code: private void obtainDialogMessageColor(@NonNull final TypedArray typedArray) {
          setDialogMessageColor(
                  typedArray.getColor(R.styleable.DialogPreference_dialogMessageColor, -1));
      }
docs: Obtains the message color of the dialog, which is shown by the preference, from a specific
  typed array.
  
  @param typedArray
  The typed array, the message color should be obtained from, as an instance of the
  class {@link TypedArray}. The typed array may not be null