android crash日志捕获

作者地址：http://blog.csdn.net/hundsong/article/details/6529858

publicclass CrashApplication extends Application {@Overridepublicvoid onCreate() {super.onCreate();CrashHandler crashHandler = CrashHandler.getInstance();crashHandler.init(getApplicationContext());}}

CrashHandler如下：

package com.scott.crash;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 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.net.ConnectivityManager;import android.net.NetworkInfo;import android.net.Uri;import android.os.Build;import android.os.Environment;import android.os.Looper;import android.util.Log;import android.widget.Toast;/** * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告. *  * @author user *  */public class CrashHandler implements UncaughtExceptionHandler {public static final String TAG = "CrashHandler";//系统默认的UncaughtException处理类 private Thread.UncaughtExceptionHandler mDefaultHandler;//CrashHandler实例private static CrashHandler INSTANCE = new CrashHandler();//程序的Context对象private Context mContext;//用来存储设备信息和异常信息private Map<String, String> infos = new HashMap<String, String>();//用于格式化日期,作为日志文件名的一部分private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");/** 保证只有一个CrashHandler实例 */private CrashHandler() {}/** 获取CrashHandler实例 ,单例模式 */public static CrashHandler getInstance() {return INSTANCE;}/** * 初始化 *  * @param context */public void init(Context context) {mContext = context;//获取系统默认的UncaughtException处理器mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();//设置该CrashHandler为程序的默认处理器Thread.setDefaultUncaughtExceptionHandler(this);}/** * 当UncaughtException发生时会转入该函数来处理 */@Overridepublic void uncaughtException(Thread thread, Throwable ex) {if (!handleException(ex) && mDefaultHandler != null) {//如果用户没有处理则让系统默认的异常处理器来处理mDefaultHandler.uncaughtException(thread, ex);} else {try {Thread.sleep(3000);} catch (InterruptedException e) {Log.e(TAG, "error : ", e);}//退出程序android.os.Process.killProcess(android.os.Process.myPid());System.exit(1);}}/** * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成. *  * @param ex * @return true:如果处理了该异常信息;否则返回false. */private boolean handleException(Throwable ex) {if (ex == null) {return false;}//使用Toast来显示异常信息new Thread() {@Overridepublic void run() {Looper.prepare();Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_LONG).show();Looper.loop();}}.start();//收集设备参数信息 collectDeviceInfo(mContext);//保存日志文件 saveCrashInfo2File(ex);return true;}/** * 收集设备参数信息 * @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 + "";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);}}}/** * 保存错误信息到文件中 *  * @param ex * @return返回文件名称,便于将文件传送到服务器 */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 = "crash-" + time + "-" + timestamp + ".log";if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {String path = "/sdcard/crash/";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;}/** * 网络是否可用 *  * @param context * @return *//*private boolean isNetworkAvailable(Context context) {ConnectivityManager mgr = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);NetworkInfo[] info = mgr.getAllNetworkInfo();    if (info != null) {    for (int i = 0; i < info.length; i++) {    if (info[i].getState() == NetworkInfo.State.CONNECTED) {    return true;    }    }    }return false;}*//** *  * @param _context * @param filePath */private void sendErrorMail(Context _context , String filePath) {Intent sendIntent = new Intent(Intent.ACTION_SEND);String subject = "Error Description";String body = "Sorry for your inconvenience .\nWe assure you that we will solve this problem as soon possible." + "\n\nThanks for using app.";sendIntent.setType("plain/text");sendIntent.putExtra(Intent.EXTRA_EMAIL,new String[] {"[e-mail]"});sendIntent.putExtra(Intent.EXTRA_TEXT, body);sendIntent.putExtra(Intent.EXTRA_SUBJECT, subject);sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(new File(filePath)) );sendIntent.setType("message/rfc822");_context.startActivity( Intent.createChooser(sendIntent, "App_name"));}}