WPF开发随笔收录-仿安卓Toast
WPF开发随笔收录-仿安卓Toast
一、前言
在项目中,经常需要用到消息提醒功能,在以前接触安卓开发那会使用过Toast,于是打算在WPF上也来模仿一个,话不多说,撸起袖子干起来!
二、正文
1、首先新建一个工程,工程的目录如下

2、编写Toast.cs的代码,这里因为只需要显示文本信息,所以Toast继承Label即可,然后添加一个定时关闭的方法
public class Toast : Label
{
public Toast()
{
}
public void SetTimeClose(TimeSpan time)
{
new Thread(() =>
{
Thread.Sleep(time);
if (this.Parent is Panel)
{
this.Dispatcher.BeginInvoke(new Action(() =>
{
(this.Parent as Panel).Children.Remove(this);
}));
}
})
{ IsBackground = true }.Start();
}
}
3、接着编写一下Toast控件的样式
<Style TargetType="{x:Type ctls:Toast}">
<Setter Property="Foreground" Value="White" />
<Setter Property="FocusVisualStyle" Value="{x:Null}" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ctls:Toast}">
<Border
MinWidth="50"
MinHeight="50"
Padding="25,0"
Background="#90000000"
CornerRadius="2">
<Border.Effect>
<DropShadowEffect BlurRadius="10" ShadowDepth="1" />
</Border.Effect>
<ContentPresenter
HorizontalAlignment="Center"
VerticalAlignment="Center"
TextBlock.FontSize="14" />
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
4、编辑MainWindow.xaml文件,其中StackPanel是用来添加Toast控件的容器
<Window x:Class="ToastDemo.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:ToastDemo"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Grid>
<Button
Width="100"
Height="50"
Content="Button"
Click="Button_Click"/>
</Grid>
<StackPanel
Name="ToastPanel"
Margin="0,80,30,0"
HorizontalAlignment="Center"
VerticalAlignment="Top" />
</Grid>
</Window>
5、接着编写后台代码,添加一个ShowToast方法来生成一个Toast到ToastPanel
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
ShowToast("这是一个Toast");
}
public void ShowToast(string text, TimeSpan? time = null)
{
Toast toast = new Toast();
toast.Content = text;
toast.Margin = new Thickness(0, 10, 0, 0);
ToastPanel.Children.Add(toast);
if (time == null)
{
toast.SetTimeClose(TimeSpan.FromSeconds(5));
}
else
{
toast.SetTimeClose(time.Value);
}
}
}
6、运行一下看一下效果,可以看到想要的基本效果已经完成了

漫思

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