如何检查自定义android是否已植根？

Question

We've bought some custom android tablets, that we're going to use as kiosk tablets. For our kiosk app to work properly the app needs root access.

How can I check if the device is rooted properly? And how can I root it if it isn't?

Things that point to that the device IS rooted:

1. When I ADB shell into the tablet the line starts with "#" (I read somewhere that this means that the tablet is rooted).
2. When I run "su" in the shell nothing happens (no errors).
3. This file exist /system/xbin/su"

Things that point to that the device IS NOT rooted:

1. I have installed Root Checker, it says "Sorry! This device does not have root access"

2. When I run the following code in our app, which I know for a fact is working on other rooted devices:

    Process process = Runtime.getRuntime().exec("su"); os = new DataOutputStream(process.getOutputStream()); os.writeBytes(cmd + "\\n");

   I get an error: "java.io.IOException: write failed: EPIPE (Broken pipe)".

Answer 1

Had to try a number of different root tools. Turns out KingRoot ( https://kingroot.net/ ) did the job. Afterwards Root Checker says that it is rooted correctly and my app works again.

Answer 2

There is this nice guide which you can follow to check if the phone is rooted or not.

Link to website

Answer 3

Your post has indicated you have been able to purchase custom rooted android devices.

Can you advise where you were able to source these from, I am needing the same but preferable mobile phone size form factor rather than tablet.

The app I have devices needs to gain access to some of the functionality only available on a rooted android device

Ideally I am looking to commercialise my application and so would need a supplier able to supply commercial quantities of the rooted devices.