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hyzp_ybqx-Commit001：代码刚转换好，编译通过

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WinUser01
2021-12-09 20:24:36 +08:00
commit 8c74b14e5c
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lib/pages/Works/DWDT/basic_map.dart
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import 'package:flutter/material.dart';
import 'package:flutter_bmfbase/BaiduMap/bmfmap_base.dart';
import 'package:flutter_bmfmap/BaiduMap/bmfmap_map.dart';
import 'package:flutter_screenutil/screen_util.dart';
import 'package:hyzp_ybqx/components/commonFun.dart';
import 'package:hyzp_ybqx/components/hyxx_data_handle.dart';
import '../../../components/dioFun.dart';
import 'dwInfoDialog.dart';
import 'dwInfo_data.dart';
class BasicMap extends StatefulWidget {
BasicMap({this.hyshlx = 'dwdt', this.title = "点位地图"});
String hyshlx;
String title;
@override
_BasicMapState createState() => _BasicMapState();
}
class _BasicMapState extends State<BasicMap> {
Size screenSize;
BMFMapOptions mapOptions;
BMFMapController myMapController;
try_setState() {
try {
setState(() {});
} catch (e) {
print('setState(() {})异常：${e}');
}
}
@override
void initState() {
super.initState();
mapOptions = BMFMapOptions(
//center: BMFCoordinate(39.965, 116.404),//北京市
//30 116.395645038,39.9299857781 北京-北京市
//center: BMFCoordinate(34.263161, 108.948024), //西安市
/// 设置地图显示中心点坐标，必须是百度官方发布的百度地图-城市中心点坐标
/// 为宜宾市白塔山： BMFCoordinate(104.644079, 28.77914)
//center: BMFCoordinate(104.644079, 28.77914), //宜宾市白塔山，无效，经纬度搞反了
//52 104.633019062,28.7696747963 四川省-宜宾市
///Flutter百度地图采坑注意：
// BMFCoordinate(this.latitude, this.longitude);
// BMFCoordinate 构造方法参数是纬度在前、经度在后，latitude 纬度，longitude 经度
// 百度官方发布的城市中心点坐标是经度在前、纬度在后，必须对调才行，否则无法正确显示指定城市的地图
// 比如：//52 104.633019062,28.7696747963 四川省-宜宾市
// 必须将经纬度对调才行：center: BMFCoordinate(28.7696747963, 104.633019062), //四川省-宜宾市
//center: BMFCoordinate(28.7696747963, 104.633019062), //四川省-宜宾市
center: BMFCoordinate(28.77914, 104.644079),
//宜宾市白塔山
//宜宾市白塔山
showMapPoi: _showMapPoi,
//设定地图是否显示底图poi标注(不包含室内图标注)，默认true
zoomLevel: g_zoomLevel,
maxZoomLevel: 16,
minZoomLevel: 12,
mapPadding: BMFEdgeInsets(left: 30, top: 0, right: 30, bottom: 0),
//showMapScaleBar: true,
);
iPage = 0;
listDwspGetList2.clear();
///从接口 mapHyshlx[hyshlx]['api'] 获取第 iPage 页的列表数据，返回 list
getPageList(theHyshlx: widget.hyshlx, bShowToast: false).then((value) async {
//mapHyshlx[hyshlx]['api'];
listDwspGetList2 = value;
listDwinfoGetList2 = value;
//try_setState();
//按照用户选择的_selectedValue、_descending对listDwspGetList2进行排序，并延时更新
// int len = listDwspGetList2.length;
// for (int i = 0; i < len; i++) {
// getDwspUrl(index: listDwspGetList2[i]['id']).then((value) {
// listDwspGetList2[i]['dwsp_ok'] = true;
// if (value == '' || value == null) {
// listDwspGetList2[i]['dwsp_ok'] = false;
// }
// setState(() {});
// });
// }
});
//为播放点位视频读取数据
//在 Page1_Works 页面，获取 startGetStatisData() 时，便已经获取了 listDwinfoGetList2
// ///从接口 mapHyshlx[hyshlx]['api'] 获取第 iPage 页的列表数据，返回 list
// getPageList(theHyshlx: 'dwxx', bShowToast: false).then((value) async {
// //mapHyshlx[hyshlx]['api'];
// listDwspGetList2 = value;
//
// //按_selectedValue排序，升序
// listDwspGetList2
// .sort((a, b) => (a[mapWzxxDataText['点位编号']]).compareTo(b[mapWzxxDataText['点位编号']]));
// });
}
//设定地图是否显示底图poi标注(不包含室内图标注)，默认true
bool _showMapPoi = true;
/// 创建完成回调
void onBMFMapCreated(BMFMapController controller) async {
myMapController = controller;
/// 设置地图状态改变完成后回调接口
myMapController?.setMapStatusDidChangedCallback(callback: () {
myMapController.getZoomLevel().then((zoomLevel) {
print('Current zoomLevel = $zoomLevel');
g_zoomLevel = zoomLevel; //缩放倍数
getListBMFMarker().then((value) async {
///先清除地图上的所有Marker
await myMapController?.removeMarkers(g_listBMFMarker);
///批量添加定位标记
await myMapController?.addMarkers(g_listBMFMarker);
///批量添加文字标记，作为定位标记的说明文字
for (var text in g_listBMFText) {
//text.setMethodChannel(MethodChannel());
await myMapController?.addText(text);
}
//加在此处无效
//点击Marker时会回调BaiduMap.OnMarkerClickListener，监听器的实现方式示例如下：
/// 地图marker点击回调
//myMapController?.setMapClickedMarkerCallback(callback: _markerCallback);
});
setState(() {});
});
});
/// 地图加载回调
myMapController?.setMapDidLoadCallback(callback: () {
print('mapDidLoad-地图加载完成');
});
///批量添加定位标记
getListBMFMarker().then((value) {
myMapController?.addMarkers(g_listBMFMarker);
///批量添加文字标记，作为定位标记的说明文字
for (var text in g_listBMFText) {
myMapController?.addText(text);
}
///1、底图标注 点击回调：
// 点中底图标注后会回调此接口
myMapController?.setMapOnClickedMapPoiCallback(callback: (BMFMapPoi mapPoi) async {
print('mapPoi = ${mapPoi.toMap().toString()}');
myMapController.getZoomLevel().then((value) {
g_zoomLevel = value;
print('myMapController.getZoomLevel() = ${value.toString()}');
});
//I/flutter (11895): mapPoi = {text: 森林小区, pt: {latitude: 28.765632464539106, longitude: 104.60481101089357}, uid: ea4cae6307501c5f4d2fdfe9}
onMarkerClicked(mapPoi.pt);
});
///2、底图空白处 点击回调
// 点中底图空白处会回调此接口
/// coordinate 经纬度
myMapController?.setMapOnClickedMapBlankCallback(callback: (BMFCoordinate coordinate) {
print('点击底图空白处响应：coordinate = ${coordinate.toMap().toString()}');
myMapController.getZoomLevel().then((value) {
g_zoomLevel = value;
print('myMapController.getZoomLevel() = ${value.toString()}');
});
onMarkerClicked(coordinate);
});
//3、Marker 点击响应，点击文本标签没反应，加在此处有效
//点击Marker时会回调BaiduMap.OnMarkerClickListener，监听器的实现方式示例如下：
/// 地图marker点击回调
myMapController?.setMapClickedMarkerCallback(callback: (String id, dynamic extra) async {
myMapController.getZoomLevel().then((value) {
g_zoomLevel = value;
print('myMapController.getZoomLevel() = ${value.toString()}');
});
print('点击 Marker 标签响应：id = ${id}');
//百度地图的脑残设计，需要在添加BMFMarker时自己保存ID
//g_listBMFMarkerIDmap.add({marker.getId(): listDwinfo[i]["id"]});
print('Marker的 标签响应：id = ${listDwinfoGetList2[g_map_BMFMarkerID_dwIndex[id]]["dwmc"]}');
_markerCallback(id, 'test'); //响应用户点击
});
});
//批量添加定位标记
}
Map mapBMFTextCoordinateList = {};
//1、江北振兴大道 估算坐标区域
// 左上角 coordinate = {latitude: 28.807221307340154, longitude: 104.60667948635371}
// 右下角 coordinate = {latitude: 28.805069070677582, longitude: 104.62110627283919}
// listMarkerCoordinate是包含13个Map点位标记的List，每个Map元素包括4个子元素，
// 分别是左上角坐标（纬度 latitude，经度 longitude）、右下角坐标（纬度 latitude，经度 longitude）
List listMarkerCoordinate1 = [
{
'topLatitude': 28.807221307340154,
'leftLongitude': 104.60667948635371,
'bottomLatitude': 28.805069070677582,
'rightLongitude': 104.62110627283919
}
];
//12、大麦坝
//左上角 coordinate = coordinate = {latitude: 28.8044360513459, longitude: 104.63110441316194}
//右下角 coordinate = coordinate = {latitude: 28.803415299489192, longitude: 104.63598221207951}
// listMarkerCoordinate是包含13个Map点位标记的List，每个Map元素包括4个子元素，
// 分别是左上角坐标（纬度 latitude，经度 longitude）、右下角坐标（纬度 latitude，经度 longitude）
//15倍放大时设置，地图放到18倍时，点击没有问题，
//缩小到13倍时，不行了
//15倍放大
//左下角coordinate = {latitude: 28.79913436190729, longitude: 104.66847392236468}
//左上角coordinate = {latitude: 28.806612039019615, longitude: 104.62731356391107}
List listMarkerCoordinate = [
{
'topLatitude': 28.80778309701711,
'leftLongitude': 104.63028695514814,
'bottomLatitude': 28.79801859852449,
'rightLongitude': 104.66974951618843
}
];
//以13倍放大时的数据设置
//左下角coordinate = {latitude: 28.80399293550177, longitude: 104.63028695514814}
//左上角coordinate = {latitude: 28.79801859852449, longitude: 104.66974951618843}
// 中国在世界地图上的经纬度范围？ // 2019-04-14 · 把复杂的事情简单说给你听
// top 北起黑龙江省漠河以北的黑龙江主航道的中心线 北纬 53°31′
// bottom 南达南海南沙群岛的曾母内暗沙 北纬 4°15′
// left 西起新容疆维吾尔自治区乌恰县以西的帕米尔高原 东经 73°
// right 东至黑龙江省抚远县境内的黑龙江与乌苏里江汇合处 东经 135°。
//
// 中国位于地球的东半球北半部、亚欧大陆的东南部、亚洲的东部和中部、太平洋的西岸。
int i = 0;
//纬度 latitude，经度 longitude
Future onMarkerClicked(BMFCoordinate coordinate) {
//double scale = g_zoomLevel / 15;
if (listMarkerCoordinate[i]['topLatitude'] > coordinate.latitude &&
coordinate.latitude > listMarkerCoordinate[i]['bottomLatitude'] &&
listMarkerCoordinate[i]['rightLongitude'] > coordinate.longitude &&
coordinate.longitude > listMarkerCoordinate[i]['leftLongitude']) {
_markerCallback('123', 'test');
} //响应用户点击
}
bool isDoing = false;
Future _markerCallback(String id, dynamic extra) async {
if (isDoing) {
print('正在处理中...，不能重复进入');
return;
}
print('开始处理');
print('mapClickedMarker--\n marker = $id');
//已经能够弹出Flutter对话框。但只有点击 Marker 标签有反应，点击文本标签没反应。
//百度地图的脑残设计，需要在添加BMFMarker时自己保存ID
//g_listBMFMarkerIDmap.add({marker.getId(): listDwinfo[i]["id"]});
int dwIndex = g_map_BMFMarkerID_dwIndex[id];
print('Marker的 标签响应：id = ${listDwinfoGetList2[dwIndex]["dwmc"]}');
getStatisData(statisType: 'zptj', ip: listDwinfoGetList2[dwIndex]['dwip'])
.then((mapStatisData) async {
String title =
listDwinfoGetList2[dwIndex]["id"].toString() + '、' + listDwinfoGetList2[dwIndex]["dwmc"];
List listCoordinate = listDwinfoGetList2[dwIndex]["dwzb"].trim().split('|');
String content = listDwinfoGetList2[dwIndex]["dwms"] +
'。\n经度：${listCoordinate[0]}\n纬度：${listCoordinate[1]}' +
'\n今日抓拍：${mapStatisData['today']['total']}， 累计抓拍：${mapStatisData['all']}' +
'\n运行状态：${listDwinfoGetList2[dwIndex]['dwzt']}';
await Navigator.of(context)
.push(
PageRouteBuilder(
opaque: false,
pageBuilder: (context, animation, secondaryAnimation) =>
dwInfoDialog(id: id, dwIndex: dwIndex, title: title, content: content),
),
)
.then((value) async {
print('value = $value');
if (value) {
print('用户已确认，开始处理推送交警！');
//return;
} else {
print('用户取消了推送交警操作');
}
});
setState(() {
// _markerID = id;
// _action = "点击";
});
isDoing = false;
});
}
double _widthBtn = 45;
double _heightBtn = 45;
double _edge = 16;
@override
Widget build(BuildContext context) {
screenSize = MediaQuery.of(context).size;
return Scaffold(
appBar: PreferredSize(
preferredSize: Size.fromHeight(ScreenUtil().setHeight(173)), // 设置appBar高度
// 设置appBar高度
child: AppBar(
automaticallyImplyLeading: false,
centerTitle: true,
titleSpacing: 0.0,
//设置title的左边距
flexibleSpace: Container(
//SizedBox(height: ScreenUtil().statusBarHeight), //显示顶部状态栏
// SizedBox(height: ScreenUtil().setHeight(10)), //显示顶部状态栏
padding: EdgeInsets.only(top: ScreenUtil().statusBarHeight), //留出顶部状态栏高度
child: Container(
//height: ScreenUtil().setHeight(173),
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.centerLeft,
end: Alignment.centerRight,
colors: [
Color.fromRGBO(12, 186, 156, 1),
Color.fromRGBO(39, 127, 235, 1),
],
),
),
// decoration: BoxDecoration(
// gradient: LinearGradient(colors: [
// Color(0xFF0018EB),
// Color(0xFF01C1D9),
// ], begin: Alignment.bottomCenter, end: Alignment.topCenter),
// ),
),
),
title: Row(
mainAxisAlignment: MainAxisAlignment.start,
children: [
getIconAndTextButton(
iconColor: Colors.white,
iconData: Icons.chevron_left_outlined,
onPress: () {
Navigator.pop(context);
},
),
Expanded(
child: Text(widget.title + '（${g_zoomLevel}倍）',
style: TextStyle(color: Colors.white, fontSize: 20),
textAlign: TextAlign.center,
overflow: TextOverflow.ellipsis),
),
SizedBox(width: 10),
],
),
actions: <Widget>[
Row(
children: [
//SizedBox(width: ScreenUtil().setWidth(45)),
InkWell(
onTap: () {
//Navigator.pushNamed(context, '/registerFirst');
this.setState(() {
_showMapPoi = !_showMapPoi;
myMapController?.updateMapOptions(BMFMapOptions(showMapPoi: _showMapPoi));
});
},
child: Container(
alignment: Alignment(0, 0),
//width: 150,
child: Row(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Text('标注：', style: TextStyle(fontSize: 20, color: Colors.white)),
Container(
alignment: Alignment(0, 0),
height: 25,
width: 25,
padding: EdgeInsets.only(top: ScreenUtil().setHeight(6)),
child: _showMapPoi
? Icon(Icons.check_box, color: Colors.white)
: Icon(Icons.check_box_outline_blank, color: Colors.white),
),
SizedBox(width: ScreenUtil().setWidth(65)),
],
),
),
),
],
),
],
),
),
body: Stack(
children: <Widget>[
Align(
alignment: Alignment.center,
child: Container(
height: screenSize.height,
width: screenSize.width,
child: BMFMapWidget(
onBMFMapCreated: (controller) {
onBMFMapCreated(controller);
},
mapOptions: mapOptions,
),
),
),
Align(
alignment: Alignment(1, 1),
child: Padding(
padding: EdgeInsets.only(bottom: 5, right: _edge),
child: Container(
width: _widthBtn,
height: _heightBtn * 2 + 3,
decoration: new BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.all(Radius.circular(2.0)),
border: new Border.all(width: 1, color: Colors.blue),
),
child: Column(
children: [
Container(
width: _widthBtn,
height: _heightBtn,
//color: Colors.white,
child: InkWell(
// child: Icon(Icons.my_location_outlined, color: Colors.black45),
child: Icon(Icons.add, color: g_zoomLevel < 16 ? Colors.blue : Colors.grey),
onTap: g_zoomLevel < 16
? () {
//放大按钮，缩放限制12-16
if (g_zoomLevel < 16) {
g_zoomLevel++;
myMapController
?.updateMapOptions(BMFMapOptions(zoomLevel: g_zoomLevel));
}
}
: null,
),
),
Divider(height: 1.0, color: Colors.blue),
Container(
width: _widthBtn,
height: _heightBtn,
//color: Colors.white,
child: InkWell(
// child: Icon(Icons.my_location_outlined, color: Colors.black45),
child: Icon(Icons.horizontal_rule,
color: g_zoomLevel > 12 ? Colors.blue : Colors.grey),
onTap: g_zoomLevel > 12
? () {
//缩小按钮，缩放限制12-16
g_zoomLevel--;
myMapController
?.updateMapOptions(BMFMapOptions(zoomLevel: g_zoomLevel));
}
: null,
),
),
],
),
),
),
),
Align(
alignment: Alignment(-1, 1),
child: Padding(
padding: EdgeInsets.only(bottom: 50, left: _edge),
child: Container(
decoration: new BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.all(Radius.circular(2.0)),
border: new Border.all(width: 1, color: Colors.blue),
),
width: _widthBtn,
height: _heightBtn,
//color: Colors.white,
child: InkWell(
// child: Icon(Icons.my_location_outlined, color: Colors.black45),
// 没有
child: Icon(Icons.radio_button_checked_rounded,
color: g_zoomLevel == 14 ? Colors.grey : Colors.blue),
onTap: () {
g_zoomLevel = 14;
//还原按钮，重新设置中心位置、缩放级别
//myMapController.setCenterCoordinate(coordinate, animated);
//没有myMapController.getCenterCoordinate，无法简单地获取当前中心坐标;
myMapController?.updateMapOptions(
BMFMapOptions(center: BMFCoordinate(28.77914, 104.644079)));
myMapController?.updateMapOptions(BMFMapOptions(zoomLevel: g_zoomLevel));
},
),
),
),
),
],
),
);
}
}
lib/pages/Works/DWDT/dwInfoDialog.dart
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import 'package:flutter/material.dart';
import 'package:hyzp_ybqx/components/dioFun.dart';
//import 'package:hyzp_ybqx/widget/player_pro.dart';
import '../../../components/commonFun.dart';
//确认对话框
class dwInfoDialog extends Dialog {
dwInfoDialog({@required this.id, this.title = "", @required this.dwIndex, this.content});
int dwIndex;
String id;
String title;
String content;
bool ret = false;
@override
Widget build(BuildContext context) {
Size mediaSize = MediaQuery.of(context).size;
return WillPopScope(
child: Material(
type: MaterialType.transparency,
child: Container(
padding: EdgeInsets.only(top: 116),
alignment: Alignment(0, -1),
color: Colors.black12,
child: Container(
// height: 260,
// width: 300,
height: mediaSize.height * 0.51,
width: mediaSize.width * 0.95,
//color: Colors.white, //Cannot provide both a color and a decoration
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(color: Colors.blue, width: 2.0),
borderRadius: BorderRadius.all(
Radius.circular(5),
),
),
child: Column(
children: <Widget>[
Padding(
padding: EdgeInsets.fromLTRB(10, 10, 10, 0),
child: Stack(
children: <Widget>[
Align(
alignment: Alignment.center,
child: Text(
"${this.title}",
style: TextStyle(
fontSize: 20.0,
),
),
),
Align(
alignment: Alignment.centerRight,
child: InkWell(
child: Icon(Icons.close),
onTap: () {
getingDwVideo = false;
Navigator.pop(context, ret);
},
),
)
],
),
),
Divider(color: Colors.blue),
Container(
padding: EdgeInsets.fromLTRB(20, 10, 20, 10),
width: double.infinity,
height: mediaSize.height * 0.28,
child: SingleChildScrollView(
child: Text(content, style: TextStyle(fontSize: 18.0, color: Colors.blue)),
),
),
SizedBox(height: 10),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
RaisedButton(
onPressed: () {
ret = true;
//getDwspUrl(index: dwIndex, context: context);
getDwspUrlNew(indexRecord: dwIndex, context: context);
},
child: Text("视频"),
),
RaisedButton(
onPressed: () async {
ret = true;
getingDwVideo = false;
Navigator.pop(context, ret); //关闭弹框，返回sRet
},
child: Text("确认"),
),
RaisedButton(
child: Text("取消"),
onPressed: () async {
getingDwVideo = false;
Navigator.pop(context, ret); //关闭弹框，返回sRet
},
)
],
),
],
),
),
),
),
onWillPop: () {
// 屏蔽点击返回键的操作
getingDwVideo = false;
Navigator.pop(context, ret);
},
);
}
}
lib/pages/Works/DWDT/dwInfo_data.dart
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import 'package:flutter/material.dart';
import 'package:flutter_bmfbase/BaiduMap/bmfmap_base.dart';
import 'package:flutter_bmfmap/BaiduMap/bmfmap_map.dart';
import 'package:hyzp_ybqx/components/hyxx_data_handle.dart';
///批量添加定位标记
bool enable = true;
bool dragable = true;
int g_zoomLevel = 14; //缩放倍数
///批量添加定位标记
List<BMFMarker> g_listBMFMarker = [];
Map g_map_BMFMarkerID_dwIndex = {};
List<BMFText> g_listBMFText = [];
//https://www.cnblogs.com/ybmj/p/14408263.html
//百度地图的脑残设计，附上代码，为后来的码农们...
Future getListBMFMarker({List listDwinfo}) async {
if (null == listDwinfo) {
listDwinfo = listDwinfoGetList2;
}
//double _scale = 9900 / 10000; //自己控制off_latitude、off_longitude效果不好
// BMFMarker marker1 = BMFMarker(
// position: BMFCoordinate(28.807061, 104.607091),
// title: '1、江北振兴大道',
// subtitle: 'test',
// identifier: 'flutter_marker',
// icon: 'assets/images/location.png',
// enabled: enable,
// draggable: dragable);
int len = listDwinfo.length;
for (int i = 0; i < len; i++) {
BMFMarker marker = BMFMarker(
position: getBMFCoordinate(listDwinfo[i]["dwzb"]),
title: '${listDwinfo[i]["id"].toString()}、${listDwinfo[i]["dwmc"]}',
subtitle: 'test',
identifier: '${listDwinfo[i]["id"].toString()}、${listDwinfo[i]["dwmc"]}',
icon: 'assets/images/location.png',
/// 默认情况下, annotation view的中心位于annotation的坐标位置，
/// 可以设置centerOffset改变view的位置，正的偏移使view朝右下方移动，负的朝左上方，单位是像素
/// 目前Android只支持Y轴设置偏移量对应SDK的 yOffset(int yOffset) 方法
/// 添加标记 BMFMarker 百度官方有 centerOffset 偏移参数，
/// 文本标签 BMFText 官方没有 centerOffset 偏移参数，我取消了 BMFMarker 的偏移。你看这样行吗？
/// 按公司要求，为更准确定位，取消 BMFMarker 的偏移
centerOffset: BMFPoint(0, 0),
//标记中心偏移
enabled: enable,
draggable: dragable);
// 百度地图的脑残设计，用Flutter添加多个BMFMarker时，必须在添加BMFMarker时自己保存ID，
// 否则响应点击时无法确定用户点击的是哪个定位标注
// 代码不会自动返回，也没有任何文档说明，是花了一天时间搜索网络无果，是自己翻江倒海摸索出来的
// 下一句是关键代码，将添加的每个BMFMarker的id保存到一个map中，
// 这样在用setMapClickedMarkerCallback添加BMFMarker的通用响应函数中，便可以根据id号来判断用户点击的是哪一个定位标注
g_map_BMFMarkerID_dwIndex[marker.getId()] = i;
g_listBMFMarker.add(marker);
g_listBMFText.add(BMFText(
text: '${listDwinfo[i]["id"].toString()}、${listDwinfo[i]["dwmc"]}',
//纬度偏移-上下 off_latitude, 经度偏移-左右 off_longitude
//已经在zoomLevel = 15时调整好定位标记与文本标记的相对位置
// ，当地图缩放时，会发生位置变化，必须使用 Provider 或者 EventBus 进行跟踪更新
//https://time.geekbang.org/column/article/131890
//老师,provider、eventBus的用途有啥区别吗，都可以做状态的通知
// 作者回复: Provider 主要是用来做数据读写共享；event_bus主要是用来做数据状态通知、实现组件间单向数据传递。
//如果我们的应用足够简单，数据流动的方向和顺序是清晰的，我们只需要将数据映射成视图就可以了。
// 作为声明式的框架，Flutter 可以自动处理数据到渲染的全过程，通常并不需要 Provider 状态管理。
// position: getBMFCoordinate(listDwinfo[i]["dwzb"],
// off_latitude: -0.0002 * g_zoomLevel * _scale,
// off_longitude: -0.00009 * g_zoomLevel * _scale),
position: getBMFCoordinate(listDwinfo[i]["dwzb"]),
//自己控制off_latitude、off_longitude效果不好
bgColor: Colors.yellow,
fontColor: Colors.black,
fontSize: 35,
// typeFace:
// BMFTypeFace(familyName: BMFFamilyName.sMonospace, textStype: BMFTextStyle.BOLD_ITALIC),
typeFace: BMFTypeFace(familyName: BMFFamilyName.sMonospace, textStype: BMFTextStyle.BOLD),
alignY: BMFVerticalAlign.ALIGN_TOP,
alignX: BMFHorizontalAlign.ALIGN_LEFT,
rotate: 0.0,
zIndex: 99));
}
}
//文字覆盖物
// 文字（Text）在地图上也是一种覆盖物，由BMFText类定义,示例代码如下：
//
// /// text经纬度信息
// BMFCoordinate position = new BMFCoordinate(39.73235, 116.350338);
//
// /// 构造text
// BMFText bmfText = BMFText(
// text: 'hello world',
// position: position,
// bgColor: Colors.blue,
// fontColor: Colors.red,
// fontSize: 40,
// typeFace: BMFTypeFace( familyName: BMFFamilyName.sMonospace,
// textStype: BMFTextStyle.BOLD_ITALIC),
// alignY: BMFVerticalAlign.ALIGN_TOP,
// alignX: BMFHorizontalAlign.ALIGN_LEFT,
// rotate: 30.0);
//
// /// 添加text
// myMapController.addText(bmfText);
//从"dwzb": "104.607091|28.807061"，得到BMFCoordinate(28.807061, 104.607091)
//纬度偏移-上下 off_latitude, 经度偏移-左右 off_longitude
//自己控制off_latitude、off_longitude效果不好
BMFCoordinate getBMFCoordinate(String dwzb, {double off_latitude = 0, double off_longitude = 0}) {
off_latitude = 0; //取消偏移
off_longitude = 0; //取消偏移
List _listCoordinateItem = dwzb.trim().split('|');
return BMFCoordinate(double.parse(_listCoordinateItem[1]) - off_latitude,
double.parse(_listCoordinateItem[0]) - off_longitude);
}