title: Opening a Calculator in Android
body: <p>I'm looking to open a calculator from within my Activity.  Here's my code right now and it works:</p>
  
  <pre><code>Intent i = new Intent();
  i.setClassName("com.android.calculator2",
  "com.android.calculator2.Calculator");
  </code></pre>
  
  <p>I would like to make this an implicit call because I don't know what calculator the use would like to use and I would like to leave the option open to receive a value from the calculator, which the android one apparently doesn't do.  I haven't been able to find a good example of how to implicitly ask for a type of application.</p>
  
  <p>I've looked at <a href="http://www.openintents.org/en/intentstable" rel="nofollow noreferrer">http://www.openintents.org/en/intentstable</a> but I guess I don't completely understand how to use that site.</p>
  
  <p>I think I understand the intent of intents, but maybe I just don't have a firm grasp on how to use them.</p>