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What is the use of ?
Key
A is an identifier for Widgets, Elements
and SemanticsNodes. A new widget will
only be used to update an existing element
if its key is the same as the key of the
current widget associated with the
element.


It keeps a reference to state and access the
state at different times or maintains it
while modifying the widget tree.

Key
hello@somniosoftware.com
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What is the use of Key?

  • 1. What is the use of ? Key A is an identifier for Widgets, Elements and SemanticsNodes. A new widget will only be used to update an existing element if its key is the same as the key of the current widget associated with the element. It keeps a reference to state and access the state at different times or maintains it while modifying the widget tree. Key