Android-getIdentifier始终返回0(库+应用程序) [英] Android - getIdentifier always returns 0 (library +application)

问题描述

我有一个使用Android库(com.appocaliptic.quizknife.core)的Android项目(com.appocaliptic.quizknife.app).

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

我想做的是获取图片的资源ID(即库).图像的路径为: res/drawable-xhdpi/fr_200_133.png

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

但是，所有尝试使用getIdentifier的结果均为0.问题出在哪里?

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");

Ach，并且在R.java中有drawable和corensponding属性.

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

推荐答案

您不应使用库包名称.尝试以下方法:

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

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

(如果在视图中执行，则为 getContext().getPackageName()).

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

关键是您需要使用应用程序的软件包名称(如清单中所示)，而不是库的软件包名称(在创建应用程序时实际上会消失).

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).

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