Updates the value of the ID context variable to 12, and updates the value of the Shade context variable to Color.Red. Navigate( Details, ScreenTransition.Fade, )ĭisplays the Details screen with a Fade transition. The current screen fades away to show the Details screen. No value of a context variable is changed. Navigate( Details, ScreenTransition.Fade )ĭisplays the Details screen with a Fade transition. This record updates the context variables of the new screen as if passed to the UpdateContext function.ĭisplays the Details screen with no transition or change in value for a context variable. A record that contains the name of at least one column and a value for each column. See the list of valid values for this argument earlier in this article. The visual transition to use between the current screen and the next screen.
By default, the transition through which a screen returns is the inverse of the transition through which it appeared. Refer to the list of valid values for this argument earlier in this article. The visual transition to use between the current screen and the previous screen. Pass an optional argument to Back to force a specific transition.īack normally returns true but returns false if the user hasn't navigated to another screen since starting the app.
For example, if a screen appeared through the CoverRight transition, Back uses UnCover (which is to the left) to return. When the Back function runs, the inverse transition is used by default. You can use successive Back calls to return all the way to the screen that appeared when the user started the app. The Back function returns to the screen that was most recently displayed.įor each Navigate call, the app tracks the screen that appeared and the transition. Navigate normally returns true but will return false if an error is encountered.Ĭontext variables for navigation are explained in the article navigate between screens. The App.ActiveScreen property will be updated to reflect the change. Set the OnHidden property of the old screen, the OnVisible property of the new screen, or both to make additional changes during the transition. This record is the same as the record that you use with the UpdateContext function. As an optional third argument, pass a record that contains the context-variable name as a column name and the new value for the context variable.
#SCREEN SHADE APP UPDATE#
You can use Navigate to create or update context variables of the new screen. The current screen slides out of view, moving left to right, to uncover the new screen.
The current screen slides out of view, moving right to left, to uncover the new screen. The new screen quickly replaces the current screen. The current screen fades away to reveal the new screen. The new screen slides into view, moving left to right, to cover the current screen. The new screen slides into view, moving right to left, to cover the current screen.
In the second argument, specify how the old screen changes to the new screen: Transition Argument In the first argument, specify the name of the screen to display. You can use either function only within a behavior formula. Use the App object's StartScreen property to control the first screen to be displayed. If you've used another programming tool, this approach is similar to passing parameters to procedures. You can use this approach to pass parameters to a screen. You can use Navigate to set one or more context variables for the screen that the formula will display, which is the only way to set a context variable from outside the screen. The user can then navigate back to the original screen and confirm that the slider has kept its value.Ĭontext variables are also preserved when a user navigates between screens. For example, a user can change the value of a slider on one screen, navigate to a different screen that uses that value in a formula, and determine how it affects what happens in the new screen. You can build formulas that refer to properties of controls on other screens. Screens that aren't currently displayed continue to operate behind the scenes. In that formula, you can specify a visual transition, such as Fade, to control how one screen changes to another.īack and Navigate change only which screen is displayed. For example, set the OnSelect property of a button to a formula that includes a Navigate function if you want to show a different screen when a user selects that button. Use the Back and Navigate function to change which screen is displayed.
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