重新想象 Windows 8 Store Apps (59) - 锁屏

2022-10-12 07:26:40

介绍
重新想象 Windows 8 Store Apps 之锁屏

登录锁屏，获取当前程序的锁屏权限，从锁屏中移除
发送徽章或文本到锁屏
将一个 app 的多个 tile 绑定到锁屏
自定义锁屏图片

示例
1、演示如何登录锁屏，获取当前程序的锁屏权限，从锁屏中移除
LockScreen/AccessLockScreen.xaml

<Page

    x:Class="XamlDemo.LockScreen.AccessLockScreen"

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

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

    xmlns:local="using:XamlDemo.LockScreen"

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

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

    mc:Ignorable="d">

    <Grid Background="Transparent">

        <StackPanel Margin="120 0 0 0">

            <TextBlock Name="lblMsg" FontSize="14.667" />

            <Button Name="btnRequestAccess" Content="请求登录锁屏" Margin="0 10 0 0" Click="btnRequestAccess_Click" />

            <Button Name="btnGetAccessStatus" Content="获取当前程序的锁屏权限" Margin="0 10 0 0" Click="btnGetAccessStatus_Click" />

            <Button Name="btnRemoveAccess" Content="从锁屏中移除" Margin="0 10 0 0" Click="btnRemoveAccess_Click" />

        </StackPanel>

    </Grid>

</Page>

LockScreen/AccessLockScreen.xaml.cs

/*

 * 演示如何登录锁屏，获取当前程序的锁屏权限，从锁屏中移除

 *

 * 注：

 * 要想请求锁屏权限，需要后台任务支持“推送通知”或“控制通道”

 */

using System;

using Windows.ApplicationModel.Background;

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

namespace XamlDemo.LockScreen

{

    public sealed partial class AccessLockScreen : Page

    {

        public AccessLockScreen()

        {

            this.InitializeComponent();

        }

        private async void btnRequestAccess_Click(object sender, RoutedEventArgs e)

        {

            try

            {

                // 向系统请求登录锁屏，会弹出确认对话框

                //     需要后台任务支持“推送通知”或“控制通道”，否则会抛出异常

                //     不能在模拟器中运行

                //     如果 BackgroundAccessStatus 不等于 Unspecified，则即使调用 RequestAccessAsync() 也不会出现对话框，需要用户去“设置”中去添加或移除锁屏应用

                BackgroundAccessStatus status = await BackgroundExecutionManager.RequestAccessAsync();

                /*

                 * BackgroundAccessStatus - 当前 app 的锁屏权限

                 *     Unspecified - 用户尚未选择

                 *     Denied - 被用户拒绝

                 *     AllowedWithAlwaysOnRealTimeConnectivity - 用于允许了，且支持实时连接，即使电量低

                 *     AllowedMayUseActiveRealTimeConnectivity - 用于允许了，且支持实时连接，但是如果电量低则无法实时连接

                 */

                lblMsg.Text = "RequestAccessAsync(): " + status.ToString();

            }

            catch (Exception ex)

            {

                lblMsg.Text = ex.ToString();

            }

        }

        private void btnGetAccessStatus_Click(object sender, RoutedEventArgs e)

        {

            try

            {

                // 获取当前应用程序的锁屏权限

                BackgroundAccessStatus status = BackgroundExecutionManager.GetAccessStatus();

                lblMsg.Text = "GetAccessStatus(): " + status.ToString();

            }

            catch (Exception ex)

            {

                lblMsg.Text = ex.ToString();

            }

        }

        private void btnRemoveAccess_Click(object sender, RoutedEventArgs e)

        {

            try

            {

                // 将当前应用程序从锁屏中移除

                BackgroundExecutionManager.RemoveAccess();

                lblMsg.Text = "RemoveAccess()";

            }

            catch (Exception ex)

            {

                lblMsg.Text = ex.ToString();

            }

        }

    }

}

2、演示如何发送徽章或文本到锁屏
LockScreen/SendNotification.xaml

<Page

    x:Class="XamlDemo.LockScreen.SendNotification"

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

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

    xmlns:local="using:XamlDemo.LockScreen"

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

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

    mc:Ignorable="d">

    <Grid Background="Transparent">

        <StackPanel Margin="120 0 0 0">

            <Button Name="btnSendBadge" Content="send badage to lock screen" Click="btnSendBadge_Click" />

            <Button Name="btnSendTile" Content="send tile text to lock screen" Margin="0 10 0 0" Click="btnSendTile_Click" />

        </StackPanel>

    </Grid>

</Page>

LockScreen/SendNotification.xaml.cs

/*

 * 演示如何发送徽章或文本到锁屏

 *

 * 注：

 * 如果需要发送文本到锁屏，需要手动在“设置”中将 app 添加到“选择要显示详细状态的应用”中

 *

 * 另：

 * 关于 tile 和 badge 请参见：XamlDemo/Tile

 */

using NotificationsExtensions.BadgeContent;

using NotificationsExtensions.TileContent;

using Windows.UI.Notifications;

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

namespace XamlDemo.LockScreen

{

    public sealed partial class SendNotification : Page

    {

        public SendNotification()

        {

            this.InitializeComponent();

        }

        private void btnSendBadge_Click(object sender, RoutedEventArgs e)

        {

            // 发送 badge 到锁屏

            BadgeNumericNotificationContent badgeContent = new BadgeNumericNotificationContent();

            BadgeNotification badge = badgeContent.CreateNotification();

            BadgeUpdater badgeUpdater = BadgeUpdateManager.CreateBadgeUpdaterForApplication();

            badgeUpdater.Update(badge);

        }

        private void btnSendTile_Click(object sender, RoutedEventArgs e)

        {

            // 发送文本到锁屏，前提是此 app 在“选择要显示详细状态的应用”中

            ITileWideSmallImageAndText03 tileContent = TileContentFactory.CreateTileWideSmallImageAndText03();

            tileContent.TextBodyWrap.Text = "hello webabcd";

            tileContent.Image.Src = "ms-appx:///Assets/Logo.png";

            tileContent.RequireSquareContent = false;

            TileUpdateManager.CreateTileUpdaterForApplication().Update(tileContent.CreateNotification());

        }

    }

}

3、演示如何将一个 app 的多个 tile 绑定到锁屏
LockScreen/MultipleTiles.xaml

<Page

    x:Class="XamlDemo.LockScreen.MultipleTiles"

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

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

    xmlns:local="using:XamlDemo.LockScreen"

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

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

    mc:Ignorable="d">

    <Grid Background="Transparent">

        <StackPanel Margin="120 0 0 0">

            <Button Name="btnOnlyBadge" Content="只能发送 badge 的可以绑定到锁屏的 SecondaryTile" Click="btnOnlyBadge_Click" />

            <Button Name="btnBadgeAndText" Content="既能发送 badge 又能发送 text 的可以绑定到锁屏的 SecondaryTile" Margin="0 10 0 0" Click="btnBadgeAndText_Click" />

        </StackPanel>

    </Grid>

</Page>

LockScreen/MultipleTiles.xaml.cs

/*

 * 演示如何将一个 app 的多个 tile 绑定到锁屏

 *

 * 要想将 SecondaryTile 绑定到锁屏，需要注意：

 * 1、需要设置 SecondaryTile 的 LockScreenBadgeLogo

 * 2、如果需要文本支持则还需要设置 SecondaryTile 的 LockScreenDisplayBadgeAndTileText 为 true

 * 3、需要手动在“设置”中将 SecondaryTile 添加到锁屏，当然如果需要文本支持则需要手动将 app 添加到“选择要显示详细状态的应用”中

 */

using NotificationsExtensions.BadgeContent;

using NotificationsExtensions.TileContent;

using System;

using Windows.UI.Notifications;

using Windows.UI.Popups;

using Windows.UI.StartScreen;

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

using XamlDemo.Common;

namespace XamlDemo.LockScreen

{

    public sealed partial class MultipleTiles : Page

    {

        private string _tile1Id = "";

        private string _tile2Id = "";

        public MultipleTiles()

        {

            this.InitializeComponent();

        }

        // 仅支持 badge 的可以登录锁屏的 SecondaryTile

        private async void btnOnlyBadge_Click(object sender, RoutedEventArgs e)

        {

            SecondaryTile secondTile = new SecondaryTile(

                _tile1Id,

                "testOnlyBadge",

                "testOnlyBadge",

                "argument1",

                TileOptions.ShowNameOnLogo,

                new Uri("ms-appx:///Assets/Logo.png")

            );

            // 需要指定 LockScreenBadgeLogo

            secondTile.LockScreenBadgeLogo = new Uri("ms-appx:///Assets/BadgeLogo.png");

            bool isPinned = await secondTile.RequestCreateForSelectionAsync(Helper.GetElementRect((FrameworkElement)sender), Placement.Above);

            if (isPinned)

            {

                BadgeNumericNotificationContent badgeContent = new BadgeNumericNotificationContent();

                BadgeUpdateManager.CreateBadgeUpdaterForSecondaryTile(_tile1Id).Update(badgeContent.CreateNotification());

            }

        }

        // 即支持徽章又支持文本的可以登录锁屏的 SecondaryTile

        private async void btnBadgeAndText_Click(object sender, RoutedEventArgs e)

        {

            SecondaryTile secondTile = new SecondaryTile(

                _tile2Id,

                "testBadgeAndText",

                "testBadgeAndText",

                "argument2",

                TileOptions.ShowNameOnLogo | TileOptions.ShowNameOnWideLogo,

                new Uri("ms-appx:///Assets/Logo.png"),

                new Uri("ms-appx:///Assets/WideLogo.png")

            );

            // 需要指定 LockScreenBadgeLogo

            secondTile.LockScreenBadgeLogo = new Uri("ms-appx:///Assets/BadgeLogo.png");

            // 需要设置 LockScreenDisplayBadgeAndTileText 为 true

            secondTile.LockScreenDisplayBadgeAndTileText = true;

            bool isPinned = await secondTile.RequestCreateForSelectionAsync(Helper.GetElementRect((FrameworkElement)sender), Placement.Above);

            if (isPinned)

            {

                ITileWideText03 tileContent = TileContentFactory.CreateTileWideText03();

                tileContent.TextHeadingWrap.Text = "hello webabcd";

                tileContent.RequireSquareContent = false;

                TileUpdateManager.CreateTileUpdaterForSecondaryTile(_tile2Id).Update(tileContent.CreateNotification());

            }

        }

    }

}

4、演示如何自定义锁屏图片
LockScreen/CustomLockScreenImage.xaml

<Page

    x:Class="XamlDemo.LockScreen.CustomLockScreenImage"

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

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

    xmlns:local="using:XamlDemo.LockScreen"

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

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

    mc:Ignorable="d">

    <Grid Background="Transparent">

        <StackPanel Margin="120 0 0 0">

            <Button Name="btnDemo" Content="自定义锁屏图片" Click="btnDemo_Click" />

            <Image Name="img" Width="200" Height="200" Margin="0 10 0 0" HorizontalAlignment="Left" />

        </StackPanel>

    </Grid>

</Page>

LockScreen/CustomLockScreenImage.xaml.cs

/*

 * 演示如何自定义锁屏图片

 */

using System;

using Windows.Storage;

using Windows.Storage.Pickers;

using Windows.Storage.Streams;

using Windows.UI.Xaml;

using Windows.UI.Xaml.Controls;

using Windows.UI.Xaml.Media.Imaging;

using XamlDemo.Common;

namespace XamlDemo.LockScreen

{

    public sealed partial class CustomLockScreenImage : Page

    {

        public CustomLockScreenImage()

        {

            this.InitializeComponent();

        }

        private async void btnDemo_Click(object sender, RoutedEventArgs e)

        {

            if (Helper.EnsureUnsnapped())

            {

                FileOpenPicker imagePicker = new FileOpenPicker

                {

                    ViewMode = PickerViewMode.Thumbnail,

                    SuggestedStartLocation = PickerLocationId.PicturesLibrary,

                    FileTypeFilter = { ".jpg", ".jpeg", ".png", ".bmp" }

                };

                StorageFile imageFile = await imagePicker.PickSingleFileAsync();

                if (imageFile != null)

                {

                    // 将指定的图片设置为锁屏图片

                    await Windows.System.UserProfile.LockScreen.SetImageFileAsync(imageFile);

                    // 获取当前的锁屏图片

                    IRandomAccessStream imageStream = Windows.System.UserProfile.LockScreen.GetImageStream();

                    if (imageStream != null)

                    {

                        BitmapImage lockScreenImage = new BitmapImage();

                        lockScreenImage.SetSource(imageStream);

                        img.Source = lockScreenImage;

                    }

                }

            }

        }

    }

}

OK
[源码下载]

码农公寓

相关文章