Question 1

How can I change the button colors in react-native-picker?

Accepted Answer

Use the pickerConfirmBtnColor and pickerCancelBtnColor params in the init method, specifying RGBA arrays for custom colors, as shown in the params table. This allows you to match your app's theme easily.

Question 2

What's the difference between parallel and cascade mode in react-native-picker?

Accepted Answer

Parallel mode is for independent wheels like time pickers, using flat arrays. Cascade mode is for dependent wheels like address pickers, requiring nested object structures, as explained in the notice section with examples.

Question 3

react-native-picker vs React Native's built-in Picker – which should I use?

Accepted Answer

react-native-picker offers better native performance and more customization options but requires linking. The built-in Picker is simpler and integrated but may lag with large datasets or have limited styling.

Question 4

How to update picker data dynamically when state changes?

Accepted Answer

You must re-call the init method with the new pickerData, as the picker doesn't automatically react to data changes. Manage this in your component's state and effects to re-initialize as needed.

Question 5

Can I use react-native-picker in an Expo project?

Accepted Answer

Not in the managed workflow without ejecting, as it requires native linking. Consider using the pure JavaScript version linked in the README or alternative pickers compatible with Expo's limitations.

Question 6

How to troubleshoot linking errors with react-native-picker on iOS?

Accepted Answer

Ensure your Podfile includes the correct path to the picker pod and that your React Native version is compatible. Run pod install carefully and check for common issues like missing dependencies or incorrect configurations.

Question 7

Example of a cascade picker for selecting country, state, and city?

Accepted Answer

Structure pickerData as nested objects with keys for countries, states, and cities, similar to the three-wheel cascade example in the README. Use selectedValue to set initial selections and handle confirm callbacks for user input.

react-native-picker

What is react-native-picker?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions