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New Alternative of Navigate() function on App.StartScreen and App.OnStart in Canvas apps

Inkey, May 5, 2022 5950 Views

We were facing some issue when writing code of Navigation in App.StartScreen and App.OnStart of App within PowerApps. It is widely used for the initialization of global variables, prefetching of data into collections, and to determine which screen should be shown first.

By default, the first screen shown when an app starts is the first in the Tree View in Studio. Navigate() function is used to redirect from one screen to another and we can also call the Navigate() function from within App.OnStart.

We were setting it up so that a particular screen should be visible if user logs in and another screen should be visible if Admin logs in. Usually we write the code for navigate() as below.

But as you can see, we faced an error. We couldn’t understand the error as it said ‘invocation of unsupported function’.

We may have written Navigate() function in past, but we should not write Navigate() with version 3.21101 and later like below:

By introducing App.StartScreen, Microsoft going to begin the process of retiring the use of Navigate in App.OnStart.

There is a new feature in Settings that enables Navigate() in App.OnStart.  Go to, Settings > Upcoming Fetures > Retired > Enable Navigate functiuon in App.OnStart

For old apps, that make use of Navigate in OnStart, this switch will be On.  For new apps, this switch will be off by default but can be turned on.

Hope this helps!

 

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