Android - getIdentifier always returns 0 (library +application)

Question

I have Android project (com.appocaliptic.quizknife.app) which uses Android library (com.appocaliptic.quizknife.core).

What I am trying to do, is to get resource id of the picture which is the library. Path to the image is: res/drawable-xhdpi/fr_200_133.png

However, all tries with getIdentifier result 0. Where is the problem?

resId = getResources().getIdentifier("fr_200_133", "drawable", "com.appocaliptic.quizknife.core");
resId = getResources().getIdentifier("com.appocaliptic.quizknife.core:drawable/"+"fr_200_133", null, null);
resId = getResources().getIdentifier("drawable/fr_200_133", null, "com.appocaliptic.quizknife.core");

Edited:

Ach, and in R.java there is drawable and corensponding attribute.

Answer 1

I faced the same problem: "getIdentifier result 0" and i solved it by removing image extension (*.jpg, *.jpeg,... etc) to be match the name as it in R.java file

Answer 2

You should not be using the library package name. Try this instead:

resId = getResources().getIdentifier("fr_200_133", "drawable", getPackageName());

(or getContext().getPackageName() if this is executing in a view).

The key is that you need to use the app's package name (as listed in the manifest) rather than the library's package name (which actually disappears when creating the app).