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 }

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