Скачать или смотреть How to Delay Data View for 3 Seconds in Flutter

Learn how to implement a delay in your Flutter application to enhance user experience by displaying a placeholder before loading the actual data.
---
This video is based on the question https://stackoverflow.com/q/68419156/ asked by the user 'Jon' ( https://stackoverflow.com/u/15967988/ ) and on the answer https://stackoverflow.com/a/68419254/ provided by the user 'Thepeanut' ( https://stackoverflow.com/u/9039032/ ) 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 delay data view 3 second in flutter

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 Delay Data View for 3 Seconds in Flutter

Developing a seamless and engaging user experience in mobile applications is crucial for gaining and retaining users. One way to enhance the user experience in Flutter applications is to incorporate a delay before displaying data. In this guide, we will explore how to implement a 3-second delay in your Flutter app to show a loading indicator or a placeholder before the actual data is loaded.

The Challenge

Imagine you have created an application where a list of jobs is displayed using a ListView. Upon loading the page, you want the app to exhibit a loading state for a few seconds (3 seconds, to be exact) before it reveals the actual data. This can be beneficial, particularly when fetching data from an API or database, as it gives the user a sense of waiting and smoothens the transition between states.

In the provided code snippet, we have a simple layout:

[[See Video to Reveal this Text or Code Snippet]]

However, we want to display this list after a 3-second delay, showing a loading indicator like ProfileShimmer.

Solution Breakdown

To implement this delay, we will make use of Flutter's Future and setState functions. Below, we'll break down the solution into clear and organized sections.

Step 1: Create a Stateful Widget

We will create a stateful widget that will manage the loading state.

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Initialize Loading State

In the _PageWithDelayedViewState class, we will define a boolean variable to track whether the data has been initialized (loaded) or not.

[[See Video to Reveal this Text or Code Snippet]]

Step 3: Create the Delay

Using the Future.delayed method, we can pause the loading of data for 3 seconds and update the state once the delay is over:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Build the Widget

Finally, in the build method, we will check if the data is initialized. If not, we display our loading indicator (like ProfileShimmer), and once the delay has elapsed, we show the actual data.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you can effortlessly implement a 3-second delay in your Flutter application before displaying the actual data. This not only enhances the loading experience for users but also adds a professional touch to your app’s interface.

Now, go ahead and implement this in your application to make it more appealing and user-friendly! Happy coding!