title: Adding my custom View into an XML layout throws exception
body: <p>I'm trying to create my first custom View subclass <code>GraphView</code> and add it to my layout XML file.</p>
  
  <p>I found <a href="https://stackoverflow.com/questions/3260876/custom-view-in-xml-layout">this SO question</a> and tried to apply it to my project, but something seems to be wrong because Eclipse IDE tells me:</p>
  
  <pre><code>de.muza3000.graph.GraphView failed to instantiate.
  </code></pre>
  
  <p>and throws an exception:</p>
  
  <pre><code>java.lang.NoSuchMethodException: de.muza3000.graph.GraphView.&lt;init&gt;(android.content.Context, android.util.AttributeSet)
  at java.lang.Class.getConstructor0(Unknown Source)
  at java.lang.Class.getConstructor(Unknown Source)
  at com.android.ide.eclipse.adt.internal.editors.layout.ProjectCallback.instantiateClass(Unknown Source)
  at com.android.ide.eclipse.adt.internal.editors.layout.ProjectCallback.loadView(Unknown Source)
  at android.view.BridgeInflater.loadCustomView(BridgeInflater.java:198)
  at android.view.BridgeInflater.createViewFromTag(BridgeInflater.java:126)
  at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
  at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
  at android.view.LayoutInflater.inflate(LayoutInflater.java:296)
  at com.android.layoutlib.bridge.Bridge.computeLayout(Bridge.java:396)
  at com.android.ide.common.rendering.LayoutLibrary.createLegacySession(LayoutLibrary.java:382)
  at com.android.ide.common.rendering.LayoutLibrary.createSession(LayoutLibrary.java:276)
  at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(Unknown Source)
  at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.renderWithBridge(Unknown Source)
  at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.recomputeLayout(Unknown Source)
  at com.android.ide.eclipse.adt.internal.editors.layout.gle2.GraphicalEditorPart.activated(Unknown Source)
  at com.android.ide.eclipse.adt.internal.editors.layout.LayoutEditor.pageChange(Unknown Source)
  at org.eclipse.ui.part.MultiPageEditorPart$2.widgetSelected(MultiPageEditorPart.java:290)
  at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
  at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
  at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
  at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077)
  at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062)
  at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:774)
  at org.eclipse.swt.custom.CTabFolder.setSelection(CTabFolder.java:2743)
  at org.eclipse.swt.custom.CTabFolder.onMouse(CTabFolder.java:1429)
  at org.eclipse.swt.custom.CTabFolder$1.handleEvent(CTabFolder.java:257)
  at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84)
  at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053)
  at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4066)
  at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3657)
  at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2640)
  at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2604)
  at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2438)
  at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:671)
  at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332)
  at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:664)
  at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
  at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:115)
  at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
  at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
  at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
  at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:369)
  at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
  at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
  at java.lang.reflect.Method.invoke(Unknown Source)
  at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:619)
  at org.eclipse.equinox.launcher.Main.basicRun(Main.java:574)
  at org.eclipse.equinox.launcher.Main.run(Main.java:1407)
  </code></pre>
  
  <p>Here is my layout:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:orientation="vertical"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"&gt;
      &lt;TextView  
          android:layout_width="fill_parent" 
          android:layout_height="wrap_content" 
          android:text="@string/hello"/&gt;
      &lt;de.muza3000.graph.GraphView 
          android:layout_width="fill_parent"/&gt;
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>And my code:</p>
  
  <pre><code>package de.muza3000.graph;
  
  import android.content.Context;
  import android.util.AttributeSet;
  import android.view.View;
  
  public class GraphView extends View {
  
  
      GraphView(Context context, AttributeSet attrs, int defStyle)
      {
          super(context, attrs, defStyle);
      }   
  
  
      GraphView(Context context, AttributeSet attrs)
      {
          super(context, attrs);
      }
  
      GraphView(Context context)
      {
          super(context);
      }
  
  }
  </code></pre>