flutter - 将TextEditingController作为参数传递给函数？

Question

我使用函数在flutter中创建了两个文本字段，但是我想为每个文本字段使用两个不同的TextEditingControllers。如何将TextEditingController作为参数传递给函数？

         Widget fieldmaker(String title) {
        return Container(
          width: double.infinity,
          height: 50,
          padding: EdgeInsets.symmetric(
            horizontal: 10,
          ),
          child: TextField(
            controller: ,
            decoration: InputDecoration(
              hintText: title,
              hintStyle: TextStyle(
                fontSize: 20,
              ),
              contentPadding: EdgeInsets.all(2),
            ),
          ),
        );
     }
final amountcontroller=TextEditingController();
  final titlecontroller=TextEditingController();

        Widget build(BuildContext context) {
      return Column(
        children: [
          fieldmaker('Title'),
          fieldmaker('Amount'),
        ],
      );
    }

Answer 1

您可以将其作为参数传递给函数:

         Widget fieldmaker(String title,TextEditingController controller) {
        return Container(
          width: double.infinity,
          height: 50,
          padding: EdgeInsets.symmetric(
            horizontal: 10,
          ),
          child: TextField(
            controller: controller,
            decoration: InputDecoration(
              hintText: title,
              hintStyle: TextStyle(
                fontSize: 20,
              ),
              contentPadding: EdgeInsets.all(2),
            ),
          ),
        );
     }
final amountcontroller=TextEditingController();
  final titlecontroller=TextEditingController();

        Widget build(BuildContext context) {
      return Column(
        children: [
          //pass them to the function from here
          fieldmaker('Title',titlecontroller), 
          fieldmaker('Amount',amountcontroller),
        ],
      );
    }