今天想在模拟器上测试以下接听电话相关的功能，通过telnet连接模拟器成功后，输入命令时却出现错误

$ telnet localhost 5554Trying 127.0.0.1...Connected to localhost.Escape character is '^]'.Android Console: Authentication requiredAndroid Console: type 'auth 
    
     ' to authenticateAndroid Console: you can find your 
     
       in '/home/username/.emulator_console_auth_token'OKgsm call 111111KO: unknown command, try 'help'
     
    

然后按照提示输入help：

helpAndroid console command help:    help|h|?         print a list of commands    avd              control virtual device execution    auth             user authentication for the emulator console    quit|exit        quit control session

真是不看不知道，一看吓一跳，居然就剩这么几个可用命令了。

再回头看最开始的错误信息，发现原来是"auth"在作怪，查看其说明，需要输入"auth_token"才能解锁其它命令。

help authuse 'auth 
    
     ' to get extended console functionality
    

根据提示，auth_token是存储在/home/username/.emulator_console_auth_token中。

接下来执行： 'auth <auth_token>'

然后再来看看help命令：

helpAndroid console command help:    help|h|?         print a list of commands    event            simulate hardware events    geo              Geo-location commands    gsm              GSM related commands    cdma             CDMA related commands    crash            crash the emulator instance    kill             kill the emulator instance    network          manage network settings    power            power related commands    quit|exit        quit control session    redir            manage port redirections    sms              SMS related commands    avd              control virtual device execution    qemu             QEMU-specific commands    sensor           manage emulator sensors    finger           manage emulator finger printtry 'help ' for command-specific help

我们需要的命令又回来了。

然后就可以通过"gsm call 123456789"给模拟器打电话了。