Xamarin OpenEars本機綁定在設備上不起作用，但在模擬器上起作用

Question

我一直在xamarin iOS綁定項目中使用OpenEars v2.03 iOS框架項目。 讓我解釋一下到目前為止我做了什么。我是XCode，Xamarin和所有這些Binding的新手。 這將是一個大問題，請屏住呼吸……

1）在Xcode for Simulator中構建OpenEars框架項目。 從Framework / OpenEars.framework / Versions / Current /復制了“ OpenEars”文件，並將其重命名為“ libOpenEars-i386.a ”

同樣，通過將設備連接到Mac並選擇目標到我的iPhone，為iPhone 4s設備構建相同的庫。 最后復制生成的OpenEars，並將其重命名為“ libOpenEars-armv7.a ”

2）使用lipo命令，使用以下命令將兩個文件（libOpenEars-i386.a，libOpenEars-armv7.a）捆綁為一個文件“ libOpenEars.a”。

lipo -create -output libOpenEars.a libOpenEars-i386.a libOpenEars-armv7.a 

3）在Xamarin Studio中創建一個Binding項目並添加libOpenEars.a，它會自動生成一個libOpenEars.linkwith.cs 。 以下是以下代碼，

using System;
using ObjCRuntime;

[assembly: LinkWith ("libOpenEars.a", LinkTarget.ArmV7 | LinkTarget.Simulator, SmartLink = true, ForceLoad = true, Frameworks="AudioToolbox AVFoundation", IsCxx=true, LinkerFlags = "-lstdc++")]

我嘗試過更改Liker標志LinkerFlags =“ -lstdc ++ -lc ++ -ObjC”和SmartLink = false。

4）我的ApiDefinition文件包含OpenEars的所有接口，我在這里僅添加了一個接口。

[BaseType(typeof(NSObject))]
[Protocol]
interface OEEventsObserver
{
    [Wrap ("WeakDelegate")]
    OEEventsObserverDelegate Delegate { get; set; }

    [Export ("delegate", ArgumentSemantic.Assign), NullAllowed]
    NSObject WeakDelegate { get; set; }
}

5）將OpenEars.dll引用到我的iOS示例項目。

6）在綁定庫本身中添加語言模型和聲學模型。 （即使不需要動態語言模型生成，我也使用了OpenEars Xamarin git中的舊OpenEars示例項目，沒有使用新的DynamicLanguageModel生成器，而是修改了示例以進行最新更改）。

視圖控制器：

public partial class OpenEarsNewApiViewController : UIViewController
{
    OEEventsObserver observer;
    OEFliteController fliteController;
    OEPocketsphinxController pocketSphinxController;


    String pathToLanguageModel;
    String pathToDictionary;
    String pathToAcousticModel;

    String firstVoiceToUse;
    String secondVoiceToUse;

    static bool UserInterfaceIdiomIsPhone {
        get { return UIDevice.CurrentDevice.UserInterfaceIdiom == UIUserInterfaceIdiom.Phone; }
    }

    public void init()
    {
        try
        {
            observer = new OEEventsObserver();
            observer.Delegate = new OpenEarsEventsObserverDelegate (this);
            pocketSphinxController = new OEPocketsphinxController ();

            fliteController = new OEFliteController();

            firstVoiceToUse = "cmu_us_slt";
            secondVoiceToUse = "cmu_us_rms";

            pathToLanguageModel = NSBundle.MainBundle.ResourcePath + System.IO.Path.DirectorySeparatorChar + "OpenEars1.languagemodel";
            pathToDictionary = NSBundle.MainBundle.ResourcePath + System.IO.Path.DirectorySeparatorChar + "OpenEars1.dic";
            pathToAcousticModel = NSBundle.MainBundle.ResourcePath;
        }
        catch(Exception e) {
            Console.WriteLine ("Exception Message :"+e.Message);
            Console.WriteLine ("Inner Exception Mesage :"+e.InnerException.Message);
        }

    }

    public OpenEarsNewApiViewController (IntPtr handle) : base (handle)
    {
        init ();
    }

    #region Update

    public void UpdateStatus (String text)
    {
        txtStatus.Text = text;
    }

    public void UpdateText (String text)
    {
        txtOutput.Text = text;
    }

    public void UpdateButtonStates (bool hidden1, bool hidden2, bool hidden3, bool hidden4)
    {
        btnStartListening.Hidden = hidden1;
        btnStopListening.Hidden = hidden2;
        btnSuspend.Hidden = hidden3;
        btnResume.Hidden = hidden4;
    }

    public void Say (String text)
    {
        //fliteController.SaywithVoice (text, secondVoiceToUse);
    }

    public void StartListening ()
    {
        //pocketSphinxController.RequestMicPermission ();
        if (!pocketSphinxController.IsListening) {

            //NSString *correctPathToMyLanguageModelFile = [NSString stringWithFormat:@"%@/TheNameIChoseForMyLanguageModelAndDictionaryFile.%@",[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0],@"DMP"];


            pocketSphinxController.StartListeningWithLanguageModelAtPath (
                pathToLanguageModel,
                pathToDictionary,
                pathToAcousticModel,
                false
            );
        } else {
            new UIAlertView ("Notify !!","Already Listening",null,"OK","Stop").Show();

        }

    }

    public void StopListening ()
    {
        //pocketSphinxController.StopListening ();
    }

    public void SuspendRecognition ()
    {
        pocketSphinxController.SuspendRecognition ();
    }

    public void ResumeRecognition ()
    {
        pocketSphinxController.ResumeRecognition ();
    }

    #endregion

    #region Event Handlers

    partial void btnStartListening_TouchUpInside (UIButton sender)
    {
        try
        {
            StartListening();
            //fliteController.Init();
            //Console.WriteLine("Speech in Progress :"+fliteController.SpeechInProgress);
            //fliteController.Say("Hai", new OEFliteVoice());

            UpdateButtonStates (true, false, false, true);
            Console.WriteLine("Speech in Progress :"+fliteController.SpeechInProgress);
        }
        catch(Exception e)
        {
            Console.WriteLine(e.Message);
        }
    }

    partial void btnStopListening_TouchUpInside (UIButton sender)
    {
        StopListening ();
        UpdateButtonStates (false, true, true, true);
    }

    partial void btnSuspend_TouchUpInside (UIButton sender)
    {
        SuspendRecognition ();
        UpdateButtonStates (true, false, true, false);
    }

    partial void btnResume_TouchUpInside (UIButton sender)
    {
        ResumeRecognition ();
        UpdateButtonStates (true, false, false, true);
    }
}

OpenEarsEventsObserverDelegate：

// nothing much here just to check the status and debugging 

public class OpenEarsEventsObserverDelegate:OEEventsObserverDelegate
{
    OpenEarsNewApiViewController _controller;

    public OpenEarsNewApiViewController controller {
        get {
            return _controller;
        }
        set {
            _controller = value;
        }
    }

    public OpenEarsEventsObserverDelegate (OpenEarsNewApiViewController ctrl)
    {
        controller = ctrl;
    }

    public override void PocketsphinxRecognitionLoopDidStart()
    {
        //base.PocketsphinxRecognitionLoopDidStart();

        Console.WriteLine ("Pocketsphinx is starting up");
        controller.UpdateStatus ("Pocketsphinx is starting up");
    }

    public override void PocketsphinxDidReceiveHypothesis (Foundation.NSString hypothesis, Foundation.NSString recognitionScore, Foundation.NSString utteranceID)
    {
        controller.UpdateText ("Heard: " + hypothesis);
        controller.Say ("You said: " + hypothesis);
    }

    public override void PocketSphinxContinuousSetupDidFail ()
    {

    }

    public override void PocketsphinxDidCompleteCalibration ()
    {
        Console.WriteLine ("Pocket calibration is complete");
        controller.UpdateStatus ("Pocket calibratio is complete");
    }

    public override void PocketsphinxDidDetectSpeech ()
    {

    }

    public override void PocketsphinxDidStartListening ()
    {
        Console.WriteLine ("Pocketsphinx is now listening");
        controller.UpdateStatus ("Pocketphinx is now listening");
        controller.UpdateButtonStates (true, false, false, true);
    }

    public override void PocketsphinxDidStopListening ()
    {

    }

    public override void PocketsphinxDidStartCalibration ()
    {
        Console.WriteLine ("Pocketsphinx calibration has started.");
        controller.UpdateStatus ("Pocketsphinx calibration has started");
    }

    public override void PocketsphinxDidResumeRecognition ()
    {

    }

    public override void PocketsphinxDidSuspendRecognition ()
    {

    }

    public override void PocketsphinxDidDetectFinishedSpeech ()
    {

    }

    public override void FliteDidStartSpeaking ()
    {

    }

    public override void FliteDidFinishSpeaking ()
    {

    }
}

這在iOS模擬器上完美運行，但不能在真實設備上運行。

我在設備上運行時收到此錯誤消息。所有接口都收到相同的消息。

Exception Message :Wrapper type 'OpenEars.OEEventsObserver' is missing its native ObjectiveC class 'OEEventsObserver'.

2015-05-15 12:55:26.996 OpenEarsNewApi[1359:231264] Unhandled managed  exception: Exception has been thrown by the target of an invocation.  (System.Reflection.TargetInvocationException)
at System.Reflection.MonoCMethod.InternalInvoke (System.Object obj,   System.Object[] parameters) [0x00016] in   /Developer/MonoTouch/Source/mono/mcs/class/corlib/System.Reflection/MonoMethod.cs:543 

我是否缺少與綁定設備有關的任何內容？

我也嘗試使用make文件構建相同的.dll，但是得到了相同的錯誤消息。

對於構建OpenEars框架：

xcodebuild -project OpenEars.xcodeproj -target OpenEars -sdk iphonesimulator8.2 -arch i386 -configuration Release clean build

xcodebuild -project OpenEars.xcodeproj -target OpenEars -sdk iphoneos -arch armv7 -configuration Release clean build

用於生成OpenEars.dll的文件

BTOUCH=/Developer/MonoTouch/usr/bin/btouch-native

all: OpenEars.dll


OpenEars.dll: AssemblyInfo.cs OpenEars.cs libOpenEars.a
$(BTOUCH) -unsafe --new-style -out:$@ OpenEars.cs -x=AssemblyInfo.cs --link-with=libOpenEars.a,libOpenEars.a

clean:
   -rm -f *.dll

在此處檢查完整的mtouch 錯誤日志

$lipo -info libOpenEars.a

Architectures in the fat file: libOpenEars.a are: i386 armv7 

檢查$ nm -arch armv7 libOpenEars.a

nm命令輸出在這里

檢查模擬器中是否存在OEEvent（i386）

$ nm -arch i386 libOpenEars.a | grep OEEvent

輸出值

U _OBJC_CLASS_$_OEEventsObserver
00006aa0 S l_OBJC_LABEL_PROTOCOL_$_OEEventsObserverDelegate
000076f0 S l_OBJC_PROTOCOL_$_OEEventsObserverDelegate
warning: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm: no name list
libOpenEars.a(OEEventsObserver.o):
00002174 S _OBJC_CLASS_$_OEEventsObserver
00002170 S _OBJC_IVAR_$_OEEventsObserver._delegate
00002188 S _OBJC_METACLASS_$_OEEventsObserver
     U _OBJC_CLASS_$_OEEventsObserver
00002d90 S l_OBJC_LABEL_PROTOCOL_$_OEEventsObserverDelegate
000035a0 S l_OBJC_PROTOCOL_$_OEEventsObserverDelegate

檢查armEvent7中是否存在OEEvent

$nm -arch armv7 libOpenEars.a | grep OEEvent

輸出值

 U _OBJC_CLASS_$_OEEventsObserver
00005680 S l_OBJC_LABEL_PROTOCOL_$_OEEventsObserverDelegate
000062d8 S l_OBJC_PROTOCOL_$_OEEventsObserverDelegate
warning:    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/nm: no name list
libOpenEars.a(OEEventsObserver.o):
00001cb4 S _OBJC_CLASS_$_OEEventsObserver
00001cb0 S _OBJC_IVAR_$_OEEventsObserver._delegate
00001cc8 S _OBJC_METACLASS_$_OEEventsObserver
     U _OBJC_CLASS_$_OEEventsObserver
00002638 S l_OBJC_LABEL_PROTOCOL_$_OEEventsObserverDelegate
00002e50 S l_OBJC_PROTOCOL_$_OEEventsObserverDelegate

我不確定我缺少什么。 是的，這里有很多語法錯誤，我感謝您花時間閱讀本文。

Answer 1

感謝@poupou和@Halle的寶貴意見。 最后，我使用包括arm64和x86_64（必須）在內的所有架構來構建胖二進制文件。 使用lipo將所有內容打包在一個package.Now中，它現在就像魅力！...還要設置項目屬性-> Advanced-> SupportedArchi。 -> ARMv7，可在ipad 2和iPhone 4等設備上運行。仍然需要在iPhone 6和6+中進行測試，我希望它們也可能支持，因為它們是arm64系列。 我不確定這在ARMv7（iPhone 5，iPhone 5c，iPad 4）上如何工作。 我在OpenEars v2.03中沒有看到ARMv7s支持。