Delphi Android Firebase Cloud Messaging：收到通知时应用程序崩溃答案

【问题标题】：Delphi Android Firebase Cloud Messaging : Application crashes on notification receiveDelphi Android Firebase Cloud Messaging：收到通知时应用程序崩溃
【发布时间】：2020-06-08 14:39:47
【问题描述】：

我使用 Delphi Rio 10.3.2。我按照本教程进行操作：http://docwiki.embarcadero.com/RADStudio/Rio/en/Firebase_Android_Support

所以在主窗体中，我添加了 OnServiceConnectionChange、OnReceiveNotificationEvent。

OnServiceConnectionChange 只是使用 logcat 给我设备令牌。

procedure TfAccueil.OnServiceConnectionChange(Sender: TObject;PushChanges: TPushService.TChanges);
     var
       PushService: TPushService;
       token : string;
       url : string;
     begin
       PushService := TPushServiceManager.Instance.GetServiceByName(TPushService.TServiceNames.GCM);
       if TPushService.TChange.DeviceToken in PushChanges then begin
          token := PushService.DeviceTokenValue[TPushService.TDeviceTokenNames.DeviceToken];
          if FDeviceToken <> token then begin
            FDeviceToken := token;

            fData.Log('#FCM','FireBase Device Token: ' + FDeviceToken);

          end;
       end;
       if (TPushService.TChange.Status in PushChanges) and (PushService.Status = TPushService.TStatus.StartupError) then begin
           fData.Log('#FCM','Error: ' + PushService.StartupError);
       end;
     end;

获得设备令牌后，我使用 Postman 测试通知（其中 XXX 是设备令牌）：

 {
 "registration_ids" : ["XXX"],
 "data" : {
     "key_1" : "Value for key_1",
     "key_2" : "Value for key_2"
 }
}

在 OnReceiveNotificationEvent 中，我收到了我发送的内容。

procedure TfAccueil.OnReceiveNotificationEvent(Sender: TObject; const ServiceNotification: TPushServiceNotification);
begin
        fData.Log('#FCM','-----------------------------------------');
        fData.Log('#FCM','DataKey = ' + ServiceNotification.DataKey);
        fData.Log('#FCM','Json = ' + ServiceNotification.Json.ToString);
        fData.Log('#FCM','DataObject = ' + ServiceNotification.DataObject.ToString);
        fData.Log('#FCM','---------------------------------------');
end;

收到的数据显示在 logcat 中，我看到“key_1”和“key_2”的值。

PostMan 显示正确的响应：

{
    "multicast_id": 1194574639982246633,
    "success": 1,
    "failure": 0,
    "canonical_ids": 0,
    "results": [
        {
            "message_id": "0:1591625227805806%7de42328f9fd7ecd"
        }
    ]
}

但是，应用程序崩溃了，它停止响应，我在 logcat 中得到了这个：

06-08 16:01:55.461: I/info(19398): -----------------------------------------
06-08 16:01:55.461: W/System.err(19398): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
06-08 16:01:55.461: I/info(19398): DataKey = fcm
06-08 16:01:55.461: I/info(19398): Json = {"google.delivered_priority":"normal","google.sent_time":"1591624915033","google.ttl":"2419200","google.original_priority":"normal","from":"697029724431","key_1":"Value for key_1","key_2":"Value for key_2","google.message_id":"0:1591624915047510%7de42328f9fd7ecd","google.c.sender.id":"697029724431"}
06-08 16:01:55.461: I/info(19398): DataObject = {"google.delivered_priority":"normal","google.sent_time":"1591624915033","google.ttl":"2419200","google.original_priority":"normal","from":"697029724431","key_1":"Value for key_1","key_2":"Value for key_2","google.message_id":"0:1591624915047510%7de42328f9fd7ecd","google.c.sender.id":"697029724431"}
06-08 16:01:55.461: I/info(19398): ---------------------------------------
06-08 16:01:55.462: W/System.err(19398):    at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6898)
06-08 16:01:55.462: W/System.err(19398):    at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:1048)
06-08 16:01:55.462: W/System.err(19398):    at android.view.View.requestLayout(View.java:19785)
06-08 16:01:55.462: W/System.err(19398):    at android.view.View.requestLayout(View.java:19785)
06-08 16:01:55.462: W/System.err(19398):    at android.view.View.requestLayout(View.java:19785)
06-08 16:01:55.462: W/System.err(19398):    at android.view.View.requestLayout(View.java:19785)
06-08 16:01:55.462: W/System.err(19398):    at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:360)
06-08 16:01:55.462: W/System.err(19398):    at android.view.View.setFlags(View.java:11482)
06-08 16:01:55.462: W/System.err(19398):    at android.view.View.setVisibility(View.java:8069)
06-08 16:01:55.462: W/System.err(19398):    at com.embarcadero.rtl.ProxyInterface.dispatchToNative(Native Method)
06-08 16:01:55.462: W/System.err(19398):    at com.embarcadero.rtl.ProxyInterface.invoke(ProxyInterface.java:21)
06-08 16:01:55.462: W/System.err(19398):    at java.lang.reflect.Proxy.invoke(Proxy.java:813)
06-08 16:01:55.462: W/System.err(19398):    at $Proxy8.onNotificationReceived(Unknown Source)
06-08 16:01:55.462: W/System.err(19398):    at com.embarcadero.firebase.messaging.ProxyFirebaseMessagingService.onMessageReceived(ProxyFirebaseMessagingService.java:35)
06-08 16:01:55.462: W/System.err(19398):    at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source)
06-08 16:01:55.462: W/System.err(19398):    at com.google.firebase.iid.zzc.run(Unknown Source)
06-08 16:01:55.462: W/System.err(19398):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
06-08 16:01:55.463: W/System.err(19398):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
06-08 16:01:55.463: W/System.err(19398):    at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source)
06-08 16:01:55.463: W/System.err(19398):    at java.lang.Thread.run(Thread.java:761)
06-08 16:01:55.478: W/System.err(19398): java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare()
06-08 16:01:55.478: W/System.err(19398):    at android.os.Handler.<init>(Handler.java:200)
06-08 16:01:55.478: W/System.err(19398):    at android.os.Handler.<init>(Handler.java:114)
06-08 16:01:55.478: W/System.err(19398):    at android.view.SurfaceView$1.<init>(SurfaceView.java:131)
06-08 16:01:55.478: W/System.err(19398):    at android.view.SurfaceView.<init>(SurfaceView.java:131)
06-08 16:01:55.478: W/System.err(19398):    at android.view.SurfaceView.<init>(SurfaceView.java:207)
06-08 16:01:55.478: W/System.err(19398):    at android.view.SurfaceView.<init>(SurfaceView.java:203)
06-08 16:01:55.478: W/System.err(19398):    at android.view.SurfaceView.<init>(SurfaceView.java:199)
06-08 16:01:55.478: W/System.err(19398):    at com.embarcadero.firemonkey.form.FormView.<init>(FormView.java:16)
06-08 16:01:55.478: W/System.err(19398):    at com.embarcadero.rtl.ProxyInterface.dispatchToNative(Native Method)
06-08 16:01:55.478: W/System.err(19398):    at com.embarcadero.rtl.ProxyInterface.invoke(ProxyInterface.java:21)
06-08 16:01:55.479: W/System.err(19398):    at java.lang.reflect.Proxy.invoke(Proxy.java:813)
06-08 16:01:55.479: W/System.err(19398):    at $Proxy8.onNotificationReceived(Unknown Source)
06-08 16:01:55.479: W/System.err(19398):    at com.embarcadero.firebase.messaging.ProxyFirebaseMessagingService.onMessageReceived(ProxyFirebaseMessagingService.java:35)
06-08 16:01:55.479: W/System.err(19398):    at com.google.firebase.messaging.FirebaseMessagingService.zzd(Unknown Source)
06-08 16:01:55.479: W/System.err(19398):    at com.google.firebase.iid.zzc.run(Unknown Source)
06-08 16:01:55.479: W/System.err(19398):    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
06-08 16:01:55.479: W/System.err(19398):    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
06-08 16:01:55.479: W/System.err(19398):    at com.google.android.gms.common.util.concurrent.zza.run(Unknown Source)
06-08 16:01:55.479: W/System.err(19398):    at java.lang.Thread.run(Thread.java:761)

关键在这里：W/System.err(19398): android.view.ViewRootImpl$CalledFromWrongThreadException: 只有创建视图层次结构的原始线程才能接触它的视图

但我不知道出了什么问题……我错过了什么？我什至不进行任何 UI 更新。

注意我还尝试删除 OnReceiveNotificationEvent 中的所有代码，即所有带有“fData.Log(...)”的行，但我得到相同的结果，相同的 logcat（当然没有我的数据日志）。

【问题讨论】：

标签： android firebase delphi push-notification firebase-cloud-messaging

【解决方案1】：

经过一些研究，该问题是由另一个程序监听来自另一个应用程序的通知并进行一些 UI 更新引起的，这解释了为什么应用程序抱怨线程试图“触摸”视图。


procedure TfData.HandleActivityMessage(const Sender: TObject; const M: TMessage);
begin
    if M is TMessageReceivedNotification then begin
        HandleIntentAction(TMessageReceivedNotification(M).Value);
    end;
end;

function TfData.HandleIntentAction(const Data: JIntent): Boolean;
var bc : string;
begin
    Result := False;
    if Data <> nil then begin
        if Data.hasExtra(StringToJString(bcDatawedgeData)) then begin  //---> I ADDED THIS TEST
            bc := JStringToString(Data.getStringExtra(StringToJString(bcDatawedgeData)));
            result := true;
            bcScan(bc);
        end;
    end;
end;

推送通知也会触发此代码。所以我添加了测试 (Data.hasExtra(StringToJString(bcDatawedgeData))) 以确保在推送通知的情况下不执行代码。

这样就解决了问题。

【讨论】：