Are you interested in understanding the underlying implementation of your iOS app? If you're working with Objective-C, it's essential to know how to view the source code. Follow these steps to see the Obj-C source code in Xcode:

1. Open Xcode: Launch Xcode, the integrated development environment (IDE) for macOS and iOS app development.

2. Navigate to the Project Navigator: In Xcode, locate the Project Navigator panel, typically located on the left side of the Xcode window. This panel displays the files and resources in your project.

3. Select the .m file: Once you've found the Project Navigator, navigate to the .m file that corresponds to the class or implementation you want to view. The .m file contains the actual implementation code for the corresponding .h (header) file.

4. View the source code: Double-click on the .m file to open it in the main editor area of Xcode. Here, you can see the Obj-C source code for that particular file. You can navigate through the code, review the logic, and understand how different methods and properties are implemented.

5. Use the Jump Bar: Xcode provides a convenient feature called the Jump Bar, located at the top of the editor area. The Jump Bar allows you to navigate through different parts of the code, such as methods, properties, or other elements within the file.

6. Use the Assistant Editor: If you want to see the .h file (header file) alongside the .m file, you can use the Assistant Editor in Xcode. This allows you to view the header and implementation file side by side, providing a comprehensive view of the class interface and its implementation.

By following these steps, you can effectively view the Obj-C source code in Xcode and gain insights into the inner workings of your iOS app. Understanding the source code is crucial for debugging, optimization, and overall app comprehension. Whether you're a beginner learning Obj-C or an experienced developer diving into a new codebase, knowing how to see the source code is a valuable skill in iOS development.