如何禁用包过滤器？我一直收到这条消息......
Ignoring unknown package filter 'build-tools-23.0.0_rc2'
Warning: The package filter removed all packages. There is nothing to install.
Please consider trying to update again without a package filter.
嗨,任何人都可以教我如何使用zbar/zxing为qr代码阅读器？我在线尝试了很多示例代码,但似乎都没有.顺便说一句我使用Android工作室.