How to Fix the Activity Indicator Issue in .NET MAUI скачать в хорошем качестве

How to Fix the Activity Indicator Issue in .NET MAUI

Discover how to ensure your Activity Indicator displays correctly during data collection in .NET MAUI applications. --- This video is based on the question https://stackoverflow.com/q/77111171/ asked by the user 'user1803086' ( https://stackoverflow.com/u/1803086/ ) and on the answer https://stackoverflow.com/a/77111287/ provided by the user 'Anuj Karki' ( https://stackoverflow.com/u/22362343/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Problem with Activity Indicator in Net Maui Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- How to Fix the Activity Indicator Issue in .NET MAUI When developing applications in .NET MAUI, handling user interactions and updating the UI can lead to challenges, especially when it comes to displaying loading indicators. One common problem developers face is ensuring that the Activity Indicator shows up while a long-running process—like data fetching—is in progress. The Problem In this scenario, we have an Activity Indicator control that is intended to signal users that a background operation is taking place when they click a button. However, instead of being displayed immediately, the indicator appears only after the data collection process has completed. This can leave users confused because they may not see any feedback that something is happening in the meantime. Relevant Code Snippet Here’s an excerpt of the relevant code: XAML Code: [[See Video to Reveal this Text or Code Snippet]] C# Code: [[See Video to Reveal this Text or Code Snippet]] In the above code, calling the ObtenerPrevision() function starts the data-fetching process, but the Activity Indicator is not running as expected while that operation is ongoing. The Solution Introduce Asynchronous Programming The primary reason the Activity Indicator does not show is due to blocking the UI thread. When a long-running process runs on the UI thread, it prevents the interface from updating until that process is complete. To resolve this, we can employ asynchronous programming. Implementation Steps Modify the Method Signature: Make the ObtenerPrevision() method asynchronous by using async and await. Update the UI Immediately: By using await, we can ensure that the UI can update immediately after we set the Activity Indicator to visible and running. Simulate Delay for Demonstration: Below is an example of how you might implement these changes to simulate a network call: [[See Video to Reveal this Text or Code Snippet]] Updated Button Click Handler Make sure to call the modified ObtenerPrevision in your button click handler. Here’s how it looks: [[See Video to Reveal this Text or Code Snippet]] Conclusion By integrating asynchronous programming into your .NET MAUI application, you can ensure that users receive the feedback they need when waiting for data retrieval processes to complete. Implementing the Activity Indicator correctly enhances user experience and prevents confusion during the loading periods of your application. Now you can confidently go ahead and make your applications not only functional but also user-friendly!