如何简化地图中的图钉

问题描述

因此，我已经在VS Xamarin项目上实现了Google Maps.我知道有一种方法可以简化我的代码，但是我不知道还能做些什么.我的地图上有一堆标记，每次创建标记时，我都会创建一个整体，因此我想简化此过程，并尽可能从excel文件中提取信息.

我的代码:

 使用系统；使用System.Collections.Generic;使用System.ComponentModel;使用System.Linq;使用System.Text;使用System.Threading.Tasks;使用Xamarin.Forms;使用Xamarin.Forms.Maps;命名空间------{[DesignTimeVisible(false)]公共局部类MainPage:ContentPage{公共MainPage(){InitializeComponent();头寸头寸=新头寸(36.9628066，-122.0194722);MapSpan mapSpan =新的MapSpan(position，0.01，0.01);地图map = new Map(mapSpan){MapType = MapType.Hybrid};内容=地图；引脚引脚=新引脚{标签="Santa HEY MAN"，地址=有木板路的城市"，类型= PinType.Place，职位=新职位(36.9628066，-122.0194722)};map.Pins.Add(pin);引脚引脚2 =新引脚{标签=美国"，地址="2020"，类型= PinType.Place，职位=新职位(36.9628066，-122.0194722)};map.Pins.Add(pin2);}}} 

这里我只显示2个图钉，但实际上，我有30个图钉.我怎样才能使它更简单?非常感谢！:)

解决方案

注意

首先，使用数据创建一个json文件，并将其包含在您的项目中

  [{标签=美国"地址="2020"，纬度="36.9628066"长="-122.0194722"}，...{标签="Santa HEY MAN"，地址=有木板路的城市"，纬度="36.9628066".长=" -122.0194722}}] 

然后，在您的代码中

 //读取文件var json = File.ReadAllText(path);//使用NewtonSoft反序列化var place = DeserializeObject< List< Place>>>(json);//然后创建图钉foreach(地方上的各种地方){var pin = new Pin{标签= place.Label，地址=地点.地址，类型= PinType.Place，位置=新位置(place.Lat，place.Long)};map.Pins.Add(pin);} 

So I have implemented Google Maps on my VS Xamarin project.I know there is a way to simplify my code but I don't know how more could I do it.I have a bunch of markers on my map and each time I create one I create at whole so I want to simplify this process and if possible extract the information from an excel file.

My code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Maps;

namespace ------
{

    [DesignTimeVisible(false)]
    public partial class MainPage : ContentPage
    {
        public MainPage()
        {
            InitializeComponent();
            Position position = new Position(36.9628066, -122.0194722);
            MapSpan mapSpan = new MapSpan(position, 0.01, 0.01);
            Map map = new Map(mapSpan)
            {
               MapType = MapType.Hybrid

            };
            Content = map;
            Pin pin = new Pin
            {
                Label = "Santa HEY MAN",
                Address = "The city with a boardwalk",
                Type = PinType.Place,
                Position = new Position(36.9628066, -122.0194722)
            };
            map.Pins.Add(pin);

            Pin pin2 = new Pin
            {
                Label = "USA",
                Address = "2020",
                Type = PinType.Place,
                Position = new Position(36.9628066, -122.0194722)
            };
            map.Pins.Add(pin2);


        }

    }
}

Here I only show 2 pins but in reality, I have 30 pins.How could I make this simpler?Thanks a lot!:)

解决方案

note this is all pseudocode, not syntactically correct json/C#

first, create a json file with your data and include it in your project

[
  { Label = "USA" Address = "2020", Lat = "36.9628066" Long = "-122.0194722" },
  ...
  { Label = ""Santa HEY MAN", Address = "The city with a boardwalk", Lat = "36.9628066" Long = "-122.0194722} }
]

then, in your code

// read the file
var json = File.ReadAllText(path);

// deserialize using NewtonSoft
var places = DeserializeObject<List<Place>>(json);

// then create pins
foreach (var place in places)
{
   var pin = new Pin
        {
            Label = place.Label,
            Address = place.Address,
            Type = PinType.Place,
            Position = new Position(place.Lat, place.Long)
        };
   map.Pins.Add(pin);
}

这篇关于如何简化地图中的图钉的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！