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The Project Designer window appears. It is divided into four panes:

                                                        View pane             Components pane








                                                                                                       Properties
                      Palette                                                                            pane
                       pane














                   Palette pane: On the left, there is a palette pane from where we can select components like
                   buttons, images, and other functions required for our app.
                   View pane: To the right of the palette is the white area where we can view and arrange added
                   components.

                   Components pane: This pane shows a list of all the components added to the screen in a
                   hierarchical view.
                   Properties pane: When we click on a component in the viewer, we see its properties listed here.
                   Properties of the components can be changed from here.

                 CREATING A TALKING APP

                 In the Project Designer window, we
                 will design the interface by choosing
                 buttons,  images  or text  boxes
                 and specify  the functionalities  of
                 our app. We are going to create a
                 simple talking app by following the
                 given steps:


                 Adding a Button
                 Drag  and drop a  button  from the
                 Palette pane to the View pane.


                 Testing the App

                 App Inventor allows us to test our app while creating, so to test your app, connect your android
                 device and download MI A12 companion. Now follow the given steps.





                                                                                            Developing Mobile Apps  97
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