adb devices can not connect mumu simulator

solution:

1. If your android adb environment direct access to the relevant instructions mumu just need to open the simulator and then open cmd -.> Enter adb connect 127.0.0.1:7555 can be directly connected to the simulator mumu
2. Combined appium call, refer to the following command.

e:
cd  E:\Program Files (x86)\MuMu\emulator\nemu\EmulatorShell
nox_adb connect 127.0.0.1:7555
cd E:\Program Files (x86)\Android\android-sdk\platform-tools
adb connect 127.0.0.1:7555
adb devices