俺們都知道，智能手機(jī)可以通過(guò)旋轉(zhuǎn)手機(jī)來(lái)改變屏幕的顯示方向，更多的時(shí)候，對(duì)于屏幕方向的改變，我們要做出相應(yīng)的處理，例如，當(dāng)手機(jī)屏幕方向從縱向變?yōu)闄M向時(shí)，可能要重新排列頁(yè)面上的控件以適應(yīng)顯示區(qū)域的變化。

要使頁(yè)面支持旋轉(zhuǎn)，要把PhoneApplicationPage的SupportedOrientations屬性改為PortraitOrLandscape，然后可以通過(guò)定義OrientationChanged事件來(lái)處理布局。形如：

<phone:PhoneApplicationPage  
    .............. 
    SupportedOrientations="PortraitOrLandscape"  
    Orientation="Portrait" 
    OrientationChanged="PhoneApplicationPage_OrientationChanged"> 

一、Grid控件的處理。

<phone:PhoneApplicationPage  
    x:Class="Sample_PageDir.Page1" 
    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" 
    FontFamily="{StaticResource PhoneFontFamilyNormal}" 
    FontSize="{StaticResource PhoneFontSizeNormal}" 
    Foreground="{StaticResource PhoneForegroundBrush}" 
    mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480" 
    shell:SystemTray.IsVisible="True" 
    SupportedOrientations="PortraitOrLandscape"  
    Orientation="Portrait" 
    OrientationChanged="PhoneApplicationPage_OrientationChanged"> 
 
    <Grid x:Name="layoutRoot"> 
        <Grid.RowDefinitions> 
            <RowDefinition Height="Auto" /> 
            <RowDefinition Height="Auto" /> 
        </Grid.RowDefinitions> 
        <Grid.ColumnDefinitions> 
            <ColumnDefinition Width="Auto" /> 
            <ColumnDefinition Width="Auto" /> 
        </Grid.ColumnDefinitions> 
        <Image x:Name="img" Source="http://gubapic.eastmoney.com/member/e68/e681999/e68199920091216131540.jpg" Stretch="UniformToFill" Width="270" Grid.Row="0" Grid.Column="0" /> 
        <TextBlock x:Name="txtBlock" 
            Grid.Row="1" 
            Grid.Column="0" 
            FontSize="70" 
            Margin="28"> 
            <Run Foreground="Coral">信春哥</Run> 
            <LineBreak/> 
            <Run Foreground="Yellow">唱情歌</Run> 
            <LineBreak/> 
            <Run Foreground="SkyBlue">不掛科</Run> 
        </TextBlock> 
    </Grid> 
</phone:PhoneApplicationPage> 

頁(yè)面主要有兩個(gè)控件，一個(gè)用于顯示圖片，一個(gè)用于顯示文本信息，通過(guò)事件處理代碼來(lái)相應(yīng)改變兩個(gè)控件的布局。

private void PhoneApplicationPage_OrientationChanged(object sender, OrientationChangedEventArgs e) 
{ 
    // 如果是橫向的 
    if (e.Orientation == PageOrientation.Landscape || 
        e.Orientation == PageOrientation.LandscapeLeft || 
        e.Orientation == PageOrientation.LandscapeRight) 
    { 
        Grid.SetColumn(this.img, 0); 
        Grid.SetRow(this.img, 0); 
        Grid.SetRow(this.txtBlock, 0); 
        Grid.SetColumn(this.txtBlock, 1); 
    } 
    // 如果是縱向 
    else if (e.Orientation == PageOrientation.Portrait || 
        e.Orientation == PageOrientation.PortraitDown || 
        e.Orientation == PageOrientation.PortraitUp) 
    { 
        Grid.SetColumn(this.img, 0); 
        Grid.SetRow(this.img, 0); 
        Grid.SetRow(this.txtBlock, 1); 
        Grid.SetColumn(this.txtBlock, 0); 
    } 
    else 
    { 
        Grid.SetColumn(this.img, 0); 
        Grid.SetRow(this.img, 0); 
        Grid.SetRow(this.txtBlock, 1); 
        Grid.SetColumn(this.txtBlock, 0); 
    } 
} 

按F5運(yùn)行程序，默認(rèn)的屏幕方向是縱向的，如下圖所示：

好，現(xiàn)在，我們把屏幕旋轉(zhuǎn)一下，看看會(huì)怎么樣。

別走開，下頁(yè)更精彩

#p#

二、StackPanel控件的處理。

<phone:PhoneApplicationPage  
    x:Class="Sample_PageDir.Page2" 
    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" 
    FontFamily="{StaticResource PhoneFontFamilyNormal}" 
    FontSize="{StaticResource PhoneFontSizeNormal}" 
    Foreground="{StaticResource PhoneForegroundBrush}" 
    SupportedOrientations="PortraitOrLandscape" 
    OrientationChanged="PhoneApplicationPage_OrientationChanged" 
    Orientation="Portrait" 
    mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480" 
    shell:SystemTray.IsVisible="True"> 
    <phone:PhoneApplicationPage.Resources> 
        <Style TargetType="TextBlock"> 
            <Setter Property="FontSize" Value="46"/> 
        </Style> 
    </phone:PhoneApplicationPage.Resources> 
    <StackPanel x:Name="pl"> 
        <TextBlock Text="文本一"/> 
        <TextBlock Text="文本二"/> 
        <TextBlock Text="文本三"/> 
    </StackPanel> 
</phone:PhoneApplicationPage> 

后臺(tái)事件處理代碼。

private void PhoneApplicationPage_OrientationChanged(object sender, OrientationChangedEventArgs e) 
{ 
    if (e.Orientation == PageOrientation.Landscape || 
        e.Orientation == PageOrientation.LandscapeLeft || 
        e.Orientation == PageOrientation.LandscapeRight) 
    { 
        this.pl.Orientation = System.Windows.Controls.Orientation.Horizontal; 
    } 
    else 
    { 
        this.pl.Orientation = System.Windows.Controls.Orientation.Vertical; 
    } 
} 

運(yùn)行，默認(rèn)方向是縱向。

把屏幕旋轉(zhuǎn)后。

三、Canvas控件的處理。

<phone:PhoneApplicationPage  
    x:Class="Sample_PageDir.Page3" 
    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" 
    FontFamily="{StaticResource PhoneFontFamilyNormal}" 
    FontSize="{StaticResource PhoneFontSizeNormal}" 
    Foreground="{StaticResource PhoneForegroundBrush}" 
    SupportedOrientations="PortraitOrLandscape" 
    Orientation="Portrait" 
    OrientationChanged="PhoneApplicationPage_OrientationChanged" 
    mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480" 
    shell:SystemTray.IsVisible="True"> 
    <Canvas x:Name="cv"> 
        <Rectangle x:Name="rect1" 
            Width="232" 
            Height="238" 
            Fill="Red" 
            Canvas.Left="88" 
            Canvas.Top="88"/> 
        <Rectangle x:Name="rect2" 
            Height="192" 
            Width="275" 
            Fill="Yellow" 
            Canvas.Top="268" 
            Canvas.Left="155"/> 
    </Canvas> 
</phone:PhoneApplicationPage> 

后臺(tái)代碼。后臺(tái)代碼。

private void PhoneApplicationPage_OrientationChanged(object sender, OrientationChangedEventArgs e) 
{ 
    if (e.Orientation== PageOrientation.Landscape||e.Orientation== PageOrientation.LandscapeLeft||e.Orientation== PageOrientation.LandscapeRight) 
    { 
        Canvas.SetTop(this.rect1, 37); 
        Canvas.SetLeft(this.rect1, 46); 
        Canvas.SetTop(this.rect2, 240); 
        Canvas.SetLeft(this.rect2, 462); 
    } 
    else 
    { 
        Canvas.SetTop(this.rect1, 88); 
        Canvas.SetLeft(this.rect1, 88); 
        Canvas.SetTop(this.rect2, 268); 
        Canvas.SetLeft(this.rect2, 155); 
    } 
} 

看看效果?？纯葱Ч?。

縱向。

橫向。