Categories
adb android screenshot shell

Error while executing adb command programmatically

I am trying to execute adb commands programmatically

Here is my code:

File f = new File(Environment.getExternalStorageDirectory(), "screen" + System.currentTimeMillis() + ".png");
new ExecuteCommand(MainActivity.this).execute("adb shell screencap -p "
+ Environment.getExternalStorageDirectory().getPath() +
"/" + "screen" + System.currentTimeMillis() + ".png");

ExecuteCommand Class:

public class ExecuteCommand extends AsyncTask<String, String, String> {
Context mContext=null;
public ExecuteCommand(Context _ctx)
{
mContext =_ctx;
}
ProgressDialog progressdailog;
@Override
protected void onPreExecute() {
super.onPreExecute();
progressdailog = ProgressDialog.show(mContext,
"Executing", "Please Wait");
}
@Override
protected String doInBackground(String... params) {
Process p;
StringBuffer output = new StringBuffer();
try {
p = Runtime.getRuntime().exec(params[0]);
BufferedReader reader = new BufferedReader(
new InputStreamReader(p.getInputStream()));
String line = "";
while ((line = reader.readLine()) != null) {
output.append(line + "\n");
p.waitFor();
}
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
e.printStackTrace();
}
String response = output.toString();
return response;
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
progressdailog.dismiss();
Log.e("Output", result);
}
}

Problem in logs:

07-31 15:26:31.832 18716-18716/com.example E/Output﹕ cannot bind ‘tcp:5038’ * daemon not running. starting it now on port 5038 *

I am not able to take a screenshot, but if I ran the same command on command prompt then this is working fine.

But if I execute

new ExecuteCommand(MainActivity.this).execute("ls");

this works fine. Where is the problem in command?