Android系统SVC命令教程

svc命令，位置在/system/bin目录下，用来管理电源控制，无线数据，WIFI

# svc
svc
Available commands:
help     Show information about the subcommands
power    Control the power manager
data     Control mobile data connectivity
wifi     Control the Wi-Fi manager  

# svc power
svc power
Control the power manager
usage: svc power stayon [true|false|usb|ac]
Set the 'keep awake while plugged in' setting.//设置屏幕的常亮，true保持常亮，false不保持，usb当插入usb时常亮，ac当插入电源时常亮  

# svc data
svc data
Control mobile data connectivity
usage: svc data [enable|disable]
Turn mobile data on or off.//设置移动网络的数据是否启用
svc data prefer
Set mobile as the preferred data network//设置移动网络的数据优先于WIFI  

# svc wifi
svc wifi
Control the Wi-Fi manager
usage: svc wifi [enable|disable]
Turn Wi-Fi on or off.//设置WIFI是否启用
svc wifi prefer
Set Wi-Fi as the preferred data network//设置WIFI优先于移动网络的数据，一般应设置成这样，除非你刻意使用移动网络数据传输