android - Get the resource id for the drawable reference used in styled attribute -

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having custom view myview define custom attributes:

<?xml version="1.0" encoding="utf-8"?> <resources>     <declare-styleable name="myview">         <attr name="normalcolor" format="color"/>         <attr name="backgroundbase" format="integer"/>     </declare-styleable>    </resources>

and assign them follows in layout xml:

    <com.example.test.myview         android:id="@+id/view1"         android:text="@string/app_name"         . . .         app:backgroundbase="@drawable/logo1"         app:normalcolor="@color/blue"/>

at first thought can retrieve custom attribute backgroundbase using:

typedarray = context.gettheme().obtainstyledattributes(attrs, r.styleable.myview, defstyle, 0); int base = a.getinteger(r.styleable.myview_backgroundbase, r.drawable.blank);

which works when attribute not assigned , default r.drawable.blank returned.
when app:backgroundbase assigned exception thrown "cannot convert integer type=0xn" because, though custom attribute format declares integer, references drawable , should retrieved follows:

drawable base = a.getdrawable(r.styleable.myview_backgroundbase); if( base == null ) base = bitmapfactory.decoderesource(getresources(), r.drawable.blank);

and works.
question:
i don't want drawable typedarray, want integer id corresponding app:backgroundbase (in example above r.drawable.logo1). how can it?

it turns out answer right there:

typedarray = context.gettheme().obtainstyledattributes(attrs, r.styleable.myview, defstyle, 0); int base = a.getresourceid(r.styleable.myview_backgroundbase, r.drawable.blank);

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