今天下午学习adb的一些常见命令，当给模拟器安装apk时，总会弹出如下错误信息：
Failure [INSTALL_FAILED_OLDER_SDK]
rm failed for -f, Read-only file system
在网上搜寻了好多办法，都不管用，最后还是在Stack OverFlow上找到答案：
There was something wrong with AVD or API. I created new configuration with API Level 24 and it helped
我验证了，管用！！