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Power Apps portals as mobile apps (preview)

Headshot of article author Ankita Vishwakarma

We are excited to announce the upcoming capability of portals as a progressive web app, enabling makers to enable portals into apps with native app like look & feel right from portal studio in just few steps!

We are leveraging Progressive web app technology (PWA) to enable portal to multi-platform supported app which works on all platforms (android/iOS/windows) as well as all form factors (mobile/desktop/tablet).

With PWA, end user can pin Power Apps portals as an app to the home screen on a mobile device or install it from the app store

This great new feature is stuffed with following capabilities :

  • Create low code-no code branded app in just few steps from portal studio
  • Manage basic offline experience of your app
  • Distribute your app via browser or app stores

You can create your own branded app by customizing your PWA by changing the app name, starting page, color, and more using the customization option.

Here’s how it works:

  1. Sign in to portals Studio, select Progressive web app.
  2. Select Enable PWA to turn on the PWA capability for your portal and select Customize PWA under Customization.
  3. Add title, description, starting page, splash screen color and app icon.

We are providing support for a smooth navigation experience when the device being used is offline or disconnected from the internet. You can choose the pages within portals that will have this read-only offline capability, and a message page for the rest of the portal capability that isn’t enabled for offline access.

Here’s how it works:

  1. In portals Studio, select Progressive web app.
  2. Under Customize PWA, select Manage offline pages under Offline behavior.
  3. Select the pages that you want to enable for offline access using PWA.
  4. To set up the offline message page:
    1. In portals Studio, under Customization, select Offline message page.
    2. Customize the page like any other portals page.

You can choose to distribute your app via browser or via app store

  1. Distribute your app using a browser

    Once your portal is enabled as a PWA, your users can pin Power Apps portals as an app to the home screen on a their device.

  2. Distribute your app through an app store

    You can create an app package for your portal’s PWA and publish the package to different app stores such as Microsoft Windows Store and Google Play Android Store.

Here’s how it works:

  1. To create app package, select Create app package under App package in Progressive web app in portals Studio.
  2. You’ll be taken to PWA builder where you can create app package for various app stores such as Microsoft Windows Store and Google Play Android Store and step-by-step document to publish app in respective store.
  3. You can now publish app in respective app store console.

Your feedback will help us continue to build on and improve the capabilities of this feature. We want to hear from you!

For details, see the documentation.

Thank you,
Ankita Vishwakarma

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Power Fx: Error handling graduates to preview

We are thrilled to announce that the long-time experimental feature Formula-level error handling has moved forward to preview. As a result, you and your end users will enjoy higher reliability and more transparency about what is happening in your apps. It’s a huge step. Adding error handling to an existing language turned out to be a very tall order, touching almost everything, from data types, to functions, to the runtime. Thank you for all of your support, feedback, and patience as we got this done. What does it mean for you? Your apps will more reliably detect and report errors.You can write blank/null values to a database.You can detect and replace errors with the IsError, IsErrorOrBlank, and IfError functions.You can control error reporting and logging at a central location with App.OnError.You can create and throw your own custom errors with the Error function. Error handling is a big change in behavior. By entering preview, we are signaling that we believe we are done, that we anticipate no further significant changes from here. Many of you already use error handling in production and this move to preview should only embolden more of you to do so. If significant changes are needed from here, we will treat them as a separate feature. We are rolling this out slowly as it is such a big change. All of you will soon see that the Formula-level error handling switch has moved from experimental to preview in the settings (as of version 3.22082). It will still be default to off for most tenants. Over the coming weeks we will slowly change the default for new apps only to on across the tenants. Makers can still disable this feature and will be able to do so for a long time. I say again: we are changing the default for new apps only. Existing apps will continue running as they always have. We have no plans at this time to turn this on for existing apps, and as this is such a big change, we may never do this and make this a permanently available switch. Your feedback will guide us. The documentation for Error, IfError, IsError, IsErrorOrBlank functions and the App.OnError property covers these changes. IfError and IsError are very similar to their Excel counterparts. We are also working on overview docs that will be released shortly. But before that, let’s take a brief tour. Let’s start with what Excel does, the inspiration for Power Fx. For an error like division by zero, Excel is very clear that something has gone wrong with a # error message that shows right in the cell. This error will propagate to other cell formulas if A1 is used in a formula: Today, without error handling, Power Apps won’t report anything in this scenario, instead treating the division by zero error as a blank value. That’s not good, as the maker and the end user of the app have no idea something may have gone wrong: Errors happen. Unexpected data flows in, networks go down, storage fills up, to name just a few situations that an app may encounter in the real world. Makers don’t often think through all the ways that things can go sideways which makes default error handling even more important. Returning a blank for an error is also a problem because blank is a legitimate value in our type system and in many databases. Without error handling, Power Apps won’t allow you to write a blank to a database instead thinking it is an error. So, instead of returning an easy to ignore or misinterpret blank value, with error handling turned on we now report an error to the end user (the error banner) and show the formula as having an error to the maker (the red filled in circle on the control): Further, if you look at the value of the formula, it is not a blank but an error value. Just as any formula can result in a blank, now any formula can also result in an error: Now, we still aren’t showing an error in the label control itself as Excel does. We couldn’t do this generically because, unlike Excel, the error could be on a property of a control for which there is no way to display the error. For example, where should an error on a slider control? Where should an error be shown for an imperative operation in the middle of a button’s OnSelect formula? We settled on showing the end user banner and flagging the control in the design experience. That’s not to say you can’t detect and display an error in that label control. Error handling provides a wealth of mechanisms to control how errors are handled and reported. For example in this case, we can wrap the division by zero with an IfError function to return a custom message in the label: The Text function call is required for type compatibility. Or we can use IfError to throw a different, more specific error with the Error function: Or we can have a catchall for all errors in the app with App.OnError. For example, we can log the error and present a different message to the end user: If we look at the log, we see the details of the captured error from FirstError (and there is also an AllErrors), including where it happened and when it was detected: The possibilities are endless! You now have all the tools you need to detect, replace, report, and log errors, including a good default behavior if you never take advantage of these tools. And, bonus, you can also now write blank (or null) values to databases. Please let us know what you think in the Power Apps community forum. There is a dedicated and active space for error handling discussions at Error Handling – Power Platform Community (microsoft.com).

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