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c# – 如何在Windows Phone 8中使用ProgressRing

发布时间：2020-12-15 05:40:13 所属栏目：百科 来源：网络整理
导读：在引用 http://briandunnington.github.io/progressring-wp8.html以获得有趣的进度指示器的新实现时,我想将ProgressRing控件改编为Windows Phone 8.我不确定如何在我的应用程序的MainPage中添加所有内容.我所拥有的如下 MainPage.xaml中 phone:PhoneApplicat
在引用 http://briandunnington.github.io/progressring-wp8.html以获得有趣的进度指示器的新实现时,我想将ProgressRing控件改编为Windows Phone 8.我不确定如何在我的应用程序的MainPage中添加所有内容.我所拥有的如下

MainPage.xaml中

<phone:PhoneApplicationPage.Resources>
    <!-- Default style for Windows.UI.Xaml.Controls.ProgressRing -->
    <Style TargetType="controls:ProgressRing">
        <Setter Property="Foreground" Value="{StaticResource AccentBrush}" />
        <Setter Property="IsHitTestVisible" Value="False" />
        <Setter Property="HorizontalAlignment" Value="Center" />
        <Setter Property="VerticalAlignment" Value="Center" />
        <Setter Property="MinHeight" Value="20" />
        <Setter Property="MinWidth" Value="20" />
        <Setter Property="IsTabStop" Value="False" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="controls:ProgressRing">
                    <Border x:Name="ProgressRingRoot" Background="{TemplateBinding Background}"
                BorderThickness="{TemplateBinding BorderThickness}"
                BorderBrush="{TemplateBinding BorderBrush}">
                        <Border.Resources>
                            <Style x:Key="ProgressRingEllipseStyle" TargetType="Ellipse">
                                <Setter Property="Opacity" Value="0" />
                                <Setter Property="HorizontalAlignment" Value="Left" />
                                <Setter Property="VerticalAlignment" Value="Top" />
                            </Style>
                        </Border.Resources>
                        <VisualStateManager.VisualStateGroups>
                            <VisualStateGroup x:Name="SizeStates">
                                <VisualState x:Name="Large">
                                    <Storyboard>
                                        <ObjectAnimationUsingKeyFrames Duration="0"
                                                            Storyboard.TargetName="SixthCircle"
                                                            Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0">
                                                <DiscreteObjectKeyFrame.Value>
                                                    <Visibility>Visible</Visibility>
                                                </DiscreteObjectKeyFrame.Value>
                                            </DiscreteObjectKeyFrame>
                                        </ObjectAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                                <VisualState x:Name="Small" />
                            </VisualStateGroup>
                            <VisualStateGroup x:Name="ActiveStates">
                                <VisualState x:Name="Inactive" />
                                <VisualState x:Name="Active">
                                    <Storyboard RepeatBehavior="Forever">
                                        <ObjectAnimationUsingKeyFrames Duration="0"
                                                            Storyboard.TargetName="Ring"
                                                            Storyboard.TargetProperty="Visibility">
                                            <DiscreteObjectKeyFrame KeyTime="0">
                                                <DiscreteObjectKeyFrame.Value>
                                                    <Visibility>Visible</Visibility>
                                                </DiscreteObjectKeyFrame.Value>
                                            </DiscreteObjectKeyFrame>
                                        </ObjectAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E1"
                                Storyboard.TargetProperty="Opacity"
                                BeginTime="0">
                                            <DiscreteDoubleKeyFrame KeyTime="0" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.21" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.22" Value="0" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.47" Value="0" />
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E2"
                                Storyboard.TargetProperty="Opacity"
                                BeginTime="00:00:00.167">
                                            <DiscreteDoubleKeyFrame KeyTime="0" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.21" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.22" Value="0" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.47" Value="0" />
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E3"
                                Storyboard.TargetProperty="Opacity"
                                BeginTime="00:00:00.334">
                                            <DiscreteDoubleKeyFrame KeyTime="0" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.21" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.22" Value="0" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.47" Value="0" />
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E4"
                                Storyboard.TargetProperty="Opacity"
                                BeginTime="00:00:00.501">
                                            <DiscreteDoubleKeyFrame KeyTime="0" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.21" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.22" Value="0" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.47" Value="0" />
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E5"
                                Storyboard.TargetProperty="Opacity"
                                BeginTime="00:00:00.668">
                                            <DiscreteDoubleKeyFrame KeyTime="0" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.21" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.22" Value="0" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.47" Value="0" />
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E6"
                                Storyboard.TargetProperty="Opacity"
                                BeginTime="00:00:00.835">
                                            <DiscreteDoubleKeyFrame KeyTime="0" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.21" Value="1" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.22" Value="0" />
                                            <DiscreteDoubleKeyFrame KeyTime="0:0:3.47" Value="0" />
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E1R"
                                BeginTime="0"
                                Storyboard.TargetProperty="Angle">
                                            <SplineDoubleKeyFrame KeyTime="0" Value="-110" KeySpline="0.13,0.21,0.1,0.7"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:0.433" Value="10" KeySpline="0.02,0.33,0.38,0.77"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.2" Value="93"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.617" Value="205" KeySpline="0.57,0.17,0.95,0.75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.017" Value="357" KeySpline="0,0.19,0.07,0.72"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.783" Value="439"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:3.217" Value="585" KeySpline="0,0.37"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E2R"
                                BeginTime="00:00:00.167"
                                Storyboard.TargetProperty="Angle">
                                            <SplineDoubleKeyFrame KeyTime="0" Value="-116" KeySpline="0.13,0.7"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:0.433" Value="4" KeySpline="0.02,0.77"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.2" Value="87"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.617" Value="199" KeySpline="0.57,0.75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.017" Value="351" KeySpline="0,0.72"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.783" Value="433"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:3.217" Value="579" KeySpline="0,0.37"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E3R"
                                BeginTime="00:00:00.334"
                                Storyboard.TargetProperty="Angle">
                                            <SplineDoubleKeyFrame KeyTime="0" Value="-122" KeySpline="0.13,0.7"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:0.433" Value="-2" KeySpline="0.02,0.77"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.2" Value="81"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.617" Value="193" KeySpline="0.57,0.75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.017" Value="345" KeySpline="0,0.72"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.783" Value="427"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:3.217" Value="573" KeySpline="0,0.37"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E4R"
                                BeginTime="00:00:00.501"
                                Storyboard.TargetProperty="Angle">
                                            <SplineDoubleKeyFrame KeyTime="0" Value="-128" KeySpline="0.13,0.7"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:0.433" Value="-8" KeySpline="0.02,0.77"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.2" Value="75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.617" Value="187" KeySpline="0.57,0.75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.017" Value="339" KeySpline="0,0.72"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.783" Value="421"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:3.217" Value="567" KeySpline="0,0.37"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E5R"
                                BeginTime="00:00:00.668"
                                Storyboard.TargetProperty="Angle">
                                            <SplineDoubleKeyFrame KeyTime="0" Value="-134" KeySpline="0.13,0.7"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:0.433" Value="-14" KeySpline="0.02,0.77"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.2" Value="69"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.617" Value="181" KeySpline="0.57,0.75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.017" Value="331" KeySpline="0,0.72"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.783" Value="415"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:3.217" Value="561" KeySpline="0,0.37"/>
                                        </DoubleAnimationUsingKeyFrames>
                                        <DoubleAnimationUsingKeyFrames
                                Storyboard.TargetName="E6R"
                                BeginTime="00:00:00.835"
                                Storyboard.TargetProperty="Angle">
                                            <SplineDoubleKeyFrame KeyTime="0" Value="-140" KeySpline="0.13,0.7"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:0.433" Value="-20" KeySpline="0.02,0.77"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.2" Value="63"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:1.617" Value="175" KeySpline="0.57,0.75"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.017" Value="325" KeySpline="0,0.72"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:2.783" Value="409"/>
                                            <SplineDoubleKeyFrame KeyTime="0:0:3.217" Value="555" KeySpline="0,0.37"/>
                                        </DoubleAnimationUsingKeyFrames>
                                    </Storyboard>
                                </VisualState>
                            </VisualStateGroup>
                        </VisualStateManager.VisualStateGroups>
                        <Grid x:Name="Ring"
                    Margin="{TemplateBinding Padding}"
                    MaxWidth="{Binding RelativeSource={RelativeSource TemplatedParent},Path=TemplateSettings.MaxSideLength}"
                    MaxHeight="{Binding RelativeSource={RelativeSource TemplatedParent},Path=TemplateSettings.MaxSideLength}"
                    Visibility="Collapsed"
                    RenderTransformOrigin=".5,.5"
                    FlowDirection="LeftToRight">
                            <Canvas RenderTransformOrigin=".5,.5">
                                <Canvas.RenderTransform>
                                    <RotateTransform x:Name="E1R" />
                                </Canvas.RenderTransform>
                                <Ellipse
                        x:Name="E1"
                        Style="{StaticResource ProgressRingEllipseStyle}"
                        Width="{Binding RelativeSource={RelativeSource TemplatedParent},Path=TemplateSettings.EllipseDiameter}"
                        Height="{Binding RelativeSource={RelativeSource TemplatedParent},Path=TemplateSettings.EllipseDiameter}"
                        Margin="{Binding RelativeSource={RelativeSource TemplatedParent},Path=TemplateSettings.EllipSEOffset}"
                        Fill="{TemplateBinding Foreground}"/>
                            </Canvas>
                            <Canvas RenderTransformOrigin=".5,.5">
                                <Canvas.RenderTransform>
                                    <RotateTransform x:Name="E2R" />
                                </Canvas.RenderTransform>
                                <Ellipse
                        x:Name="E2"
                        Style="{StaticResource ProgressRingEllipseStyle}"
                        Width="{Binding RelativeSource={RelativeSource TemplatedParent},.5">
                                <Canvas.RenderTransform>
                                    <RotateTransform x:Name="E3R" />
                                </Canvas.RenderTransform>
                                <Ellipse
                        x:Name="E3"
                        Style="{StaticResource ProgressRingEllipseStyle}"
                        Width="{Binding RelativeSource={RelativeSource TemplatedParent},.5">
                                <Canvas.RenderTransform>
                                    <RotateTransform x:Name="E4R" />
                                </Canvas.RenderTransform>
                                <Ellipse
                        x:Name="E4"
                        Style="{StaticResource ProgressRingEllipseStyle}"
                        Width="{Binding RelativeSource={RelativeSource TemplatedParent},.5">
                                <Canvas.RenderTransform>
                                    <RotateTransform x:Name="E5R" />
                                </Canvas.RenderTransform>
                                <Ellipse
                        x:Name="E5"
                        Style="{StaticResource ProgressRingEllipseStyle}"
                        Width="{Binding RelativeSource={RelativeSource TemplatedParent},.5"
                        Visibility="Collapsed"
                        x:Name="SixthCircle">
                                <Canvas.RenderTransform>
                                    <RotateTransform x:Name="E6R" />
                                </Canvas.RenderTransform>
                                <Ellipse
                        x:Name="E6"
                        Style="{StaticResource ProgressRingEllipseStyle}"
                        Width="{Binding RelativeSource={RelativeSource TemplatedParent},Path=TemplateSettings.EllipSEOffset}"
                        Fill="{TemplateBinding Foreground}"/>
                            </Canvas>
                        </Grid>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
</phone:PhoneApplicationPage.Resources>

....

//My original progress bar (which I'd like to change to the ProgressRing)
<ProgressBar Name="ProgessBar" 
                        IsIndeterminate="True" 
                        Height="20" Foreground="{StaticResource PhoneAccentBrush}" 
                        Visibility="Collapsed" 
                        HorizontalAlignment="Center" 
                        VerticalAlignment="Center"/>

还有一个课程,我不知道在哪里放置或如何在MainPage中引用.目前,我已将该类放在名为Common的文件夹中

ProgressRing.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;

namespace TestApp.Common
{
public class ProgressRing : Control
{
    bool hasAppliedTemplate = false;

    public ProgressRing()
    {
        this.DefaultStyleKey = typeof(ProgressRing);
        TemplateSettings = new TemplateSettingValues(60);
    }

    public override void OnApplyTemplate()
    {
        base.OnApplyTemplate();
        hasAppliedTemplate = true;
        UpdateState(this.IsActive);
    }

    void UpdateState(bool isActive)
    {
        if (hasAppliedTemplate)
        {
            string state = isActive ? "Active" : "Inactive";
            System.Windows.VisualStateManager.GoToState(this,state,true);
        }
    }

    protected override System.Windows.Size MeasureOverride(System.Windows.Size availableSize)
    {
        var width = 100D;
        if(!System.ComponentModel.DesignerProperties.IsInDesignTool)
            width = this.Width != double.NaN ? this.Width : availableSize.Width;
        TemplateSettings = new TemplateSettingValues(width);
        return base.MeasureOverride(availableSize);
    }

    public bool IsActive
    {
        get { return (bool)GetValue(IsActiveProperty); }
        set { SetValue(IsActiveProperty,value); }
    }

    // Using a DependencyProperty as the backing store for IsActive.  This enables animation,styling,binding,etc...
    public static readonly DependencyProperty IsActiveProperty =
        DependencyProperty.Register("IsActive",typeof(bool),typeof(ProgressRing),new PropertyMetadata(false,new PropertyChangedCallback(IsActiveChanged)));

    private static void IsActiveChanged(DependencyObject d,DependencyPropertyChangedEventArgs args)
    {
        var pr = (ProgressRing) d;
        var isActive = (bool)args.NewValue;
        pr.UpdateState(isActive);
    }

    public TemplateSettingValues TemplateSettings
    {
        get { return (TemplateSettingValues)GetValue(TemplateSettingsProperty); }
        set { SetValue(TemplateSettingsProperty,value); }
    }

    // Using a DependencyProperty as the backing store for TemplateSettings.  This enables animation,etc...
    public static readonly DependencyProperty TemplateSettingsProperty =
        DependencyProperty.Register("TemplateSettings",typeof(TemplateSettingValues),new PropertyMetadata(new TemplateSettingValues(100)));


    public class TemplateSettingValues : System.Windows.DependencyObject
    {
        public TemplateSettingValues(double width)
        {
            MaxSideLength = 400;
            EllipseDiameter = width/10;
            EllipSEOffset = new System.Windows.Thickness(EllipseDiameter);
        }

        public double MaxSideLength
        {
            get { return (double)GetValue(MaxSideLengthProperty); }
            set { SetValue(MaxSideLengthProperty,value); }
        }

        // Using a DependencyProperty as the backing store for MaxSideLength.  This enables animation,etc...
        public static readonly DependencyProperty MaxSideLengthProperty =
            DependencyProperty.Register("MaxSideLength",typeof(double),new PropertyMetadata(0D));

        public double EllipseDiameter
        {
            get { return (double)GetValue(EllipseDiameterProperty); }
            set { SetValue(EllipseDiameterProperty,value); }
        }

        // Using a DependencyProperty as the backing store for EllipseDiameter.  This enables animation,etc...
        public static readonly DependencyProperty EllipseDiameterProperty =
            DependencyProperty.Register("EllipseDiameter",new PropertyMetadata(0D));

        public Thickness EllipSEOffset
        {
            get { return (Thickness)GetValue(EllipSEOffsetProperty); }
            set { SetValue(EllipSEOffsetProperty,value); }
        }

        // Using a DependencyProperty as the backing store for EllipSEOffset.  This enables animation,etc...
        public static readonly DependencyProperty EllipSEOffsetProperty =
            DependencyProperty.Register("EllipSEOffset",typeof(Thickness),new PropertyMetadata(new Thickness()));
    }
}

}

要注意的是,凭借上面的内容,我遇到了错误

<Style TargetType="common:ProgressRing">

和

<ControlTemplate TargetType="controls:ProgressRing">

解决方法

您需要编写正确的XAML命名空间： 
xmlns:common="clr-namespace:TestApp.Common"

你需要纠正两条线

controls:ProgressRing

至

common:ProgressRing

您还需要在样式本身之前声明画笔：

或者只是将对AccentBrush的引用更改为PhoneAccentBrush.

您必须指定宽度,如果未将IsActive设置为true,则根本不会显示.您可以使用该属性进行绑定可见性:)

<common:ProgressRing Width="50"
                         IsActive="True"/>

请享用.

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