android - BroadcastReceiver 试图在无序广播期间返回结果 Weird Error

Question

即使我没有发送推送通知，首次启动应用程序时也会出现此错误:

 BroadcastReceiver trying to return result during a non-ordered broadcast
        java.lang.RuntimeException: BroadcastReceiver trying to return result during a non-ordered broadcast
                at android.content.BroadcastReceiver.checkSynchronousHint(BroadcastReceiver.java:799)
                at android.content.BroadcastReceiver.setResultCode(BroadcastReceiver.java:565)
                at com.pushnotification.GcmBroadcastReceiver.onReceive(GcmBroadcastReceiver.java:17)
                at android.app.ActivityThread.handleReceiver(ActivityThread.java:2712)
                at android.app.ActivityThread.access$1700(ActivityThread.java:144)
                at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1449)
                at android.os.Handler.dispatchMessage(Handler.java:102)
                at android.os.Looper.loop(Looper.java:155)
                at android.app.ActivityThread.main(ActivityThread.java:5696)
                at java.lang.reflect.Method.invoke(Native Method)
                at java.lang.reflect.Method.invoke(Method.java:372)
                at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1028)
                at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)

BroadcastReceiver 的代码:

public class GcmBroadcastReceiver extends WakefulBroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        // Explicitly specify that GcmIntentService will handle the intent.
        ComponentName comp = new ComponentName(context.getPackageName(),
                GcmIntentService.class.getName());

        // Start the service, keeping the device awake while it is launching.
        startWakefulService(context, (intent.setComponent(comp)));

        /* the crash is pointing to this line */
        setResultCode(Activity.RESULT_OK);
    }
}

在我在 IntentService 中实现以下代码后，错误开始出现(也没有在应用程序启动时调用)。但也不是每次，I.E.从 Android Studio 卸载并运行应用程序后，有时会发生错误，有时不会。

BroadcastReceiver receiver;
public void DownloadListener(final String ZipFile) {
  receiver = new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
      String action = intent.getAction();

      if (DownloadManager.ACTION_DOWNLOAD_COMPLETE.equals(action)) {
        long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, 0);

        DownloadManager.Query query = new DownloadManager.Query();
        query.setFilterById(downloadReference);
        Cursor c = downloadManager.query(query);

        if (c.moveToFirst()) {
          int columnIndex = c.getColumnIndex(DownloadManager.COLUMN_STATUS);
          if (DownloadManager.STATUS_SUCCESSFUL == c.getInt(columnIndex)) {
            DismissProgressDialog();
            ShowProgress("Almost Done", "Unzipping And Installing Database", pd.STYLE_SPINNER);
          }
        }
      }
    }
  };

  context.registerReceiver(receiver, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));
}

在 list 中:

<receiver
  android:name="com.pushnotification.GcmBroadcastReceiver"
  android:permission="com.google.android.c2dm.permission.SEND" >
  <intent-filter>
    <action android:name="com.google.android.c2dm.intent.RECEIVE" />
    <category android:name="com.geovision.ffmsnativeprototype" />
  </intent-filter>
</receiver>

<service android:name=".WebServiceCommunication.SystemDatabaseService" />

按照 another question 的答案建议注释掉 setResultCode(Activity.RESULT_OK); 行后推送通知的 IntentService 收到了包含此内容的通知

From-google.com/iid-Title-null-Message-null-ExtraData-null

我的情况与Weird push message received on app start相同

Answer 1

根据答案https://stackoverflow.com/a/30508934/1950784

这是一个与 google 相关的功能，不是什么大问题，可以通过编程方式进行过滤。

@Override
    protected void onHandleIntent(Intent intent)     //RECEIVE THE PUSHNOTIFICATION
    {

        Bundle extras = intent.getExtras();
        GoogleCloudMessaging gcm = GoogleCloudMessaging.getInstance(this);
        // The getMessageType() intent parameter must be the intent you received
        // in your BroadcastReceiver.
        String messageType = gcm.getMessageType(intent);

        if (!extras.isEmpty()) {  // has effect of unparcelling Bundle
            /*
             * Filter messages based on message type. Since it is likely that GCM
             * will be extended in the future with new message types, just ignore
             * any message types you're not interested in, or that you don't
             * recognize.
             */
            if (GoogleCloudMessaging.
                    MESSAGE_TYPE_SEND_ERROR.equals(messageType)) {
                //   sendNotification("Send error: " + extras.toString());
            } else if (GoogleCloudMessaging.
                    MESSAGE_TYPE_DELETED.equals(messageType)) {
                //      sendNotification("Deleted messages on server: " +
                //     extras.toString());
                // If it's a regular GCM message, do some work.
            } else if (GoogleCloudMessaging.
                    MESSAGE_TYPE_MESSAGE.equals(messageType)) {


                Log.i(TAG, "PUSHNOTIFICATION RECEIVED @ " + SystemClock.elapsedRealtime());


                extraData=extras.getString("extraData");
                from=extras.getString("from");
                title=extras.getString("title");
                message=extras.getString("message");

                Log.i(TAG, "Received: " + extras.toString()+" M"+messageType);




 if(title!=null) {

                    if(from.equals("google.com/iid"))
                    {
                        //related to google ... DO NOT PERFORM ANY ACTION
                    }
                    else { 
                      //HANDLE THE RECEIVED NOTIFICATION
                        }