Android/Firebase - 在 GCM 事件中解析时间戳时出错 - 时间戳为空
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【中文标题】Android/Firebase - 在 GCM 事件中解析时间戳时出错 - 时间戳为空【英文标题】:Android/Firebase - Error while parsing timestamp in GCM event - Null timestamp 【发布时间】:2018-11-20 14:01:03 【问题描述】:我正在构建一个将接收推送通知的 android 应用。我已经设置了 Firebase Cloud Messaging 并且几乎可以正常工作,这样我就可以将以下有效负载发送到有效令牌并接收通知和数据。
使用网址https://fcm.googleapis.com/fcm/send
"to":"<valid-token>",
"notification":"body":"BODY TEXT","title":"TITLE TEXT","sound":"default",
"data":"message":"This is some data"
我的应用程序正确接收并可以处理它。
唯一的小问题是我在调试中抛出了以下异常:
Error while parsing timestamp in GCM event
java.lang.NumberFormatException: Invalid int: "null"
at java.lang.Integer.invalidInt(Integer.java:138)
...
它不会使应用程序崩溃,只是看起来不整洁。
我尝试将timestamp
项目添加到主要有效负载、通知、数据中,还尝试了诸如time
之类的变体,但似乎无法摆脱异常(我可能会使用谷歌) ,我找不到答案)。
如何传递时间戳以使其停止抱怨?
已编辑:这是我的 onMessageReceived
方法,但我认为异常在它到达之前就被抛出了
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
Log.d(TAG, "From: " + remoteMessage.getFrom());
// Check if message contains a data payload.
if (remoteMessage.getData().size() > 0)
Log.d(TAG, "Message data payload: " + remoteMessage.getData());
//TODO Handle the data
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null)
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
提前致谢, 克里斯
【问题讨论】:
你可以发布 onMessageReceived Methed 代码..... 已更新,但我认为在调用该方法的第一行之前抛出异常 请停止通知负载并重试以及为什么同时使用两者 如果没有通知负载,当应用程序不在前台时不会显示通知。通知的替代方法是什么? 您正在尝试使用 Firebase Cansol? 【参考方案1】:即使notification
显然是受支持的元素(根据 Firebase 网络文档),我可以摆脱异常的唯一方法是完全删除它,并仅使用 data
部分,然后在我的应用创建通知(而不是让 firebase 发出通知)。
我使用这个网站来研究如何提出通知:https://www.androidhive.info/2012/10/android-push-notifications-using-google-cloud-messaging-gcm-php-and-mysql/
我的通知现在如下所示:
$fields = array("to" => "<valid-token>",
"data" => array("data"=>
array(
"message"=>"This is some data",
"title"=>"This is the title",
"is_background"=>false,
"payload"=>array("my-data-item"=>"my-data-value"),
"timestamp"=>date('Y-m-d G:i:s')
)
)
);
...
<curl stuff here>
...
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
我的onMessageReceived
看起来像这样:
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
Log.d(TAG, "From: " + remoteMessage.getFrom());
// Check if message contains a data payload.
if (remoteMessage.getData().size() > 0)
Log.e(TAG, "Data Payload: " + remoteMessage.getData().toString());
try
JSONObject json = new JSONObject(remoteMessage.getData().toString());
handleDataMessage(json);
catch (Exception e)
Log.e(TAG, "Exception: " + e.getMessage());
调用handleDataMessage
,如下所示:
private void handleDataMessage(JSONObject json)
Log.e(TAG, "push json: " + json.toString());
try
JSONObject data = json.getJSONObject("data");
String title = data.getString("title");
String message = data.getString("message");
boolean isBackground = data.getBoolean("is_background");
String timestamp = data.getString("timestamp");
JSONObject payload = data.getJSONObject("payload");
// play notification sound
NotificationUtils notificationUtils = new NotificationUtils(getApplicationContext());
notificationUtils.playNotificationSound();
if (!NotificationUtils.isBackgroundRunning(getApplicationContext()))
// app is in foreground, broadcast the push message
Intent pushNotification = new Intent(ntcAppManager.PUSH_NOTIFICATION);
pushNotification.putExtra("message", message);
LocalBroadcastManager.getInstance(this).sendBroadcast(pushNotification);
else
// app is in background, show the notification in notification tray
Intent resultIntent = new Intent(getApplicationContext(), MainActivity.class);
resultIntent.putExtra("message", message);
showNotificationMessage(getApplicationContext(), title, message, timestamp, resultIntent);
catch (JSONException e)
Log.e(TAG, "Json Exception: " + e.getMessage());
catch (Exception e)
Log.e(TAG, "Exception: " + e.getMessage());
然后调用showNotificationMessage
/**
* Showing notification with text only
*/
private void showNotificationMessage(Context context, String title, String message, String timeStamp, Intent intent)
notificationUtils = new NotificationUtils(context);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
notificationUtils.showNotificationMessage(title, message, timeStamp, intent);
随后notificationUtils.showNotificationMessage
public void showNotificationMessage(String title, String message, String timeStamp, Intent intent)
showNotificationMessage(title, message, timeStamp, intent, null);
public void showNotificationMessage(final String title, final String message, final String timeStamp, Intent intent, String imageUrl)
// Check for empty push message
if (TextUtils.isEmpty(message))
return;
// notification icon
final int icon = R.mipmap.ic_launcher;
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
final PendingIntent resultPendingIntent =
PendingIntent.getActivity(
mContext,
0,
intent,
PendingIntent.FLAG_CANCEL_CURRENT
);
final NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(
mContext);
final Uri alarmSound = Uri.parse(ContentResolver.SCHEME_ANDROID_RESOURCE
+ "://" + mContext.getPackageName() + "/raw/notification");
showSmallNotification(mBuilder, icon, title, message, timeStamp, resultPendingIntent, alarmSound);
playNotificationSound();
private void showSmallNotification(NotificationCompat.Builder mBuilder, int icon, String title, String message, String timeStamp, PendingIntent resultPendingIntent, Uri alarmSound)
NotificationCompat.InboxStyle inboxStyle = new NotificationCompat.InboxStyle();
inboxStyle.addLine(message);
Notification notification;
notification = mBuilder.setSmallIcon(icon).setTicker(title).setWhen(0)
.setAutoCancel(true)
.setContentTitle(title)
.setContentIntent(resultPendingIntent)
.setSound(alarmSound)
.setStyle(inboxStyle)
.setWhen(getTimeMilliSec(timeStamp))
.setSmallIcon(R.mipmap.ic_launcher)
.setLargeIcon(BitmapFactory.decodeResource(mContext.getResources(), icon))
.setContentText(message)
.build();
NotificationManager notificationManager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(ntcAppManager.NOTIFICATION_ID, notification);
更多细节在上面的链接中,它有很多处理,但至少异常消失了,我可以控制通知。
【讨论】:
那个通知格式没有意义,能不能写成JSON? @Gerry,谷歌“php json_encode”。他正在使用它来将 php 数组编码为 json。【参考方案2】:我已将 com.google.firebase:firebase-messaging 更新到 17.3.4 并且问题消失了。
【讨论】:
【参考方案3】:我遇到了同样的错误,我通过向有效负载添加 ttl
值来解决。
"to":"<valid-token>",
"notification":"body":"BODY TEXT","title":"TITLE TEXT","sound":"default",
"data":"message":"This is some data",
"ttl": 3600
【讨论】:
【参考方案4】:我遇到了同样的问题,我刚刚在通知中设置了“body”参数并且错误消失了。
【讨论】:
【参考方案5】:什么对我有用:
不仅升级firebase-messaging
,而且升级所有 Firebase 库到最新版本。在android/app/build.gradle
:
dependencies
implementation "com.google.firebase:firebase-core:16.0.0" // upgraded
implementation "com.google.firebase:firebase-analytics:16.0.0" // upgraded
implementation 'com.google.firebase:firebase-messaging:17.3.4' // upgraded
// ...
implementation "com.google.firebase:firebase-invites:16.0.0" // upgraded
// ...
并非所有的都是 17.x 版本
【讨论】:
【参考方案6】:下面的格式(没有通知正文,也没有任何数组)为我修复了时间戳异常:
"to": "eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee",
"data":
"message": "message",
"title": "hello",
使用http://pushtry.com/ 测试良好
我包含长 'eeee...' 的唯一原因是我的令牌的确切大小。
【讨论】:
【参考方案7】:替换
"notification" :
"title" : "title !",
"body" : "body !",
"sound" : "default"
,
"condition" : "'xxx' in topics",
"priority" : "high",
"data" :
....
by(删除通知):
"condition" : "'xxxx' in topics",
"priority" : "high",
"data" :
"title" : "title ! ",
"body" : "BODY",
......
你的代码: 替换:
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
remoteMessage.getNotification().getTitle();
remoteMessage.getNotification().getBody();
由
@Override
public void onMessageReceived(RemoteMessage remoteMessage)
remoteMessage.getData().get("title");
remoteMessage.getData().get("body");
【讨论】:
【参考方案8】:就我而言,我的错误是“AndrodManifest.xml”
我错过了一项服务(实际上 Android Studio 的 Firebase 助手缺少我的许可。:))
原创
<service android:name=".fcm.MyFirebaseInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
</intent-filter>
</service>
</application>
解决方案
<service android:name=".fcm.MyFirebaseInstanceIDService">
<intent-filter>
<action android:name="com.google.firebase.INSTANCE_ID_EVENT" />
</intent-filter>
</service>
<service android:name=".fcm.MyFirebaseMessagingService">
<intent-filter>
<action android:name="com.google.firebase.MESSAGING_EVENT" />
</intent-filter>
</service>
</application>
【讨论】:
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