Скачать или смотреть How to Display SQLite Database Values in react-native-dropdown-picker

Learn how to fetch and display values from an SQLite database in your React Native app using `react-native-dropdown-picker`. Step-by-step instructions for effective implementation.
---
This video is based on the question https://stackoverflow.com/q/63129204/ asked by the user 'Josss' ( https://stackoverflow.com/u/7113477/ ) and on the answer https://stackoverflow.com/a/63131285/ provided by the user 'BloodyMonkey' ( https://stackoverflow.com/u/10258445/ ) 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: I am using 'react-native-dropdown-picker'; I want to show values from sqlite db to dropdown in react native, How do i do that?

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 Display SQLite Database Values in react-native-dropdown-picker

If you are developing a mobile application using React Native and would like to populate a dropdown list with data from an SQLite database, you've landed in the right place! In this article, we will tackle the popular question: "How do I show values from an SQLite database in a dropdown using react-native-dropdown-picker?"

Understanding the Problem

Many developers encounter challenges when trying to integrate data from a database into their UI components. Specifically, with React Native and the react-native-dropdown-picker, it can be tricky to pull and display this data dynamically. Let's take a closer look at how to solve this problem effectively.

Step-by-Step Solution

To get your SQLite data into the dropdown, follow these steps:

1. Initialize State

Begin by initializing your component's state in the constructor. You will want to set up an empty array that will later hold the data retrieved from your SQLite database.

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

2. Setting Up Database Transactions

Next, create a function to fetch data from your SQLite database. This function will perform a transaction to query the necessary data.

Here’s how you can set that up:

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

3. Rendering the Dropdown Picker

Once the state has been updated with the data, render the dropdown picker in your component's return method. Make sure to bind the items property to the highcourtname state.

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

Important Notes

Ensure that the getFromDatabase function is called at the appropriate lifecycle method, like componentDidMount, to fetch the data when the component mounts.

Consider adding error handling in case the database query fails or returns no results.

Conclusion

In summary, integrating dropdowns with SQLite database values in React Native is quite straightforward once you have a grasp of how to manage state updates and execute database queries. Just remember to set your component's state correctly, fetch the necessary data, and bind it to the dropdown picker.

By following this guide, you should be able to populate your react-native-dropdown-picker with live data from your SQLite database seamlessly. Happy coding!