title: My object is not null but I'm getting a NULL POINTER EXCEPTION
body: <p>For some reason I am getting a null pointer exception pointing to <strong>videosFound</strong> when it is indeed not null. Even the parameter, <strong>adapter</strong>, that is being passed in is not null. I check and verify this simply by printing out if its null or not (both of them are NOT null). So can someone please tell me how I am getting this error?</p>
  
  <pre><code>private ListView videosFound; 
  
  protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_search);
  
          searchInput = (EditText)findViewById(R.id.search_input);
          videosFound = (ListView)findViewById(R.id.videos_found);
  
          handler = new Handler();
  
          addClickListener();
  
          searchInput.setOnEditorActionListener(new TextView.OnEditorActionListener() {
              @Override
              public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
  
                  if (actionId == EditorInfo.IME_ACTION_DONE) {
                      searchOnYoutube(v.getText().toString());
                      return false;
                  }
                  return true;
              }
          });
      }
  
     private void updateVideosFound(){
          ArrayAdapter&lt;VideoItem&gt; adapter = new ArrayAdapter&lt;VideoItem&gt;(getApplicationContext(), R.layout.video_item, searchResults){
              @Override
              public View getView(int position, View convertView, ViewGroup parent) {
                  if(convertView == null){
                      convertView = getLayoutInflater().inflate(R.layout.video_item, parent, false);
                  }
                  ImageView thumbnail = (ImageView)convertView.findViewById(R.id.video_thumbnail);
                  TextView title = (TextView)convertView.findViewById(R.id.video_title);
                  TextView description = (TextView)convertView.findViewById(R.id.video_description);
  
                  VideoItem searchResult = searchResults.get(position);
  
                  Picasso.with(getApplicationContext()).load(searchResult.getThumbnailURL()).into(thumbnail);
                  title.setText(searchResult.getTitle());
                  description.setText(searchResult.getDescription());
                  return convertView;
              }
          };
          if(videosFound == null){
              System.out.println("videoFound is null***********");
          }else{
              System.out.println("videoFound is NOT null***********");
          }
  
          if(adapter == null){
              System.out.println("adapter is null***********");
          }else{
              System.out.println("adapter is NOT null***********");
          }
          videosFound.setAdapter(adapter);//ERROR HERE. neither videosFound no adapter are null
      }
  
  private void addClickListener(){
          videosFound.setOnItemClickListener(new AdapterView.OnItemClickListener() {
  
              @Override
              public void onItemClick(AdapterView&lt;?&gt; av, View v, int pos,
                                      long id) {
                  Intent intent = new Intent(getApplicationContext(), PlayerActivity.class);
                  intent.putExtra("VIDEO_ID", searchResults.get(pos).getId());
                  startActivity(intent);
              }
          });
      }
  </code></pre>
  
  <p>XML</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:orientation="vertical" &gt;
  
      &lt;EditText
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:hint="@string/search"
          android:id="@+id/search_input"
          android:singleLine="true" /&gt;
  
      &lt;ListView
          android:id="@+id/videos_found"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          android:dividerHeight="5dp" /&gt;
  
  &lt;/LinearLayout&gt;
  </code></pre>
  
  <p>Console:</p>
  
  <pre><code>03-24 18:04:31.833 17014-17440/com.example.shawn.myyoutube D/YC: Could not search: com.google.api.client.googleapis.json.GoogleJsonResponseException: 403 Forbidden
                                                                   {
                                                                     "code" : 403,
                                                                     "errors" : [ {
                                                                       "domain" : "usageLimits",
                                                                       "message" : "There is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your API key configuration if request from this IP or referer should be allowed.",
                                                                       "reason" : "ipRefererBlocked",
                                                                       "extendedHelp" : "https://console.developers.google.com"
                                                                     } ],
                                                                     "message" : "There is a per-IP or per-Referer restriction configured on your API key and the request does not match these restrictions. Please use the Google Developers Console to update your API key configuration if request from this IP or referer should be allowed."
                                                                   }
  03-24 18:04:31.833 17014-17014/com.example.shawn.myyoutube I/System.out: videoFound is NOT null***********
  03-24 18:04:31.833 17014-17014/com.example.shawn.myyoutube I/System.out: adapter is NOT null***********
  03-24 18:04:31.843 17014-17014/com.example.shawn.myyoutube D/AndroidRuntime: Shutting down VM
  03-24 18:04:31.843 17014-17014/com.example.shawn.myyoutube E/AndroidRuntime: FATAL EXCEPTION: main
                                                                               Process: com.example.shawn.myyoutube, PID: 17014
                                                                               java.lang.NullPointerException: Attempt to invoke interface method 'int java.util.List.size()' on a null object reference
                                                                                   at android.widget.ArrayAdapter.getCount(ArrayAdapter.java:330)
                                                                                   at android.widget.ListView.setAdapter(ListView.java:502)
                                                                                   at com.example.shawn.myyoutube.SearchActivity.updateVideosFound(SearchActivity.java:98)
                                                                                   at com.example.shawn.myyoutube.SearchActivity.access$200(SearchActivity.java:23)
                                                                                   at com.example.shawn.myyoutube.SearchActivity$2$1.run(SearchActivity.java:61)
                                                                                   at android.os.Handler.handleCallback(Handler.java:739)
                                                                                   at android.os.Handler.dispatchMessage(Handler.java:95)
                                                                                   at android.os.Looper.loop(Looper.java:145)
                                                                                   at android.app.ActivityThread.main(ActivityThread.java:5951)
                                                                                   at java.lang.reflect.Method.invoke(Native Method)
                                                                                   at java.lang.reflect.Method.invoke(Method.java:372)
                                                                                   at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
                                                                                   at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
  </code></pre>