在Android中，要查看客户端Binder的连接数，可以通过dumpsys命令结合service参数来获取相关信息。请按照以下步骤进行操作：
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连接到设备的计算机上，打开命令行终端。
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使用
adb shell命令进入设备的Shell环境。 -
执行以下命令来查看服务的信息：
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dumpsys activity services ``` 该命令将列出设备上所有活动的服务信息，包括服务的名称、PID（进程ID）等。 -
在输出中找到您感兴趣的服务，并查看其详细信息。通常，客户端Binder连接数会在服务的详细信息中列出。
例如，如果要查看名为"com.example.myapp.MyService"的服务的客户端Binder连接数，可以使用以下命令：
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dumpsys activity services | grep "com.example.myapp.MyService"这将过滤输出，只显示包含所查找服务名称的行。
在输出中，您可能会找到类似以下的行：
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Client Bindings: [com.example.client1.IBinderConnection] @ 0x12345678 (pid=123, uid=456) Client Bindings: [com.example.client2.IBinderConnection] @ 0x87654321 (pid=789, uid=987)上述行显示了与服务绑定的客户端Binder连接数，每个连接对应一个客户端。通过计数这些行，您可以确定客户端Binder的连接数。
请注意，对于非系统应用程序，您可能只能查看与自己应用程序相关的服务信息。而对于系统级服务，可能需要具有root权限或系统签名才能查看其详细信息。
dumpsys activity 功能查看
dumpsys activity -h
Activity manager dump options:
[-a] [-c] [-p PACKAGE] [-h] [WHAT] ...
WHAT may be one of:
a[ctivities]: activity stack state
r[recents]: recent activities state
b[roadcasts] [PACKAGE_NAME] [history [-s]]: broadcast state
broadcast-stats [PACKAGE_NAME]: aggregated broadcast statistics
i[ntents] [PACKAGE_NAME]: pending intent state
p[rocesses] [PACKAGE_NAME]: process state
o[om]: out of memory management
perm[issions]: URI permission grant state
prov[iders] [COMP_SPEC ...]: content provider state
provider [COMP_SPEC]: provider client-side state
s[ervices] [COMP_SPEC ...]: service state
allowed-associations: current package association restrictions
as[sociations]: tracked app associations
exit-info [PACKAGE_NAME]: historical process exit information
lmk: stats on low memory killer
lru: raw LRU process list
binder-proxies: stats on binder objects and IPCs
settings: currently applied config settings
service [COMP_SPEC]: service client-side state
package [PACKAGE_NAME]: all state related to given package
all: dump all activities
top: dump the top activity
WHAT may also be a COMP_SPEC to dump activities.
COMP_SPEC may be a component name (com.foo/.myApp),
a partial substring in a component name, a
hex object identifier.
-a: include all available server state.
-c: include client state.
-p: limit output to given package.
--checkin: output checkin format, resetting data.
--C: output checkin format, not resetting data.
--proto: output dump in protocol buffer format.
--dump-dumpable: dump just the DUMPABLE-related state of an activity. Use the --list-dumpables option to list the supported DUMPABLEs
--list-dumpables: show the available dumpables in an activity
exit-info [PACKAGE_NAME] 可以查看应用退出的时间，原因等信息，
binder-proxies 可以来查看应用中binder proxy情况
dumpsys activity 信息量很大，是非常强大的工具，也是学习了解AMS的一个很好的切入点