回汇编时出现：
F:\apktool>apktool b Hello
Exception in thread “main” :
otExist:
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
at (Unknown Source)
Caused by: :
at (Unknown Source)
… 5 more
经验证是，反汇编时没有生成
进行反汇编时，改用命令apktool d -r xx便可以解决(加上了-r选项)