Скачать или смотреть How to Display Selected Item from RecycleView to a TextInput in Kivy

Learn how to successfully display the selected item from a `RecycleView` to a `TextInput` widget in Kivy. We break down the solution with code modifications and explanations for clarity.
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This video is based on the question https://stackoverflow.com/q/65267709/ asked by the user 'Rushabh Patil' ( https://stackoverflow.com/u/12158197/ ) and on the answer https://stackoverflow.com/a/65277783/ provided by the user 'John Anderson' ( https://stackoverflow.com/u/7254633/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Display Selected Item from RecycleView to a TextInput in Kivy

Kivy is a powerful framework for building multi-touch applications. However, while working with widgets like RecycleView and TextInput, you may encounter difficulties in manipulating and displaying the selected item. One common issue developers face is how to transfer the selected item from a RecycleView to a TextInput. This post aims to guide you through this challenge with a clear solution.

Understanding the Problem

In the provided code, the objective is to display the currently selected item from a RecycleView into a TextInput widget, specifically from the class MyTextInput. However, developers encountered an error indicating that certain attributes or ids couldn't be accessed properly, primarily when trying to set the text in the TextInput.

Overview of the Solution

To address the issue, you’ll take the following steps:

Modify the Initialization - Introduce a reference to the DropDownWidget within the Body class.

Adjust the Selection Method - Update the apply_selection method in the SelectableLabel class to access the TextInput correctly.

Step 1: Modify the Initialization

First, let’s empower the Body class to hold a reference to the DropDownWidget. You’ll make some slight adjustments to the constructor of the Body class:

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

In this snippet:

You create an instance of DropDownWidget and store it in self.widget_1.

Set the necessary properties like word_list and starting_no.

Step 2: Adjust the Selection Method

Next, you need to modify how the apply_selection method references the TextInput. Use the following code in the SelectableLabel class:

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

In this code:

You access the TextInput through App.get_running_app().root.widget_1.

This way, when an item is selected, the text is correctly displayed in the TextInput.

Conclusion

Successfully linking a RecycleView item selection to a TextInput in Kivy is about ensuring proper access to the objects involved. By following the steps outlined in this post, you can overcome the issues of attribute access and make your application more interactive. Feel free to implement these changes in your code, and you should see the desired functionality working smoothly.

Happy coding!