用命令打开android应用

在开发android应用过程中，往往需要做一些压力测试，这通常需要写一些脚本来完成，这样我们就不需要时时刻刻的操作手机。因此往往需要用命令打开我们的应用。

使用的命令是　

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adb shell am

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使用此命令可以从cmd控制台启动 activity, services；发送 broadcast 等等。

下面是其详细的参数解释：

vincent@vincent:~/work/imx214$ adb shell am
usage: am [subcommand] [options]
usage: am start [-D] [-W] [-P <FILE>] [--start-profiler <FILE>]
[--R COUNT] [-S] [--opengl-trace]
[--user <USER_ID> | current] <INTENT>
am startservice [--user <USER_ID> | current] <INTENT>
am stopservice [--user <USER_ID> | current] <INTENT>
am force-stop [--user <USER_ID> | all | current] <PACKAGE>
am kill [--user <USER_ID> | all | current] <PACKAGE>
am kill-all
am broadcast [--user <USER_ID> | all | current] <INTENT>
am instrument [-r] [-e <NAME> <VALUE>] [-p <FILE>] [-w]
[--user <USER_ID> | current]
[--no-window-animation] <COMPONENT>
am profile start [--user <USER_ID> current] <PROCESS> <FILE>
am profile stop [--user <USER_ID> current] [<PROCESS>]
am dumpheap [--user <USER_ID> current] [-n] <PROCESS> <FILE>
am set-debug-app [-w] [--persistent] <PACKAGE>
am clear-debug-app
am monitor [--gdb <port>]
am hang [--allow-restart]
am restart
am idle-maintenance
am screen-compat [on|off] <PACKAGE>
am to-uri [INTENT]
am to-intent-uri [INTENT]
am switch-user <USER_ID>
am stop-user <USER_ID>
am stack create <TASK_ID> <RELATIVE_STACK_BOX_ID> <POSITION> <WEIGHT>
am stack movetask <TASK_ID> <STACK_ID> [true|false]
am stack resize <STACK_ID> <WEIGHT>
am stack boxes
am stack box <STACK_BOX_ID>

am start: start an Activity.  Options are:
-D: enable debugging
-W: wait for launch to complete
--start-profiler <FILE>: start profiler and send results to <FILE>
-P <FILE>: like above, but profiling stops when app goes idle
-R: repeat the activity launch <COUNT> times.  Prior to each repeat,
the top activity will be finished.
-S: force stop the target app before starting the activity
--opengl-trace: enable tracing of OpenGL functions
--user <USER_ID> | current: Specify which user to run as; if not
specified then run as the current user.

am startservice: start a Service.  Options are:
--user <USER_ID> | current: Specify which user to run as; if not
specified then run as the current user.

am stopservice: stop a Service.  Options are:
--user <USER_ID> | current: Specify which user to run as; if not
specified then run as the current user.

am force-stop: force stop everything associated with <PACKAGE>.
--user <USER_ID> | all | current: Specify user to force stop;
all users if not specified.

am kill: Kill all processes associated with <PACKAGE>.  Only kills.
processes that are safe to kill -- that is, will not impact the user
experience.
--user <USER_ID> | all | current: Specify user whose processes to kill;
all users if not specified.

am kill-all: Kill all background processes.

am broadcast: send a broadcast Intent.  Options are:
--user <USER_ID> | all | current: Specify which user to send to; if not
specified then send to all users.
--receiver-permission <PERMISSION>: Require receiver to hold permission.

am instrument: start an Instrumentation.  Typically this target <COMPONENT>
is the form <TEST_PACKAGE>/<RUNNER_CLASS>.  Options are:
-r: print raw results (otherwise decode REPORT_KEY_STREAMRESULT).  Use with
[-e perf true] to generate raw output for performance measurements.
-e <NAME> <VALUE>: set argument <NAME> to <VALUE>.  For test runners a
common form is [-e <testrunner_flag> <value>[,<value>...]].
-p <FILE>: write profiling data to <FILE>
-w: wait for instrumentation to finish before returning.  Required for
test runners.
--user <USER_ID> | current: Specify user instrumentation runs in;
current user if not specified.
--no-window-animation: turn off window animations while running.

am profile: start and stop profiler on a process.  The given <PROCESS> argument
may be either a process name or pid.  Options are:
--user <USER_ID> | current: When supplying a process name,
specify user of process to profile; uses current user if not specified.

am dumpheap: dump the heap of a process.  The given <PROCESS> argument may
be either a process name or pid.  Options are:
-n: dump native heap instead of managed heap
--user <USER_ID> | current: When supplying a process name,
specify user of process to dump; uses current user if not specified.

am set-debug-app: set application <PACKAGE> to debug.  Options are:
-w: wait for debugger when application starts
--persistent: retain this value

am clear-debug-app: clear the previously set-debug-app.

am bug-report: request bug report generation; will launch UI
when done to select where it should be delivered.

am monitor: start monitoring for crashes or ANRs.
--gdb: start gdbserv on the given port at crash/ANR

am hang: hang the system.
--allow-restart: allow watchdog to perform normal system restart

am restart: restart the user-space system.

am idle-maintenance: perform idle maintenance now.

am screen-compat: control screen compatibility mode of <PACKAGE>.

am to-uri: print the given Intent specification as a URI.

am to-intent-uri: print the given Intent specification as an intent: URI.

am switch-user: switch to put USER_ID in the foreground, starting
execution of that user if it is currently stopped.

am stop-user: stop execution of USER_ID, not allowing it to run any
code until a later explicit switch to it.

am stack create: create a new stack relative to an existing one.
<TASK_ID>: the task to populate the new stack with. Must exist.
<RELATIVE_STACK_BOX_ID>: existing stack box's id.
<POSITION>: 0: before <RELATIVE_STACK_BOX_ID>, per RTL/LTR configuration,
1: after <RELATIVE_STACK_BOX_ID>, per RTL/LTR configuration,
2: to left of <RELATIVE_STACK_BOX_ID>,
3: to right of <RELATIVE_STACK_BOX_ID>,               4: above <RELATIVE_STACK_BOX_ID>, 5: below <RELATIVE_STACK_BOX_ID>
<WEIGHT>: float between 0.2 and 0.8 inclusive.

am stack movetask: move <TASK_ID> from its current stack to the top (true) or   bottom (false) of <STACK_ID>.

am stack resize: change <STACK_ID> relative size to new <WEIGHT>.

am stack boxes: list the hierarchy of stack boxes and their contents.

am stack box: list the hierarchy of stack boxes rooted at <STACK_BOX_ID>.

<INTENT> specifications include these flags and arguments:
[-a <ACTION>] [-d <DATA_URI>] [-t <MIME_TYPE>]
[-c <CATEGORY> [-c <CATEGORY>] ...]
[-e|--es <EXTRA_KEY> <EXTRA_STRING_VALUE> ...]
[--esn <EXTRA_KEY> ...]
[--ez <EXTRA_KEY> <EXTRA_BOOLEAN_VALUE> ...]
[--ei <EXTRA_KEY> <EXTRA_INT_VALUE> ...]
[--el <EXTRA_KEY> <EXTRA_LONG_VALUE> ...]
[--ef <EXTRA_KEY> <EXTRA_FLOAT_VALUE> ...]
[--eu <EXTRA_KEY> <EXTRA_URI_VALUE> ...]
[--ecn <EXTRA_KEY> <EXTRA_COMPONENT_NAME_VALUE>]
[--eia <EXTRA_KEY> <EXTRA_INT_VALUE>[,<EXTRA_INT_VALUE...]]
[--ela <EXTRA_KEY> <EXTRA_LONG_VALUE>[,<EXTRA_LONG_VALUE...]]
[--efa <EXTRA_KEY> <EXTRA_FLOAT_VALUE>[,<EXTRA_FLOAT_VALUE...]]
[-n <COMPONENT>] [-f <FLAGS>]
[--grant-read-uri-permission] [--grant-write-uri-permission]
[--debug-log-resolution] [--exclude-stopped-packages]
[--include-stopped-packages]
[--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] [--activity-clear-task]
[--activity-task-on-home]
[--receiver-registered-only] [--receiver-replace-pending]
[--selector]
[<URI> | <PACKAGE> | <COMPONENT>]

其操作实例如下：

adb shell am start -n 包名/包名＋类名（-n 类名,-a action,-d date,-m MIME-TYPE,-c category,-e 扩展数据,

但是我们如何才能知道其包名跟类名呢？

可以通过下面的办法：

adb logcat | grep ActivityManager

在本实例中我打开的camera应用，因此可以看到下面的log信息：

I/ActivityManager( 1097): START u0 {act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER]
flg=0x10200000 cmp=<span style="color:#FF0000;">com.android.camera2/com.android.camera.CameraActivity</span> bnds=[212,1776][340,1904]} from pid 1395

上面标红的即为其包名和类名：

vincent@vincent:~$　adb shell am start -W -n com.android.camera2/com.android.camera.CameraActivity
Starting: Intent { cmp=com.android.camera2/com.android.camera.CameraActivity }
Status: ok
Activity: com.android.camera2/com.android.camera.CameraActivity
ThisTime: 505
TotalTime: 505
Complete