Question

我正试图允许我的flutter应用程序在后台处理通知。我正在使用带有onesignal的推式通知，当我滑动我的应用程序并关闭它时，它不再调用onReceiveHandler。所以我读了有关NotificationExtenderService的内容： https://documentation.onesignal.com/docs/service-extensions#section-notification-extender-service

因此，我首先在MainActivity.java旁边的android> app> main> java> ..> NotificationsService.java中创建了一个类

并将其添加到android> app>主文件夹中的AndroidMainfest.xml中：

<service
   android:name=".YOUR_CLASS_NAME"
   android:permission="android.permission.BIND_JOB_SERVICE"
   android:exported="false">
   <intent-filter>
      <action android:name="com.onesignal.NotificationExtender" />
   </intent-filter>
</service>

因此，在不进行任何清理之后，我没有做任何其他工作，而是尝试运行我的应用程序以查看它是否未显示任何错误。

但是似乎无法识别类方法和东西：

import com.onesignal.OSNotificationPayload;
import com.onesignal.NotificationExtenderService;

public class NotificationExtenderBareBonesExample extends NotificationExtenderService {
   @Override
   protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
      // Read properties from result.

      // Return true to stop the notification from displaying.
      return false;
   }
}

显示以下错误：

error: cannot find symbol
 protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
                                            ^
  symbol:   class OSNotificationReceivedResult
  location: class OneSignalSilentNotificationHandler
1 error

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 8s
Finished with error: Gradle task assembleDebug failed with exit code 1

那么问题出在哪里，或者这是解决问题的错误方法，在这种情况下，我还必须创建一个方法通道来使flutter和本机代码进行通信。

Answer 1

在AndroidMainfest.xml中的内部：

<service
    android:name=".OneSignalNotificationExtender"
    android:permission="android.permission.BIND_JOB_SERVICE"
    android:exported="false">
    <intent-filter>
        <action android:name="com.onesignal.NotificationExtender" />
    </intent-filter>
</service>

在android> app> main> java> ..>内部我在MainActivity.java旁边创建OneSignalNotificationExtender.java

OneSignalNotificationExtender.java：

import com.onesignal.OSNotificationPayload;
import com.onesignal.OSNotificationReceivedResult;
import com.onesignal.NotificationExtenderService;

public class OneSignalNotificationExtender extends NotificationExtenderService  {
   @Override
   protected boolean onNotificationProcessing(OSNotificationReceivedResult receivedResult) {
      if (receivedResult != null) {




      } 

      // Returning true tells the OneSignal SDK you have processed the notification and not to display it's own.
      return false;
   }

}

在背景中带有OneSignal PushNotifications的颤振

1 个答案: