异常捕获器

importjava.io.File; importjava.io.FileOutputStream; importjava.io.PrintWriter; importjava.io.StringWriter; importjava.io.Writer; importjava.lang.Thread.UncaughtExceptionHandler; importjava.lang.reflect.Field; importjava.text.DateFormat; importjava.text.SimpleDateFormat; importjava.util.Date; importjava.util.HashMap; importjava.util.Map;   importandroid.app.AlarmManager; importandroid.app.PendingIntent; importandroid.content.Context; importandroid.content.Intent; importandroid.content.pm.PackageInfo; importandroid.content.pm.PackageManager; importandroid.content.pm.PackageManager.NameNotFoundException; importandroid.os.Build; importandroid.os.Environment; importandroid.os.Looper; importandroid.os.Process; importandroid.util.Log; importandroid.widget.Toast;   importcom.bwei.xme.MainActivity;   import staticandroid.content.Intent.FLAG_ACTIVITY_NEW_TASK;   /** * 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 * */ publicclassCrashHandler implements UncaughtExceptionHandler {   publicstaticfinal String TAG = "CrashHandler";   //系统默认的UncaughtException处理类 privateThread.UncaughtExceptionHandler mDefaultHandler; //CrashHandler实例 privatestaticCrashHandler INSTANCE = new CrashHandler(); //程序的Context对象 privateContext mContext; //用来存储设备信息和异常信息 privateMap<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 privateDateFormat formatter= new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");   /** 保证只有一个CrashHandler实例*/ privateCrashHandler() { }   /** 获取CrashHandler实例 ,单例模式*/ publicstaticCrashHandler getInstance() { returnINSTANCE; }   /** * 初始化 * * @param context */ publicvoidinit(Contextcontext) { 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 */ @Override publicvoiduncaughtException(Threadthread,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 {   //退出程序           //第一种方法 // // Intent intent = new Intent(mContext, ReportActivity.class); // intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // mContext.startActivity(intent); // // Process.killProcess(Process.myPid());     //第二种方法 // Intent intent = new Intent(mContext, MainActivity.class); // intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); // mContext.startActivity(intent); // android.os.Process.killProcess(android.os.Process.myPid());   } }   /** * 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. */ privatebooleanhandleException(Throwableex) { if (ex==null) { returnfalse; } // 使用Toast来显示异常信息 // new Thread() { // @Override // public 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);   returntrue; }   /** * 收集设备参数信息 * @param ctx */ publicvoidcollectDeviceInfo(Contextctx) { 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 */ privateStringsaveCrashInfo2File(Throwableex) {   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"); } sb.append(ex.getMessage()); System.out.println("sb ="+ sb.toString()); // // 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); // } returnnull; } 

}

在application类的oncreate里

CrashHandler.getInstance(). init(this);