在Flutter中从地图中获取数据

Question

如何访问问题和答案?

var questions = [
{
'questionText': 'What's your favorite color?',
'answers': ['Black', 'Red', 'Green', 'White'],
},
{
'questionText': 'What's your favorite animal?',
'answers': ['Rabbit', 'Snake', 'Elephant', 'Lion'],
},
{
'questionText': 'Who's your favorite instructor?',
'answers': ['Max', 'Max', 'Max', 'Max'],
},

];

我试着:

questions.elementAt(1)['questionText'] 
questions[_questionIndex]['questionText']

但两者都不起作用。它说:参数类型是Object?'不能分配给参数类型'String'。

Answer 1

就像这样使用索引。

String question = questions[1]['questionText'].toString();