Acabei de receber as primeiras 30 linhas, como posso ver as novas linhas sendo geradas no meu aplicativo, aqui está o meu código:

package com.example.showinlog;


public class ShowingLog extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        try {
            Process process = Runtime.getRuntime().exec("logcat");
            BufferedReader bufferedReader = new BufferedReader(
            new InputStreamReader(process.getInputStream()));

            StringBuilder log=new StringBuilder();
            String line; 
            while ((line = bufferedReader.readLine()) != null) {

              log.append(line);
              log.append("\n");

            }
            TextView tv = (TextView)findViewById(R.id.textView1);
            tv.setText(log.toString());
          } catch (IOException e) {
          }
    }
}