xamarin.forms 蓝牙打印
时间: 2023-08-30 08:05:25 浏览: 109
Xamarin.Forms可以使用BluetoothPrinter插件实现蓝牙打印功能。
1. 在Xamarin.Forms项目中安装BluetoothPrinter插件:
在NuGet包管理器中搜索并安装BluetoothPrinter插件。
2. 创建蓝牙打印机连接:
```csharp
using BluetoothPrinter;
using System.Threading.Tasks;
public async Task<bool> ConnectBluetoothPrinter(string macAddress)
{
var printer = new BluetoothPrinterManager(macAddress);
var connectResult = await printer.ConnectAsync();
if (connectResult)
{
// 连接成功
return true;
}
else
{
// 连接失败
return false;
}
}
```
3. 打印文本:
```csharp
public async Task PrintText(string macAddress, string text)
{
var printer = new BluetoothPrinterManager(macAddress);
var connectResult = await printer.ConnectAsync();
if (connectResult)
{
// 连接成功,打印文本
await printer.PrintTextAsync(text);
printer.Disconnect();
}
}
```
4. 打印图片:
```csharp
public async Task PrintImage(string macAddress, string imagePath)
{
var printer = new BluetoothPrinterManager(macAddress);
var connectResult = await printer.ConnectAsync();
if (connectResult)
{
// 连接成功,打印图片
await printer.PrintImageAsync(imagePath);
printer.Disconnect();
}
}
```
注意:在Android项目中需要添加以下权限:
```xml
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
```
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