Types of Forms. Principles of Operation
Forms are everything that you see on the screen of your device. The main window, journals, references, documents, reports, dialogue windows — all of them are forms. They are designed to simplify our work with the database. This is done with the help of the form control elements, such as the menu, context menu, control panel of buttons (icons), drop-down lists and flags (check-boxes). You can also use the buttons of the Android Navigation Bar in any application. The Android Navigation Bar includes three buttons: "Recents" (we shall call it "Menu"), "Home" and "Back". "Menu" activates the menu, when it is available in the form. The "Home" button works the same in any place of any Android application: it returns you to the Desktop of your device. If you tap the "Salesman" icon again, you will be brought back to where you left off. The "Back" button returns you to a previous screen form. This button also works the same in any place of any Android application. "Menu" The menu is closely connected with other control elements — buttons. In some cases the menu items can "slip away" onto the control panel of buttons and back.
It depends on the size of your screen. The wider the screen, more buttons there are on the Control panel, which is situated in the top right corner.
The Context Menu is a form control element, activated by pressing and holding a necessary object (long tap). The menu contains a list of actions, available for this object.
The Flag (check-box) has two values: enabled and cleared. When it's set on, a corresponding feature is enabled. When it's cleared, the feature is disabled. This control element is used in the non-tabular forms.
The Drop-Down List is also used in the non-tabular forms to select a desired item from a corresponding reference, or to set the date and time.