Access to <declared> resources programmatically

Question

I have one question where I could not find any help:

Is it possible for resource identifiers to be stored as a int [] programmatically without reference to the resource class R?

 <declare-styleable name="com_facebook_login_view"> <attr name="confirm_logout" format="boolean"/> <attr name="fetch_user_info" format="boolean"/> <attr name="login_text" format="string"/> <attr name="logout_text" format="string"/> </declare-styleable> 

The problem is that I cannot resolve the identifier of a certain attribute declare-styleable. 0x00 always returns:

 int id = context.getResources().getIdentifier( "com_facebook_login_view", "declare-styleable", context.getPackageName() ); int[] resourceIDs = context.getResources().getIntArray( id ); 

Any idea would be greatly appreciated! :)

Thanks in advance!

Christopher

Answer 1

Here is a solution that programmatically implements resource identifiers for child tags defined for a tag:

 /********************************************************************************* * Returns the resource-IDs for all attributes specified in the * given <declare-styleable>-resource tag as an int array. * * @param context The current application context. * @param name The name of the <declare-styleable>-resource-tag to pick. * @return All resource-IDs of the child-attributes for the given * <declare-styleable>-resource or <code>null</code> if * this tag could not be found or an error occured. *********************************************************************************/ public static final int[] getResourceDeclareStyleableIntArray( Context context, String name ) { try { //use reflection to access the resource class Field[] fields2 = Class.forName( context.getPackageName() + ".R$styleable" ).getFields(); //browse all fields for ( Field f : fields2 ) { //pick matching field if ( f.getName().equals( name ) ) { //return as int array int[] ret = (int[])f.get( null ); return ret; } } } catch ( Throwable t ) { } return null; } 

Maybe this can help someone once. :)

Hi

Christopher

Answer 2

Somewhat more efficient solution:

 public static final int[] getResourceDeclareStyleableIntArray(String name) { Field[] allFields = R.styleable.class.getFields(); for (Field field : allFields) { if (name.equals(field.getName())) { try { return (int[]) field.get(R.styleable.class); } catch (IllegalAccessException ignore) {} } } return null; }