对于异常的捕捉

最新推荐文章于 2021-12-16 11:31:50 发布

原创最新推荐文章于 2021-12-16 11:31:50 发布 · 170 阅读

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CC 4.0 BY-SA版权

本文介绍了一个自定义的异常处理程序，该程序能在应用程序遇到未捕获异常时收集错误信息并重启应用。文章详细展示了如何使用Java实现这一过程，包括记录异常详情、通知用户以及通过定时器触发应用重启。

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   public class CrashHandler implements UncaughtExceptionHandler {
   TAppliction tAppliction;

   public CrashHandler(TAppliction tAppliction) {
       this.tAppliction = tAppliction;
   }

   // 程序任何地方，出了异常，没加catch, 就会执行uncaughtException
   @Override
   public void uncaughtException(Thread thread, Throwable ex) {

       // 收集异常信息
       String info = ex.getMessage();
       Log.i("uncaughtException", "info=" + info);

       StringWriter stringWriter = new StringWriter();

       PrintWriter printWriter = new PrintWriter(stringWriter);
       // 详细异常信息打印到printWriter, printWriter又把信息打到StringWirter, 通过stringWriter转成string
       ex.printStackTrace(printWriter);
       info = stringWriter.toString();
       Log.i("uncaughtException", "info=" + info);

       // 联网发送给服务器，
       // 开发人员通过服务器随时看异常信息

       // toast告诉用户重启
       new Thread() {
           public void run() {
               Looper.prepare();//创建looper
               Toast.makeText(tAppliction, "抱歉，程序将重启", Toast.LENGTH_LONG)
                       .show();
               Looper.loop();
           };
       }.start();

       Log.i("uncaughtException", "toast执行完了");
       //一旦杀进行就得用到这个代码；
       try {
           Thread.currentThread().sleep(2000);
       } catch (Exception e) {
           // TODO: handle exception
       }

       // 实现重启功能
//0x10000000
       Intent intent = new Intent(tAppliction, MainActivity.class);
       PendingIntent pendingIntent = PendingIntent.getActivity(tAppliction,
               100, intent, Intent.FLAG_ACTIVITY_NEW_TASK);

       // 定时器
       AlarmManager manager = (AlarmManager) tAppliction.getSystemService(Context.ALARM_SERVICE);

       manager.set(AlarmManager.RTC, System.currentTimeMillis() + 2000,pendingIntent);
       tAppliction.finishActivity();

   }

}