（转）windows phone7 练习作品（2）

原文地址：http://www.cnblogs.com/suojh/archive/2012/03/01/2374908.html

      周六去面试，给留下两个测试题，其中一个是新浪微博API的基础应用，这几天公司比较忙，今天终于有时间完成这么题目，希望是对方想要的效果，呵呵．作品效果图如下:

主要代码：MainPage.xaml

 <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="新浪微博API" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="我喜欢的名人" 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">
            

            <toolkit:HubTile x:Name="ycHubTile" Height="173" HorizontalAlignment="Left" Margin="12,18,0,0" Title="{Binding Title}" 
                              Notification="{Binding Notification}"
                                         DisplayNotification="{Binding DisplayNotification}"  
                                         Message="{Binding Message}"
                                         GroupTag="{Binding id}" 
                                         Source="{Binding ImageUri}"
                             VerticalAlignment="Top" Width="173" Tap="ycHubTile_Tap" />
            <toolkit:HubTile x:Name="mzHubTile" Height="173" HorizontalAlignment="Left" Margin="228,18,0,0" Title="{Binding Title}" 
                              Notification="{Binding Notification}"
                                         DisplayNotification="{Binding DisplayNotification}"  
                                         Message="{Binding Message}"
                                         GroupTag="{Binding id}" 
                                         Source="{Binding ImageUri}"
                             VerticalAlignment="Top" Width="173" Tap="mzHubTile_Tap" />
        </Grid>
    </Grid>

MainPage.xaml.cs

public partial class MainPage : PhoneApplicationPage
    {
        // 构造函数
        public MainPage()
        {
            InitializeComponent();
        }

        private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
        {   
            //返回姚晨信息
            WebClient clientUser = new WebClient();
            clientUser.DownloadStringCompleted += new DownloadStringCompletedEventHandler(userInfo_DownloadStringCompleted);

　　　　　　  //App Key在新浪微博申请

            string urlUser = "http://api.t.sina.com.cn/statuses/user_timeline.xml?source=App Key&user_id=1266321801&feature=1&page=1&count=1";
            clientUser.DownloadStringAsync(new Uri(urlUser));

            //返回蛮子信息
            WebClient clientUserMz = new WebClient();
            clientUserMz.DownloadStringCompleted += new DownloadStringCompletedEventHandler(userInfoMz_DownloadStringCompleted);

            string urlUserMz = "http://api.t.sina.com.cn/statuses/user_timeline.xml?source=App Key&user_id=1813080181&feature=1&page=1&count=1";
        
            clientUserMz.DownloadStringAsync(new Uri(urlUserMz));

        }
        public void userInfo_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                var xml = XElement.Parse(e.Result);
                var videosTemp = (
                    from p in xml.Descendants("user")
                    select new usersInfo()
                    {
                        Title = p.Element("screen_name").Value,
                        Message = p.Element("description").Value,
                        ImageUri = p.Element("profile_image_url").Value,
                        id = p.Element("id").Value,

                    }).ToList();

                ycHubTile.DataContext = videosTemp[0];
            }
        }
        public void userInfoMz_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                var xml = XElement.Parse(e.Result);
                var videosTemp = (
                    from p in xml.Descendants("user")
                    select new usersInfo()
                    {
                        Title = p.Element("screen_name").Value,
                        Message = p.Element("description").Value,
                        ImageUri = p.Element("profile_image_url").Value,
                        id = p.Element("id").Value,

                    }).ToList();

                mzHubTile.DataContext = videosTemp[0];
            }
        }

        private void ycHubTile_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            HubTile ht = sender as HubTile;

            this.NavigationService.Navigate(new Uri("/Views/weiboList.xaml?user_id=" + ht.GroupTag + "&name=" + ht.Title, UriKind.Relative));
        }

        private void mzHubTile_Tap(object sender, System.Windows.Input.GestureEventArgs e)
        {
            HubTile ht = sender as HubTile;

            this.NavigationService.Navigate(new Uri("/Views/weiboList.xaml?user_id=" + ht.GroupTag+"&name="+ht.Title, UriKind.Relative));
        }
    }

微博列表页面：weiboList.xaml

<phone:PhoneApplicationPage.Resources>
        <utils:DateConverter x:Key="dateConverter"/>
       
        <DataTemplate x:Key="statusTemplate1">
            <StackPanel Width="457" Orientation="Horizontal" Height="170">
                <StackPanel Width="330" HorizontalAlignment="Left">
                    <TextBlock Text="{Binding text}" Margin="0" TextWrapping="Wrap" FontSize="24" Height="126"/>
                    <TextBlock TextWrapping="Wrap"  Text="{Binding created_at,Converter={StaticResource dateConverter }}" FontSize="16" Margin="0,10,0,0" Foreground="#FF858585"/>
                </StackPanel>
                <StackPanel Height="120" Width="120" VerticalAlignment="Top">
                    <Image Source="{Binding thumbnail_pic}" HorizontalAlignment="Left" VerticalAlignment="Top"/>
                </StackPanel>
            </StackPanel>
        </DataTemplate>
    </phone:PhoneApplicationPage.Resources>

    <!--LayoutRoot 是包含所有页面内容的根网格-->
    <Grid x:Name="LayoutRoot" Background="Transparent" DataContext="{Binding Source={StaticResource WeiBoDataSource}}">
        <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="新浪微博API" Style="{StaticResource PhoneTextNormalStyle}"/>
            <TextBlock x:Name="PageTitle" Text="页面名称" 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">
            <ListBox  x:Name="weiboListBox" ItemTemplate="{StaticResource statusTemplate1}" />
        </Grid>
    </Grid>
 
    </phone:PhoneApplicationPage>

绑定日期字段时用到日期转换，DateConverter.cs

 public class DateConverter : IValueConverter
    {
        object IValueConverter.Convert(object value, Type targetType, object parameter, CultureInfo culture)
        {
           
            CultureInfo provider = CultureInfo.InvariantCulture;
            DateTime dt = DateTime.ParseExact(value.ToString(), "ddd MMM dd HH:mm:ss zzz yyyy", provider, DateTimeStyles.AllowWhiteSpaces);

            return DateStringFromNow(dt);
        }

        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
        {
            throw new NotImplementedException();
        }

        public string DateStringFromNow(DateTime dt)
        {
            TimeSpan span = DateTime.Now - dt;

            if (span.TotalDays > 1)
            {
                return dt.ToString("MM月dd日");
            }
            else
                if (span.TotalHours > 1)
                {
                    return string.Format("{0}小时前", (int)Math.Floor(span.TotalHours));
                }
                else
                    if (span.TotalMinutes > 1)
                    {
                        return
                        string.Format("{0}分钟前", (int)Math.Floor(span.TotalMinutes));
                    }
                    else
                        if (span.TotalSeconds >= 1)
                        {
                            return
                            string.Format("{0}秒前", (int)Math.Floor(span.TotalSeconds));
                        }
                        else
                        {
                            return
                            "1秒前";
                        }

        }

    }

weiboList.xaml.cs页面

public partial class weiboList : PhoneApplicationPage
    {
        public weiboList()
        {
            InitializeComponent();
        }

        private void PhoneApplicationPage_Loaded(object sender, RoutedEventArgs e)
        {
            string user_id = Convert.ToString(NavigationContext.QueryString["user_id"]);
            PageTitle.Text = Convert.ToString(NavigationContext.QueryString["name"]);
            //返回文化传播
            WebClient client = new WebClient();
            client.DownloadStringCompleted += new DownloadStringCompletedEventHandler(client_DownloadStringCompleted);
            string url = "http://api.t.sina.com.cn/statuses/user_timeline.xml?source=App Key&user_id=" + user_id + "&feature=1&page=1&count=20";
            client.DownloadStringAsync(new Uri(url));
        }
        public void client_DownloadStringCompleted(object sender, DownloadStringCompletedEventArgs e)
        {
            if (e.Error == null)
            {
                var xml = XElement.Parse(e.Result);
                var videosTemp = (
                    from p in xml.Descendants("status")
                    select new sinaApi.Models.weiboList()
                    {
                        text = p.Element("text").Value,
                        created_at=p.Element("created_at").Value,
                        thumbnail_pic = p.Element("thumbnail_pic") == null ? "" : p.Element("thumbnail_pic").Value
                    }).ToList();

                weiboListBox.Items.Clear();
                videosTemp.ForEach(p => weiboListBox.Items.Add(p));
            }
        }

    }

源代码下载：微博Api练习

注：源码中source处请填写您自己的新浪微博的app key否则无法获取数据。