two views with same id

by

The ID is not a unique reference.

However, in practice, you differentiate by using the parent view.

If we consider that ‘this’ is an Activity, set up with a layout that contains your buttons, then:

Button button = (Button) this.findViewById( R.id.id_name );

will return the first one it finds in the layout (I think – not sure the actual behaviour is defined).

However what you might do is call findViewById on some parent view that contains only one such instance with that ID.

LinearLayout okParent = (LinearLayout) this.findViewById( R.id.okLayout );
LinearLayout cancelParent = (LinearLayout) this.findViewById( R.id.cancelLayout );

Button okButton = (Button) okParent.findViewById( R.id.id_name );
Button cancelButton = (Button) cancelParent.findViewById( R.id.id_name );

Conceptually, this is a sort of path based lookup. You should be careful to design your layouts such that this is possible.

More Related Contents:

  1. How to hide a folder programmatically in Android [closed]
  2. Android: Storing username and password?
  3. SearchView In ListView having a custom Adapter
  4. How to change action bar size
  5. How to style PopupMenu?
  6. How to use apply a custom drawable to RadioButton?
  7. Android: wrap_content is not working with ListView
  8. How to keep an alertdialog open after button onclick is fired? [duplicate]
  9. How to analyze memory using android studio
  10. Android – build separate APKs for different processor architectures
  11. HelloAndroid emulator problem
  12. Is it possible to change actionbar tab indicator programmatically
  13. How to send location of the device on server when needed
  14. GCM ‘Error : Not Registered’
  15. Message “error: resource android:attr/lStar not found”
  16. how to get email id from facebook sdk in android applications?
  17. Converting preview frame to bitmap
  18. Android: rotate image without loading it to memory
  19. android/view/view$onUnhandledKeyEventListener (onMeasure error)
  20. GCM Registration ID changed
  21. What is the duration of a Toast LENGTH_LONG and LENGTH_SHORT
  22. What is Android’s file system? [closed]
  23. Create custom lockscreen for android 4.0 or above?
  24. How to set build and version number of Flutter app
  25. How to import RecyclerView for Android L-preview
  26. Android Studio “Project Structure” not coming properly
  27. How to create a completely custom Dialogue/Popup in Android (change overlay colour and dialogue window layout)
  28. How to include suggestions in Android Keyboard
  29. How to obtain MANAGE_EXTERNAL_STORAGE permission
  30. How to detect if device support notch display?

Leave a Comment