1、效果
2、前台代码
<StackLayout>
<Frame
Padding="24"
BackgroundColor="#2196F3"
CornerRadius="0">
<Label
FontSize="30"
HorizontalTextAlignment="Center"
Text="树霉派小车控制器"
TextColor="White" />
</Frame>
<Label
x:Name="lbInfo"
Padding="30,10,30,10"
FontSize="18"
Text="Wait Info!" />
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="50" />
<RowDefinition Height="50" />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<StackLayout Grid.ColumnSpan="3" Orientation="Horizontal">
<Label
Margin="15,0,0,0"
Text="IP地址："
VerticalTextAlignment="Center" />
<Editor x:Name="tbIP" WidthRequest="200" />
</StackLayout>
<StackLayout
Grid.Row="1"
Grid.ColumnSpan="3"
Orientation="Horizontal">
<Label Text="通讯端口：" VerticalTextAlignment="Center" />
<Editor x:Name="tbPort" WidthRequest="200" />
</StackLayout>
<Button
Grid.Row="0"
Grid.Column="3"
Clicked="Button_Click"
Text="连接服务" />
<Button
Grid.Row="1"
Grid.Column="3"
Clicked="Button_Click"
Text="断开服务" />
<Button
Grid.Row="2"
Grid.Column="0"
Clicked="Button_Click"
Text="手动模式" />
<Button
Grid.Row="2"
Grid.Column="1"
Clicked="Button_Click"
Text="自动模式" />
<Button
Grid.Row="2"
Grid.Column="2"
Clicked="Button_Click"
Text="智能模式" />
<Button
Grid.Row="3"
Grid.Column="0"
Clicked="Button_Click"
Text="加速" />
<Button
Grid.Row="3"
Grid.Column="1"
Clicked="Button_Click"
Text="减速" />
<Button
x:Name="butFornt"
Grid.Row="4"
Grid.Column="1"
Pressed="ButPressed_Click"
Released="ButReleased_Click"
Text="前" />
<Button
x:Name="butLeft"
Grid.Row="5"
Grid.Column="0"
Pressed="ButPressed_Click"
Released="ButReleased_Click"
Text="左" />
<Button
x:Name="butRight"
Grid.Row="5"
Grid.Column="2"
Pressed="ButPressed_Click"
Released="ButReleased_Click"
Text="右" />
<Button
x:Name="butBack"
Grid.Row="6"
Grid.Column="1"
Pressed="ButPressed_Click"
Released="ButReleased_Click"
Text="后" />
</Grid>
</StackLayout>
3、后台代码
public partial class MainPage : ContentPage
{
TcpClient client = null;
public MainPage()
{
InitializeComponent();
}
private void Button_Click(object sender, EventArgs e)
{
Button but = sender as Button;
if (but != null)
{
string tag = but.Text;
switch (tag)
{
case "连接服务":
try
{
IPAddress address = IPAddress.Parse(tbIP.Text.Trim());
int port = Convert.ToInt32(tbPort.Text.Trim());
IPEndPoint endPoint = new IPEndPoint(address, port);
client = new TcpClient();
client.Connect(endPoint);
SetInfo("连接服务器成功！");
}
catch (Exception ex)
{
SetInfo("连接服务器异常：" + ex.Message);
}
break;
case "断开服务":
try
{
client.Close();
SetInfo("断开服务器成功！");
}
catch (Exception ex)
{
SetInfo("断开服务器异常：" + ex.Message);
}
break;
case "手动模式":
SendMsgToServer("s");
break;
case "自动模式":
SendMsgToServer("a");
break;
case "智能模式":
SendMsgToServer("mu");
break;
case "加速":
SendMsgToServer("up");
break;
case "减速":
SendMsgToServer("down");
break;
default:
SetInfo("按钮关联事件失败");
break;
}
}
}
private void SetInfo(string msg)
{
lbInfo.Text = msg;
}
private void ButReleased_Click(object sender, EventArgs e)
{
Button but = sender as Button;
if (but != null)
{
string tag = but.Text;
switch (tag)
{
case "前":
case "后":
case "左":
case "右":
SendMsgToServer("s");
break;
default:
SetInfo("按钮关联事件失败");
break;
}
}
}
private void SendMsgToServer(string msg)
{
if (client == null)
{
return;
}
try
{
byte[] data = System.Text.Encoding.ASCII.GetBytes(msg);
client.GetStream().Write(data, 0, data.Length);
SetInfo("发送信息至服务器：" + msg);
}
catch (Exception ex)
{
SetInfo("发送信息至服务器异常：" + ex.Message);
}
}
private void ButPressed_Click(object sender, EventArgs e)
{
Button but = sender as Button;
if (but != null)
{
string tag = but.Text;
switch (tag)
{
case "前":
SendMsgToServer("f");
break;
case "后":
SendMsgToServer("b");
break;
case "左":
SendMsgToServer("l");
break;
case "右":
SendMsgToServer("r");
break;
default:
SetInfo("按钮关联事件失败");
break;
}
}
}
}