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Building Custom UI Components in iOS: Subclassing UIView and UIControl When it comes to designing custom user interfaces in iOS, there are two main approaches: subclassing UIView and UIControl. Both approaches have their own advantages and disadvantages, and the choice largely depends on the specific requirements of the project. Subclassing UIView allows developers to create custom visual elements that can be added to the view hierarchy. This approach is ideal for creating reusable components such as buttons, labels, and text fields. By subclassing UIView, developers can add their own custom properties and methods, and even override existing ones to modify the default behavior of the component. On the other hand, subclassing UIControl is a more specialized approach that is used for creating interactive components such as buttons, sliders, and switches. This approach allows developers to implement their own custom touch handling logic, which is necessary for capturing user input and responding to it appropriately. Overall, both approaches are powerful tools for creating custom user interfaces in iOS. By carefully considering the specific needs of the project, developers can choose the approach that best suits their requirements and deliver a polished and intuitive user experience.