Access resource defined in theme and attrs.xml android
Another possible way to do it:
public static int getResIdFromAttribute(final Activity activity,final int attr) {
if(attr==0)
return 0;
final TypedValue typedvalueattr=new TypedValue();
activity.getTheme().resolveAttribute(attr,typedvalueattr,true);
return typedvalueattr.resourceId;
}
Or in Kotlin:
@JvmStatic
fun getResIdFromAttribute(activity: Activity, attr: Int): Int {
if (attr == 0)
return 0
val typedValue = TypedValue()
activity.theme.resolveAttribute(attr, typedValue, true)
return typedValue.resourceId
}
no need to recycle anything here...
usage:
int drawableResId=getResIdFromAttribute(this,R.attr.homeIcon);
Drawable drawable = getResources().getDrawable(drawableResId);
I think you can get the Drawable with this code:
TypedArray a = getTheme().obtainStyledAttributes(R.style.AppTheme, new int[] {R.attr.homeIcon});
int attributeResourceId = a.getResourceId(0, 0);
Drawable drawable = getResources().getDrawable(attributeResourceId);
a.recycle();