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

Question

I am getting following Exception on Android 2.2.1:

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

I am calling text.isEmpty

Answer 1

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

Answer 2

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

Answer 3

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

Answer 4

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.