Unable to execute dex: Java heap space

參考：

http://stackoverflow.com/questions/5943712/conversion-to-dalvik-format-failed-unable-to-execute-dex-java-heap-space

Modify the -XmsAm and -XmxBm paremeters in eclipse.ini so that they are large enough. The default is -Xms40m-Xmx384m. Try changing them both to -Xms512m-Xmx512m and restart eclipse to see if that helps. If not, continue to increase the values and restart eclipse until either one of two things happens:

1. Your build completes.

2. Eclipse won't restart because you don't have enough memory.

eclipse.ini is located at /etc/eclipse.ini in Ubuntu (assuming you installed Eclipse from the Ubuntu repositories).