Flutter 如何在呼叫屏幕时显示地图
我一直在使用map_view:^0.0.14插件在Flatter中显示地图。show()方法不返回小部件。它返回void,以便调用show()方法和display map。我想在页面加载时显示地图。我该怎么做呢Flutter 如何在呼叫屏幕时显示地图,flutter,Flutter,我一直在使用map_view:^0.0.14插件在Flatter中显示地图。show()方法不返回小部件。它返回void,以便调用show()方法和display map。我想在页面加载时显示地图。我该怎么做呢 @override Widget build(BuildContext context) { return new Scaffold( appBar: new AppBar( title: new Text('Google Maps'),
@override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text('Google Maps'),
),
body: new Center(
child: Container(
child: RaisedButton(
child: Text('Tap me'),
color: Colors.blue,
textColor: Colors.white,
elevation: 7.0,
onPressed: ( ) {
mapView.show(
new MapOptions(
mapViewType: MapViewType.normal,
showMyLocationButton: true,
showCompassButton: true,
showUserLocation: true,
initialCameraPosition: new CameraPosition(new Location(11.6643, 78.1460), 14.0),
title: 'Google Map'));
},
),
),
),
);
}
据我所知,map_view没有小部件。 您可以尝试一下,它有一个小部件,让您可以通过控制器进行平移或缩放
您首先需要在应用程序清单(Android)中指定API密钥: 在iOS上,您还必须使用键
io.flatter.embedded\u views\u preview
和值YES
将布尔值添加到Info.plist
然后,您可以将GoogleMap小部件添加到小部件树中:
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
void main() {
runApp(MaterialApp(
home: Scaffold(
appBar: AppBar(title: const Text('Google Maps demo')),
body: MapsDemo(),
),
));
}
class MapsDemo extends StatefulWidget {
@override
State createState() => MapsDemoState();
}
class MapsDemoState extends State<MapsDemo> {
GoogleMapController mapController;
@override
Widget build(BuildContext context) {
return Padding(
padding: EdgeInsets.all(15.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Center(
child: SizedBox(
width: 300.0,
height: 200.0,
child: GoogleMap(
onMapCreated: _onMapCreated,
),
),
),
RaisedButton(
child: const Text('Go to London'),
onPressed: mapController == null ? null : () {
mapController.animateCamera(CameraUpdate.newCameraPosition(
const CameraPosition(
bearing: 270.0,
target: LatLng(51.5160895, -0.1294527),
tilt: 30.0,
zoom: 17.0,
),
));
},
),
],
),
);
}
void _onMapCreated(GoogleMapController controller) {
setState(() { mapController = controller; });
}
}
导入“包装:颤振/材料.省道”;
导入“包:google_-maps_-flatter/google_-maps_-flatter.dart”;
void main(){
runApp(材料应用程序)(
家:脚手架(
appBar:appBar(标题:const Text(“谷歌地图演示”),
正文:MapsDemo(),
),
));
}
类MapsDemo扩展StatefulWidget{
@凌驾
State createState()=>MapsDemoState();
}
类MapsDemoState扩展了状态{
谷歌地图控制器;
@凌驾
小部件构建(构建上下文){
返回填充(
填充:所有边缘设置(15.0),
子:列(
mainAxisAlignment:mainAxisAlignment.space,
儿童:[
居中(
孩子:大小盒子(
宽度:300.0,
高度:200.0,
孩子:谷歌地图(
onMapCreated:_onMapCreated,
),
),
),
升起的按钮(
child:const Text(“去伦敦”),
onPressed:mapController==null?null:(){
mapController.animateCamera(CameraUpdate.newCameraPosition(
常量摄影机位置(
轴承:270.0,
目标:拉丁美洲(51.5160895,-0.1294527),
倾斜:30.0,
缩放:17.0,
),
));
},
),
],
),
);
}
void\u onMapCreated(谷歌地图控制器){
setState((){mapController=controller;});
}
}
据我所知,地图视图没有小部件。
您可以尝试一下,它有一个小部件,让您可以通过控制器进行平移或缩放
您首先需要在应用程序清单(Android)中指定API密钥: 在iOS上,您还必须使用键
io.flatter.embedded\u views\u preview
和值YES
将布尔值添加到Info.plist
然后,您可以将GoogleMap小部件添加到小部件树中:
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
void main() {
runApp(MaterialApp(
home: Scaffold(
appBar: AppBar(title: const Text('Google Maps demo')),
body: MapsDemo(),
),
));
}
class MapsDemo extends StatefulWidget {
@override
State createState() => MapsDemoState();
}
class MapsDemoState extends State<MapsDemo> {
GoogleMapController mapController;
@override
Widget build(BuildContext context) {
return Padding(
padding: EdgeInsets.all(15.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Center(
child: SizedBox(
width: 300.0,
height: 200.0,
child: GoogleMap(
onMapCreated: _onMapCreated,
),
),
),
RaisedButton(
child: const Text('Go to London'),
onPressed: mapController == null ? null : () {
mapController.animateCamera(CameraUpdate.newCameraPosition(
const CameraPosition(
bearing: 270.0,
target: LatLng(51.5160895, -0.1294527),
tilt: 30.0,
zoom: 17.0,
),
));
},
),
],
),
);
}
void _onMapCreated(GoogleMapController controller) {
setState(() { mapController = controller; });
}
}
导入“包装:颤振/材料.省道”;
导入“包:google_-maps_-flatter/google_-maps_-flatter.dart”;
void main(){
runApp(材料应用程序)(
家:脚手架(
appBar:appBar(标题:const Text(“谷歌地图演示”),
正文:MapsDemo(),
),
));
}
类MapsDemo扩展StatefulWidget{
@凌驾
State createState()=>MapsDemoState();
}
类MapsDemoState扩展了状态{
谷歌地图控制器;
@凌驾
小部件构建(构建上下文){
返回填充(
填充:所有边缘设置(15.0),
子:列(
mainAxisAlignment:mainAxisAlignment.space,
儿童:[
居中(
孩子:大小盒子(
宽度:300.0,
高度:200.0,
孩子:谷歌地图(
onMapCreated:_onMapCreated,
),
),
),
升起的按钮(
child:const Text(“去伦敦”),
onPressed:mapController==null?null:(){
mapController.animateCamera(CameraUpdate.newCameraPosition(
常量摄影机位置(
轴承:270.0,
目标:拉丁美洲(51.5160895,-0.1294527),
倾斜:30.0,
缩放:17.0,
),
));
},
),
],
),
);
}
void\u onMapCreated(谷歌地图控制器){
setState((){mapController=controller;});
}
}
能否为您的答案提供更多详细信息或文档?我已使用软件包自述文件中提供的文档更新了答案。谢谢。它工作正常,但我想捕获marker事件。您能为我们提供更多详细信息或您的答案的文档吗?我已经用软件包自述中提供的文档更新了答案。谢谢。它工作正常,但我想捕捉标记事件。
import 'package:flutter/material.dart';
import 'package:google_maps_flutter/google_maps_flutter.dart';
void main() {
runApp(MaterialApp(
home: Scaffold(
appBar: AppBar(title: const Text('Google Maps demo')),
body: MapsDemo(),
),
));
}
class MapsDemo extends StatefulWidget {
@override
State createState() => MapsDemoState();
}
class MapsDemoState extends State<MapsDemo> {
GoogleMapController mapController;
@override
Widget build(BuildContext context) {
return Padding(
padding: EdgeInsets.all(15.0),
child: Column(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Center(
child: SizedBox(
width: 300.0,
height: 200.0,
child: GoogleMap(
onMapCreated: _onMapCreated,
),
),
),
RaisedButton(
child: const Text('Go to London'),
onPressed: mapController == null ? null : () {
mapController.animateCamera(CameraUpdate.newCameraPosition(
const CameraPosition(
bearing: 270.0,
target: LatLng(51.5160895, -0.1294527),
tilt: 30.0,
zoom: 17.0,
),
));
},
),
],
),
);
}
void _onMapCreated(GoogleMapController controller) {
setState(() { mapController = controller; });
}
}