Final answer:
This code checks the status of the helloCheckBox and performs an action on the helloTextView if it is checked.
Step-by-step explanation:
This code checks whether the helloCheckBox is checked or not. If the checkbox is checked, it performs a specific action on the helloTextView. To implement this functionality in code, you would typically use an event listener or handler for the checkbox, and within that, check the status of the checkbox and update the helloTextView accordingly.