Android控制台命令am简介

Android在shell中提供了 am 命令来发送Intent,它的源码为位于 frameworks/base/cmds/am.

它本身是用JAVA代码来实现的。

执行 am 命令其实是通过运行shell脚本 frameworks/base/cmds/am/am，然后在该脚本中运行 app_process 命令来启动am这个java程序的。

frameworks/base/cmds/am/am脚本文件如下：

# Script to start "am" on the device, which has a very rudimentary

# shell.

#

base=/system

export CLASSPATH=$base/framework/am.jar

exec app_process $base/bin com.android.commands.am.Am "$@"

am命令语法如下

usage:  am [subcommand] [options]

    start an Activity: am start [-D] [-W]

        -D: enable debugging

        -W: wait for launch to complete

    start a Service: am startservice

    send a broadcast Intent: am broadcast

    start an Instrumentation: am instrument [flags]

        -r: print raw results (otherwise decode REPORT_KEY_STREAMRESULT)

        -e : set argument to

        -p : write profiling data to

        -w: wait for instrumentation to finish before returning

    start profiling: am profile start

    stop profiling: am profile stop

    start monitoring: am monitor [--gdb ]

        --gdb: start gdbserv on the given port at crash/ANR

    specifications include these flags:

        [-a ] [-d ] [-t ]

        [-c [-c ] ...]

        [-e|--es ...]

        [--esn ...]

        [--ez ...]

        [-e|--ei ...]

        [-n ] [-f ]

        [--grant-read-uri-permission] [--grant-write-uri-permission]

        [--debug-log-resolution]

        [--activity-brought-to-front] [--activity-clear-top]

        [--activity-clear-when-task-reset] [--activity-exclude-from-recents]

        [--activity-launched-from-history] [--activity-multiple-task]

        [--activity-no-animation] [--activity-no-history]

        [--activity-no-user-action] [--activity-previous-is-top]

        [--activity-reorder-to-front] [--activity-reset-task-if-needed]

        [--activity-single-top]

        [--receiver-registered-only] [--receiver-replace-pending]

        []

结束