creating a DialogPreference from XML

Question

I have been attempting to use an `android.preference.DialogPreference` inflated from XML, but the documentation seems to be missing some essential bits, and I cannot find a working example anywhere. My XML now looks like this (I tried many permutations but this seems like a reasonable minimum): ``` <DialogPreference android:key="funThing" android:title="Fun Thing" android:dialogLayout="@layout/fun_layout" android:positiveButtonText="OK" android:negativeButtonText="Cancel" /> ``` My supposition at this point is that it is required to subclass `DialogPreference` and not to use it directly. For one, I cannot find a way to associate the actual preference value with an element in the dialog itself, which upon reflection is kind of a giveaway. And also, looking at the source to `DialogPreference.java` seems to confirm it. And I also just noticed that the official documentation refers to it as a "base class". But at very least, it would be nice to establish a definitive-enough source on the…

Accepted Answer

This one is weird, you need to subclass `DialogPreference`. The subclass does not need to do anything. So

```
public class MyDialogPreference extends DialogPreference {

public MyDialogPreference(Context context, AttributeSet attrs) {
        super(context, attrs);
        // TODO Auto-generated constructor stub
    }

} 
```

can be instantiated. While a plane old `DialogPreference` can not. Very weird, they should be the exact same thing.

creating a DialogPreference from XML

Solution

Problem