Windows Phone开发（24）：启动器与选择器之发送短信

原文: Windows Phone开发（24）：启动器与选择器之发送短信

本节我们通过一个简单的发送短信示例来演示一下如果配合使用PhoneNumberChooserTask和SmsComposeTask类。

PhoneNumberChooserTask是选择器，它用于从你的电话簿里选择你要发送短信的电话号码；

SmsComposeTask就是用来启动发送短信组件并显示发送窗口。

注意，这些操作都在用户的操控之中，发送短信一定会显示可视化页面的，而且不会偷偷地在后台发送，因为Windows phone是以用户体验和安全为原则的，后台发送是不允许的，而且发送过程是由用户控制的，你可以选择取消或退出。

SmsComposeTask类的To属性就是目标电话号码，Body就是你要发送的短信的正文。

同样，你会很轻松地就完成这个任务，不信，看看代码吧。

<phone:PhoneApplicationPage 

    x:Class="SMSSample.MainPage"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"

    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"

    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"

    FontFamily="{StaticResource PhoneFontFamilyNormal}"

    FontSize="{StaticResource PhoneFontSizeNormal}"

    Foreground="{StaticResource PhoneForegroundBrush}"

    SupportedOrientations="Portrait" Orientation="Portrait"

    shell:SystemTray.IsVisible="True">



    <!--LayoutRoot 是包含所有页面内容的根网格-->

    <Grid x:Name="LayoutRoot" Background="Transparent">

        <Grid.RowDefinitions>

            <RowDefinition Height="Auto"/>

            <RowDefinition Height="*"/>

        </Grid.RowDefinitions>



        <!--TitlePanel 包含应用程序的名称和页标题-->

        <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">

            <TextBlock x:Name="ApplicationTitle" Text="我的应用程序" Style="{StaticResource PhoneTextNormalStyle}"/>

            <TextBlock x:Name="PageTitle" Text="发送短信" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>

        </StackPanel>



        <!--ContentPanel - 在此处放置其他内容-->

        <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0">

            <TextBlock Height="40" HorizontalAlignment="Left" Margin="33,69,0,0" Name="textBlock1" Text="接收者：" VerticalAlignment="Top" FontSize="30" Width="144" />

            <TextBox Height="72" HorizontalAlignment="Left" Margin="12,116,0,0" Name="txtPhoneNumber" Text="" VerticalAlignment="Top" Width="418" >

                <TextBox.InputScope>

                    <InputScope>

                        <InputScopeName NameValue="Number"/>

                    </InputScope>

                </TextBox.InputScope>

            </TextBox>

            <TextBlock FontSize="30" Height="40" HorizontalAlignment="Left" Margin="33,235,0,0" Name="textBlock2" Text="短信内容：" VerticalAlignment="Top" Width="213" />

            <TextBox Height="233" HorizontalAlignment="Left" Margin="12,283,0,0" Name="txtMessage" Text="" VerticalAlignment="Top" Width="418" TextWrapping="Wrap" />

            <Button Content="发送" Height="79" HorizontalAlignment="Left" Margin="48,522,0,0" Name="btnSend" VerticalAlignment="Top" Width="357" Click="btnSend_Click" />

            <Button Content="选择电话号码" Height="72" HorizontalAlignment="Left" Margin="185,45,0,0" Name="btnChoose" VerticalAlignment="Top" Width="220" Click="btnChoose_Click" />

        </Grid>

    </Grid>

 



</phone:PhoneApplicationPage>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Animation;

using System.Windows.Shapes;

using Microsoft.Phone.Controls;



using Microsoft.Phone.Tasks;



namespace SMSSample

{

    public partial class MainPage : PhoneApplicationPage

    {

        PhoneNumberChooserTask myChooser = new PhoneNumberChooserTask();

        SmsComposeTask SMS = null;



        // 构造函数

        public MainPage()

        {

            InitializeComponent();

            // 实例化

            SMS = new SmsComposeTask();

            // 注册回调事件

            myChooser.Completed += (sender, e) => {

                if (e.TaskResult== TaskResult.OK)

                {

                    Dispatcher.BeginInvoke(() => { this.txtPhoneNumber.Text = e.PhoneNumber; });

                }

            };

        }



        // 选择联系人

        private void btnChoose_Click(object sender, RoutedEventArgs e)

        {

            if (myChooser == null)

            {

                myChooser = new PhoneNumberChooserTask();

            }

            myChooser.Show();

        }



        // 发送

        private void btnSend_Click(object sender, RoutedEventArgs e)

        {

            if (txtPhoneNumber.Text == "" || txtMessage.Text == "")

            {

                MessageBox.Show("接收号码和短信内容不能为空。");

                return;

            }

            if (SMS == null)

            {

                SMS = new SmsComposeTask();

            }

            // 赋值

            SMS.To = txtPhoneNumber.Text;

            SMS.Body = txtMessage.Text;



            try

            {

                SMS.Show();

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message);

            }

        }

    }

}