Please see the correct annswer HERE
You have set a break point in one of the classes. Just take off all the break points in your project and run again, their will be no problem.
Eclipse->Window->Show View->(Other->Debug->)Breakpoints
http://stackoverflow.com/questions/5540670/android-eclipse-failing-to-debug
原文：http://www.cnblogs.com/pengxinglove/p/4512040.html