在android软件开发中，增加日志的作用很重要，便于我们了解程序的执行情况和数据。eclipse开发工具会提供了可视化的工具，但是还是感觉终端效率会高一些，于是自己写了一个python的脚本来通过包名来过滤某一程序的日志。
原理
通过包名得到对应的进程id（可能多个），然后使用adb logcat 过滤进程id即可得到对应程序的日志。
源码
代码如下:
#!/usr/bin/env python
#coding:utf-8
#this script is aimed to grep logs by application(user should input a packagename and then we look up for the process ids then separate logs by process ids).
import os
import sys
packagename=str(sys.argv[1])
command = adb shell ps | grep %s | awk '{print $2}'%(packagename)
p = os.popen(command)
##for some applications,there are multiple processes,so we should get all the process id
pid = p.readline().strip()
filters = pid
while(pid != ):
    pid = p.readline().strip()
    if (pid != ''):
        filters = filters +  | + pid
        #print 'command = %s;filters=%s'%(command, filters)
if (filters != '') :
    cmd = 'adb logcat | grep --color=always -e %s '%(filters)
    os.system(cmd)
使用方法
代码如下:
python logcatpkg.py com.mx.browser
最新代码
代码如下:
#!/usr/bin/env python
#coding:utf-8
#this script is aimed to grep logs by application(user should input a packagename and then we look up for the process ids then separate logs by process ids).
import os
import sys
packagename=str(sys.argv[1])
command = adb shell ps | grep %s | awk '{print $2}'%(packagename)
p = os.popen(command)
##for some applications,there are multiple processes,so we should get all the process id
pid = p.readline().strip()
filters = pid
while(pid != ):
    pid = p.readline().strip()
    if (pid != ''):
        filters = filters +  | + pid
        #print 'command = %s;filters=%s'%(command, filters)
if (filters != '') :
    cmd = 'adb logcat | grep --color=always -e %s '%(filters)
    os.system(cmd)
不足
当脚本执行后，android程序如果关闭或者重新启动，导致进程id变化，无法自动继续输出日志，只能再次执行此脚本。