当前位置：首页 > article >正文

Flutter中添加崩溃分析

article 2024/11/16 21:28:49

前言

Crashlytics的作用是在移动应用程序发生崩溃时，及时收集崩溃信息并发送给开发人员，以帮助开发人员快速定位和修复问题，从而提高应用程序的稳定性和用户体验

Crashlytics的原理是通过集成到应用程序中的SDK，在应用程序崩溃时收集崩溃信息并在App重启时上传到Crashlytics服务器。SDK会收集崩溃堆栈、设备信息、应用程序版本等信息，并生成一个唯一的崩溃ID。开发人员可以通过Crashlytics的控制台查看和分析崩溃信息，以便更好地理解和解决应用程序崩溃问题。

除了崩溃报告，Crashlytics还提供了其他功能，如实时崩溃报告、堆栈跟踪、用户和设备信息等，以帮助开发人员更好地理解和解决应用程序崩溃问题。

操作步骤

一、Flutter集成Firebase框架

参考：Flutter集成Firebase框架

二、在Firebase网页端查看项目

访问https://console.firebase.google.com/u/0/，点击自己的项目后再点击左侧的发布与监控，然后再点击Crashlytics，即可看到崩溃收集界面

三、在代码中添加crashlytics

在代码功收集错误并上传到云端

安装firebase_crashlytics插件

flutter pub add firebase_crashlytics
# ios的额外步骤
cd ios
#如果下面指令报错，则删除Podfile.lock文件再执行下面指令
pod install --repo-update

使用测试的main.dart

import 'dart:async';
import 'dart:io';

import 'package:firebase_core/firebase_core.dart';
import 'package:firebase_crashlytics/firebase_crashlytics.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

import 'firebase_options.dart';

// Toggle this to cause an async error to be thrown during initialization
// and to test that runZonedGuarded() catches the error
const _kShouldTestAsyncErrorOnInit = false;

// Toggle this for testing Crashlytics in your app locally.
const _kTestingCrashlytics = true;

Future<void> main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
  const fatalError = true;
  // Non-async exceptions
  FlutterError.onError = (errorDetails) {
    if (fatalError) {
      // If you want to record a "fatal" exception
      FirebaseCrashlytics.instance.recordFlutterFatalError(errorDetails);
      // ignore: dead_code
    } else {
      // If you want to record a "non-fatal" exception
      FirebaseCrashlytics.instance.recordFlutterError(errorDetails);
    }
  };
  // Async exceptions
  PlatformDispatcher.instance.onError = (error, stack) {
    if (fatalError) {
      // If you want to record a "fatal" exception
      FirebaseCrashlytics.instance.recordError(error, stack, fatal: true);
      // ignore: dead_code
    } else {
      // If you want to record a "non-fatal" exception
      FirebaseCrashlytics.instance.recordError(error, stack);
    }
    return true;
  };
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  MyApp({Key? key}) : super(key: key);
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late Future<void> _initializeFlutterFireFuture;

  Future<void> _testAsyncErrorOnInit() async {
    Future<void>.delayed(const Duration(seconds: 2), () {
      final List<int> list = <int>[];
      print(list[100]);
    });
  }

  // Define an async function to initialize FlutterFire
  Future<void> _initializeFlutterFire() async {
    if (_kTestingCrashlytics) {
      // Force enable crashlytics collection enabled if we're testing it.
      await FirebaseCrashlytics.instance.setCrashlyticsCollectionEnabled(true);
    } else {
      // Else only enable it in non-debug builds.
      // You could additionally extend this to allow users to opt-in.
      await FirebaseCrashlytics.instance
          .setCrashlyticsCollectionEnabled(!kDebugMode);
    }

    if (_kShouldTestAsyncErrorOnInit) {
      await _testAsyncErrorOnInit();
    }
  }

  @override
  void initState() {
    super.initState();
    _initializeFlutterFireFuture = _initializeFlutterFire();
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Crashlytics example app'),
        ),
        body: FutureBuilder(
          future: _initializeFlutterFireFuture,
          builder: (context, snapshot) {
            switch (snapshot.connectionState) {
              case ConnectionState.done:
                if (snapshot.hasError) {
                  return Center(
                    child: Text('Error: ${snapshot.error}'),
                  );
                }
                return Center(
                  child: Column(
                    children: <Widget>[
                      ElevatedButton(
                        onPressed: () {
                          FirebaseCrashlytics.instance
                              .setCustomKey('example', 'flutterfire');
                          ScaffoldMessenger.of(context)
                              .showSnackBar(const SnackBar(
                            content: Text(
                                'Custom Key "example: flutterfire" has been set \n'
                                'Key will appear in Firebase Console once an error has been reported.'),
                            duration: Duration(seconds: 5),
                          ));
                        },
                        child: const Text('Key'),
                      ),
                      ElevatedButton(
                        onPressed: () {
                          FirebaseCrashlytics.instance
                              .log('This is a log example');
                          ScaffoldMessenger.of(context)
                              .showSnackBar(const SnackBar(
                            content: Text(
                                'The message "This is a log example" has been logged \n'
                                'Message will appear in Firebase Console once an error has been reported.'),
                            duration: Duration(seconds: 5),
                          ));
                        },
                        child: const Text('Log'),
                      ),
                      ElevatedButton(
                        onPressed: () async {
                          ScaffoldMessenger.of(context)
                              .showSnackBar(const SnackBar(
                            content: Text('App will crash is 5 seconds \n'
                                'Please reopen to send data to Crashlytics'),
                            duration: Duration(seconds: 5),
                          ));

                          // Delay crash for 5 seconds
                          sleep(const Duration(seconds: 5));

                          // Use FirebaseCrashlytics to throw an error. Use this for
                          // confirmation that errors are being correctly reported.
                          FirebaseCrashlytics.instance.crash();
                        },
                        child: const Text('Crash'),
                      ),
                      ElevatedButton(
                        onPressed: () {
                          ScaffoldMessenger.of(context)
                              .showSnackBar(const SnackBar(
                            content: Text(
                                'Thrown error has been caught and sent to Crashlytics.'),
                            duration: Duration(seconds: 5),
                          ));

                          // Example of thrown error, it will be caught and sent to
                          // Crashlytics.
                          throw StateError('Uncaught error thrown by app');
                        },
                        child: const Text('Throw Error'),
                      ),
                      ElevatedButton(
                        onPressed: () {
                          ScaffoldMessenger.of(context)
                              .showSnackBar(const SnackBar(
                            content: Text(
                                'Uncaught Exception that is handled by second parameter of runZonedGuarded.'),
                            duration: Duration(seconds: 5),
                          ));

                          // Example of an exception that does not get caught
                          // by `FlutterError.onError` but is caught by
                          // `runZonedGuarded`.
                          runZonedGuarded(() {
                            Future<void>.delayed(const Duration(seconds: 2),
                                () {
                              final List<int> list = <int>[];
                              print(list[100]);
                            });
                          }, FirebaseCrashlytics.instance.recordError);
                        },
                        child: const Text('Async out of bounds'),
                      ),
                      ElevatedButton(
                        onPressed: () async {
                          try {
                            ScaffoldMessenger.of(context)
                                .showSnackBar(const SnackBar(
                              content: Text('Recorded Error'),
                              duration: Duration(seconds: 5),
                            ));
                            throw Error();
                          } catch (e, s) {
                            // "reason" will append the word "thrown" in the
                            // Crashlytics console.
                            await FirebaseCrashlytics.instance.recordError(e, s,
                                reason: 'as an example of fatal error',
                                fatal: true);
                          }
                        },
                        child: const Text('Record Fatal Error'),
                      ),
                      ElevatedButton(
                        onPressed: () async {
                          try {
                            ScaffoldMessenger.of(context)
                                .showSnackBar(const SnackBar(
                              content: Text('Recorded Error'),
                              duration: Duration(seconds: 5),
                            ));
                            throw Error();
                          } catch (e, s) {
                            // "reason" will append the word "thrown" in the
                            // Crashlytics console.
                            await FirebaseCrashlytics.instance.recordError(e, s,
                                reason: 'as an example of non-fatal error');
                          }
                        },
                        child: const Text('Record Non-Fatal Error'),
                      ),
                    ],
                  ),
                );
              default:
                return const Center(child: Text('Loading'));
            }
          },
        ),
      ),
    );
  }
}

添加后运行程序到手机中，项目起来后我们在回到Crashlytics控制台，就可以看到已经添加成功了

写一段崩溃或者错误代码，执行后重启App（热更新没有用），然后等待一段时间Crashlytics控制台就会显示错误内容了

此时，iOS的崩溃收集中能会出现请上传 1 个 dSYM 文件以处理崩溃问题。这就需要再进行以下额外步骤了

用Xcode打开项目，点击Runner——>TARGETS——>Runner——>Build Phases中最后一项是否为Run Script，且shell中是否有$PODS_ROOT/FirebaseCrashlytics/upload-symbols 如果有则查看内容和下方步骤中的内容是否一致。如果没有则按照下方步骤添加

在 Firebase 控制台中，前往 settings > 项目设置。向下滚动到“您的应用”卡片，然后点击您的 Firebase Apple 应用以查看该应用的信息，包括其应用 ID，记住这个应用ID，后面能用到

点击+号然后点击New Run Script Phase

在shell下方的输入框中输入以下内容，将1:444101146525:ios:3142748fc11e74b7192174替换你自己的应用ID

$PODS_ROOT/FirebaseCrashlytics/run
$PODS_ROOT/FirebaseCrashlytics/upload-symbols --build-phase --validate -ai 1:444101146525:ios:3142748fc11e74b7192174 -- $DWARF_DSYM_FOLDER_PATH/App.framework.dSYM

然后在Input Files中添加以下内容

${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}
${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}/Contents/Resources/DWARF/${PRODUCT_NAME}
${DWARF_DSYM_FOLDER_PATH}/${DWARF_DSYM_FILE_NAME}/Contents/Info.plist
$(TARGET_BUILD_DIR)/$(UNLOCALIZED_RESOURCES_FOLDER_PATH)/GoogleService-Info.plist
$(TARGET_BUILD_DIR)/$(EXECUTABLE_PATH)

在ios目录下执行

pod install --repo-update

重新运行iOS程序，执行崩溃代码后再次运行iOS程序。等待一会后刷新崩溃收集后台既可以看到问题没有了

至此所有的配置都完成了，修改回自己的main.dart函数并添加以下内容

void main() async {
  //用于确保Flutter的Widgets绑定已经初始化。
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp(
    options: DefaultFirebaseOptions.currentPlatform,
  );
 const fatalError = true;
  // Non-async exceptions
  FlutterError.onError = (errorDetails) {
    if (fatalError) {
      // If you want to record a "fatal" exception
      FirebaseCrashlytics.instance.recordFlutterFatalError(errorDetails);
      // ignore: dead_code
    } else {
      // If you want to record a "non-fatal" exception
      FirebaseCrashlytics.instance.recordFlutterError(errorDetails);
    }
  };
  // Async exceptions
  PlatformDispatcher.instance.onError = (error, stack) {
    if (fatalError) {
      // If you want to record a "fatal" exception
      FirebaseCrashlytics.instance.recordError(error, stack, fatal: true);
      // ignore: dead_code
    } else {
      // If you want to record a "non-fatal" exception
      FirebaseCrashlytics.instance.recordError(error, stack);
    }
    return true;
  };
 // 如果有其他的初始化内容在这里添加即可
  runApp(const MyApp());
}

查看全文

http://www.kler.cn/a/292336.html