当我在颤抖中按下RaisedButton时，我想从TextFormField中获取值

Question

TextFormField has it's own property to perform actions, called "onFieldSubmited". TextFormField具有执行操作的专有属性，称为“ onFieldSubmited”。

But i want to get the value from the TextFormField, when i press a RaisedButton or something. 但是当我按下RaisedButton之类的东西时，我想从TextFormField中获取值。

How can i do it? 我该怎么做？

Answer 1

All you need is a TextEditingController 您只需要一个TextEditingController

There is a cookbook for this in flutter's own website. 在flutter自己的网站上有一本食谱。 Wonder how you missed it. 想知道你怎么错过它。

Answer 2

Use TextEditingController to get the value of a specific TextField. 使用TextEditingController获取特定TextField的值。

[...]
TextEditingController controllername = TextEditingController();
[...]
TextField(
controller: controllername, //...Rest of the code 
)

Use the controllername.value to get the current value of a Textfield for that particular moment. 使用controllername.value获取该特定时刻的文本字段的当前值。