flutter的log過濾，快速定位程式碼異常

使用者未登入發表於2019-01-22
Flutter

背景

相信很多人剛用flutter的時候，看到自帶的異常捕捉log列印都懵圈過，即使是上手之後，也不能快速的找到對應的異常程式碼行數

前言

在尋找開源庫的時候，發現了一個dart團隊做的可以調整log格式的庫，但是很遺憾這個庫只會捕捉系統包和外掛包的異常，並不會捕捉本專案的異常，所以本人就做了一個基於此庫的異常捕捉log列印庫，並且做了一些flutter系統包異常的過濾

專案地址

stack_trace列印

I/flutter ( 3068): PlatformException(error, Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference, null)
I/flutter ( 3068): package:flutter/src/services/message_codecs.dart 551:7     StandardMethodCodec.decodeEnvelope
I/flutter ( 3068): package:flutter/src/services/platform_channel.dart 292:18  MethodChannel.invokeMethod
I/flutter ( 3068): dart:async/future_impl.dart 22:43                          _Completer.completeError
I/flutter ( 3068): dart:async/runtime/libasync_patch.dart 40:18               _AsyncAwaitCompleter.completeError
I/flutter ( 3068): package:flutter/src/services/platform_channel.dart         MethodChannel.invokeMethod
I/flutter ( 3068): dart:async/zone.dart 1053:19                               _CustomZone.registerUnaryCallback
I/flutter ( 3068): dart:async/runtime/libasync_patch.dart 77:23               _asyncThenWrapperHelper
I/flutter ( 3068): package:flutter/src/services/platform_channel.dart         MethodChannel.invokeMethod
I/flutter ( 3068): package:fluttertoast/fluttertoast.dart 53:33               Fluttertoast.showToast
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flutter_stack_trace列印

I/flutter ( 3068): PlatformException(error, Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference, null)
I/flutter ( 3068): package:flutter/src/services/message_codecs.dart 551:7     StandardMethodCodec.decodeEnvelope
I/flutter ( 3068): package:flutter/src/services/platform_channel.dart 292:18  MethodChannel.invokeMethod
I/flutter ( 3068): package:fluttertoast/fluttertoast.dart 53:33               Fluttertoast.showToast
I/flutter ( 3068): package:example/ui/login_page.dart 198:18                  _LoginPageState.showAccountNameEmpty
I/flutter ( 3068): package:example/presenter/login_presenter.dart 19:12       LoginPresenter.login
I/flutter ( 3068): package:example/ui/login_page.dart 135:31                  _LoginPageState.buildBody.<fn>
I/flutter ( 3068): package:flutter/src/material/ink_well.dart 507:14          _InkResponseState._handleTap
I/flutter ( 3068): package:flutter/src/material/ink_well.dart 562:30          _InkResponseState.build.<fn>
I/flutter ( 3068): package:flutter/src/gestures/recognizer.dart 102:24        GestureRecognizer.invokeCallback
I/flutter ( 3068): package:flutter/src/gestures/tap.dart 242:9                TapGestureRecognizer._checkUp
I/flutter ( 3068): package:flutter/src/gestures/tap.dart 175:7                TapGestureRecognizer.handlePrimaryPointer
I/flutter ( 3068): package:flutter/src/gestures/recognizer.dart 315:9         PrimaryPointerGestureRecognizer.handleEvent
I/flutter ( 3068): package:flutter/src/gestures/pointer_router.dart 73:12     PointerRouter._dispatch
I/flutter ( 3068): package:flutter/src/gestures/pointer_router.dart 101:11    PointerRouter.route
I/flutter ( 3068): package:flutter/src/gestures/binding.dart 180:19           _WidgetsFlutterBinding&BindingBase&GestureBinding.handleEvent
I/flutter ( 3068): package:flutter/src/gestures/binding.dart 158:22           _WidgetsFlutterBinding&BindingBase&GestureBinding.dispatchEvent
I/flutter ( 3068): package:flutter/src/gestures/binding.dart 138:7            _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerEvent
I/flutter ( 3068): package:flutter/src/gestures/binding.dart 101:7            _WidgetsFlutterBinding&BindingBase&GestureBinding._flushPointerEventQueue
I/flutter ( 3068): package:flutter/src/gestures/binding.dart 85:7             _WidgetsFlutterBinding&BindingBase&GestureBinding._handlePointerDataPacket
I/flutter ( 3068): dart:async/zone.dart 1136:13                               _rootRunUnary
I/flutter ( 3068): dart:async/zone.dart 1029:19                               _CustomZone.runUnary
I/flutter ( 3068): dart:async/zone.dart 931:7                                 _CustomZone.runUnaryGuarded
I/flutter ( 3068): dart:ui/hooks.dart 170:10                                  _invoke1
I/flutter ( 3068): dart:ui/hooks.dart 122:5                                   _dispatchPointerDataPacket
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flutter_stack_trace的Simple Mode列印

I/flutter ( 3068): PlatformException(error, Attempt to invoke virtual method 'java.lang.String java.lang.Object.toString()' on a null object reference, null)
I/flutter ( 3068): package:fluttertoast/fluttertoast.dart 53:33               Fluttertoast.showToast
I/flutter ( 3068): package:example/ui/login_page.dart 198:18                  _LoginPageState.showAccountNameEmpty
I/flutter ( 3068): package:example/presenter/login_presenter.dart 19:12       LoginPresenter.login
I/flutter ( 3068): package:example/ui/login_page.dart 135:31                  _LoginPageState.buildBody.<fn>
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用法

import 'package:flutter_stack_trace/flutter_stack_trace.dart';

//default simple mode
void main() => FlutterChain.capture(
      () {
        runApp(MyApp());
      },
    );

//just print in debug mode
//isShowTime default true
FlutterChain.print("test",isShowTime: false);

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