新项目拉取时遇到的问题，安装后启动不了。
java.lang.RuntimeException: Unable to instantiate application application.ReaderApplication: java.lang.ClassNotFoundException: Didn't find class
解决办法：Android studio Ctrl+Alt + S (windows) (mac 快捷键 Command + .)打开设置
Enable Instant Run to hot swap code/resource changes on deploy(default enabled)
取消 勾选 再次运行