requireActivity()
时间: 2023-12-06 16:05:52 浏览: 17
The `requireActivity()` method is used in Android development to get the activity that this fragment is currently associated with. It is a non-null method, meaning that it will throw an exception if the activity is null. This method is often used to access activity-level methods and properties from within a fragment.
For example, if you wanted to get a reference to the ActionBar in your activity from your fragment, you could use the following code:
```
val actionBar = requireActivity().actionBar
```
Or if you wanted to launch a new activity from your fragment, you could use the following code:
```
val intent = Intent(requireActivity(), MyNewActivity::class.java)
startActivity(intent)
```