Android: Custom Xml Attributes for PreferenceScreen

Question

I use custom xml attributes for preferences. The preferences are inflated from xml.

I managed to create and read custom xml attributes for EditTextPreference, ListPreference and CheckBoxPreference by creating custom classes which inherit from the respective preference class.

In the constructor of the class I can read the attributes like so:

public class CustomTextPreference extends EditTextPreference {
    public CustomTextPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        TypedArray a = context.obtainStyledAttributes(attrs,R.styleable.PreferenceCustomAttrs);
        x = a.getString(R.styleable.PreferenceCustomAttrs_x);
        y = a.getString(R.styleable.PreferenceCustomAttrs_y);
    }
}

My problem is that I can't do this for the PreferenceScreen class, as it is a final class. So my question is: Is there any way I can read the custom attributes of a PreferenceScreen?

Answer 1

Probably not by the same techniques that you are using. Remember, though, that preference XML files are just XML resources. You can get a parser for the file via getResources().getXml() from your PreferenceActivity. From there, you can read whatever you want.