Log4j Android

介绍日志工具类Log4j

在Android中的使用 

首先需要下载Log4j：http://logging.apache.org/log4j/2.x/

 以及Log4j for android: https://code.google.com/p/android-logging-log4j/

（转载请标注：源自;Phodal's Blog)

在AndroidManifest.xml中，增加如下设置：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

然后在程序创建新的类：

public class ConfigureLog4J {
    public static void configure() {
            final LogConfigurator logConfigurator = new LogConfigurator();
            logConfigurator.setFileName(Environment.getExternalStorageDirectory()
                + File.separator + "YourApplication" + File.separator + "logs"
                + File.separator + "debugLog.txt");
        logConfigurator.setRootLevel(Level.ERROR);
        logConfigurator.setLevel("org.apache", Level.ERROR);
        logConfigurator.setFilePattern("%d %-5p [%c{2}]-[%L] %m%n");
        logConfigurator.setMaxFileSize(1024 * 1024 * 5);
        logConfigurator.setImmediateFlush(true);
        logConfigurator.configure();
    }
}

在Activity中调用:

private static final Logger log = Logger.getLogger(EventNotification.class);
static {
        //Set up the log4j logger
        ConfigureLog4J.configure();
        LogManager.getRootLogger().setLevel((Level)Level.DEBUG);
}