Android™ How to Program, Second Edition

Methods getDoodleView and setDialogOnScreen

Methods getDoodleView and setDialogOnScreen (Fig. 7.19) are called by methods of the app’s DialogFragment subclasses. Method getDoodleView returns a reference to this Fragment’s DoodleView so that a DialogFragment can set the drawing color, set the line width or clear the image. Method setDialogOnScreen is called by Fragment lifecycle methods of the app’s DialogFragment subclasses to indicate when a dialog is on the screen.

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182      // returns the DoodleView183      public DoodleView getDoodleView()184      {185         return doodleView;186      }187 188      // indicates whether a dialog is displayed189      public void setDialogOnScreen(boolean visible)190      {191 ...