Android Studio 三个错误，归结为一个错误
1. 弹出窗口，错误如下
Application Installation Failed...INSTALL_FAILED_INVALID_APK...
WARNING: Uninstalling will remove the applation data:
Do you want to uninstall the existing applation?
2. Event Log，错误如下
Session 'app': Error Installing APKs
3. Run，错误如下
Unknown failure (Failure - not installed for 0)
Error while Installing APKs
这三个错误可归结为一个，也调试了数小时，各种搜索。终于找到了办法：
在设置中可以解决：File-->Settings
转载于:https://my.oschina.net/AmosWang/blog/858958