iOS 上的 Flutter 插件抛出错误“线程 1：EXC_BAD_ACCESS”

Posted 2023-02-23

【中文标题】iOS 上的 Flutter 插件抛出错误“线程 1：EXC_BAD_ACCESS”

【英文标题】：Flutter Plugin Throwing Error "Thread 1: EXC_BAD_ACCESS" on iOS

【发布时间】：2021-05-19 12:38:42

【问题描述】：

我一直在尝试在我的 Flutter 应用程序中使用位于 https://pub.dev/packages/livechatt 的插件“livechat”。让它在 android 版本中运行没有问题，但在 ios 上，它每次都以相同的方式失败。

我在pubspec.yaml 中导入了这个包，就像我使用其他插件一样。从 Android Studio 在 iOS 模拟器中运行应用程序时，构建成功，但应用程序在启动后立即崩溃。从 Xcode 运行应用程序时，构建成功，但应用程序在启动启动屏幕上冻结。

注意：就目前而言，该插件在 iOS 中的依赖项确实存在错误，因此那些测试它的人需要在livechatt.podspec 中将目标操作系统从 iOS 9.0 更改为 iOS 11.0，然后运行 ​​@ 987654324@在项目的iOS目录中同步更改

Xcode 然后显示以下错误：

错误 4 Thread 1: EXC_BAD_ACCESS (code=2, address=0x7ffee7ce5ff8) in ios\.symlinks\plugins\livechatt\ios\classes\LiveChatPlugin.m

#import "LivechatPlugin.h"
#if __has_include(<livechat/livechat-Swift.h>)
#import <livechat/livechat-Swift.h>
#else
// Support project import fallback if the generated compatibility header
// is not copied when this plugin is created as a library.
// https://forums.swift.org/t/swift-static-libraries-dont-copy-generated-objective-c-header/19816
#import "livechat-Swift.h"
#endif

@implementation LivechatPlugin
+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar  <-- ERROR HERE
    [LivechatPlugin registerWithRegistrar:registrar];

@end

错误 5-1000、173400-174359 Thread 1: EXC_BAD_ACCESS (code=2, address=0x7ffee7ce5ff8) in ios\.symlinks\plugins\livechatt\ios\classes\LiveChatPlugin.m

#import "LivechatPlugin.h"
#if __has_include(<livechat/livechat-Swift.h>)
#import <livechat/livechat-Swift.h>
#else
// Support project import fallback if the generated compatibility header
// is not copied when this plugin is created as a library.
// https://forums.swift.org/t/swift-static-libraries-dont-copy-generated-objective-c-header/19816
#import "livechat-Swift.h"
#endif

@implementation LivechatPlugin
+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar 
    [LivechatPlugin registerWithRegistrar:registrar]; <-- ERROR HERE

@end

Runner\GeneratedPluginRegistrant.m 中的错误 174360 Thread 1: EXC_BAD_ACCESS (code=2, address=0x7ffee7ce5ff8)

/* previous code ommitted for brevity */
@implementation GeneratedPluginRegistrant

+ (void)registerWithRegistry:(NSObject<FlutterPluginRegistry>*)registry 
  [AppAvailability registerWithRegistrar:[registry registrarForPlugin:@"AppAvailability"]];
  [FlutterLocalNotificationsPlugin registerWithRegistrar:[registry registrarForPlugin:@"FlutterLocalNotificationsPlugin"]];
  [FLTGoogleMapsPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTGoogleMapsPlugin"]];
  [LivechatPlugin registerWithRegistrar:[registry registrarForPlugin:@"LivechatPlugin"]]; <-- ERROR HERE
  [LocationPlugin registerWithRegistrar:[registry registrarForPlugin:@"LocationPlugin"]];
  [MsalMobilePlugin registerWithRegistrar:[registry registrarForPlugin:@"MsalMobilePlugin"]];
  [FLTPathProviderPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTPathProviderPlugin"]];
  [FLTSharedPreferencesPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTSharedPreferencesPlugin"]];
  [SqflitePlugin registerWithRegistrar:[registry registrarForPlugin:@"SqflitePlugin"]];
  [FLTURLLauncherPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTURLLauncherPlugin"]];
  [FLTWebViewFlutterPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTWebViewFlutterPlugin"]];


@end

我能否帮助诊断在这些地方引发此错误的原因，以及为什么它只影响 livechat 插件？谢谢！

【参考方案1】：

我是上述包的作者。该问题已在最新版本中得到修复。请更新您的 pubspec.yaml 中的包

dependencies:
  livechatt: "^1.1.0"