title: Loader doesn't start after calling initLoader()?
body: <p>I have a fragment, and want to start a loader when a button is clicked:</p>
  
  <pre><code>public class MyFragment extends Fragment {
  
      public void onActivityCreated() {
          super.onActivityCreated();
  
          Button btn = ...;
          btn.setOnClickListener(new OnClickListener() {
              public void onClick(View view) {
                  getLoaderManager().initLoader(500, null, mMyCallback);
              }
          });
      }  
  
      private LoaderManager.LoaderCallbacks&lt;String&gt; mMyCallback = new  LoaderManager.LoaderCallbacks&lt;String&gt;() {
  
          @Override
          public Loader&lt;String&gt; onCreateLoader(int arg0, Bundle arg1) {
              Log.e(TAG, "LoaderCallback.onCreateLoader().");
              return new MyLoader(getActivity());
          }
      }
  }
  
  public class MyLoader extends AsyncTaskLoader&lt;String&gt; {
      public MyLoader(Context context) {
          super(context);
      }
  
      @Override
      public String loadInBackground() {
          Log.e(TAG, "Hi, running.");
          return "terrific.";
      }
  }
  </code></pre>
  
  <p>After clicking the button, I can see my callback's onCreateLoader method called, but the created loader never actually starts. Do we need to call forceLoad() on the loader itself to get it to actually start? None of the sample posts do this,</p>
  
  <p>Thanks</p>