Should I dispose TextEditingController?

Remember to dispose of the TextEditingController when it is no longer needed . This will ensure we discard any resources used by the object. This example creates a TextField with a TextEditingController whose change listener forces the entered text to be lower case and keeps the cursor at the end of the input.

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How do controllers work in flutter?

In flutter, controllers are a means to give control to the parent widget over its child state . The main selling point of controllers is that they remove the need of a GlobalKey to access the widget State. This, in turn, makes it harder to do anti-pattern stuff and increase performances.

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