This document provides instructions for creating a screen with tabs in PowerApps. It describes adding a scrollable screen, three sections to represent each tab, setting the fill color of each section/tab, defining a collection and variable to track the selected tab, adding a horizontal gallery to display the tabs, and setting the visible property of each section based on the selected tab variable.

1. Screen withTabs
How to create a Screen withTabs in PowerApps
Peter Heffner
@Lingualizer

2. Why this tutorial?
• Sometimes it's just too much information for 1 single screen
• You don't want the user to have to scroll or navigate to different screens
This is what we do:
• Create 1 single screen
• Add some tabs
• Display only the content related to the selected tab

3. Add a 'scrollable Screen'
Only the 'scrollable Screen' has the Canvas we need for our tabs.

4. Add 3 Sections
• Add 3 Sections in order to
create 3 DataCards
• Each DataCard will work as a
single screen

5. Set the Fill Colour for each DataCard
Set the fill colour of each DataCard to a
different value.
Each DataCard represents a separateTab
This makes it easier to see whichTab is
active.

6. Screen – OnVisible Action
This example has 3 tabs which are defined in a Collection 'collTabs':
ClearCollect(collTabs,{No:1,Name:"Tab 1"},{No:2,Name:"Tab 2"},{No:3,Name:"Tab 3"})
'No' can be used to set the order how the tabs are displayed
'Name' is the text that appears on the tab.
Let us also define a local variable '_SelTab' which is set to the currently selected tab:
UpdateContext({_selTab:1})

7. Add a blank horizontal Gallery
On 'Screen' level add a blank horizontal
Gallery
Place the Gallery in the top header
section

8. Define the Gallery
Set [Items] to the Collection created at
'OnVisible' of the screen.
Edit the Gallery
Add a Button control to the Gallery.
You may either want to change the colour of
the header rectangle or the fill color of the
button.

9. Define the Buttons 1/3
Make it a nice button:
Select the Button
Set RadiusBottomRight = 0
Set RadiusBottomLeft = 0
Set the top left and right
radius' to half the height of
the button
Add the text label:
With the button selected set
[Text]=ThisItem.Name
This will add the
corresponding name from the
Collection.

10. Define the Buttons 2/3
Add some Action:
With the button selected set
[OnSelect]=UpdateContext({_selTab:ThisItem.No})
The local variable [_selTab] is set to the number of the tab as defined in the collection

11. Define the Buttons 3/3
Set the DisplayMode:
In order to see which tab has been selected, we set the DisplayMode of the selected button
to 'Disable' and set it to 'Edit' if not selected:
If(ThisItem.No=_selTab,DisplayMode.Disabled,DisplayMode.Edit)

12. Display the Screens
Set the screensVisible property:
By default the [Visible] property of all DataCards is 'true'
Select a DataCard in the tree view which
should be displayed ifTab1 is selected:
Select the [Visible] property
Set the value to 'If(_selTab=1,true,false)'
The other DataCards go like
If(_selTab=2,true,false) and
If(_selTab=3,true,false)
TheVisible property of the DataCard is set
by the value of the local variable [_selTab].

13. Thanks for watching!
@Lingualizer