Scala on Android: java.lang.NoSuchMethodError: java.lang.String.isEmpty

I am getting following Exception 开发者_如何学Con Android 2.2.1:

java.lang.NoSuchMethodError: java.lang.String.isEmpty

I am calling text.isEmpty from Scala. Any idea, how to solve this?

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java.lang.String.isEmpty() was added in Gingerbread (2.3). You will have to write your own replacement function...

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Use JRE/JDK 1.5, which did not have an isEmpty method on String. This will avoid situations where Scala uses 1.6's isEmpty instead of its own. If you have Java libraries as well, be sure to pick ones compatible with 1.5.

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Alternativly use (text.length()>0) ?

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Use TextUtils.isEmpty() instead, available since API level 1.