Android requires compiler compliance level 5.0 or 6.0. Found '1.7' instead. Please use Android Tools > Fix Project Properties.
解决方法：
1.项目右键 ->android tools->Fix Project
2.如果不可以，检查Project->Properties->Java Compiler
确认JDK compliance被设置为1.6,并且enable specific seetings.
经过这两步问题基本解决。