wm命令详解

usage: wm [subcommand] [options]
       wm size [reset|WxH|WdpxHdp]
       wm density [reset|DENSITY]
       wm overscan [reset|LEFT,TOP,RIGHT,BOTTOM]
       wm scaling [off|auto]
       wm screen-capture [userId] [true|false]

wm size: return or override display size.
         width and height in pixels unless suffixed with 'dp'.

wm density: override display density.

wm overscan: set overscan area for display.

wm scaling: set display scaling mode.

wm screen-capture: enable/disable screen capture.

wm dismiss-keyguard: dismiss the keyguard, prompting the user for auth if necessary.

wm surface-trace: log surface commands to stdout in a binary format.

查看当前的分辨率:

wm size

设置当前输出分辨率：

wm size 1280x1024

永久性的修改（高通平台）：

法一：修改build.prop

adb root //提示read only filysystem时执行此命令获取root权限，
adb remount
adb pull /system/build.prop D:\
//在build.prop末尾添加一行 ro.sf.lcd_density=240 
adb push  D:\build.prop  /system/
adb shell
cd /system/
chmod 644 build.prop    //没有修改权限将导致手机起不来

法二： 修改system.prop

Y:\xxxx\device\qcom\xxxx\system.prop

ro.sf.lcd_density=240 改这个值，然后重新编译system.img