Flutter controls a TextField to gain focus and lose focus

Flutter controls a TextField to gain focus and lose focus

First, explain the usage scenario.
Click on a control to make the text box focus and pop up the input method.
We can directly use FocusScope.of(context).requestFocus() to achieve focus.

To achieve focus, you first need to define a FocusNode

FocusNode _commentFocus = FocusNode();

//在TextField中绑定
TextField(
  focusNode: _commentFocus,
),

Get focus

Get focus When clicked, use FocusScope.of(context).requestFocus() to get focus

FocusScope.of(context).requestFocus(_commentFocus); // Get focus

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