基本上，我有一个带有for filename in os.listdir(path):
if filename.endswith(".docx"):
file = "C:\\Users\\files\\" + filename
print(file)
doc = Document(file)
for para in doc.paragraphs:
text = para.text
if len(re_highlight.findall(text)) > 0:
matches = re_highlight.finditer(text)
para.text = ''
p3 = 0
for match in matches:
p1 = p3
p2, p3 = match.span()
para.add_run(text[p1:p2])
run = para.add_run(text[p2:p3])
run.font.highlight_color = WD_COLOR_INDEX.YELLOW
para.add_run(text[p3:])
doc.save(file)
的主窗口小部件，当屏幕改变时，我将其传递给新屏幕。然后，每个屏幕都有其自己的this._bottomNavigationBar和Scaffold。
听起来不错，但不能正常工作。
当我单击以更改所选选项时，它会更改屏幕，但是所选图标保持不变。如果我打印AppBar，它将正常更改索引。我不希望发生的事情，因为当我声明this.currentIndex时，this._bottomNavigationBar属性的定义如下：currentIndex，因此，如果图标未更改，则变量也不会。
因此，我意识到我可能原谅了onTap上的currentIndex: this.currentIndex方法，但事实并非如此。
我只是不知道为什么会这样。我认为这可能与setState()“范围”有关？我将在下面保留我的代码以更好地说明这一点。
setStateimport 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
import 'landing.dart';
const List<BottomNavigationBarItem> homeScreenNavbarItems = [
BottomNavigationBarItem(
icon: Icon(FontAwesomeIcons.home),
title: Text(''),
),
BottomNavigationBarItem(
icon: Icon(Icons.search),
title: Text(''),
),
BottomNavigationBarItem(
icon: Icon(Icons.bookmark),
title: Text(''),
),
BottomNavigationBarItem(
icon: Icon(Icons.person),
title: Text(''),
),
];
class Home extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return _HomeState();
}
}
class _HomeState extends State<Home> {
int currentIndex = 1;
BottomNavigationBar _bottomNavigationBar;
List homeScreens;
void onNavbarTapped(int index) {
setState(() {
this.currentIndex = index;
});
}
@override
void initState() {
this._bottomNavigationBar = BottomNavigationBar(
showSelectedLabels: false,
showUnselectedLabels: false,
selectedItemColor: Color(0xFF000000),
unselectedItemColor: Color(0xFFb3b3b3),
currentIndex: this.currentIndex,
items: homeScreenNavbarItems,
onTap: this.onNavbarTapped,
);
this.homeScreens = [
LandingScreen(this._bottomNavigationBar),
Scaffold(
bottomNavigationBar: this._bottomNavigationBar,
)
];
super.initState();
}
@override
Widget build(BuildContext context) {
print(this.currentIndex);
return this.homeScreens.elementAt(this.currentIndex);
}
}
import 'package:flutter/material.dart';
import 'package:font_awesome_flutter/font_awesome_flutter.dart';
class LandingScreen extends StatefulWidget {
final BottomNavigationBar _bottomNavigationBar;
LandingScreen(this._bottomNavigationBar);
@override
State<StatefulWidget> createState() {
return _LandingScreenState();
}
}
class _LandingScreenState extends State<LandingScreen> {
@override
Widget build(BuildContext context) {
return DefaultTabController(
length: 3,
child: Scaffold(
appBar: AppBar(
title: Text('a'),
bottom: TabBar(
tabs: [
Tab(icon: Icon(Icons.directions_car)),
Tab(icon: Icon(Icons.directions_transit)),
Tab(icon: Icon(Icons.directions_bike)),
],
),
),
body: TabBarView(
children: [
Icon(Icons.directions_car),
Icon(Icons.directions_transit),
Icon(Icons.directions_bike),
],
),
bottomNavigationBar: widget._bottomNavigationBar,
),
);
}
}
文件只是调用main.dart小部件，因此我没有将其放在此处。