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POMonoDroid: Error when calling constructor of custom view - TwoDScrollView
 

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    <p>I am building an Android application that uses the custom-built TwoDScrollView found here:</p> <p><a href="http://blog.gorges.us/2010/06/android-two-dimensional-scrollview/">http://blog.gorges.us/2010/06/android-two-dimensional-scrollview/</a></p> <p>This same class can be found referenced at several other websites, and others on Stack Overflow have asked questions with regard to it. I was using it in a previous Android application that I was building using Java/Eclipse, and I was having success.</p> <p>With my current application, I wanted to use C# and MonoDroid. I decided to rewrite the entire TwoDScrollView class in C#. After rewriting it, and then using it in some layout XML, I get the following exceptions when trying to run my code:</p> <blockquote> <p>System.NotSupportedException has been thrown. Unable to activate instance of type MyProject.TwoDScrollView from native handle 44f4d310.</p> <p>System.Exception: No constructor found for MyProject.TwoDScrollView::.ctor(System.IntPtr, Android.Runtime.JniHandleOwnership) ......with more text that follows....</p> </blockquote> <p>My layout XML is as follows:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;myproject.TwoDScrollView android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;/myproject.TwoDScrollView&gt; &lt;/RelativeLayout&gt; </code></pre> <p>Per the instructions at the following link on using custom views in layout XML in MonoDroid: <a href="http://docs.xamarin.com/android/advanced_topics/using_custom_views_in_a_layout">http://docs.xamarin.com/android/advanced_topics/using_custom_views_in_a_layout</a></p> <p>The constructors to the TwoDScrollView class look as follows:</p> <pre><code>public TwoDScrollView(Context context) : base(context) { initTwoDScrollView(); } public TwoDScrollView(Context context, IAttributeSet attrs) : base(context, attrs) { initTwoDScrollView(); } public TwoDScrollView(Context context, IAttributeSet attrs, int defStyle) : base(context, attrs, defStyle) { initTwoDScrollView(); } </code></pre> <p>The same constructors exist in the C# version as in the Java version (which you can find at the above link). Any idea on what could be going wrong? I can post the full C# code of my TwoDScrollView if anyone would like to see it. It's essentially the same as the Java code bit for bit - except rewritten in C#.</p> <p>Thanks for any help!</p>
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