调用 /system/bin/am.

用法：

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

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]
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