27、android log日志

一、记住

加写sd卡权限

 

二、代码

 1 package com.example.logtest;

 2 

 3 import java.io.File;

 4 import java.io.IOException;

 5 

 6 import org.apache.log4j.Appender;

 7 import org.apache.log4j.FileAppender;

 8 import org.apache.log4j.Logger;

 9 import org.apache.log4j.PatternLayout;

10 

11 

12 import android.app.Activity;

13 import android.os.Bundle;

14 import android.os.Environment;

15 import android.util.Log;

16 

17 

18 

19 public class MainActivity extends Activity {

20 

21     public static  Logger gLoggerTvMenu;

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

23     

24     @Override

25     protected void onCreate(Bundle savedInstanceState) {

26         super.onCreate(savedInstanceState);

27         setContentView(R.layout.activity_main);

28         

29 

30         gLoggerTvMenu = Logger.getLogger("tvMenu");

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

32         try {

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

34             gLoggerTvMenu.addAppender(tvMenuAppender);

35         } catch (IOException e) {

36             // TODO Auto-generated catch block

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

38             e.printStackTrace();

39         }

40         

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

42     }

43 }

View Code

 

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