主頁 > .NET開發 > Xamarin.Forms客戶端第一版

Xamarin.Forms客戶端第一版

2020-09-16 11:37:50 .NET開發

Xamarin.Forms客戶端第一版

作為TerminalMACS的一個子行程模塊，目前完成第一版：讀取展示手機基本資訊、聯系人資訊、應用程式本地化，

  1. 功能簡介
  2. 詳細功能說明
  3. 關于TerminalMACS

1. 功能簡介

1.1. 讀取手機基本資訊

主要使用Xamarin.Essentials庫獲取設備基本資訊，Xam.Plugin.DeviceInfo插件獲取App Id，其實該插件也能獲取設備基本資訊，

1.2. 讀取手機聯系人資訊

Android和iOS工程具體實作聯系人讀取服務，使用到DependencyService獲取服務功能，

1.3. 應用本地化

使用資源檔案實作本地化，目前只做了中、英文，

2. 詳細功能說明

2.1. 讀取手機基本資訊

Xamarin.Essentials庫用于獲取手機基本資訊，比如手機廠商、型號、名稱、型別、版本等；Xam.Plugin.DeviceInfo插件獲取App Id，用于唯一標識不同手機，獲取資訊見下圖：

代碼結構如下圖：

ClientInfoViewModel.cs

using Plugin.DeviceInfo;
using System;
using Xamarin.Essentials;

namespace TerminalMACS.Clients.App.ViewModels
{
    /// <summary>
    /// Client base information page ViewModel
    /// </summary>
    public class ClientInfoViewModel : BaseViewModel
    {
        /// <summary>
        /// Gets or sets the id of the application.
        /// </summary>
        public string AppId { get; set; } = CrossDeviceInfo.Current.GenerateAppId();
        /// <summary>
        /// Gets or sets the model of the device.
        /// </summary>
        public string Model { get; private set; } = DeviceInfo.Model;
        /// <summary>
        /// Gets or sets the manufacturer of the device.
        /// </summary>
        public string Manufacturer { get; private set; } = DeviceInfo.Manufacturer;
        /// <summary>
        /// Gets or sets the name of the device.
        /// </summary>
        public string Name { get; private set; } = DeviceInfo.Name;
        /// <summary>
        /// Gets or sets the version of the operating system.
        /// </summary>
        public string VersionString { get; private set; } = DeviceInfo.VersionString;
        /// <summary>
        /// Gets or sets the version of the operating system.
        /// </summary>
        public Version Version { get; private set; } = DeviceInfo.Version;
        /// <summary>
        /// Gets or sets the platform or operating system of the device.
        /// </summary>
        public DevicePlatform Platform { get; private set; } = DeviceInfo.Platform;
        /// <summary>
        /// Gets or sets the idiom of the device.
        /// </summary>
        public DeviceIdiom Idiom { get; private set; } = DeviceInfo.Idiom;
        /// <summary>
        /// Gets or sets the type of device the application is running on.
        /// </summary>
        public DeviceType DeviceType { get; private set; } = DeviceInfo.DeviceType;
    }
}

ClientInfoPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:resources="clr-namespace:TerminalMACS.Clients.App.Resx"
             xmlns:vm="clr-namespace:TerminalMACS.Clients.App.ViewModels"
             mc:Ignorable="d"
             x:Class="TerminalMACS.Clients.App.Views.ClientInfoPage"
             Title="{x:Static resources:AppResource.Title_ClientInfoPage}">
    <ContentPage.BindingContext>
        <vm:ClientInfoViewModel/>
    </ContentPage.BindingContext>
    <ContentPage.Content>
        <StackLayout>
            <Label Text="{x:Static resources:AppResource.AppId}"/>
            <Label Text="{Binding AppId}" FontAttributes="Bold" Margin="10,0,0,10"/>
            
            <Label Text="{x:Static resources:AppResource.DeviceModel}"/>
            <Label Text="{Binding Model}" FontAttributes="Bold" Margin="10,0,0,10"/>

            <Label Text="{x:Static resources:AppResource.DeviceManufacturer}"/>
            <Label Text="{Binding Manufacturer}" FontAttributes="Bold" Margin="10,0,0,10"/>
            
            <Label Text="{x:Static resources:AppResource.DeviceName}"/>
            <Label Text="{Binding Name}" FontAttributes="Bold" Margin="10,0,0,10"/>
            
            <Label Text="{x:Static resources:AppResource.DeviceVersionString}"/>
            <Label Text="{Binding VersionString}" FontAttributes="Bold" Margin="10,0,0,10"/>

            <Label Text="{x:Static resources:AppResource.DevicePlatform}"/>
            <Label Text="{Binding Platform}" FontAttributes="Bold" Margin="10,0,0,10"/>
            
            <Label Text="{x:Static resources:AppResource.DeviceIdiom}"/>
            <Label Text="{Binding Idiom}" FontAttributes="Bold" Margin="10,0,0,10"/>
            
            <Label Text="{x:Static resources:AppResource.DeviceType}"/>
            <Label Text="{Binding DeviceType}" FontAttributes="Bold" Margin="10,0,0,10"/>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

2.2. 讀取手機聯系人資訊

Android和iOS工程具體實作聯系人讀取服務，使用到DependencyService獲取服務功能，功能截圖如下：

2.2.1. TerminalMACS.Clients.App

代碼結構如下圖：

2.2.1.1. 聯系人物體類：Contacts.cs

目前只獲取聯系人名稱、圖片、電子郵件（可能多個）、電話號碼（可能多個），更多可以擴展，

namespace TerminalMACS.Clients.App.Models
{
    /// <summary>
    /// Contact information entity.
    /// </summary>
    public class Contact
    {
        /// <summary>
        /// Gets or sets the name
        /// </summary>
        public string Name { get; set; }
        /// <summary>
        /// Gets or sets the image
        /// </summary>
        public string Image { get; set; }
        /// <summary>
        /// Gets or sets the emails
        /// </summary>
        public string[] Emails { get; set; }
        /// <summary>
        /// Gets or sets the phone numbers
        /// </summary>
        public string[] PhoneNumbers { get; set; }
    }
}
2.2.1.2. 聯系人服務介面：IContactsService.cs

包括：

  • 一個聯系人獲取請求介面：RetrieveContactsAsync
  • 一個讀取一條聯系人結果通知事件：OnContactLoaded

該介面由具體平臺(Android和iOS)實作，

using System;
using System.Collections.Generic;
using System.Threading;
using System.Threading.Tasks;
using TerminalMACS.Clients.App.Models;

namespace TerminalMACS.Clients.App.Services
{
    /// <summary>
    /// Read a contact record notification event parameter.
    /// </summary>
    public class ContactEventArgs:EventArgs
    {
        public Contact Contact { get; }
        public ContactEventArgs(Contact contact)
        {
            Contact = contact;
        }
    }

    /// <summary>
    /// Contact service interface, which is required for Android and iOS terminal specific 
    ///  contact acquisition service needs to implement this interface.
    /// </summary>
    public interface IContactsService
    {
        /// <summary>
        /// Read a contact record and notify the shared library through this event.
        /// </summary>
        event EventHandler<ContactEventArgs> OnContactLoaded;
        /// <summary>
        /// Loading or not
        /// </summary>
        bool IsLoading { get; }
        /// <summary>
        /// Try to get all contact information
        /// </summary>
        /// <param name="token"></param>
        /// <returns></returns>
        Task<IList<Contact>> RetrieveContactsAsync(CancellationToken? token = null);
    }
}
2.2.1.3. 聯系人VM：ContactViewModel.cs

VM提供下面兩個功能：

  1. 全部聯系人加載，
  2. 聯系人關鍵字查詢，
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Threading.Tasks;
using System.Windows.Input;
using TerminalMACS.Clients.App.Models;
using TerminalMACS.Clients.App.Resx;
using TerminalMACS.Clients.App.Services;
using Xamarin.Forms;

namespace TerminalMACS.Clients.App.ViewModels
{
    /// <summary>
    /// Contact page ViewModel
    /// </summary>
    public class ContactViewModel : BaseViewModel
    {
        /// <summary>
        /// Contact service interface
        /// </summary>
        IContactsService _contactService;
        private string _SearchText;
        /// <summary>
        /// Gets or sets the search text of the contact list.
        /// </summary>
        public string SearchText
        {
            get { return _SearchText; }
            set
            {
                SetProperty(ref _SearchText, value);
            }
        }
        /// <summary>
        /// The search contact command.
        /// </summary>
        public ICommand RaiseSearchCommand { get; }
        /// <summary>
        /// The contact list.
        /// </summary>
        public ObservableCollection<Contact> Contacts { get; set; }
        private List<Contact> _FilteredContacts;
        /// <summary>
        /// Contact filter list.
        /// </summary>
        public List<Contact> FilteredContacts

        {
            get { return _FilteredContacts; }
            set
            {
                SetProperty(ref _FilteredContacts, value);
            }
        }
        public ContactViewModel()
        {
            _contactService = DependencyService.Get<IContactsService>();
            Contacts = new ObservableCollection<Contact>();
            Xamarin.Forms.BindingBase.EnableCollectionSynchronization(Contacts, null, ObservableCollectionCallback);
            _contactService.OnContactLoaded += OnContactLoaded;
            LoadContacts();
            RaiseSearchCommand = new Command(RaiseSearchHandle);
        }

        /// <summary>
        /// Filter contact list
        /// </summary>
        void RaiseSearchHandle()
        {
            if (string.IsNullOrEmpty(SearchText))
            {
                FilteredContacts = Contacts.ToList();
                return;
            }

            Func<Contact, bool> checkContact = (s) =>
            {
                if (!string.IsNullOrWhiteSpace(s.Name) && s.Name.ToLower().Contains(SearchText.ToLower()))
                {
                    return true;
                }
                else if (s.PhoneNumbers.Length > 0 && s.PhoneNumbers.ToList().Exists(cu => cu.ToString().Contains(SearchText)))
                {
                    return true;
                }
                return false;
            };
            FilteredContacts = Contacts.ToList().Where(checkContact).ToList();
        }

        /// <summary>
        /// BindingBase.EnableCollectionSynchronization
        ///     Enable cross thread updates for collections
        /// </summary>
        /// <param name="collection"></param>
        /// <param name="context"></param>
        /// <param name="accessMethod"></param>
        /// <param name="writeAccess"></param>
        void ObservableCollectionCallback(IEnumerable collection, object context, Action accessMethod, bool writeAccess)
        {
            // `lock` ensures that only one thread access the collection at a time
            lock (collection)
            {
                accessMethod?.Invoke();
            }
        }

        /// <summary>
        /// Received a event notification that a contact information was successfully read.
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void OnContactLoaded(object sender, ContactEventArgs e)
        {
            Contacts.Add(e.Contact);
            RaiseSearchHandle();
        }

        /// <summary>
        /// Read contact information asynchronously
        /// </summary>
        /// <returns></returns>
        async Task LoadContacts()
        {
            try
            {
                await _contactService.RetrieveContactsAsync();
            }
            catch (TaskCanceledException)
            {
                Console.WriteLine(AppResource.TaskCancelled);
            }
        }
    }
}
2.2.1.4. 聯系人展示頁面：ContactPage.xaml

簡單的布局，一個StackLayout布局容器豎直排列，一個SearchBar提供關鍵字搜索功能，

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:resources="clr-namespace:TerminalMACS.Clients.App.Resx"
             xmlns:vm="clr-namespace:TerminalMACS.Clients.App.ViewModels"
             xmlns:ios="clr-namespace:Xamarin.Forms.PlatformConfiguration.iOSSpecific;assembly=Xamarin.Forms.Core"
             mc:Ignorable="d"
             Title="{x:Static resources:AppResource.Title_ContactPage}"
             x:Class="TerminalMACS.Clients.App.Views.ContactPage"
             ios:Page.UseSafeArea="true">
    <ContentPage.BindingContext>
        <vm:ContactViewModel/>
    </ContentPage.BindingContext>
    <ContentPage.Content>
        <StackLayout>
            <SearchBar x:Name="filterText"
                        HeightRequest="40"
                        Text="{Binding SearchText}"
                       SearchCommand="{Binding RaiseSearchCommand}"/>
            <ListView   ItemsSource="{Binding FilteredContacts}"
                        HasUnevenRows="True">
                <ListView.ItemTemplate>
                    <DataTemplate>
                        <ViewCell>
                            <StackLayout Padding="10"
                                         Orientation="Horizontal">
                                <Image  Source="{Binding Image}"
                                        VerticalOptions="Center"
                                        x:Name="image"
                                        Aspect="AspectFit"
                                        HeightRequest="60"/>
                                <StackLayout VerticalOptions="Center">
                                    <Label Text="{Binding Name}"
                                       FontAttributes="Bold"/>
                                    <Label Text="{Binding PhoneNumbers[0]}"/>
                                    <Label Text="{Binding Emails[0]}"/>
                                </StackLayout>
                            </StackLayout>
                        </ViewCell>
                    </DataTemplate>
                </ListView.ItemTemplate>
            </ListView>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

2.2.2. Android

代碼結構如下圖：

  • AndroidManifest.xml：寫入讀、寫聯系人權限請求，
  • ContactsService.cs：具體的聯系人權限請求、資料讀取操作，
  • MainActivity.cs：接收權限請求結果
  • MainApplicaion.cs：此類未添加任務關鍵代碼，但必不可少，否則無法正確彈出權限請求視窗，
  • PermissionUtil.cs：權限請求結果判斷

2.2.2.1. AndroidManifest.xml添加權限

只添加下面這一行即可：

<uses-permission android:name="android.permission.READ_CONTACTS" />

2.2.2.2. ContactsService.cs

Android聯系人獲取實作服務，實作IContactsService，注意命名空間上的特性代碼，必須添加上這個特性后，在前面的聯系人VM中才能使用DependencyService.Get()獲取此服務實體，默認服務是單例的：

[assembly: Xamarin.Forms.Dependency(typeof(TerminalMACS.Clients.App.iOS.Services.ContactsService))]

using Contacts;
using Foundation;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using TerminalMACS.Clients.App.Models;
using TerminalMACS.Clients.App.Services;

[assembly: Xamarin.Forms.Dependency(typeof(TerminalMACS.Clients.App.iOS.Services.ContactsService))]
namespace TerminalMACS.Clients.App.iOS.Services
{
    /// <summary>
    /// Contact service.
    /// </summary>
    public class ContactsService : NSObject, IContactsService
    {
        const string ThumbnailPrefix = "thumb";

        bool requestStop = false;

        public event EventHandler<ContactEventArgs> OnContactLoaded;

        bool _isLoading = false;
        public bool IsLoading => _isLoading;

        /// <summary>
        /// Asynchronous request permission
        /// </summary>
        /// <returns></returns>
        public async Task<bool> RequestPermissionAsync()
        {
            var status = CNContactStore.GetAuthorizationStatus(CNEntityType.Contacts);

            Tuple<bool, NSError> authotization = new Tuple<bool, NSError>(status == CNAuthorizationStatus.Authorized, null);

            if (status == CNAuthorizationStatus.NotDetermined)
            {
                using (var store = new CNContactStore())
                {
                    authotization = await store.RequestAccessAsync(CNEntityType.Contacts);
                }
            }
            return authotization.Item1;

        }

        /// <summary>
        /// Request contact asynchronously. This method is called by the interface.
        /// </summary>
        /// <param name="cancelToken"></param>
        /// <returns></returns>
        public async Task<IList<Contact>> RetrieveContactsAsync(CancellationToken? cancelToken = null)
        {
            requestStop = false;

            if (!cancelToken.HasValue)
                cancelToken = CancellationToken.None;

            // We create a TaskCompletionSource of decimal
            var taskCompletionSource = new TaskCompletionSource<IList<Contact>>();

            // Registering a lambda into the cancellationToken
            cancelToken.Value.Register(() =>
            {
                // We received a cancellation message, cancel the TaskCompletionSource.Task
                requestStop = true;
                taskCompletionSource.TrySetCanceled();
            });

            _isLoading = true;

            var task = LoadContactsAsync();

            // Wait for the first task to finish among the two
            var completedTask = await Task.WhenAny(task, taskCompletionSource.Task);
            _isLoading = false;

            return await completedTask;

        }

        /// <summary>
        /// Load contacts asynchronously, fact reading method of address book.
        /// </summary>
        /// <returns></returns>
        async Task<IList<Contact>> LoadContactsAsync()
        {
            IList<Contact> contacts = new List<Contact>();
            var hasPermission = await RequestPermissionAsync();
            if (hasPermission)
            {

                NSError error = null;
                var keysToFetch = new[] { CNContactKey.PhoneNumbers, CNContactKey.GivenName, CNContactKey.FamilyName, CNContactKey.EmailAddresses, CNContactKey.ImageDataAvailable, CNContactKey.ThumbnailImageData };

                var request = new CNContactFetchRequest(keysToFetch: keysToFetch);
                request.SortOrder = CNContactSortOrder.GivenName;

                using (var store = new CNContactStore())
                {
                    var result = store.EnumerateContacts(request, out error, new CNContactStoreListContactsHandler((CNContact c, ref bool stop) =>
                    {

                        string path = null;
                        if (c.ImageDataAvailable)
                        {
                            path = path = Path.Combine(Path.GetTempPath(), $"{ThumbnailPrefix}-{Guid.NewGuid()}");

                            if (!File.Exists(path))
                            {
                                var imageData = https://www.cnblogs.com/Dotnet9-com/p/c.ThumbnailImageData;
                                imageData?.Save(path, true);


                            }
                        }

                        var contact = new Contact()
                        {
                            Name = string.IsNullOrEmpty(c.FamilyName) ? c.GivenName : $"{c.GivenName} {c.FamilyName}",
                            Image = path,
                            PhoneNumbers = c.PhoneNumbers?.Select(p => p?.Value?.StringValue).ToArray(),
                            Emails = c.EmailAddresses?.Select(p => p?.Value?.ToString()).ToArray(),

                        };

                        if (!string.IsNullOrWhiteSpace(contact.Name))
                        {
                            OnContactLoaded?.Invoke(this, new ContactEventArgs(contact));

                            contacts.Add(contact);
                        }

                        stop = requestStop;

                    }));
                }
            }

            return contacts;
        }


    }
}

2.2.2.3. MainActivity.cs

代碼簡單，只在OnRequestPermissionsResult方法中接收權限請求結果：

// The contact service processes the result of the permission request.
ContactsService.OnRequestPermissionsResult(requestCode, permissions, grantResults);

2.2.3. iOS

代碼結構如下圖：

  • ContactsService.cs：具體的聯系人權限請求、資料讀取操作，
  • Info.plist：權限請求時描述檔案

2.2.3.1. ContactsService.cs

iOS具體的聯系人讀取服務，實作IContactsService介面，原理同Android聯系人服務類似，本人無除錯環境，iOS此功能未測驗，

using Contacts;
using Foundation;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using TerminalMACS.Clients.App.Models;
using TerminalMACS.Clients.App.Services;

[assembly: Xamarin.Forms.Dependency(typeof(TerminalMACS.Clients.App.iOS.Services.ContactsService))]
namespace TerminalMACS.Clients.App.iOS.Services
{
    /// <summary>
    /// Contact service.
    /// </summary>
    public class ContactsService : NSObject, IContactsService
    {
        const string ThumbnailPrefix = "thumb";

        bool requestStop = false;

        public event EventHandler<ContactEventArgs> OnContactLoaded;

        bool _isLoading = false;
        public bool IsLoading => _isLoading;

        /// <summary>
        /// Asynchronous request permission
        /// </summary>
        /// <returns></returns>
        public async Task<bool> RequestPermissionAsync()
        {
            var status = CNContactStore.GetAuthorizationStatus(CNEntityType.Contacts);

            Tuple<bool, NSError> authotization = new Tuple<bool, NSError>(status == CNAuthorizationStatus.Authorized, null);

            if (status == CNAuthorizationStatus.NotDetermined)
            {
                using (var store = new CNContactStore())
                {
                    authotization = await store.RequestAccessAsync(CNEntityType.Contacts);
                }
            }
            return authotization.Item1;

        }

        /// <summary>
        /// Request contact asynchronously. This method is called by the interface.
        /// </summary>
        /// <param name="cancelToken"></param>
        /// <returns></returns>
        public async Task<IList<Contact>> RetrieveContactsAsync(CancellationToken? cancelToken = null)
        {
            requestStop = false;

            if (!cancelToken.HasValue)
                cancelToken = CancellationToken.None;

            // We create a TaskCompletionSource of decimal
            var taskCompletionSource = new TaskCompletionSource<IList<Contact>>();

            // Registering a lambda into the cancellationToken
            cancelToken.Value.Register(() =>
            {
                // We received a cancellation message, cancel the TaskCompletionSource.Task
                requestStop = true;
                taskCompletionSource.TrySetCanceled();
            });

            _isLoading = true;

            var task = LoadContactsAsync();

            // Wait for the first task to finish among the two
            var completedTask = await Task.WhenAny(task, taskCompletionSource.Task);
            _isLoading = false;

            return await completedTask;

        }

        /// <summary>
        /// Load contacts asynchronously, fact reading method of address book.
        /// </summary>
        /// <returns></returns>
        async Task<IList<Contact>> LoadContactsAsync()
        {
            IList<Contact> contacts = new List<Contact>();
            var hasPermission = await RequestPermissionAsync();
            if (hasPermission)
            {

                NSError error = null;
                var keysToFetch = new[] { CNContactKey.PhoneNumbers, CNContactKey.GivenName, CNContactKey.FamilyName, CNContactKey.EmailAddresses, CNContactKey.ImageDataAvailable, CNContactKey.ThumbnailImageData };

                var request = new CNContactFetchRequest(keysToFetch: keysToFetch);
                request.SortOrder = CNContactSortOrder.GivenName;

                using (var store = new CNContactStore())
                {
                    var result = store.EnumerateContacts(request, out error, new CNContactStoreListContactsHandler((CNContact c, ref bool stop) =>
                    {

                        string path = null;
                        if (c.ImageDataAvailable)
                        {
                            path = path = Path.Combine(Path.GetTempPath(), $"{ThumbnailPrefix}-{Guid.NewGuid()}");

                            if (!File.Exists(path))
                            {
                                var imageData = https://www.cnblogs.com/Dotnet9-com/p/c.ThumbnailImageData;
                                imageData?.Save(path, true);


                            }
                        }

                        var contact = new Contact()
                        {
                            Name = string.IsNullOrEmpty(c.FamilyName) ? c.GivenName : $"{c.GivenName} {c.FamilyName}",
                            Image = path,
                            PhoneNumbers = c.PhoneNumbers?.Select(p => p?.Value?.StringValue).ToArray(),
                            Emails = c.EmailAddresses?.Select(p => p?.Value?.ToString()).ToArray(),

                        };

                        if (!string.IsNullOrWhiteSpace(contact.Name))
                        {
                            OnContactLoaded?.Invoke(this, new ContactEventArgs(contact));

                            contacts.Add(contact);
                        }

                        stop = requestStop;

                    }));
                }
            }

            return contacts;
        }
    }
}

2.2.3.2. Info.plist

聯系人權限請求說明
Info.plist

2.3. 應用本地化

使用資源檔案實作本地化，目前只做了中、英文，

資源檔案如下：

指定默認區域性

要使資源檔案可正常使用，應用程式必須指定 NeutralResourcesLanguage， 在共享專案中，應自定義 AssemblyInfo.cs 檔案以指定默認區域性 ， 以下代碼演示如何在 AssemblyInfo.cs 檔案中將 NeutralResourcesLanguage 設定為 zh-CN (摘自官方檔案：https://docs.microsoft.com/zh-cn/samples/xamarin/xamarin-forms-samples/usingresxlocalization/，后經測驗，注釋下面這段代碼也能正常本地化)：

[assembly: NeutralResourcesLanguage("zh-CN")]

XAML中使用

引入資源檔案命名空間

xmlns:resources="clr-namespace:TerminalMACS.Clients.App.Resx"

具體使用如

<Label Text="{x:Static resources:AppResource.ClientName_AboutPage}" FontAttributes="Bold"/>

3. 關于TerminalMACS及本客戶端

3.1. TermainMACS

多終端資源管理與檢測系統，包含多個子行程模塊，目前只開發了Xamarin.Forms客戶端，下一步開發服務端，使用 .NET 5 Web API開發，基于Abp vNext搭建，

3.2. Xamarin.Forms客戶端

作為TerminalMACS系統的一個子行程模塊，目前只開發了手機基本資訊獲取、聯系人資訊獲取、本地化功能，后續開發服務端時，會配合添加通信功能，比如連接服務端驗證、主動推送已獲取資源等，

3.3. 關于專案開源

    1. 開源專案地址：https://github.com/dotnet9/TerminalMACS
    1. 官方網站：https://terminalmacs.com
    1. 合作網站：https://dotnet9.com

轉載請註明出處，本文鏈接：https://www.uj5u.com/net/56694.html

標籤：C#

上一篇：字串連接

下一篇：【C#】Newtonsoft.Json 中 JArray 添加陣列報錯：Could not determine JSON object type for type 'xxx'

標籤雲
其他(157675) Python(38076) JavaScript(25376) Java(17977) C(15215) 區塊鏈(8255) C＃(7972) AI(7469) 爪哇(7425) MySQL(7132) html(6777) 基礎類(6313) sql(6102) 熊猫(6058) PHP(5869) 数组(5741) R(5409) Linux(5327) 反应(5209) 腳本語言(PerlPython)(5129) 非技術區(4971) Android(4554) 数据框(4311) css(4259) 节点.js(4032) C語言(3288) json(3245) 列表(3129) 扑(3119) C++語言(3117) 安卓(2998) 打字稿(2995) VBA(2789) Java相關(2746) 疑難問題(2699) 细绳(2522) 單片機工控(2479) iOS(2429) ASP.NET(2402) MongoDB(2323) 麻木的(2285) 正则表达式(2254) 字典(2211) 循环(2198) 迅速(2185) 擅长(2169) 镖(2155) 功能(1967) .NET技术(1958) Web開發(1951) python-3.x(1918) HtmlCss(1915) 弹簧靴(1913) C++(1909) xml(1889) PostgreSQL(1872) .NETCore(1853) 谷歌表格(1846) Unity3D(1843) for循环(1842)

熱門瀏覽
  • WebAPI簡介

    Web體系結構： 有三個核心：資源(resource)，URL(統一資源識別符號)和表示 他們的關系是這樣的：一個資源由一個URL進行標識，HTTP客戶端使用URL定位資源，表示是從資源回傳資料，媒體型別是資源回傳的資料格式。 接下來我們說下HTTP. HTTP協議的系統是一種無狀態的方式，使用請求/ ......

    uj5u.com 2020-09-09 22:07:47 more
  • asp.net core 3.1 入口：Program.cs中的Main函式

    本文分析Program.cs 中Main()函式中代碼的運行順序分析asp.net core程式的啟動，重點不是剖析原始碼，而是理清程式開始時執行的順序。到呼叫了哪些實體，哪些法方。asp.net core 3.1 的程式入口在專案Program.cs檔案里，如下。ususing System; us ......

    uj5u.com 2020-09-09 22:07:49 more
  • asp.net網站作為websocket服務端的應用該如何寫

    最近被websocket的一個問題困擾了很久，有一個需求是在web網站中搭建websocket服務。客戶端通過網頁與服務器建立連接，然后服務器根據ip給客戶端網頁發送資訊。 其實，這個需求并不難，只是剛開始對websocket的內容不太了解。上網搜索了一下，有通過asp.net core 實作的、有 ......

    uj5u.com 2020-09-09 22:08:02 more
  • ASP.NET 開源匯入匯出庫Magicodes.IE Docker中使用

    Magicodes.IE在Docker中使用 更新歷史 2019.02.13 【Nuget】版本更新到2.0.2 【匯入】修復單列匯入的Bug，單元測驗“OneColumnImporter_Test”。問題見（https://github.com/dotnetcore/Magicodes.IE/is ......

    uj5u.com 2020-09-09 22:08:05 more
  • 在webform中使用ajax

    如果你用過Asp.net webform， 說明你也算是.NET 開發的老兵了。WEBform應該是2011 2013左右，當時還用visual studio 2005、 visual studio 2008。后來基本都用的是MVC。 如果是新開發的專案，估計沒人會用webform技術。但是有些舊版 ......

    uj5u.com 2020-09-09 22:08:50 more
  • iis添加asp.net網站，訪問提示：由于擴展配置問題而無法提供您請求的

    今天在iis服務器配置asp.net網站，遇到一個問題，記錄一下： 問題：由于擴展配置問題而無法提供您請求的頁面。如果該頁面是腳本，請添加處理程式。如果應下載檔案，請添加 MIME 映射。 WindowServer2012服務器，添加角色安裝完.netframework和iis之后，運行aspx頁面 ......

    uj5u.com 2020-09-09 22:10:00 more
  • WebAPI-處理架構

    帶著問題去思考，大家好！ 問題1：HTTP請求和回傳相應的HTTP回應資訊之間發生了什么？ 1：首先是最底層，托管層，位于WebAPI和底層HTTP堆疊之間 2：其次是 訊息處理程式管道層，這里比如日志和快取。OWIN的參考是將訊息處理程式管道的一些功能下移到堆疊下端的OWIN中間件了。 3：控制器處理 ......

    uj5u.com 2020-09-09 22:11:13 more
  • 微信門戶開發框架-使用指導說明書

    微信門戶應用管理系統，采用基于 MVC + Bootstrap + Ajax + Enterprise Library的技術路線，界面層采用Boostrap + Metronic組合的前端框架，資料訪問層支持Oracle、SQLServer、MySQL、PostgreSQL等資料庫。框架以MVC5，... ......

    uj5u.com 2020-09-09 22:15:18 more
  • WebAPI-HTTP編程模型

    帶著問題去思考，大家好！它是什么？它包含什么？它能干什么？ 訊息 HTTP編程模型的核心就是訊息抽象，表示為：HttPRequestMessage,HttpResponseMessage.用于客戶端和服務端之間交換請求和回應訊息。 HttpMethod類包含了一組靜態屬性： private stat ......

    uj5u.com 2020-09-09 22:15:23 more
  • 部署WebApi隨筆

    一、跨域 NuGet參考Microsoft.AspNet.WebApi.Cors WebApiConfig.cs中配置： // Web API 配置和服務 config.EnableCors(new EnableCorsAttribute("*", "*", "*")); 二、清除默認回傳XML格式 ......

    uj5u.com 2020-09-09 22:15:48 more
最新发布
  • C#多執行緒學習(二) 如何操縱一個執行緒

    <a href="https://www.cnblogs.com/x-zhi/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/2943582/20220801082530.png" alt="" /></...

    uj5u.com 2023-04-19 09:17:20 more
  • C#多執行緒學習(二) 如何操縱一個執行緒

    C#多執行緒學習(二) 如何操縱一個執行緒 執行緒學習第一篇：C#多執行緒學習(一) 多執行緒的相關概念 下面我們就動手來創建一個執行緒，使用Thread類創建執行緒時，只需提供執行緒入口即可。（執行緒入口使程式知道該讓這個執行緒干什么事） 在C#中，執行緒入口是通過ThreadStart代理（delegate）來提供的 ......

    uj5u.com 2023-04-19 09:16:49 more
  • 記一次 .NET某醫療器械清洗系統 卡死分析

    <a href="https://www.cnblogs.com/huangxincheng/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/214741/20200614104537.png" alt="" /&g...

    uj5u.com 2023-04-18 08:39:04 more
  • 記一次 .NET某醫療器械清洗系統 卡死分析

    一：背景 1. 講故事 前段時間協助訓練營里的一位朋友分析了一個程式卡死的問題，回過頭來看這個案例比較經典，這篇稍微整理一下供后來者少踩坑吧。 二：WinDbg 分析 1. 為什么會卡死 因為是表單程式，理所當然就是看主執行緒此時正在做什么? 可以用 ~0s ; k 看一下便知。 0:000> k # ......

    uj5u.com 2023-04-18 08:33:10 more
  • SignalR, No Connection with that ID，IIS

    <a href="https://www.cnblogs.com/smartstar/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/u36196.jpg" alt="" /></a>...

    uj5u.com 2023-03-30 17:21:52 more
  • 一次對pool的誤用導致的.net頻繁gc的診斷分析

    <a href="https://www.cnblogs.com/dotnet-diagnostic/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/3115652/20230225090434.png" alt=""...

    uj5u.com 2023-03-28 10:15:33 more
  • 一次對pool的誤用導致的.net頻繁gc的診斷分析

    <a href="https://www.cnblogs.com/dotnet-diagnostic/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/3115652/20230225090434.png" alt=""...

    uj5u.com 2023-03-28 10:13:31 more
  • C#遍歷指定檔案夾中所有檔案的3種方法

    <a href="https://www.cnblogs.com/xbhp/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/957602/20230310105611.png" alt="" /></a&...

    uj5u.com 2023-03-27 14:46:55 more
  • C#/VB.NET：如何將PDF轉為PDF/A

    <a href="https://www.cnblogs.com/Carina-baby/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/2859233/20220427162558.png" alt="" />...

    uj5u.com 2023-03-27 14:46:35 more
  • 武裝你的WEBAPI-OData聚合查詢

    <a href="https://www.cnblogs.com/podolski/" target="_blank"><img width="48" height="48" class="pfs" src="https://pic.cnblogs.com/face/616093/20140323000327.png" alt="" /><...

    uj5u.com 2023-03-27 14:46:16 more

Copyright © 2010-2020 有解無憂