Reading logs programatically

SDK Version:  M3

Writing logs into logcat from yuor application is quite easy, reading the logcat programmatically is just a bit more tricky.

Reading logs is usually used for bugreport purposes.

The following code reads logs and displays then in a TextView:

public class LogTest extends Activity {

  @Override

  public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

    try {

      Process process = Runtime.getRuntime().exec("logcat -d");

      BufferedReader bufferedReader = new BufferedReader(

      new InputStreamReader(process.getInputStream()));

                       

      StringBuilder log=new StringBuilder();

      String line;

      while ((line = bufferedReader.readLine()) != null) {

        log.append(line);

      }

      TextView tv = (TextView)findViewById(R.id.textView1);

      tv.setText(log.toString());

    } catch (IOException e) {

    }

  }

}

When I first fint this solution, I was afraid that it will require some extreme permission because it runs logcat like a console command.

Read more: Hello Android

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