Resolving TypeError: undefined is not an object (evaluating '_this2.setState') in React Native

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What Causes This Error?

Let’s take a closer look at your code example to understand exactly what’s happening:

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The Solution: Using Arrow Functions

To resolve this issue, you'll want to change the way you define the getData method in your component. By changing getData() to an arrow function, you can ensure that it retains the this context of your class. Arrow functions do not have their own this context; they inherit it from the parent scope. Here’s how you can modify your code:

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

Key Changes:

Change the function declaration: Use getData = () => {} instead of getData() {} to make it an arrow function.

Conclusion

Understanding how this works in JavaScript is crucial for React Native developers, and mastering these small details will greatly improve your coding efficiency. Happy coding!