Flutter 在 android 上初始化 OneSignal 时应用程序崩溃 13

Question

当尝试为OneSignal初始化或设置 AppId id 时，我的应用程序崩溃/终止

flutter 医生

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我使用的是OneSignal的最新版本

 onesignal_flutter: ^3.5.0

并使用最后的 compileSdkVersion

compileSdkVersion 33

这是我的 flutter 代码

static void _initOneSignal() async {
    // The promptForPushNotificationsWithUserResponse function will show the iOS push notification prompt. We recommend removing the following code and instead using an In-App Message to prompt for notification permission
    await OneSignal.shared
        .promptUserForPushNotificationPermission(fallbackToSettings: true);

    //Remove this method to stop OneSignal Debugging
    if (kDebugMode)
      OneSignal.shared.setLogLevel(OSLogLevel.verbose, OSLogLevel.none);

    OneSignal.shared.setAppId("${AppConstant.oneSignalId}");

// The promptForPushNotificationsWithUserResponse function will show the iOS push notification prompt. We recommend removing the following code and instead using an In-App Message to prompt for notification permission
    OneSignal.shared.promptUserForPushNotificationPermission().then((accepted) {
      debugPrint("Accepted permission: $accepted");
    });
  }

注意：在不调用 _initOneSignal() function 的情况下运行应用程序时，应用程序正常工作

当尝试在 android 13 上运行应用程序时抛出此错误并关闭应用程序

E/AndroidRuntime(11728): FATAL EXCEPTION: main
E/AndroidRuntime(11728): Process: com.band.amazfitband7, PID: 11728
E/AndroidRuntime(11728): java.lang.ExceptionInInitializerError
E/AndroidRuntime(11728):    at com.onesignal.OneSignal.promptForPushNotifications(OneSignal.java:2864)
E/AndroidRuntime(11728):    at com.onesignal.flutter.OneSignalPlugin.promptPermission(OneSignalPlugin.java:282)
E/AndroidRuntime(11728):    at com.onesignal.flutter.OneSignalPlugin.onMethodCall(OneSignalPlugin.java:158)
E/AndroidRuntime(11728):    at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:262)
E/AndroidRuntime(11728):    at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
E/AndroidRuntime(11728):    at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
E/AndroidRuntime(11728):    at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
E/AndroidRuntime(11728):    at android.os.Handler.handleCallback(Handler.java:942)
E/AndroidRuntime(11728):    at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime(11728):    at android.os.Looper.loopOnce(Looper.java:201)
E/AndroidRuntime(11728):    at android.os.Looper.loop(Looper.java:288)
E/AndroidRuntime(11728):    at android.app.ActivityThread.main(ActivityThread.java:7872)
E/AndroidRuntime(11728):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(11728):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:548)
E/AndroidRuntime(11728):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:936)
E/AndroidRuntime(11728): Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String android.content.Context.getPackageName()' on a null object reference
E/AndroidRuntime(11728):    at com.onesignal.OSUtils.getTargetSdkVersion(OSUtils.java:490)
E/AndroidRuntime(11728):    at com.onesignal.NotificationPermissionController.<clinit>(NotificationPermissionController.kt:48)

Answer 1

如果您在初始化期间按以下顺序调用方法，应用程序将崩溃：

OneSignal.shared.setLogLevel(config.logLevel, config.visualLevel);
OneSignal.shared.promptUserForPushNotificationPermission(fallbackToSettings: true);
OneSignal.shared.setAppId(config.appId);

方法调用必须明确按此顺序才能解决问题：

OneSignal.shared.setLogLevel(config.logLevel, config.visualLevel);
OneSignal.shared.setAppId(config.appId);
OneSignal.shared.promptUserForPushNotificationPermission(fallbackToSettings: true);