How to write adb shell commend in java.lang.Runtime.getRuntime()?

Question

I need to use adb connect pc to device and do some checking. So I try to use java.lang.Runtime.getRuntime().exec(cmd) to get adb shell result into my program. But I don't know how to write the adb shell commend in the exec call, something like:

String cmd =adkHome + "adb.exe -s " + device + " shell ls";

then cd data/app

How do I do this?

What are you expecting to happen after cd ? Do you mean 'shell ls /data/app'? — Diego Torres Milano
– Diego Torres Milano, Commented Oct 16, 2011 at 3:22

Isaac Parker · Accepted Answer · 2011-11-20 05:59:28Z

1

This may be what you're looking for?

    
    String cmd = "adb shell ls";
    String cmdreturn = "";
    Runtime run = Runtime.getRuntime();
    Process pr = run.exec(cmd);
    pr.waitFor();
    BufferedReader buf = new BufferedReader(new InputStreamReader(pr.getInputStream()));
    while ((line=buf.readLine())!=null) {
         System.out.println(cmdreturn);
    }

As far as preforming actions in a shell, I would recommend writing a shell script that you execute. In this case instead of

    
    String cmd = "adb shell ls";

Replace it with

    
    String cmd = "shellscript.sh";

Cheers!

edited Nov 20, 2011 at 5:59

answered Nov 20, 2011 at 5:33

Isaac Parker

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1 Comment

Mushahid Gillani Over a year ago

adb is a client and it runs in a host . if you try to execute adb in a android shell it will produce an error.

brianestey · Accepted Answer · 2011-10-16 13:08:07Z

0

If you mean to run this on the phone from your java app, you just need:

String cmd = "ls";

answered Oct 16, 2011 at 13:08

brianestey

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2 Comments

susantjs Over a year ago

I means I have a java program run in pc which will triger the adb commend. like the cmd =adkHome + "adb.exe -s " + device + " shell". Then I need to follow up by another commends which try to run in the shell adb opened. like "ls" and "cd "...

brianestey Over a year ago

Ok - I don't think you can do what you want then. As far as I understand it, each adb.exe command starts a new shell so even if you 'cd data/app' in one shell, it won't preserve that for the next. If you are just trying to ls a specific directory, you could do as @dtmilano suggested and issue a fuller command 'ls /data/app'.

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