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# layoutManager

The text container’s layout manager.

```
unowned(unsafe) var layoutManager: NSLayoutManager? { get set }
```

## Discussion

Avoid assigning a layout manager directly through this property. Instead, use the [`replaceLayoutManager(_:)`](/documentation/UIKit/NSTextContainer/replaceLayoutManager(_:)) method when you want to replace the layout manager. The framework sets the value of this property automatically when you add a text container to your layout manager using the [`addTextContainer(_:)`](/documentation/UIKit/NSLayoutManager/addTextContainer(_:)) method.

## See Also

[`func addTextContainer(NSTextContainer)`](/documentation/UIKit/NSLayoutManager/addTextContainer(_:))

Appends the specified text container to the series of text containers where the layout manager arranges text.


---

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