🔹 Building a Multi-Screen App in Power Apps – A Complete Guide

📌 Introduction

A multi-screen app in Power Apps allows users to navigate between different screens for a better user experience. Each screen serves a specific function, such as home, data entry, details, or settings.

✅ Why Use Multiple Screens?

• 🎯 Organizes app functions clearly
• 🔄 Improves navigation and usability
• 🚀 Enhances performance by loading data only when needed

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🔹 Step 1: Creating a New Power Apps Multi-Screen App

1️⃣ Open Power Apps Studio
2️⃣ Click Create an App → Canvas App
3️⃣ Choose Tablet or Phone Layout
4️⃣ Rename the App for better organization

📌 Now, you have a blank app ready!

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🔹 Step 2: Adding Multiple Screens

1️⃣ Go to Tree View (Left Panel)
2️⃣ Click New Screen → Choose a layout (Blank, List, Form, etc.)
3️⃣ Repeat the process to add more screens

✅ Example Screens:

• 🏠 HomeScreen → Main menu
• 📄 FormScreen → Data entry
• 🔍 DetailsScreen → View record details

📌 Use meaningful names like HomeScreen, FormScreen, etc.

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🔹 Step 3: Adding Navigation Between Screens

✅ Using the Navigate Function
1️⃣ Add a Button on HomeScreen
2️⃣ Set the OnSelect property:

Navigate(FormScreen, ScreenTransition.Fade)

📌 When clicked, the user moves to the Form Screen!

✅ Using Back Function to Return
1️⃣ Add a Back Button on FormScreen
2️⃣ Set the OnSelect property:

Back()

📌 Returns to the previous screen!

✅ Using a Gallery for Navigation
1️⃣ Insert a Gallery (e.g., List of Users)
2️⃣ Set the OnSelect of Gallery Items:

Navigate(DetailsScreen, ScreenTransition.Cover)

📌 Clicking an item opens the Details Screen!

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🔹 Step 4: Passing Data Between Screens

✅ Example: Sending Selected Item to Another Screen
1️⃣ Select the Gallery on HomeScreen
2️⃣ Set the OnSelect property:

Navigate(DetailsScreen, ScreenTransition.Cover, {selectedItem: ThisItem})

3️⃣ On DetailsScreen, set Label Text to:

selectedItem.Title

📌 Now, details of the selected item appear on the next screen!

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🔹 Step 5: Creating a Form for Data Entry

✅ Adding an Edit Form
1️⃣ Go to FormScreen
2️⃣ Insert a Form Control (Insert → Forms → Edit Form)
3️⃣ Set the DataSource property:

DataSourceName

📌 This connects the form to your data source!

✅ Enabling Form Submission
1️⃣ Add a Submit Button
2️⃣ Set the OnSelect property:

SubmitForm(EditForm1)

📌 Now, data is saved when the button is clicked!

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🔹 Step 6: Handling Navigation Logic

✅ Navigating After Submitting a Form

SubmitForm(EditForm1);
Navigate(HomeScreen, ScreenTransition.None)

📌 After submission, the user goes back to the Home Screen!

✅ Show a Success Message After Submission

Notify("Form submitted successfully!", NotificationType.Success)

📌 Displays a success message after saving data!

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🔹 Step 7: Managing Screen Transitions

Power Apps provides different transition effects:

✅ Fade Effect

Navigate(NextScreen, ScreenTransition.Fade)

✅ Cover Effect

Navigate(NextScreen, ScreenTransition.Cover)

✅ Uncover Effect

Navigate(NextScreen, ScreenTransition.UnCover)

📌 Improves user experience with smooth transitions!

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🔹 Step 8: Enhancing User Experience

✅ Add a Navigation Menu
1️⃣ Insert a Vertical Container
2️⃣ Add Buttons for each screen
3️⃣ Set the OnSelect property of each button

Navigate(HomeScreen, ScreenTransition.None)

📌 Now users can navigate easily between screens!

✅ Implement a Back Button on All Screens
1️⃣ Insert a Back Icon
2️⃣ Set OnSelect to:

Back()

📌 Users can return to the previous screen easily!

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🔹 Step 9: Optimizing Performance

✅ Lazy Loading Data
Load only the necessary data when a screen opens:

OnVisible = ClearCollect(TempData, Filter(DataSource, Condition))

📌 Prevents app from slowing down by loading data efficiently!

✅ Use Global Variables for Navigation

Set(CurrentScreen, "FormScreen")

📌 This stores the current screen for better control!

✅ Limit Controls Per Screen
Too many controls slow down the app. Keep only the necessary elements on each screen.

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🔹 Conclusion

A multi-screen app improves usability by organizing app functionality across different screens.

💡 Key Takeaways:
✅ Use Navigate() for screen transitions.
✅ Pass data between screens with context variables.
✅ Implement forms and galleries for structured navigation.
✅ Optimize performance by lazy loading data.
✅ Enhance UI with menus and animations.

Now, you’re ready to build a professional multi-screen app!

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