英文:
How can i simplify pins in maps
问题
所以我已经在我的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，但我不知道如何更进一步。
我的地图上有很多标记，每次我创建一个标记，我都会创建一个完整的标记，所以我想简化这个过程，如果可能的话，从Excel文件中提取信息。
我的代码：
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);
}
}
}
在这里，我只展示了2个标记，但实际上，我有30个标记。
我该如何简化这个过程？
非常感谢！ 
英文:
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!
答案1
得分: 0
以下是翻译好的部分：
首先，创建一个包含您的数据并将其包含在项目中的 JSON 文件。
[
{ "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" }
]
然后，在您的代码中：
// 读取文件
var json = File.ReadAllText(path);
// 使用 NewtonSoft 进行反序列化
var places = DeserializeObject<List<Place>>(json);
// 然后创建标记点
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);
}
请注意，上述代码是伪代码示例，不是 JSON 或 C# 的正确语法。
英文:
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);
}
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