()

PanGestureRecognizer

(),

recognizer

recognizer

onStart

details

debugPrint

'onStart'

);

onUpdate

details

debugPrint

'onUpdate'

);

onEnd

details

debugPrint

'onEnd'

);

};

},

),

},

child:

Container

()

);

Code after migration:

// Example of code after the change.

void

main

()

runApp

Foo

());