android 写log到文件

网上找的一个很强大的实现方法，原网页的链接找不到了，没法转载，特此声明一下。
原作者貌似还设了几个小陷阱，大概是不希望我们不劳而获，能多理解一下代码。很多人拿了源码去用，都说日志并没写出来，自己debug了下，果然有些地方是要做改动的，这里把改好的source贴上来，不保证全部正确了，因为我只跑了最基本的写日志，copy日志等功能。

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Comparator;
import java.util.Date;
import java.util.List;

import android.app.AlarmManager;
import android.app.Notification;
import android.app.PendingIntent;
import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Environment;
import android.os.IBinder;
import android.os.PowerManager;
import android.os.PowerManager.WakeLock;
import android.util.Log;

import com.XXX.helloandroid.R;

/**
 * 日志服务，日志默认会存储在SDcar里,如果没有SDcard会存储在内存中的安装目录下面。
 * 1.本服务默认在SDcard中每天生成一个日志文件,
 * 2.如果有SDCard的话会将之前内存中的文件拷贝到SDCard中
 * 3.如果没有SDCard，在安装目录下只保存当前在写日志
 * 4.SDcard的装载卸载动作会在步骤2,3中切换
 * 5.SDcard中的日志文件只保存7天
 * 6.监视App运行的LogCat日志（sdcard mounted）:sdcard/MyApp/log/yyyy-MM-dd HHmmss.log（默认）
 * 7.监视App运行的LogCat日志（sdcard unmounted）:/data/data/包名/files/log/yyyy-MM-dd HHmmss.log
 * 8.本service的运行日志：/data/data/包名/files/log/Log.log
 * @author Administrator
 * 
 */
public class LogService extends Service {
	private static final String TAG = "LogService";

	private static final int MEMORY_LOG_FILE_MAX_SIZE = 10 * 1024 * 1024;			//内存中日志文件最大值，10M
	private static final int MEMORY_LOG_FILE_MONITOR_INTERVAL = 10 * 60 * 1000;		//内存中的日志文件大小监控时间间隔，10分钟
	private static final int SDCARD_LOG_FILE_SAVE_DAYS = 7;							//sd卡中日志文件的最多保存天数
	
	private String LOG_PATH_MEMORY_DIR;		//日志文件在内存中的路径(日志文件在安装目录中的路径)
	private String LOG_PATH_SDCARD_DIR;		//日志文件在sdcard中的路径
	@SuppressWarnings("unused")
	private String LOG_SERVICE_LOG_PATH;	//本服务产生的日志，记录日志服务开启失败信息
	
	private final int SDCARD_TYPE = 0;			//当前的日志记录类型为存储在SD卡下面
	private final int MEMORY_TYPE = 1;			//当前的日志记录类型为存储在内存中
	private int CURR_LOG_TYPE = SDCARD_TYPE;	//当前的日志记录类型
	
	private String CURR_INSTALL_LOG_NAME;	//如果当前的日志写在内存中，记录当前的日志文件名称
	
	private String logServiceLogName = "Log.log";//本服务输出的日志文件名称
	private SimpleDateFormat myLogSdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	private OutputStreamWriter writer;
	
	private SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HHmmss");//日志名称格式
	
	private Process process;
	
	private WakeLock wakeLock;  
	
	private SDStateMonitorReceiver sdStateReceiver; //SDcard状态监测
	private LogTaskReceiver logTaskReceiver; 
	
	/* 是否正在监测日志文件大小；
	 * 如果当前日志记录在SDcard中则为false
	 * 如果当前日志记录在内存中则为true*/
	private boolean logSizeMoniting = false;		
	
	private static String MONITOR_LOG_SIZE_ACTION = "MONITOR_LOG_SIZE";		//日志文件监测action
	private static String SWITCH_LOG_FILE_ACTION = "SWITCH_LOG_FILE_ACTION";	//切换日志文件action
	
	@Override
	public IBinder onBind(Intent intent) {
		return null;
	}

	// This is the new method that instead of the old onStart method on the pre-2.0 platform.
	@Override //开始服务，执行更新widget组件的操作
	public int onStartCommand(Intent intent, int flags, int startId) {
		
		Log.i(TAG, "===================onStartCommand===========================");
		
		Notification notification = new Notification(R.drawable.logo,
                "wf log service is running",
                System.currentTimeMillis());
		PendingIntent pi=PendingIntent.getService(this, 0, intent, 0);
		notification.setLatestEventInfo(this, "WF Log Service",
		        "wf log service is running！", pi);
		
		//让该service前台运行，避免手机休眠时系统自动杀掉该服务
		//如果 id 为 0 ，那么状态栏的 notification 将不会显示。
		startForeground(startId, notification);
		
		return Service.START_REDELIVER_INTENT;
	}
	
	@Override
	public void onCreate() {
		super.onCreate();
		init();
		register();
		deploySwitchLogFileTask();	
		new LogCollectorThread().start();
	}
	
	private void init(){
		LOG_PATH_MEMORY_DIR = getFilesDir().getAbsolutePath() + File.separator + "log";
		LOG_SERVICE_LOG_PATH = LOG_PATH_MEMORY_DIR + File.separator + logServiceLogName;
		LOG_PATH_SDCARD_DIR = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator
							+	"MyApp" + File.separator + "log";
		createLogDir();
		
		try {
			writer = new OutputStreamWriter(new FileOutputStream(
					LOG_SERVICE_LOG_PATH, true));
		} catch (FileNotFoundException e) {
			Log.e(TAG, e.getMessage(), e);
		}
		PowerManager pm = (PowerManager) getApplicationContext().getSystemService(Context.POWER_SERVICE);
		wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
		
		CURR_LOG_TYPE = getCurrLogType();
		Log.i(TAG, "LogService onCreate");
	}
	
	private void register(){
		IntentFilter sdCarMonitorFilter = new IntentFilter();
		sdCarMonitorFilter.addAction(Intent.ACTION_MEDIA_MOUNTED);
		sdCarMonitorFilter.addAction(Intent.ACTION_MEDIA_UNMOUNTED);
		sdCarMonitorFilter.addDataScheme("file");
		sdStateReceiver = new SDStateMonitorReceiver();
		registerReceiver(sdStateReceiver, sdCarMonitorFilter);
		
		IntentFilter logTaskFilter = new IntentFilter();
		logTaskFilter.addAction(MONITOR_LOG_SIZE_ACTION);
		logTaskFilter.addAction(SWITCH_LOG_FILE_ACTION);
		logTaskReceiver = new LogTaskReceiver();
		registerReceiver(logTaskReceiver,logTaskFilter);
	}
	
	
	
	/**
	 * 获取当前应存储在内存中还是存储在SDCard中
	 * @return
	 */
	public int getCurrLogType(){
		if (!Environment.getExternalStorageState().equals(
				Environment.MEDIA_MOUNTED)) {
			return MEMORY_TYPE;
		}else{
			return SDCARD_TYPE;
		}
	}

	/**
	 * 部署日志切换任务，每天凌晨切换日志文件
	 */
	private void deploySwitchLogFileTask() {
		Intent intent = new Intent(SWITCH_LOG_FILE_ACTION);
		PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
		Calendar calendar = Calendar.getInstance();
		calendar.add(Calendar.DAY_OF_MONTH, 1);
		calendar.set(Calendar.HOUR_OF_DAY, 0);
		calendar.set(Calendar.MINUTE, 0);
		calendar.set(Calendar.SECOND, 0);

		// 部署任务
		AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
		am.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), AlarmManager.INTERVAL_DAY, sender);
		recordLogServiceLog("deployNextTask succ,next task time is:"+myLogSdf.format(calendar.getTime()));
	}

	/**
	 * 日志收集
	 * 1.清除日志缓存 
	 * 2.杀死应用程序已开启的Logcat进程防止多个进程写入一个日志文件
	 * 3.开启日志收集进程 
	 * 4.处理日志文件
	 *   移动 OR 删除
	 */
	class LogCollectorThread extends Thread {
		
		public LogCollectorThread(){
			super("LogCollectorThread");
			Log.d(TAG, "LogCollectorThread is create");
		}
		
		@Override
		public void run() {
			try {
				wakeLock.acquire();	//唤醒手机
				
				clearLogCache();
				
				List<String> orgProcessList = getAllProcess();
				List<ProcessInfo> processInfoList = getProcessInfoList(orgProcessList);
				killLogcatProc(processInfoList);
				
				createLogCollector();
				
				Thread.sleep(1000);//休眠，创建文件，然后处理文件，不然该文件还没创建，会影响文件删除
				
				handleLog();
				
				wakeLock.release();	//释放
			} catch (Exception e) {
				e.printStackTrace();
				recordLogServiceLog(Log.getStackTraceString(e));
			}
		}
	}
	
	/**
	 * 每次记录日志之前先清除日志的缓存, 不然会在两个日志文件中记录重复的日志
	 */
	private void clearLogCache() {
		Process proc = null;
		List<String> commandList = new ArrayList<String>();
		commandList.add("logcat");
		commandList.add("-c");
		try {
			proc = Runtime.getRuntime().exec(
					commandList.toArray(new String[commandList.size()]));
			StreamConsumer errorGobbler = new StreamConsumer(proc
					.getErrorStream());

			StreamConsumer outputGobbler = new StreamConsumer(proc
					.getInputStream());

			errorGobbler.start();
			outputGobbler.start();
			if (proc.waitFor() != 0) {
				Log.e(TAG, " clearLogCache proc.waitFor() != 0");
				recordLogServiceLog("clearLogCache clearLogCache proc.waitFor() != 0");
			}
		} catch (Exception e) {
			Log.e(TAG, "clearLogCache failed", e);
			recordLogServiceLog("clearLogCache failed");
		} finally {
			try {
				proc.destroy();
			} catch (Exception e) {
				Log.e(TAG, "clearLogCache failed", e);
				recordLogServiceLog("clearLogCache failed");
			}
		}
	}

	/**
	 * 关闭由本程序开启的logcat进程：
	 * 根据用户名称杀死进程(如果是本程序进程开启的Logcat收集进程那么两者的USER一致)
	 * 如果不关闭会有多个进程读取logcat日志缓存信息写入日志文件
	 * 
	 * @param allProcList
	 * @return
	 */
	private void killLogcatProc(List<ProcessInfo> allProcList) {
		if(process != null){
			process.destroy();
		}
		String packName = this.getPackageName();
		String myUser = getAppUser(packName, allProcList);
		recordLogServiceLog("app user is:"+myUser);
		recordLogServiceLog("============= START TYPING PROC LIST INFO ==============");
		//只打印本App和logcat的进程信息，其他进程信息不打印
		for (ProcessInfo processInfo : allProcList) {
			if (myUser.equals( processInfo.user ) || "logcat".equals( processInfo.name )) {
				recordLogServiceLog(processInfo.toString());
			}
		}
		recordLogServiceLog("============= END TYPING PROC LIST INFO ==============");
		for (ProcessInfo processInfo : allProcList) {
			if (processInfo.name.toLowerCase().equals("logcat")
					&& processInfo.user.equals(myUser)) {
				android.os.Process.killProcess(Integer
						.parseInt(processInfo.pid));
				recordLogServiceLog("kill another logcat process success,the process info is:"
						+ processInfo);
			}
		}
	}

	/**
	 * 获取本程序的用户名称
	 * 
	 * @param packName
	 * @param allProcList
	 * @return
	 */
	private String getAppUser(String packName, List<ProcessInfo> allProcList) {
		for (ProcessInfo processInfo : allProcList) {
			if (processInfo.name.equals(packName)) {
				return processInfo.user;
			}
		}
		return null;
	}

	/**
	 * 根据ps命令得到的内容获取PID，User，name等信息
	 * 
	 * @param orgProcessList
	 * @return
	 */
	private List<ProcessInfo> getProcessInfoList(List<String> orgProcessList) {
		List<ProcessInfo> procInfoList = new ArrayList<ProcessInfo>();
		for (int i = 1; i < orgProcessList.size(); i++) {
			String processInfo = orgProcessList.get(i);
			String[] proStr = processInfo.split(" ");
			// USER PID PPID VSIZE RSS WCHAN PC NAME
			// root 1 0 416 300 c00d4b28 0000cd5c S /init
			List<String> orgInfo = new ArrayList<String>();
			for (String str : proStr) {
				if (!"".equals(str)) {
					orgInfo.add(str);
				}
			}
			if (orgInfo.size() == 9) {
				ProcessInfo pInfo = new ProcessInfo();
				pInfo.user = orgInfo.get(0);
				pInfo.pid = orgInfo.get(1);
				pInfo.ppid = orgInfo.get(2);
				pInfo.name = orgInfo.get(8);
				procInfoList.add(pInfo);
			}
		}
		return procInfoList;
	}

	/**
	 * 运行PS命令得到进程信息
	 * 
	 * @return
	 * 			USER PID PPID VSIZE RSS WCHAN PC NAME
	 * 			root 1 0 416 300 c00d4b28 0000cd5c S /init
	 */
	private List<String> getAllProcess() {
		List<String> orgProcList = new ArrayList<String>();
		Process proc = null;
		try {
			proc = Runtime.getRuntime().exec("ps");
			StreamConsumer errorConsumer = new StreamConsumer(proc
					.getErrorStream());

			StreamConsumer outputConsumer = new StreamConsumer(proc
					.getInputStream(), orgProcList);

			errorConsumer.start();
			outputConsumer.start();
			if (proc.waitFor() != 0) {
				Log.e(TAG, "getAllProcess proc.waitFor() != 0");
				recordLogServiceLog("getAllProcess proc.waitFor() != 0");
			}
		} catch (Exception e) {
			Log.e(TAG, "getAllProcess failed", e);
			recordLogServiceLog("getAllProcess failed");
		} finally {
			try {
				proc.destroy();
			} catch (Exception e) {
				Log.e(TAG, "getAllProcess failed", e);
				recordLogServiceLog("getAllProcess failed");
			}
		}
		return orgProcList;
	}
	
	/**
	 * 开始收集日志信息
	 */
	public void createLogCollector() {
		String logFileName = sdf.format(new Date()) + ".log";// 日志文件名称
		List<String> commandList = new ArrayList<String>();
		commandList.add("logcat");
		commandList.add("-f");
//		commandList.add(LOG_PATH_INSTALL_DIR + File.separator + logFileName);
		commandList.add(getLogPath());
		commandList.add("-v");
		commandList.add("time");
		commandList.add("*:I");
		
		//commandList.add("*:E");// 过滤所有的错误信息

		// 过滤指定TAG的信息
		// commandList.add("MyAPP:V");
		// commandList.add("*:S");
		try {
			process = Runtime.getRuntime().exec(
					commandList.toArray(new String[commandList.size()]));
			recordLogServiceLog("start collecting the log,and log name is:"+logFileName);
			// process.waitFor();
		} catch (Exception e) {
			Log.e(TAG, "CollectorThread == >" + e.getMessage(), e);
			recordLogServiceLog("CollectorThread == >" + e.getMessage());
		}
	}
	
	/**
	 * 根据当前的存储位置得到日志的绝对存储路径
	 * @return
	 */
	public String getLogPath(){
		createLogDir();
		String logFileName = sdf.format(new Date()) + ".log";// 日志文件名称
		if(CURR_LOG_TYPE == MEMORY_TYPE){
			CURR_INSTALL_LOG_NAME = logFileName;
			Log.d(TAG, "Log stored in memory, the path is:"+LOG_PATH_MEMORY_DIR + File.separator + logFileName);
			return LOG_PATH_MEMORY_DIR + File.separator + logFileName;
		}else{
			CURR_INSTALL_LOG_NAME = null;
			Log.d(TAG, "Log stored in SDcard, the path is:"+LOG_PATH_SDCARD_DIR + File.separator + logFileName);
			return LOG_PATH_SDCARD_DIR + File.separator + logFileName;
		}
	}
	
	/**
	 * 处理日志文件
	 * 1.如果日志文件存储位置切换到内存中，删除除了正在写的日志文件
	 *   并且部署日志大小监控任务，控制日志大小不超过规定值
	 * 2.如果日志文件存储位置切换到SDCard中，删除7天之前的日志，移
	 * 	   动所有存储在内存中的日志到SDCard中，并将之前部署的日志大小
	 *   监控取消
	 */
	public void handleLog(){
		if(CURR_LOG_TYPE == MEMORY_TYPE){
			deployLogSizeMonitorTask();
			deleteMemoryExpiredLog();
		}else{
			moveLogfile();
			cancelLogSizeMonitorTask();
			deleteSDcardExpiredLog();
		}
	}
	
	/**
	 * 部署日志大小监控任务
	 */
	private void deployLogSizeMonitorTask() {
		if(logSizeMoniting){	//如果当前正在监控着，则不需要继续部署
			return;
		}
		logSizeMoniting = true;
		Intent intent = new Intent(MONITOR_LOG_SIZE_ACTION);
		PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
		AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
		am.setRepeating(AlarmManager.RTC_WAKEUP,System.currentTimeMillis(), MEMORY_LOG_FILE_MONITOR_INTERVAL, sender);
		Log.d(TAG, "deployLogSizeMonitorTask() succ !");
		Calendar calendar = Calendar.getInstance();
		recordLogServiceLog("deployLogSizeMonitorTask() succ ,start time is " + calendar.getTime().toLocaleString());
	}
	
	/**
	 * 取消部署日志大小监控任务
	 */  
	private void cancelLogSizeMonitorTask() {
		logSizeMoniting = false;
		AlarmManager am = (AlarmManager) getSystemService(ALARM_SERVICE);
		Intent intent = new Intent(MONITOR_LOG_SIZE_ACTION);
		PendingIntent sender = PendingIntent.getBroadcast(this, 0, intent, 0);
		am.cancel(sender);
		
		Log.d(TAG, "canelLogSizeMonitorTask() succ");
	}
	
	/**
	 * 检查日志文件大小是否超过了规定大小
	 * 如果超过了重新开启一个日志收集进程
	 */
	private void checkLogSize(){
		if(CURR_INSTALL_LOG_NAME != null && !"".equals(CURR_INSTALL_LOG_NAME)){
			String path = LOG_PATH_MEMORY_DIR + File.separator + CURR_INSTALL_LOG_NAME;
			File file = new File(path);
			if(!file.exists()){
				return;
			}
			Log.d(TAG, "checkLog() ==> The size of the log is too big?");
			if(file.length() >= MEMORY_LOG_FILE_MAX_SIZE){
				Log.d(TAG, "The log's size is too big!");
				new LogCollectorThread().start();
			}
		}
	}
	
	/**
	 * 创建日志目录
	 */
	private void createLogDir() {
		File file = new File(LOG_PATH_MEMORY_DIR);
		boolean mkOk;
		if (!file.isDirectory()) {
			mkOk = file.mkdirs();
			if (!mkOk) {
				mkOk = file.mkdirs();
			}
		}

		file = new File(LOG_SERVICE_LOG_PATH);
		if (!file.exists()) {
			try {
				mkOk = file.createNewFile();
				if (!mkOk) {
					file.createNewFile();
				}
			} catch (IOException e) {
				Log.e(TAG, e.getMessage(), e);
			}
		}
		
		if (Environment.getExternalStorageState().equals(
				Environment.MEDIA_MOUNTED)) {
			file = new File(LOG_PATH_SDCARD_DIR);
			if (!file.isDirectory()) {
				mkOk = file.mkdirs();
				if (!mkOk) {
					recordLogServiceLog("move file failed,dir is not created succ");
					return;
				}
			}
		}
	}
	
	/**
	 * 将日志文件转移到SD卡下面
	 */
	private void moveLogfile() {
		if (!Environment.getExternalStorageState().equals(
				Environment.MEDIA_MOUNTED)) {
			recordLogServiceLog("move file failed, sd card does not mount");
			return;
		}
		File file = new File(LOG_PATH_SDCARD_DIR);
		if (!file.isDirectory()) {
			boolean mkOk = file.mkdirs();
			if (!mkOk) {
				recordLogServiceLog("move file failed,dir is not created succ");
				return;
			}
		}

		file = new File(LOG_PATH_MEMORY_DIR);
		if (file.isDirectory()) {
			File[] allFiles = file.listFiles();
			for (File logFile : allFiles) {
				String fileName = logFile.getName();
				//只copy App的LocCat日志文件【yyyy-MM-dd HHmmss.log】到sdcard,本LogService的运行日志【Log.log】不做copy对象
				if (logServiceLogName.equals(fileName)) {
					continue;
				}
				//String createDateInfo = getFileNameWithoutExtension(fileName);
				boolean isSucc = copy(logFile, new File(LOG_PATH_SDCARD_DIR
							+ File.separator + fileName));
				if (isSucc) {
					logFile.delete();
					recordLogServiceLog("move file success,log name is:"+fileName);
				}
			}
		}
	}

	/**
	 * 删除SDCard下过期的日志
	 */
	private void deleteSDcardExpiredLog() {
		File file = new File(LOG_PATH_SDCARD_DIR);
		if (file.isDirectory()) {
			File[] allFiles = file.listFiles();
			for (File logFile : allFiles) {
				String fileName = logFile.getName();
				if (logServiceLogName.equals(fileName)) {
					continue;
				}
				String createDateInfo = getFileNameWithoutExtension(fileName);
				if (canDeleteSDLog(createDateInfo)) {
					logFile.delete();
					Log.d(TAG, "delete expired log success,the log path is:"
							+ logFile.getAbsolutePath());

				}
			}
		}
	}
	
	/**
	 * 判断sdcard上的日志文件是否可以删除
	 * @param createDateStr
	 * @return
	 */
	public boolean canDeleteSDLog(String createDateStr) {
		boolean canDel = false;
		Calendar calendar = Calendar.getInstance();
		calendar.add(Calendar.DAY_OF_MONTH, -1 * SDCARD_LOG_FILE_SAVE_DAYS);//删除7天之前日志
		Date expiredDate = calendar.getTime();
		try {
			Date createDate = sdf.parse(createDateStr);
			canDel = createDate.before(expiredDate);
		} catch (ParseException e) {
			Log.e(TAG, e.getMessage(), e);
			canDel = false;
		}
		return canDel;
	}

	
	/**
	 * 删除内存中的过期日志，删除规则：
	 * 除了当前的日志和离当前时间最近的日志保存其他的都删除
	 */
	private void deleteMemoryExpiredLog(){
		File file = new File(LOG_PATH_MEMORY_DIR);
		if (file.isDirectory()) {
			File[] allFiles = file.listFiles();
			Arrays.sort(allFiles, new FileComparator());
			for (int i=0;i<allFiles.length-2;i++) {	//"-2"保存最近的两个日志文件
				File _file =  allFiles[i];
				if (logServiceLogName.equals(_file.getName()) ||  _file.getName().equals(CURR_INSTALL_LOG_NAME)) {
					continue;
				}
				_file.delete();
				Log.d(TAG, "delete expired log success,the log path is:"+_file.getAbsolutePath());
			}
		}
	}
	
	/**
	 * 拷贝文件
	 * @param source
	 * @param target
	 * @return
	 */
	private boolean copy(File source, File target) {
		FileInputStream in = null;
		FileOutputStream out = null;
		try {
			if(!target.exists()){
				boolean createSucc = target.createNewFile();
				if(!createSucc){
					return false;
				}
			}
			in = new FileInputStream(source);
			out = new FileOutputStream(target);
			byte[] buffer = new byte[8*1024];
			int count;
			while ((count = in.read(buffer)) != -1) {
				out.write(buffer, 0, count);
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			Log.e(TAG, e.getMessage(), e);
			recordLogServiceLog("copy file fail");
			return false;
		} finally{
			try {
				if(in != null){
					in.close();
				}
				if(out != null){
					out.close();
				}
			} catch (IOException e) {
				e.printStackTrace();
				Log.e(TAG, e.getMessage(), e);
				recordLogServiceLog("copy file fail");
				return false;
			}
		}
		
	}

	/**
	 * 记录日志服务的基本信息 防止日志服务有错，在LogCat日志中无法查找 
	 * 此日志名称为Log.log
	 * 
	 * @param msg
	 */
	private void recordLogServiceLog(String msg) {
		if (writer != null) {
			try {
				Date time = new Date();
				writer.write(myLogSdf.format(time) + " : " + msg);
				writer.write("\n");
				writer.flush();
			} catch (IOException e) {
				e.printStackTrace();
				Log.e(TAG, e.getMessage(), e);
			}
		}
	}
	
	/**
	 * 去除文件的扩展类型（.log）
	 * @param fileName
	 * @return
	 */
	private String getFileNameWithoutExtension(String fileName){
		return fileName.substring(0, fileName.indexOf("."));
	}

	class ProcessInfo {
		public String user;
		public String pid;
		public String ppid;
		public String name;

		@Override
		public String toString() {
			String str = "user=" + user + " pid=" + pid + " ppid=" + ppid
					+ " name=" + name;
			return str;
		}
	}
	class StreamConsumer extends Thread {
		InputStream is;
		List<String> list;

		StreamConsumer(InputStream is) {
			this.is = is;
		}

		StreamConsumer(InputStream is, List<String> list) {
			this.is = is;
			this.list = list;
		}

		public void run() {
			try {
				InputStreamReader isr = new InputStreamReader(is);
				BufferedReader br = new BufferedReader(isr);
				String line = null;
				while ((line = br.readLine()) != null) {
					if (list != null) {
						list.add(line);
					}
				}
			} catch (IOException ioe) {
				ioe.printStackTrace();
			}
		}
	}
	
	/**
	 * 监控SD卡状态
	 * @author Administrator
	 *
	 */
	class SDStateMonitorReceiver extends BroadcastReceiver{
		public void onReceive(Context context, Intent intent) {
			
			if(Intent.ACTION_MEDIA_UNMOUNTED.equals(intent.getAction())){	//存储卡被卸载
				if(CURR_LOG_TYPE == SDCARD_TYPE){
					Log.d(TAG, "SDcar is UNMOUNTED");
					CURR_LOG_TYPE = MEMORY_TYPE;
					new LogCollectorThread().start();
				}
			}else{															//存储卡被挂载
				if(CURR_LOG_TYPE == MEMORY_TYPE){
					Log.d(TAG, "SDcar is MOUNTED");
					CURR_LOG_TYPE = SDCARD_TYPE;
					new LogCollectorThread().start();
					
				}
			}
		}
	}
	
	/**
	 * 日志任务接收
	 * 切换日志，监控日志大小
	 * @author Administrator
	 *
	 */
	class LogTaskReceiver extends BroadcastReceiver{
		public void onReceive(Context context, Intent intent) {
			String action = intent.getAction();
			if(SWITCH_LOG_FILE_ACTION.equals(action)){
				new LogCollectorThread().start();
			}else if(MONITOR_LOG_SIZE_ACTION.equals(action)){
				checkLogSize();
			}
		}
	}
	
	class FileComparator implements Comparator<File>{
		public int compare(File file1, File file2) {
			if(logServiceLogName.equals(file1.getName())){
				return -1;
			}else if(logServiceLogName.equals(file2.getName())){
				return 1;
			}
			
			String createInfo1 = getFileNameWithoutExtension(file1.getName());
			String createInfo2 = getFileNameWithoutExtension(file2.getName());
			
			try {
				Date create1 = sdf.parse(createInfo1);
				Date create2 = sdf.parse(createInfo2);
				if(create1.before(create2)){
					return -1;
				}else{
					return 1;
				}
			} catch (ParseException e) {
				return 0;
			}
		}
	}
	
	@Override
	public void onDestroy() {
		//对于通过startForeground启动的service，需要通过stopForeground来取消前台运行状态
		stopForeground(true);
//		super.onDestroy();
		recordLogServiceLog("LogService onDestroy");
		if (writer != null) {
			try {
				writer.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		if (process != null) {
			process.destroy();
		}
		
		unregisterReceiver(sdStateReceiver);
		unregisterReceiver(logTaskReceiver);
	}

}

评论

4 楼 lovelease 2015-09-09  

淘宝萧战 写道

我也遇到类似问题了，请问下有办法修改吗？

debug一下看看，没有代码我也不好说，还有看看manifest里面读写文件的权限加了没

3 楼 淘宝萧战 2015-04-14  

我也遇到类似问题了，请问下有办法修改吗？

2 楼 lovelease 2014-11-06  

dufangyu1990 写道

你好，博主，你的这段代码我运行出错
10-23 10:28:19.590: W/System.err(17852): java.io.IOException: read failed: EBADF (Bad file number)
10-23 10:28:19.590: W/System.err(17852): at libcore.io.IoBridge.read(IoBridge.java:435)
10-23 10:28:19.590: W/System.err(17852): at java.io.FileInputStream.read(FileInputStream.java:185)
10-23 10:28:19.594: W/System.err(17852): at java.io.InputStreamReader.read(InputStreamReader.java:244)
10-23 10:28:19.594: W/System.err(17852): at java.io.BufferedReader.fillBuf(BufferedReader.java:130)
10-23 10:28:19.594: W/System.err(17852): at java.io.BufferedReader.readLine(BufferedReader.java:354)
10-23 10:28:19.594: W/System.err(17852): at com.example.demo.LogService$StreamConsumer.run(LogService.java:817)
10-23 10:28:19.594: W/System.err(17852): Caused by: libcore.io.ErrnoException: read failed: EBADF (Bad file number)
10-23 10:28:19.594: W/System.err(17852): at libcore.io.Posix.readBytes(Native Method)
10-23 10:28:19.597: W/System.err(17852): at libcore.io.Posix.read(Posix.java:119)
10-23 10:28:19.597: W/System.err(17852): at libcore.io.BlockGuardOs.read(BlockGuardOs.java:149)
10-23 10:28:19.597: W/System.err(17852): at libcore.io.IoBridge.read(IoBridge.java:425)
10-23 10:28:19.597: W/System.err(17852): ... 5 more

debug一下看看，没有代码我也不好说，还有看看manifest里面读写文件的权限加了没

1 楼 dufangyu1990 2014-10-23  

你好，博主，你的这段代码我运行出错
10-23 10:28:19.590: W/System.err(17852): java.io.IOException: read failed: EBADF (Bad file number)
10-23 10:28:19.590: W/System.err(17852): at libcore.io.IoBridge.read(IoBridge.java:435)
10-23 10:28:19.590: W/System.err(17852): at java.io.FileInputStream.read(FileInputStream.java:185)
10-23 10:28:19.594: W/System.err(17852): at java.io.InputStreamReader.read(InputStreamReader.java:244)
10-23 10:28:19.594: W/System.err(17852): at java.io.BufferedReader.fillBuf(BufferedReader.java:130)
10-23 10:28:19.594: W/System.err(17852): at java.io.BufferedReader.readLine(BufferedReader.java:354)
10-23 10:28:19.594: W/System.err(17852): at com.example.demo.LogService$StreamConsumer.run(LogService.java:817)
10-23 10:28:19.594: W/System.err(17852): Caused by: libcore.io.ErrnoException: read failed: EBADF (Bad file number)
10-23 10:28:19.594: W/System.err(17852): at libcore.io.Posix.readBytes(Native Method)
10-23 10:28:19.597: W/System.err(17852): at libcore.io.Posix.read(Posix.java:119)
10-23 10:28:19.597: W/System.err(17852): at libcore.io.BlockGuardOs.read(BlockGuardOs.java:149)
10-23 10:28:19.597: W/System.err(17852): at libcore.io.IoBridge.read(IoBridge.java:425)
10-23 10:28:19.597: W/System.err(17852): ... 5 more