'adb' is not recognized as an internal or external command,
operable program or batch file.
Starting the app (D:\ProgramFile\Android\androidsdk/platform-tools/adb shell am start -n com.rnapp/com.rnapp.MainActivity...
error: more than one device/emulator
错误原因:
有多个设备或Android模拟器连接;
解决方案:
关闭只剩一个再运行就可以了;