The project cannot be built until build path errors are resolved

安卓同时以不同API建立工程,(如android2.1和android1.6),eclipse可能为后者报错:The project cannot be built until build path errors are resolved。选中工程-右键-Build Path-Configure Build Path...-Java Build Path-SDK前打勾(如Android1.6)。

另外,多任务运行模式,模拟器会为android2.1程序异常:Activity class{……}does not exist。原因不明,进入死循环(实际循环3次停止),重现,打勾android2.1或重启模拟器临时解决。

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