CrashHanlderExcetpion.java

package com.ztspeech.simutalk2.exception;

import java.io.File;
import java.io.FileOutputStream;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import com.ztspeech.simutalk2.dictionary.util.Util;
import com.ztspeech.simutalk2.qa.MainActivity;
import com.ztspeech.simutalk2.qa.MsgService;


import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
import android.os.Environment;
import android.os.Looper;
import android.util.Log;
import android.widget.Toast;

/**
 * UncaughtException������,��������Uncaught�쳣��ʱ��,�и������ӹܳ���,����¼���ʹ��󱨸�.
 * 
 * @author user
 * 
 */
public class CrashHanlderExcetpion implements UncaughtExceptionHandler {
	
	public static final String TAG = "CrashHandler";
	
	//ϵͳĬ�ϵ�UncaughtException������ 
	private Thread.UncaughtExceptionHandler mDefaultHandler;
	//CrashHandlerʵ��
	private static CrashHanlderExcetpion INSTANCE = new CrashHanlderExcetpion();
	//�����Context����
	private Context mContext;
	//�����洢�豸��Ϣ���쳣��Ϣ
	private Map<String, String> infos = new HashMap<String, String>();

	//���ڸ�ʽ������,��Ϊ��־�ļ�����һ����
	private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");

	/** ��ֻ֤��һ��CrashHandlerʵ�� */
	private CrashHanlderExcetpion() {
	}

	/** ��ȡCrashHandlerʵ�� ,����ģʽ */
	public static CrashHanlderExcetpion getInstance() {
		return INSTANCE;
	}

	/**
	 * ��ʼ��
	 * 
	 * @param context
	 */
	public void init(Context context) {
		mContext = context;
		//��ȡϵͳĬ�ϵ�UncaughtException������
		mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
		//���ø�CrashHandlerΪ�����Ĭ�ϴ�����
		Thread.setDefaultUncaughtExceptionHandler(this);
	}

	/**
	 * ��UncaughtException����ʱ��ת��ú���������
	 */
	@Override
	public void uncaughtException(Thread thread, Throwable ex) {
		if (!handleException(ex) && mDefaultHandler != null) {
			//����û�û�д�������ϵͳĬ�ϵ��쳣������������
			mDefaultHandler.uncaughtException(thread, ex);
		} else {
			
			//�˳�����
			MainActivity mMain = MainActivity.getInstance();
			if(mMain.getService()!=null){
				mMain.stopService(mMain.getService());
			}
			android.os.Process.killProcess(android.os.Process.myPid());
			System.exit(1);
		}
	}

	/**
	 * �Զ��������,�ռ�������Ϣ ���ʹ��󱨸�Ȳ������ڴ����.
	 * 
	 * @param ex
	 * @return true:��������˸��쳣��Ϣ;���򷵻�false.
	 */
	private boolean handleException(Throwable ex) {
		if (ex == null) {
			return false;
		}
		//ʹ��Toast����ʾ�쳣��Ϣ
		new Thread() {
			@Override
			public void run() {
				Looper.prepare();
				Toast.makeText(mContext, "�ܱ�Ǹ,�϶���������쳣,�����˳�.", Toast.LENGTH_SHORT).show();
				Looper.loop();
			}
		}.start();
		//�ռ��豸������Ϣ 
		collectDeviceInfo(mContext);
		//������־�ļ� 
		saveCrashInfo2File(ex);
		return true;
	}
	
	/**
	 * �ռ��豸������Ϣ
	 * @param ctx
	 */
	public void collectDeviceInfo(Context ctx) {
		try {
			PackageManager pm = ctx.getPackageManager();
			PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
			if (pi != null) {
				String versionName = pi.versionName == null ? "null" : pi.versionName;
				String versionCode = pi.versionCode + "";
				//String model = Hutils.getMODEL();
				
				//infos.put("model", model);
				infos.put("versionName", versionName);
				infos.put("versionCode", versionCode);
			}
		} catch (NameNotFoundException e) {
			Log.e(TAG, "an error occured when collect package info", e);
		}
		Field[] fields = Build.class.getDeclaredFields();
		for (Field field : fields) {
			try {
				field.setAccessible(true);
				infos.put(field.getName(), field.get(null).toString());
				Log.d(TAG, field.getName() + " : " + field.get(null));
			} catch (Exception e) {
				Log.e(TAG, "an error occured when collect crash info", e);
			}
		}
	}

	/**
	 * ���������Ϣ���ļ���
	 * 
	 * @param ex
	 * @return	�����ļ�����,���ڽ��ļ����͵�������
	 */
	private String saveCrashInfo2File(Throwable ex) {
		
		StringBuffer sb = new StringBuffer();
		for (Map.Entry<String, String> entry : infos.entrySet()) {
			String key = entry.getKey();
			String value = entry.getValue();
			sb.append(key + "=" + value + "\n");
		}
		
		Writer writer = new StringWriter();
		PrintWriter printWriter = new PrintWriter(writer);
		ex.printStackTrace(printWriter);
		Throwable cause = ex.getCause();
		while (cause != null) {
			cause.printStackTrace(printWriter);
			cause = cause.getCause();
		}
		printWriter.close();
		String result = writer.toString();
		sb.append(result);
		try {
			long timestamp = System.currentTimeMillis();
			String time = formatter.format(new Date());
			String fileName = time + "-" + timestamp + ".zts";
			if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
				String path = Util.ZTSPEECH_PATH+"/error/";
				File dir = new File(path);
				if (!dir.exists()) {
					dir.mkdirs();
				}
				FileOutputStream fos = new FileOutputStream(path + fileName);
				fos.write(sb.toString().getBytes());
				fos.close();
			}
			return fileName;
		} catch (Exception e) {
			Log.e(TAG, "an error occured while writing file...", e);
		}
		return null;
	}
}