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