait()?
  12. Replacing if else statement with pattern
  13. Android Studio cannot resolve symbol but code executes correctly
  14. Using custom font in android TextView using xml
  15. How to set menu to Toolbar in Android
  16. Creating an Arraylist of Objects
  17. Driver JDBC PostgreSQL with Android [duplicate]
  18. Using HttpClient and HttpPost in Android with post parameters
  19. Should I strictly avoid using enums on Android?
  20. Reusing views in Android Listview with 2 different layouts
  21. How to read data from XLS (Excel) file [Java, Android]
  22. How to exit an Android app programmatically?
  23. Android Proguard Javascript Interface Fail
  24. What is the best way to declare on UI component in android with Kotlin?
  25. What is the difference between a Singleton pattern and a static class in Java? [duplicate]
  26. java.lang.IllegalStateException: Only fullscreen opaque activities can request orientation
  27. How to show a notification without a sound java
  28. Android WebView File Upload
  29. Java Static Variable becomes null [duplicate]
  30. Law of Demeter with data model objects

Leave a Comment