log To File - Android App

Android examples for App:Log

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Description

log To File

Demo Code


//package com.java2s;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Main {
    private static final int LOG_SIZE = 1024 * 512;
    private static String sLogPath;
    private static String slogFile = "Log.txt";
    private static SimpleDateFormat sDateFormat = new SimpleDateFormat(
            "yyyy-MM-dd HH:mm:ss");

    public static void logToFile(String content) {
        Date nowtime = new Date();
        String needWriteMessage = sDateFormat.format(nowtime) + ":"
                + content;/*from  ww  w.j  a v a2  s.  c  om*/

        try {
            File file = new File(sLogPath, slogFile);
            if (!file.exists()) {
                ensurePath(file);
                file.createNewFile();
            }

            FileWriter filerWriter = new FileWriter(file, true);
            BufferedWriter bufWriter = new BufferedWriter(filerWriter);
            bufWriter.write(needWriteMessage);
            bufWriter.newLine();
            bufWriter.close();
            filerWriter.close();

            FileInputStream fis = new FileInputStream(file);
            if (fis.available() > LOG_SIZE) {
                file.delete();
            }
            fis.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static synchronized boolean ensurePath(File file) {
        String filePath = file.getParent();
        File dir = new File(filePath);
        if (!dir.exists()) {
            dir.mkdirs();
        }
        return dir.exists();
    }
}

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