我有一个大段,很多单词必须有工具提示消息,并且当您单击这些单词中的任何一个时,都应该出现工具提示消息。
我尝试使用RichText小部件,其中包含许多TextSpan
子项,如下所示:
RichText(
text: TextSpan(
children: <TextSpan>[
TextSpan(text: "Welcome to"),
TextSpan(text: "Flutter"),
...
]),
),
当我单击TextSpan
时,我需要显示工具提示文本我试图用TextSpan
小部件包装Tooltip
RichText(
text: TextSpan(
children: <TextSpan>[
TextSpan(text: "Welcome to"),
...
Tooltip(
message: "any text here",
child: TextSpan(text: "Flutter"),
),
...
]),
),
但是这是不可能的,因为孩子只能是TextSpan
。
有人对如何实现此要求有想法吗?
+更新:
我尝试做您需要做的事,但是didint可以工作,因为SpanText仅能工作,但是如果您检查下面的代码,我会为您工作:)
Center(
// Center is a layout widget. It takes a single child and positions it
// in the middle of the parent.
child: Column(
// Column is also a layout widget. It takes a list of children and
// arranges them vertically. By default, it sizes itself to fit its
// children horizontally, and tries to be as tall as its parent.
//
// Invoke "debug painting" (press "p" in the console, choose the
// "Toggle Debug Paint" action from the Flutter Inspector in Android
// Studio, or the "Toggle Debug Paint" command in Visual Studio Code)
// to see the wireframe for each widget.
//
// Column has various properties to control how it sizes itself and
// how it positions its children. Here we use mainAxisAlignment to
// center the children vertically; the main axis here is the vertical
// axis because Columns are vertical (the cross axis would be
// horizontal).
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget>[
Text(
'You have pushed the button this many times:',
),
RichText(
text: TextSpan(
style: TextStyle(color: Colors.black),
children: <TextSpan>[
TextSpan(text: "Welcome to"),
]),
),
Tooltip(
message: 'any text here',
child: Text('Flutter'),
),
]
),
),
,
使用TextSpan,您有2种方法:使用或不使用children
参数。
Widget _toolTipSimple() {
return Center(
child: Tooltip(
message: "Flutter",
child: RichText(
text: TextSpan(
text: "Welcome to", style: TextStyle(fontSize: 70)),
),
),
);
}
这是一个没有Tooltip的复杂版本,但是它可以处理对特定单词的单击:
Widget _snackBarTextSpanChildren(BuildContext context) {
return Center(
child: RichText(
textAlign: TextAlign.center,
text: TextSpan(
children: [
TextSpan(text: "Welcome to ", style: TextStyle(fontSize: 70)),
TextSpan(
text: "Flutter",
style: TextStyle(fontSize: 70),
recognizer: TapGestureRecognizer()..onTap = () {
Scaffold.of(context).showSnackBar(SnackBar(content: Text('Hello!')));
}),
],
),
),
);
}
这一项的结果如下: