Troubleshooting: Swift Programmatic TableView Not Showing Cells

Описание: Learn how to fix your `Swift TableView` that isn't displaying cells. This guide gives clear solutions to common problems faced during table view setup in iOS development.
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This video is based on the question https://stackoverflow.com/q/62649110/ asked by the user 'justADummy' ( https://stackoverflow.com/u/13401901/ ) and on the answer https://stackoverflow.com/a/62649137/ provided by the user 'Tomo Norbert' ( https://stackoverflow.com/u/6177556/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Troubleshooting: Swift Programmatic TableView Not Showing Cells

If you find yourself in a situation where cells are not displaying in your Swift programmatic TableView, you're not alone. It can be frustrating to design everything correctly and not see the results in your app. In this post, we will go through the common mistakes and provide a clear path to fixing your TableView setup.

Understanding the Problem

When you create a custom table view cell and attempt to load data while witnessing no cells being shown, it’s likely due to the initialization or setup of the TableView. The issue might stem from how the data source and delegate are being handled or how the cells are being registered.

Diagnosing the Issue

Here are some common symptoms that might lead you to believe your custom cell is not loading:

The table view appears blank even after adding the cells programmatically.

There are no crashes or errors, yet you're unable to see your cell content.

You have confirmed that your table view delegate and data source methods are set up.

Review Your Setup

In this case, let’s scrutinize the TableViewSetUp method you’ve created. Here's the flawed version:

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

The Fix: Proper Initialization Order

The critical adjustment here pertains to the order in which you set the delegate and data source. They must be set after initializing the TableView, not before. Here is the corrected code:

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

Important Points to Consider

Initialization Before Setup: Ensure your TableView is initialized before setting its delegate and data source.

Cell Registration: Make sure the cell class is registered correctly with the identifier you are using.

Layout Constraints: Ensure that your constraints are being set appropriately so that the TableView takes up the desired space on the screen.

Conclusion

By following the steps outlined, you should be able to resolve the issue of your TableView not displaying cells. Always pay attention to the initialization order and the constraints you set up in your layout.

If the problem persists, double-check your other setup configurations like view did load and make sure that the data source methods are correctly implemented.

Remember, programming often involves debugging and troubleshooting, and with a methodical approach, you can resolve these issues effectively. Happy coding!