Installing Android API 16 causing Problems
<p>I am a very new Android Developer.</p>

<p>I am using API 17 and I want to test an app  with API 16, 
I changed the <code>project.properties</code> <code>target=android-17</code> to <code>target=android-16</code>
Then it appears to have this error: </p>

<pre><code>Unable to resolve target 'android-16'
</code></pre>

<p>What I did was to go to Android SDK Manager to download and install API 16, 
after that, nothing works, 
everything on MainActivity are errors, 
I cannot run any projects nor creating any new project.</p>

<p>Could somebody tell me how to fix it? What did I do wrong?  </p>
