Android程序崩溃捕获

import java.io.File;      import java.io.FileOutputStream;      import java.io.PrintWriter;      import java.io.StringWriter;      import java.lang.Thread.UncaughtExceptionHandler;      import java.lang.reflect.Field;      import java.net.UnknownHostException;      import java.text.DateFormat;      import java.text.SimpleDateFormat;      import java.util.Date;      import java.util.HashMap;      import java.util.Map;            import android.annotation.SuppressLint;      import android.content.Context;      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.telephony.TelephonyManager;      import android.text.TextUtils;      import android.util.Log;      import android.widget.Toast;            /**      * 捕获android程序崩溃日志<br>      * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序.      *       * @author PMTOAM      *       */      @SuppressLint("SimpleDateFormat")      public class CrashHandler implements UncaughtExceptionHandler      {                public static final String TAG = CrashHandler.class.getCanonicalName();                // 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("yyyyMMdd_HHmmss");                /**          * 保证只有一个实例          */          private CrashHandler()          {          }                /**          * 获取实例 ，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          */          @Override          public 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()              {                  @Override                  public void run()                  {                      Looper.prepare();                      Toast.makeText(mContext, "很抱歉，程序出现异常。", Toast.LENGTH_LONG)                              .show();                      Looper.loop();                  }              }.start();                    // 收集设备参数信息              collectDeviceInfo(mContext);                    // 保存日志文件              String str = saveCrashInfo2File(ex);              Log.e(TAG, str);                    return false;          }                /**          * 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");              }                    sb.append("\n" + getStackTraceString(ex));                    try              {                  String time = formatter.format(new Date());                        TelephonyManager mTelephonyMgr = (TelephonyManager) mContext                          .getSystemService(Context.TELEPHONY_SERVICE);                  String imei = mTelephonyMgr.getDeviceId();                  if (TextUtils.isEmpty(imei))                  {                      imei = "unknownimei";                  }                        String fileName = time + "_" + imei + ".txt";                        File sdDir = null;                        if (Environment.getExternalStorageState().equals(                          android.os.Environment.MEDIA_MOUNTED))                      sdDir = Environment.getExternalStorageDirectory();                        File cacheDir = new File(sdDir + File.separator + "MyELog");                  if (!cacheDir.exists())                      cacheDir.mkdir();                        File filePath = new File(cacheDir + File.separator + fileName);                        FileOutputStream fos = new FileOutputStream(filePath);                  fos.write(sb.toString().getBytes());                  fos.close();                        return fileName;              }              catch (Exception e)              {                  Log.e(TAG, "an error occured while writing file...", e);              }              return null;          }                /**          * 获取捕捉到的异常的字符串          */          public static String getStackTraceString(Throwable tr)          {              if (tr == null)              {                  return "";              }                    Throwable t = tr;              while (t != null)              {                  if (t instanceof UnknownHostException)                  {                      return "";                  }                  t = t.getCause();              }                    StringWriter sw = new StringWriter();              PrintWriter pw = new PrintWriter(sw);              tr.printStackTrace(pw);              return sw.toString();          }      }  

调用：

import android.app.Application;            public class MyApplication extends Application      {          @Override          public void onCreate()          {              super.onCreate();                            CrashHandler crashHandler = CrashHandler.getInstance();              crashHandler.init(getApplicationContext());          }      }  

权限：

<uses-permission android:name="android.permission.READ_PHONE_STATE" />  <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />  <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />