我在我的 Android 应用程序中实现了 Google Cloud Messaging。当我在打开应用程序时发送带有 JSON 的消息时,它的行为与关闭应用程序时不同。
当我打开 应用程序并收到通知时,它会启动我希望它启动的 Intent 。当我收到通知时关闭应用程序,然后单击通知,它会打开主要 Intent 。当我关闭我的应用程序并收到推送通知时,我该如何说明它需要打开哪个 Intent?
MyGcmListenerService 中的代码
public class MyGcmListenerService extends GcmListenerService {
private static final String TAG = "MyGcmListenerService";
File fileDir, file;
String filename, filestring;
/**
* Called when message is received.
*
* @param from SenderID of the sender.
* @param data Data bundle containing message data as key/value pairs.
* For Set of keys use data.keySet().
*/
@Override
public void onMessageReceived(String from, Bundle data) {
Bundle notification = data.getBundle("notification");
String title = notification.getString("title");
String naam = notification.getString("naam");
String nfcId = notification.getString("nfcId");
Log.d(TAG, "From: " + from);
Log.d(TAG, "Title: " + title);
Log.d(TAG, "Naam: " + naam);
Log.d(TAG, "nfcId: " + nfcId);
if (from.startsWith("/topics/")) {
} else {
filename = "gegevensOverledene";
ReadWriteFile readWriteFile = new ReadWriteFile(getApplicationContext());
readWriteFile.writeFileOverledene(filename, naam);
}
sendNotification(title, naam, nfcId);
}
/**
* Create and show a simple notification containing the received GCM message.
*/
private void sendNotification(String title, String naam, String nfcId) {
Intent intent = new Intent(this, PinLoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
intent.putExtra("naam", naam);
intent.putExtra("nfcId",nfcId);
intent.putExtra("Class",NieuweOverledeneActivity.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0 /* Request code */, intent, PendingIntent.FLAG_ONE_SHOT);
Uri defaultSoundUri = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
NotificationCompat.Builder notificationBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle(title)
.setContentText(naam)
.setAutoCancel(true)
.setSound(defaultSoundUri)
.setContentIntent(pendingIntent);
NotificationManager notificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
notificationManager.notify(0 /* ID of notification */, notificationBuilder.build());
}
}
我发送的 JSON,请注意我故意遗漏了 token_mobile
{
"to": "TOKEN_MOBILE****************",
"notification": {
"title": "Nieuwe overledene",
"body": "Henk",
"naam": "Henk",
"nfcId": "80-40-A3-4A-C2-D6-04"
}
}
最佳答案
您正在发送通知消息。查看有关如何处理通知消息的更多信息 here .
当您的应用程序在前台时,通知消息会传递到您的 onMessageReceived
打回来。在那里您可以决定应该如何处理收到的消息,例如:生成并显示通知或与您的应用服务器同步或其他。
当您的应用程序处于后台时,通知消息会根据下游消息请求的“通知”对象中传递的属性自动生成通知,onMessageReceived
在这种情况下不被调用。如果您查看 reference docs对于通知消息,您将看到一个名为 click_action
的字段您可以使用它来定义在点击自动生成的通知时启动的 Activity:
On Android, if this is set, an activity with a matching intent filter is launched when user clicks the notification.
如果没有设置,主 Activity 将启动,这就是您现在看到的。
注意:此行为仅适用于通知消息,如果您仅发送数据消息,则所有发送的消息将导致 onMessageReceived
被调用。
关于android - 应用程序在后台时推送通知,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/37542149/