How to reference a string in strings.xml of an Android library in code?

Question

To reference string foo in strings.xml (in res\values) of an app project, one can simply use

getString(R.string.foo)

getString is a method of Context.

Suppose an Android library has a string foo in its strings.xml. How can it be used in a method of the library?

Edited: It has been suggested to pass a reference of Context to the library method so getString() can be used. Since it is a context of an app's project, there is potential conflict that can be illustrated as following:

Suppose: The library has a string foo with value = "library foo". An app project has a string foo with value = "app foo"

The following code

Log.d("Debug", "App foo ID: " + R.string.foo);  
Log.d("Debug", "App: foo value: " + getString(R.string.foo));

generates:

03-22 05:53:55.590: D/Debug(16719): App foo ID: 2131230723
03-22 05:53:55.590: D/Debug(16719): App foo value: app foo

In a library method, the following code

Log.d("Debug", "Library foo ID: " + R.string.foo); 
Log.d("Debug", "Library foo value: " + context.getString(com.my.library.R.string.foo));

generates:

03-22 05:55:03.680: D/Debug(16719): Library foo ID: 2131230723
03-22 05:55:03.680: D/Debug(16719): Library foo value: app foo

The above shows the ID conflict hence erroneous string value.

Answer 1

//For boolean values
    int resId = context.getResources().getIdentifier("bool_ID", "bool", context.getPackageName());
    if(resId != 0){
       System.out.println(context.getResources().getBoolean(resId));
    }

    //For String values
    int resStringId = context.getResources().getIdentifier("string_ID", "string", context.getPackageName());
    if(resStringId != 0){
        System.out.println(context.getResources().getString(resStringId));
    }