Question

I try to access to my folder in sdcard and install myapp.apk, i use this code:

 Runtime.getRuntime().exec("cd sdcard/.yasmin");
 Runtime.getRuntime().exec("adb install tefli.apk");

But unfortunatelly i have this error:

05-11 11:09:57.925: WARN/System.err(1399): java.io.IOException: 
Error running exec(). Commands: [cd, sdcard/.yasmin] Working Directory: null    Environment: null

Anybody please have an idea.
thanks in advance.

Answer 1

I am not sure that this will fix your problem, but AFAIK, each call to exec() creates a new shell. A possible solution is to do the following:

1. Get the process of the exec() using: Process p = Runtime.getRuntime().exec(...).
2. Grab the process inputStream using p.getInputStream();.
3. Run the second command.

also note that you are trying to access the sdcard as you were in root folder and in a hardcoded path, consider the following:

Process p = Runtime.getRuntime().exec("cd /sdcard/.yasmin");

Or even better:

Process p = Runtime.getRuntime().exec("cd " + Environment.getExternalStorageDirectory() + "/.yasmin");

Hope it’ll help!