It then warns me RTools is already installed if I proceed with installation. My path is: "C:\Program Files\R\R-3.6.3\bin\x64;C:\Rtools\bin;C:\Rtools\mingw_64\bin;C:\ProgramData\Oracle\Java\javapath;C:\Program Files\Common Files\Microsoft Shared\Windows Live;C:\Program Files (x86...
一 安装 ADB: 下载ADB, 解压得到adb.exe AdbWinApi.dll AdbWinUsbApi.dll 将这三个文件都放到C盘中的Windows/System32/目录下, 保险起见,同时拷贝这三个文件到C盘中的Windows/System/目录下 及Windows/SysWOW64/ 如果不拷贝到System/目录下有可能执行adb时会出错:"找不到AdbWi ...