Question

I’m subclassing the Spinner class, and I need to get the objects specified in the xml file by android:entries. How can I do that?

<com.myapp.MySpinner
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:entries="@array/myarray"/>

So I need either the array specified in the entries argument, or the resourceid so I can fetch them myself.

Answer 1

You need to override constructor of Spinner and retrieve entries from the AttributeSet param.

public class MySpinner extends Spinner {
    public MySpinner(Context context, AttributeSet attrs) {
        super(context, attrs);

        if (attrs != null) {
            final int[] ids = {android.R.attr.entries};
            final TypedArray array = context.obtainStyledAttributes(attrs, ids);
            final int entriesId = array.getResourceId(0, 0);

            if (entriesId > 0) {
                final Resources resources = context.getResources();
                final String[] entries = resources.getStringArray(entriesId);

                if (entries != null) {
                    // do whatever you want here
                }
            }
        }
    }
}