27、android log日志

时间：2024-09-16 12:37:02

一、记住

加写sd卡权限

二、代码

 package com.example.logtest;

 import java.io.File;

 import java.io.IOException;

 import org.apache.log4j.Appender;

 import org.apache.log4j.FileAppender;

 import org.apache.log4j.Logger;

 import org.apache.log4j.PatternLayout;

 import android.app.Activity;

 import android.os.Bundle;

 import android.os.Environment;

 import android.util.Log;

 public class MainActivity extends Activity {

     public static  Logger gLoggerTvMenu;

     public static String pathTvMenuCache =  Environment.getExternalStorageDirectory()+File.separator+"5wei"+ File.separator+"TvMenuCache"+ File.separator;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         super.onCreate(savedInstanceState);

         setContentView(R.layout.activity_main);

         gLoggerTvMenu = Logger.getLogger("tvMenu");

         PatternLayout tvMenuLayout = new PatternLayout("%d %p [%c] - %m%n");

         try {

             Appender tvMenuAppender = new FileAppender(tvMenuLayout,pathTvMenuCache+"tvMenu.log");

             gLoggerTvMenu.addAppender(tvMenuAppender);

         } catch (IOException e) {

             // TODO Auto-generated catch block

             Log.e("error", "wrong :"+e.getMessage());

             e.printStackTrace();

         }

         gLoggerTvMenu.debug("it is a test");

     }

 }

三、效果

在对应目录生成对应的日志文件

四、demo外链

http://pan.baidu.com/s/1dDCiS17

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