27、android log日志

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