Скачать или смотреть Resolving the cannot find symbol textView Error in Android Studio

A comprehensive guide to fixing the `cannot find symbol` error related to `textView` in Android Studio, ensuring smooth data passing between activities.
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This video is based on the question https://stackoverflow.com/q/65263937/ asked by the user 'Adnan Attar' ( https://stackoverflow.com/u/13629722/ ) and on the answer https://stackoverflow.com/a/65263957/ provided by the user 'Mureinik' ( https://stackoverflow.com/u/2422776/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Resolving the cannot find symbol textView Error in Android Studio

If you're working on an Android project and have encountered the frustrating error message: "cannot find symbol: variable textView," you're not alone. This often occurs while trying to manipulate UI elements, specifically when passing data between activities. Let's work through the solution to this problem step-by-step so you can continue developing your app.

Understanding the Error

The error message is telling us that the variable textView is not recognized in your code. Often, this occurs because:

The variable is not declared properly.

There's a mismatch between variable names.

The TextView was not initialized before being used.

In your case, the issue arises from the use of the variable textView, which you did not declare in your code; instead, you declared variables named name, surname, and number.

Analyzing Your Code

Here is the relevant portion of your code:

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

Let's break down the issues:

You have declared three TextView variables: name, surname, and number.

However, you're trying to use textView.setText(...) instead of using the correct variable names.

Steps to Fix the Error

To resolve the error, you'll need to use the correct variable names when setting text for your TextView components. Here's an updated version of your code:

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

Key Changes

Changed textView.setText(...) to name.setText(...), surname.setText(...), and number.setText(...) to match the variable declarations.

Conclusion

By carefully matching your variable names to their declarations, you can easily resolve the cannot find symbol error. Always ensure that the variables you reference in your code exist and are properly initialized before use.

If you encounter further issues, revisiting the basics of variable declarations and scope can be very helpful. This kind of error serves as a reminder to always double-check your code for consistency and clarity.



Now that you have a clear understanding of how to resolve the cannot find symbol textView error in Android Studio, you can continue building your application with greater confidence.