Dex Loader] Unable to execute Dex:multiple Dex files define lcom/Solution

[2014-06-29 00:37:11-dex Loader] Unable to execute Dex:multiple Dex files define lcom/tongtech/backport/java/util/abstractcollection;

[2014-06-29 00:37:11-tlrtsample] Conversion to Dalvik format failed:unable to execute dex:multiple Dex files define Lcom/tongtech/backport/java/util/abst Ractcollection;

Solution, referring to the http://blog.csdn.net/mxlxiao7/article/details/8978930 method.

Indeed, my jar package has been upgraded, all have a test.jar and Test_old.jar exist, and the jar is automatically referenced, all occurrences of class and other hex content is repeatedly referenced, the Test_old.jar name is changed to Test_ Old.1jar, recompile, OK.

I've only recently used eclipse for andriod development, and I've always felt that the auto build feature is sometimes ineffective and awkward.