title: Error including Android-DirectionalViewPager .jar in Eclipse
body: <p>I am trying to implement vertical swiping in my app. (Its just like the swiping with <a href="http://android-developers.blogspot.de/2011/08/horizontal-view-swiping-with-viewpager.html">ViewPager</a>, but vertically).</p>
  
  <p>I found Jake Whartons library <a href="https://github.com/JakeWharton/Android-DirectionalViewPager">Android-DirectionalViewPager</a>. It is a standalone .jar file which should be included in addition to the compatibility library. 
  I included the file in my project. It is now under 'Referenced Libraries', just like the compatibility library.<br>
  But the problem is, I cant even get the example, which is given with the library, to work.
  The debugger stops at line</p>
  
  <pre><code>setContentView(R.layout.main);
  </code></pre>
  
  <p>with 'No source found'</p>
  
  <p>LogCat throws this error:
  "05-23 14:43:13.583: E/dalvikvm(329): Could not find class 'com.directionalviewpager.DirectionalViewPager', referenced from method own.vvp.MainActivity.onCreate
  "</p>
  
  <p>Has somebody already used this library? I need some help :)</p>
  
  <p>here is my code:</p>
  
  <p>the manifest:</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="own.vvp"
  android:versionCode="1"
  android:versionName="1.0" &gt;
  
  &lt;uses-sdk android:minSdkVersion="7" /&gt;
  
  &lt;application
      android:icon="@drawable/ic_launcher"
      android:label="@string/app_name" &gt;
      &lt;activity
          android:name=".MainActivity"
          android:label="@string/app_name" &gt;
          &lt;intent-filter&gt;
              &lt;action android:name="android.intent.action.MAIN" /&gt;
  
              &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
          &lt;/intent-filter&gt;
      &lt;/activity&gt;
  &lt;/application&gt;
  
  &lt;/manifest&gt;
  </code></pre>
  
  <p>the layout:</p>
  
  <pre><code>&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;com.directionalviewpager.DirectionalViewPager
      android:id="@+id/pager"
      android:layout_width="fill_parent"
      android:layout_height="0dp"
      android:layout_weight="1"
      /&gt;
  
  &lt;LinearLayout
      android:layout_width="fill_parent"
      android:layout_height="wrap_content"
      android:padding="2dp"
      android:orientation="horizontal"&gt;
  
      &lt;Button
          android:id="@+id/horizontal"
          android:layout_width="0dp"
          android:layout_weight="1"
          android:layout_height="wrap_content"
          android:layout_marginRight="1dp"
          android:text="Horizontal" /&gt;
      &lt;Button
          android:id="@+id/vertical"
          android:layout_width="0dp"
          android:layout_weight="1"
          android:layout_height="wrap_content"
          android:layout_marginLeft="1dp"
          android:text="Vertical" /&gt;
  
  &lt;/LinearLayout&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>and the main activity:</p>
  
  <pre><code>package own.vvp;
  import android.os.Bundle;
  import android.support.v4.app.FragmentActivity;
  import android.view.View;
  import android.widget.Button;
  import com.directionalviewpager.DirectionalViewPager;
  
  
  public class MainActivity extends FragmentActivity {
  @Override
  protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
  
      //Set up the pager
      final DirectionalViewPager pager = (DirectionalViewPager)findViewById(R.id.pager);
      pager.setAdapter(new TestFragmentAdapter(getSupportFragmentManager()));
  
      //Bind to control buttons
      ((Button)findViewById(R.id.horizontal)).setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              pager.setOrientation(DirectionalViewPager.HORIZONTAL);
          }
      });
      ((Button)findViewById(R.id.vertical)).setOnClickListener(new View.OnClickListener() {
          @Override
          public void onClick(View v) {
              pager.setOrientation(DirectionalViewPager.VERTICAL);
          }
      });
  }
  }
  </code></pre>
  
  <p>it is the same code as in the example, except for the package name and the name of the main activity, so I guess, the way I included the library must be wrong.</p>
  
  <p>Thanks!</p>