com.android.builder.testing.api.DeviceException: com.android.ddmlib.InstallException: INSTALL_FAILED_UPDATE_INCOMPATIBLE: Package com.XXX signatures do not match previously installed version; ignoring!
原因：安卓真机上安装了正式版本，删除后重新启动项目即可
原文：https://www.cnblogs.com/lude1994/p/12458285.html