获取 Android 应用的“root”权限
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Getting 'root" permission for Android App
提问by ik024
I would like to know how can we get root permission from android app? Are there any app out there in android market?
我想知道我们如何从 android 应用程序获得 root 权限？android 市场上有没有应用程序？
I tried out the below line of code to list out files but nothing happened
我尝试了下面的代码行来列出文件，但什么也没发生
Process process = Runtime.getRuntime().exec(new String[] { "su", "-", "root"});
I tried to give TEST_FACTORY permission in my manifest file but I got an error "permitted to system app"
我试图在我的清单文件中授予 TEST_FACTORY 权限，但出现错误“允许系统应用程序”
How can I make my app system app?
如何制作我的应用系统应用？
I want help to get started with these stuff (make app if possible to get root permission) any help on this is very much appreciated. Thanks in advance :)
我需要帮助来开始使用这些东西（如果可能的话，制作应用程序以获得 root 权限）对此的任何帮助都非常感谢。提前致谢 ：）
采纳答案by Johannes H.
First: note that you can only execute shell commands using su (= you can only use shell commands as root, not java code).
首先：请注意，您只能使用 su 执行 shell 命令（=您只能以 root 身份使用 shell 命令，而不能使用 java 代码）。
Second: Not sure if this applies to all su apps out there, but this is the help message of suon my phone:
第二：不确定这是否适用于所有 su 应用程序，但这是su我手机上的帮助消息：
Usage: su [options] [--] [-] [LOGIN] [--] [args...]
Options:
--daemon start the su daemon agent
-c, --command COMMAND pass COMMAND to the invoked shell
-h, --help display this help message and exit
-, -l, --login pretend the shell to be a login shell
-m, -p,
--preserve-environment do not change environment variables
-s, --shell SHELL use SHELL instead of the default /system/bin/sh
-u display the multiuser mode and exit
-v, --version display version number and exit
-V display version code and exit,
this is used almost exclusively by Superuser.apk
This means: you have to run su -c something(or su -c something - root, but rootis the default anyway). essentially this is equal to su on most Linux systems, except the daemon-thing, as there is no daemon ahndling su calls on regular linux systems.
这意味着：您必须运行su -c something（或su -c something - root，但root无论如何都是默认值）。本质上这在大多数 Linux 系统上等于 su，除了守护进程之外，因为在常规 linux 系统上没有守护进程 ahndling su 调用。
If other su commands behave differently (which is possible), it's more secure to open a stream to a shell, execute su, evaluate it's return code, then proceed to execute other commands, finally execute exit.
如果其他 su 命令的行为不同（这是可能的），则将流打开到 shell，执行su，评估它的返回代码，然后继续执行其他命令，最后执行更安全exit。
回答by Nir Hartmann
Theres a good answer here - ANDROID: How to gain root access in an Android application?
这里有一个很好的答案 - ANDROID：如何在 Android 应用程序中获得 root 访问权限？
"As far as I know, you can only run command-line commands using root privileges. You can use this generic class I made that wraps the root access in your code: http://muzikant-android.blogspot.com/2011/02/how-to-get-root-access-and-execute.html"
“据我所知，你只能使用 root 权限运行命令行命令。你可以使用我制作的这个通用类，它在你的代码中包装了 root 访问权限：http: //muzikant-android.blogspot.com/2011/ 02/how-to-get-root-access-and-execute.html"
