NoSuchMethodError: String.isEmpty
<blockquote>
  <p><strong>Possible Duplicate:</strong><br>
  <a href="http://stackoverflow.com/questions/4396844/scala-on-android-java-lang-nosuchmethoderror-java-lang-string-isempty">Scala on Android: java.lang.NoSuchMethodError: java.lang.String.isEmpty</a>  </p>
</blockquote>



<p>I've just released a new app on Android</p>

<p>I've optimized and obfuscated the code with proguard and tested extensively on my Anroid 2.3.3 phone. It works all right.</p>

<p>However, I keep getting really strange crash reports in the developer console, such as </p>

<pre><code>java.lang.NoSuchMethodError: java.lang.String.isEmpty
</code></pre>

<p>Isn't <code>String.isEmpty()</code> a framework function on all Android devices?</p>
