将Brother PJ-673 SDK（Objective-C）绑定到MonotTouch

我正在为Brother PJ-673便携式打印机创建单触式装订。这将在Xamarin.iOS iPad/iPhone应用程序中使用。Brother提供了Objective-C中的SDK，可在

首先，我使用了Xamarin MonoTouch Binding Objective-C指南并创建了一个绑定项目，该项目似乎运行良好。下面是我的ApiDefinition.cs文件（将Objective Sharpie用于该文件的初稿，然后手动更改）

MonoTouch绑定项目编译成功，因此接下来我创建了一个小型测试应用程序。下面的代码是如何创建相关兄弟类型的本机实例：

partial void PrintTouchDown (NSObject sender)
        {       
            // Initialize printer settings
            BrotherPrintTouchPrintInfo printInfo = new BrotherPrintTouchPrintInfo();

            printInfo.PaperName = "A4_CutSheet";
            printInfo.PrintMode = (int)PrintMode.PRINT_FIT;
            printInfo.Density = 5;
            printInfo.Orientation = (int)Orientation.ORI_PORTRATE;
            printInfo.Halftone = (int)Halftone.HALFTONE_ERRDIF;
            printInfo.HorizontalAlign = (int)HorizontalAlign.ALIGN_CENTER;
            printInfo.VerticalAlign = (int)VerticalAlign.ALIGN_MIDDLE;
            printInfo.PaperAlign = (int)PaperAlign.PAPERALIGN_LEFT;
            printInfo.ExtFlag |= 0;

            // Initialize PJ-673 printer
            BrotherPrintTouchPrinter printer = new BrotherPrintTouchPrinter("Brother PJ-673");
            printer.SetIPAddress("10.20.2.104");
            printer.SetPrintInfo(printInfo);

            //printer.PrintImage(selectedImage.CGImage, 1, 1000);
        }

在调用printer.SetPrinterInfo（printInfo）之前，一切正常。这就是应用程序崩溃的地方，毫无例外。应用程序输出为：

mono-rt: Stacktrace:

mono-rt:   at <unknown> <0xffffffff>
mono-rt:   at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging.int_objc_msgSend_IntPtr (intptr,intptr,intptr) <IL 0x00027, 0xffffffff>
mono-rt:   at BrotherTouchPrinterBinding.BrotherPrintTouchPrinter.SetPrintInfo (BrotherTouchPrinterBinding.BrotherPrintTouchPrintInfo) <IL 0x0002f, 0x000df>
mono-rt:   at BrotherTouchPrinter.iOS.BrotherTouchPrinter_iOSViewController.PrintTouchDown (MonoTouch.Foundation.NSObject) [0x00069] in /Users/claudiu/Projects/BrotherTouchPrinterBinding/BrotherTouchPrinter.iOS/BrotherTouchPrinter.iOSViewController.cs:82
mono-rt:   at (wrapper runtime-invoke) <Module>.runtime_invoke_void__this___object (object,intptr,intptr,intptr) <IL 0x00052, 0xffffffff>
mono-rt:   at <unknown> <0xffffffff>
mono-rt:   at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <IL 0x0009f, 0xffffffff>
mono-rt:   at MonoTouch.UIKit.UIApplication.Main (string[],string,string) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
mono-rt:   at BrotherTouchPrinter.iOS.Application.Main (string[]) [0x00008] in /Users/claudiu/Projects/BrotherTouchPrinterBinding/BrotherTouchPrinter.iOS/Main.cs:16
mono-rt:   at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff
mono-rt: 
Native stacktrace:

mono-rt: 
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================

mono-rt:Stacktrace:
mono-rt:at
mono rt:at（包装器管理为本机）MonoTouch.ObjCRuntime.Messaging.int_objc_msgSend_IntPtr（IntPtr，IntPtr，IntPtr）
mono rt:位于BrotherTouchPrinterBinding.BrotherPrintTouchPrinter.SetPrintInfo（BrotherTouchPrinterBinding.BrotherPrintTouchPrintInfo）
Muno RT：在BooTouthPr.PrTr.IO.BothTouthPrPiTrnIOVIEWSCORDER .PrimTutouChutWON（MangouCuff.Fask.NSObjult[0x000 069]）中/用户/ Coudiu/Studio / BooTouTousPrPultBuff/BooTouTouChink。iOSVIEW控制器。CS：82
mono rt:at（包装器运行时调用）。运行时调用此对象（对象、intptr、intptr、intptr）
mono-rt:at
mono rt:at（包装器管理为本机）MonoTouch.UIKit.UIApplication.UIApplicationMain（int，string[]，intptr，intptr）
mono-rt:at MonoTouch.UIKit.UIApplication.Main（string[]，string，string）[0x0004c]in/Developer/MonoTouch/Source/MonoTouch/src/UIKit/UIApplication.cs:38
mono rt:BrotherTouchPrinter.iOS.Application.Main（string[]）[0x00008]在/Users/claudiu/Projects/BrotherTouchPrinterBinding/BrotherTouchPrinter.iOS/Main.cs:16中
mono rt:at（包装器运行时调用）。运行时调用无效对象（对象，intptr，intptr，intptr）您提供的堆栈跟踪显示：

mono rt:在BrotherTouchPrinterBinding.BrotherPrintTouchPrinter.PrintImage
（MonoTouch.CoreGraphics.CGImage，int，int）

即：

在调用
printer.SetPrinterInfo（printInfo）
之后，它似乎不会在那里崩溃

源代码中有一行注释

您确定源代码（以上）与堆栈跟踪匹配吗

或者，您的意思是崩溃发生在之后（打印时），但仅在调用
printer.SetPrinterInfo（printInfo）
时发生

注意：您可以编辑您的问题以添加/更新信息
好的，我已经更新了stacktrace。没错stacktrace是为
PrintImage
调用准备的。我尝试了
SetPrinterInfo
和
PrintImage
两种方法只是为了检查，结果都是一样的。你有没有找到答案？我甚至无法通过第一行。我得到以下错误。无法创建类型为“bpsdkBinding.BRPtouchPrintInfo”的本机实例：尚未加载本机类。通过将ObjCRuntime.Class.ThrowOnInitFailure设置为false，可以忽略此条件。是否有人在iOS、Xamarin和Brother print SDK之间有完全工作的链接？我已经编译并运行了它，但它实际上没有打印任何东西（我也找不到任何错误消息）。（此解决方案中的android版本确实有效。）我没有捕获PrintImage函数返回的int，这是错误消息。我已经用iOS和Android的工作代码更新了我的github项目，如果有人发现了这条评论，并且想要一个Xamarin brother打印机的示例，它可以打印。
mono-rt: Stacktrace:

mono-rt:   at <unknown> <0xffffffff>
mono-rt:   at (wrapper managed-to-native) MonoTouch.ObjCRuntime.Messaging.int_objc_msgSend_IntPtr (intptr,intptr,intptr) <IL 0x00027, 0xffffffff>
mono-rt:   at BrotherTouchPrinterBinding.BrotherPrintTouchPrinter.SetPrintInfo (BrotherTouchPrinterBinding.BrotherPrintTouchPrintInfo) <IL 0x0002f, 0x000df>
mono-rt:   at BrotherTouchPrinter.iOS.BrotherTouchPrinter_iOSViewController.PrintTouchDown (MonoTouch.Foundation.NSObject) [0x00069] in /Users/claudiu/Projects/BrotherTouchPrinterBinding/BrotherTouchPrinter.iOS/BrotherTouchPrinter.iOSViewController.cs:82
mono-rt:   at (wrapper runtime-invoke) <Module>.runtime_invoke_void__this___object (object,intptr,intptr,intptr) <IL 0x00052, 0xffffffff>
mono-rt:   at <unknown> <0xffffffff>
mono-rt:   at (wrapper managed-to-native) MonoTouch.UIKit.UIApplication.UIApplicationMain (int,string[],intptr,intptr) <IL 0x0009f, 0xffffffff>
mono-rt:   at MonoTouch.UIKit.UIApplication.Main (string[],string,string) [0x0004c] in /Developer/MonoTouch/Source/monotouch/src/UIKit/UIApplication.cs:38
mono-rt:   at BrotherTouchPrinter.iOS.Application.Main (string[]) [0x00008] in /Users/claudiu/Projects/BrotherTouchPrinterBinding/BrotherTouchPrinter.iOS/Main.cs:16
mono-rt:   at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <IL 0x00050, 0xffffffff
mono-rt: 
Native stacktrace:

mono-rt: 
=================================================================
Got a SIGSEGV while executing native code. This usually indicates
a fatal error in the mono runtime or one of the native libraries 
used by your application.
=================================================================