blocks|key|489640|text|这是我今天用来解决这个问题的一个丑陋的一行技巧。假设程序有一些已知的名称，只要进程出现，就尝试附加到它。在本例中，我对所有要打开的调用都感兴趣。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|489641|while+true;+do
++while+!+ps++%7C+grep+-q+-i+MyProgram;+do+:;+done;
++ps+%7C+grep+-i+MyProgram+%7C+while+read+a+b+c;+do
+++strace+-e+open+-f+-p+$b;
++done;
done|code-block|syntax|javascript|489642|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

This is an ugly one-liner hack I used today to solve this issue. Assuming the program has some known name, just try attaching to the process as soon as it appears. In this example, I'm interested in all calls to open.

<pre><code>while true; do
 while ! ps | grep -q -i MyProgram; do :; done;
 ps | grep -i MyProgram | while read a b c; do
 strace -e open -f -p $b;
 done;
done
</code></pre>

blocks|key|272590|text|这是一个一行代码，在am启动应用程序后，grabs+the+process+id并通过管道将其发送到strace。您不会执行最初的几条指令，但它足够早地满足我的需要。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|272591|am+start+-n+com.packagename.here\.ActivityName+&&+set+`ps+%7C+grep+com.packagename.here`+&&+strace+-p+$2|272592|entityMap|0|LINK|mutability|MUTABLE|url|https://stackoverflow.com/a/21320328^0|A|2|K|K|0|0|0|2U|0^^$0|@$1|2|3|4|5|6|7|P|8|@$9|Q|A|R|B|C]]|D|@$9|S|A|T|1|U]]|E|$]]|$1|F|3|G|5|6|7|V|8|@$9|W|A|X|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|Y|8|@]|D|@]|E|$]]]|I|$J|$5|K|L|M|E|$N|O]]]]

Here's a one-liner that <a href="https://stackoverflow.com/a/21320328">grabs the process id</a> and pipes it to strace right after <code>am</code> launches the app. You won't get the first few instructions executed, but it kicks in early enough for my needs.

<code>am start -n com.packagename.here\.ActivityName &amp;&amp; set `ps | grep com.packagename.here` &amp;&amp; strace -p $2
</code>

blocks|key|489760|text|Android应用程序实际上是通过f+zygote进程启动的，所以您可以通过跟踪zygote进程和以下子进程(‘-f’)来跟踪应用程序初始化：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|489761|setenforce+0++#+In+Android+4.3+and+later,+if+SELinux+is+enabled,+strace+will+fail+with+"strace:+wait:+Permission+denied"

set+`ps+%7C+grep+zygote`+;+strace+-p+$2+-f+-tt+-T+-s+500+-o+/sdcard/strace.txt|code-block|syntax|javascript|489762|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Android apps are actually started by forking the zygote process, so you can trace app initialization by tracing the zygote process and following child processes ('-f'):

<pre><code>setenforce 0 # In Android 4.3 and later, if SELinux is enabled, strace will fail with "strace: wait: Permission denied"

set `ps | grep zygote` ; strace -p $2 -f -tt -T -s 500 -o /sdcard/strace.txt
</code></pre>

blocks|key|489834|text|如果你有根用户访问权限，或者设备运行时没有启用SELinux，那么你可以从安卓网站上进行操作：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|489835|设置设备，以便可以运行strace。您需要成为根用户，禁用SELinux，然后重新启动运行时以删除seccomp过滤器，否则将阻止strace运行:+adb+root+adb+shell+setenforce+0+adb+shell+stop+adb+shell+start|489836|为strace日志设置一个全局可写的目录，因为strace将在应用程序的uid下运行:+adb+shell+mkdir+-m+777+/data/local/tmp/strace|489837|选择要跟踪并启动的进程:+adb+shell+setprop+/data/local/tmp/strace/strace.com.android.calendar.txt"‘'"logwrapper+strace+-f+-o|489838|正常启动进程。|489839|https://source.android.com/devices/tech/debug/strace#app-strace|offset|length|489840|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|0|0|0|0|1R|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|X|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Y|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|Z|8|@]|9|@$L|10|M|11|1|12]]|A|$]]|$1|N|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|K]]]]

If you have root access or the device is running without SELinux enabled, then you can follow the way from Android site:

Set up the device so that you can run strace. You need to be root, disable SELinux, and restart the runtime to remove the seccomp filter that will otherwise prevent strace from running:
adb root
adb shell setenforce 0
adb shell stop
adb shell start

Set up a world-writable directory for strace logs, because strace will be running under the app's uid:
adb shell mkdir -m 777 /data/local/tmp/strace

Choose the process to trace and launch it:
adb shell setprop wrap.com.android.calendar '"logwrapper strace -f -o /data/local/tmp/strace/strace.com.android.calendar.txt"'

Launch the process normally.

<a href="https://source.android.com/devices/tech/debug/strace#app-strace" rel="nofollow noreferrer">https://source.android.com/devices/tech/debug/strace#app-strace</a>

I need help on stracing Android apps in the SDK emulator.

Here is my setup:

I have an Android SDK emulator running the Android API 4.03 ADB shell connected to emulator.

I am able to install an APK using the ADB install filename.apk

I am able to run the app using the ADB shell <code>am start -a android.intent.action.Main -n com.akproduction.notepad/com.akproduction.notepad.NoteList</code>

I try to strace using (ADB shell) <code>strace am start -a android.intent.action.Main -n com.akproduction.notepad/com.akproduction.notepad.NoteList</code> but I get nothing!

How do you trace the runtime behavior of Android apps and their installation?

(P.S. The test app is located <a href="http://www.appbrain.com/app/ak-notepad/com.akproduction.notepad">here</a>.

Android: How to strace an app using ADB shell am start

Android

我需要在SDK模拟器中使用Android应用程序的帮助。下面是我的设置：我有一个Android SDK模拟器运行的Android API4.03ADB shell连接到模拟器。我可以使用ADB install filename.apk安装APK。我可以使用ADB shell am start -a android.in...

问Android:如何使用ADB shell启动应用程序
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