android - Flutter 本地通知导致崩溃，仅在 APK 版本中

Question

我在 1.9 更新之前让这个应用程序工作，然后必须通过将 gradle 版本从 3.2.1 切换到 3.3.1 来解决构建失败

从那以后，对本地通知插件的任何非配置调用都会遇到此堆栈跟踪:

E/flutter (22738): [ERROR:flutter/shell/platform/android/platform_view_android_jni.cc(39)] java.lang.AssertionError: java.lang.NoSuchFieldException: Drawable
E/flutter (22738):      at c.a.a.b.a.ja$a.<init>(:12)
E/flutter (22738):      at c.a.a.b.a.V.a(:5)
E/flutter (22738):      at c.a.a.p.a(:18)
E/flutter (22738):      at c.a.a.b.a.p.a(:21)
E/flutter (22738):      at c.a.a.b.a.p.a(:37)
E/flutter (22738):      at c.a.a.b.a.p.a(:17)
E/flutter (22738):      at c.a.a.p.a(:18)
E/flutter (22738):      at c.a.a.b.a.c.a(:5)
E/flutter (22738):      at c.a.a.p.a(:18)
E/flutter (22738):      at c.a.a.p.a(:96)
E/flutter (22738):      at c.a.a.p.a(:86)
E/flutter (22738):      at c.a.a.p.a(:84)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.e(:7)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.a(:49)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.a(:157)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.b(:40)
E/flutter (22738):      at com.dexterous.flutterlocalnotifications.d.a(:132)
E/flutter (22738):      at d.a.b.a.m$a.a(:2)
E/flutter (22738):      at io.flutter.embedding.engine.a.c.a(:14)
E/flutter (22738):      at io.flutter.embedding.engine.FlutterJNI.handlePlatformMessage(:2)
E/flutter (22738):      at android.os.MessageQueue.nativePollOnce(Native Method)
E/flutter (22738):      at android.os.MessageQueue.next(MessageQueue.java:326)
E/flutter (22738):      at android.os.Looper.loop(Looper.java:160)
E/flutter (22738):      at android.app.ActivityThread.main(ActivityThread.java:6762)
E/flutter (22738):      at java.lang.reflect.Method.invoke(Native Method)
E/flutter (22738):      at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
E/flutter (22738):      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
E/flutter (22738): Caused by: java.lang.NoSuchFieldException: Drawable
E/flutter (22738):      at java.lang.Class.getField(Class.java:1601)
E/flutter (22738):      at c.a.a.b.a.ja$a.<init>(:6)
E/flutter (22738):      ... 26 more
E/flutter (22738): 
F/flutter (22738): [FATAL:flutter/shell/platform/android/platform_view_android_jni.cc(76)] Check failed: CheckException(env). 

我没有对正在运行的版本中的代码进行任何更改。
用于配置插件的代码在 init 上运行如下

  void inicializarPluginNotificacoes() {
    flutterLocalNotificationsPlugin = new FlutterLocalNotificationsPlugin();
    var initializationSettingsAndroid = new AndroidInitializationSettings('@drawable/app_icon24');
    var initializationSettings = new InitializationSettings(initializationSettingsAndroid, null);
    flutterLocalNotificationsPlugin.initialize(initializationSettings, onSelectNotification: onSelectNotification);
  }

并且对插件的调用是这样的:

  Future marcarNotificacao(int id, int hora, int minuto, String texto, String titulo) async {
    var scheduledNotificationDateTime = new DateTime.now().add(new Duration(hours: hora, minutes: minuto));
    var androidPlatformChannelSpecifics = new AndroidNotificationDetails('ponto_unb', 'Ponto', 'Notificações para o ponto eletrônico');
    NotificationDetails platformChannelSpecifics = new NotificationDetails(androidPlatformChannelSpecifics, null);
    await flutterLocalNotificationsPlugin.cancel(id); // crashes
    await flutterLocalNotificationsPlugin.schedule(id, titulo, texto, scheduledNotificationDateTime, platformChannelSpecifics); // also crashes if the other one is not called first
  }

现在，有趣的是，只有在安装 apk 后才会发生崩溃。在使用 flutter 运行或调试运行的开发构建中，不会发生崩溃。

我尝试过的事情:
- 检查图标，因为消息提到可绘制。如果找不到图标，配置甚至不会运行。

在调用周围使用 try/catch 捕获异常:异常直接通过

检查通知权限，一切都很好，正如我所提到的，代码在更新之前工作

调用是用正确的时间(小时和分钟)进行的，即使它们不是取消调用，仍然会使应用程序崩溃

检查取消对没有预定通知的 id 的调用是否会崩溃，它没有在更新之前工作的版本上

添加重要性、优先级和更改 channel 名称和 ID，没有奏效，此时变得绝望

我觉得我缺少一些资源，有没有办法更全面地了解崩溃？

Answer 1

我遇到了同样的问题，这让我发疯了。它只发生在发布版本上，并且似乎与 AndroidInitializationSettings('app_icon')

flutter_local_notifications Android 集成的文档部分说要添加

-keep class com.dexterous.** { *; }

到/android/app/proguard-rules.pro