How to Automatically Show Alert in iOS When DFU State Completes скачать в хорошем качестве

How to Automatically Show Alert in iOS When DFU State Completes

Learn how to automatically display an alert in iOS using Swift when the Device Firmware Update (DFU) state is completed. This guide walks you through the steps and offers insights on handling alerts effectively. --- This video is based on the question https://stackoverflow.com/q/63011630/ asked by the user 'Lilya' ( https://stackoverflow.com/u/11219710/ ) and on the answer https://stackoverflow.com/a/63027822/ provided by the user 'Dris' ( https://stackoverflow.com/u/6747584/ ) 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: How to automatically show alert iOS 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. --- Automatically Show Alert in iOS When DFU State Completes When developing applications on iOS, one common requirement is to notify users of certain state changes through alerts. Imagine working with a Device Firmware Update (DFU) process where you want to inform users when the update has completed without requiring a manual button press. In this guide, we'll discuss how to achieve this using Swift and UIAlertController in iOS. The Problem You have a DFU view where you update the firmware of physical devices. The goal is to show an alert once the firmware update completes, which means you need to bind the alert display to the DFU state rather than to any button action. Here is the core of the problem: how to automatically trigger a UIAlertController as soon as the DFU state is .completed? Solution Overview The solution to this problem lies in correctly implementing the delegate methods and ensuring that the alert is presented when the state changes to completed. Specifically, we need to ensure the showDFUCompletedAlert() method is called in the right context when the DFU state transitions to .completed. Step-by-Step Explanation Understanding the State Change: Your DFU process likely has several states, such as connecting, starting, and completed. You need to monitor these states and trigger the alert at the appropriate time. Implementing the Alert: You have already defined the method showDFUCompletedAlert() that creates and presents the alert. Callback on State Change: In your dfuStateDidChange(to state: DFUState) method, you will check for the completed state and call the alert method. Here’s a more detailed breakdown of the implementation: 1. DFU State Change Method Here's the code you're currently using to handle state changes: [[See Video to Reveal this Text or Code Snippet]] According to this code, when the state transitions to .completed, the method showDFUCompletedAlert() from your supportDelegate is triggered. 2. Defining the Alert Method Ensure your alert method is defined correctly to present the alert: [[See Video to Reveal this Text or Code Snippet]] Missing Delegate Assignment As noted in the feedback you received, one common issue is that you may have forgotten to set the delegates for your controller. Without the proper delegation, your alert method might not run as expected. Ensure that your view controller's delegate is correctly assigned to the controller handling the DFU updates. Conclusion By following these steps, you should be able to automatically display an alert in your iOS application once the DFU update has completed successfully. Remember to always check your delegate assignments and verify that state changes are correctly monitored. This will significantly enhance your app's user experience by providing timely and informative alerts. Happy coding!