Basic usage of ADB logcat

To get started with Android, at least you need to know the ADB, so playing log is also essential.

The following is a brief introduction to the ADB logcat basic usage:

usage:logcat [Options] [Filterspecs]
Options include:
-S Set default filter to silent.
Like specifying Filterspec ' *:s '
-F <filename> Log to file. Default to stdout
-R [<kbytes>] Rotate log every kbytes. (if unspecified). Requires-f
-N <count> sets max number of rotated logs to <count>, default 4
-V <format> sets the log print format, where <format> is one of:

Brief process Tag thread raw time ThreadTime long

-C Clear (flush) the entire log and exit
-D Dump the log and then exit (Don ' t block)
-T <count> print only the most recent <count> lines (implies-d)
-G get the size of the log ' s ring buffer and exit
-B <buffer> Request alternate ring buffer, ' main ', ' System ', ' radio '
or ' events '. Multiple-b parameters is allowed and the
Results is interleaved. The default Is-b main-b system.
-B Output the log in binary
Filterspecs is a series of
<tag>[:p Riority]

Where <tag> is a log component tag (or * for all) and the IS:
V Verbose
D Debug
I Info
W Warn
E Error
F Fatal
S Silent (supress all output)

' * ' means ' *:d ' and <tag> by itself means <tag>:v

If not specified on the commandline, Filterspec are set from Android_log_tags.
If no filterspec is found, filter defaults to ' *:i '

If not specified WITH-V, format was set from Android_printf_log
or defaults to "brief"

Example: adb logcat-v time-s videocamera

This means that the time in the log message will be printed, along with all logs containing the keyword "Videocamera"

C:\USERS\ADMINISTRATOR&GT;ADB logcat-v time-s Videocamera Fulin
---------beginning Of/dev/log/system
---------beginning Of/dev/log/main
07-01 08:43:57.037 V/videocamera (2329): Videocamera oncreate!
07-01 08:43:57.039 I/videocamera (2329): Getexternalsdstate (): Removed
07-01 08:43:57.040 I/videocamera (2329): Getexternalstate (): Mounted
07-01 08:43:57.040 I/videocamera (2329): SDcard is exists? False
07-01 08:43:57.157 V/videocamera (2329): Fulin onCreate storage.getavailablespace (1335459840)
07-01 08:43:57.159 V/videocamera (2329): Fulin Initthumbnailbutton
07-01 08:43:57.170 D/videocamera (2329): Thumbnail.getlastthumbnail >>>
07-01 08:43:57.204 E/videocamera (2329):--------------readvideopreferences---------------minutes = 600
07-01 08:43:57.205 E/videocamera (2329):--------------readvideopreferences----------quality6=10
07-01 08:43:57.207 E/videocamera (2329):-----------------readvideopreferences---------mcameraid=0
07-01 08:43:57.208 E/videocamera (2329):-----------------readvideopreferences---------quality7=10
07-01 08:43:57.209 V/videocamera (2329): mdesiredpreviewwidth=640. mdesiredpreviewheight=480
07-01 08:43:57.234 V/videocamera (2329): Startpreview
07-01 08:43:57.240 V/videocamera (2329): Videocamera--mparameters.setfocusmode (Mfocusmanager.getfocusmode ())
07-01 08:43:57.265 D/videocamera (2329): Thumbnail.getlastthumbnail <<< is Null:false
07-01 08:43:57.269 V/videocamera (2329): Video snapshot size is 3264x2448
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:176x144
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:320x240
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:352x288
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:480x368
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:640x480
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:720x480
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:800x600
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:864x480
07-01 08:43:57.376 D/videocamera (2329): supportedpreviewsizes:1280x720
07-01 08:43:57.422 V/videocamera (2329): Updatesceneonscreenindicator isVisible Falsemsceneindicator[email protected]

Transferred from: http://blog.csdn.net/fulinwsuafcie/article/details/8028572

Basic usage of ADB logcat