问Android日志记录

EN

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class ExampleLog4JOverSLF4J {
    private final Logger log = LoggerFactory.getLogger(ExampleLog4JOverSLF4J.class);

    public void myMethod() {
        try {
            // invoke code throwing an exception
        }
        catch(Exception e) {
            log.error("An error occured...", e);
            // recover or what ever
        }
    }
}

import org.apache.log4j.Logger;

public class ExampleLog4J {
    private final Logger log = Logger.getLogger(LogConfiguratorTest.class);

    public void myMethod() {
        try {
            // invoke code throwing an exception
        }
        catch(Exception e) {
            log.error("An error occured...", e);
            // recover or what ever
        }
    }
}

root=ERROR:MyApplication
logger.com.example.ui=DEBUG:MyApplication-UI

package com.example.ui;

import com.noveogroup.android.log.Logger;
import com.noveogroup.android.log.LoggerManager;

public class MainActivity extends Activity {

  private static final Logger logger = LoggerManager.getLogger();

  private void foo(int value) {
    logger.i("entered MainActivity::foo value=%d", value);

    try {
      // some code
    } catch(IOException e) {
      logger.e("I/O error occurred", e);
    }
  }

}

I/MyApplication-UI: entered MainActivity::foo value=10
E/MyApplication-UI: I/O error occurred