title: Unable to fill List Layout in App
body: <p>I'm attempting to write my first android app and am having a little
  problem with filling a List Layout from a DB.</p>
  
  <p>The project itself is here: </p>
  
  <p><a href="http://code.google.com/p/biofuelsfinder/" rel="nofollow noreferrer">http://code.google.com/p/biofuelsfinder/</a></p>
  
  <p>However the specific code I'm having the problem with is here:</p>
  
  <pre><code>public void fillData(String fueltype){
          ArrayList&lt;String&gt; items = new ArrayList&lt;String&gt;();
          Cursor retailers = biofuelsDB.getRetailers("b5");
          /*while(!retailers.isAfterLast()){
                  retailers.moveToNext();
                  try{
                      items.add(retailers.getString(retailers.getColumnIndex("name")));
                  } catch(IllegalStateException e){
                      String msg = e.getMessage();
                  }
                  //items.add(user.lastName);
                  //items.add(user.country);
          }*/
  
          items.add("Blah1");
          items.add("Blah2");
          items.add("Blah3");
  
          ArrayAdapter&lt;String&gt; adapter = new ArrayAdapter&lt;String&gt;(this,
               R.layout.retailers_row, items);
          /*setListAdapter(adapter);*/
  }
  </code></pre>
  
  <p>The two portions commented out, if run cause and illegalStateException
  error which then aborts the code.</p>
  
  <p>If anyone could have a look and let me know what I'm going wrong that
  would be most appreciated.</p>
  
  <p>Below is the stacktrace</p>
  
  <pre><code>W/dalvikvm(  208): threadid=3: thread exiting with uncaught exception (group=0x4001b188)
  E/AndroidRuntime(  208): Uncaught handler: thread main exiting due to uncaught exception
  E/AndroidRuntime(  208): java.lang.IllegalStateException: Could not execute method of the activity
  E/AndroidRuntime(  208):    at android.view.View$1.onClick(View.java:2031)
  E/AndroidRuntime(  208):    at android.view.View.performClick(View.java:2364)
  E/AndroidRuntime(  208):    at android.view.View.onTouchEvent(View.java:4179)
  E/AndroidRuntime(  208):    at android.widget.TextView.onTouchEvent(TextView.java:6532)
  E/AndroidRuntime(  208):    at android.view.View.dispatchTouchEvent(View.java:3709)
  E/AndroidRuntime(  208):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
  E/AndroidRuntime(  208):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
  E/AndroidRuntime(  208):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
  E/AndroidRuntime(  208):    at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:882)
  E/AndroidRuntime(  208):    at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:1659)
  E/AndroidRuntime(  208):    at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1107)
  E/AndroidRuntime(  208):    at android.app.Activity.dispatchTouchEvent(Activity.java:2061)
  E/AndroidRuntime(  208):    at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:1643)
  E/AndroidRuntime(  208):    at android.view.ViewRoot.handleMessage(ViewRoot.java:1690)
  E/AndroidRuntime(  208):    at android.os.Handler.dispatchMessage(Handler.java:99)
  E/AndroidRuntime(  208):    at android.os.Looper.loop(Looper.java:123)
  E/AndroidRuntime(  208):    at android.app.ActivityThread.main(ActivityThread.java:4310)
  E/AndroidRuntime(  208):    at java.lang.reflect.Method.invokeNative(Native Method)
  E/AndroidRuntime(  208):    at java.lang.reflect.Method.invoke(Method.java:521)
  E/AndroidRuntime(  208):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:860)
  E/AndroidRuntime(  208):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:618)
  E/AndroidRuntime(  208):    at dalvik.system.NativeStart.main(Native Method)
  E/AndroidRuntime(  208): Caused by: java.lang.reflect.InvocationTargetException
  E/AndroidRuntime(  208):    at com.biofuelsfinder.biofuelsfinder.buttonClickHandler(biofuelsfinder.java:37)
  E/AndroidRuntime(  208):    at java.lang.reflect.Method.invokeNative(Native Method)
  E/AndroidRuntime(  208):    at java.lang.reflect.Method.invoke(Method.java:521)
  E/AndroidRuntime(  208):    at android.view.View$1.onClick(View.java:2026)
  E/AndroidRuntime(  208):    ... 21 more
  E/AndroidRuntime(  208): Caused by: java.lang.NullPointerException
  E/AndroidRuntime(  208):    at com.biofuelsfinder.RetailerList.fillData(RetailerList.java:34)
  E/AndroidRuntime(  208):    ... 25 more
  </code></pre>
  
  <p>Thanks</p>