I want to make a html website. And everytime someone downloads something of my site, I want to get a notification on my phone. I have very little knowledge in Android app making but I do have some in html. Is there a way to do this? And where can I learn to do this? Wich programming language?
Thank you for the answers! I will start working on it.
Website part
Here you will need a server-side script language like ASP.NET or PHP to build your website where it will have some code to handle the part of capturing the click on the linked item you are showing on the site, getting its information like its name and then pushing a message to Google cloud messaging (GCM). You need to register with GCM to obtain Sender ID to use to it publish your message from your website's server-side code.
Well, this is quite a large topic, I will list down some useful resources to get you started with the development in website
ASP.NET Tutorial
PHP Tutorial
Google Cloud Messaging
Android part
Here you want to create a simple app, that has a service that subscribes to GCM (using the same GCM sender id) to obtain registration token and then it will be able to read the push notification messages sent from GCM via the onMessageReceived Method
#Override
public void onMessageReceived(String from, Bundle data) {
String message = data.getString("message");
Log.d(TAG, "From: " + from);
Log.d(TAG, "Message: " + message);
// Handle received message here.
}
Some useful resources for android and GCM:
Android tutorial
Android GCM
GCM Push notifications
Your restricted materials, like .pdf files can be handled by a request.
Az easy implementation it would be with PHP. Because you aren't exposing the .pdf directly it will be called a downloads.php. In the .php file you will make a counter and store it in a file or database and set up a Google messaging system and send a notification to Android. That's all.
Related
I am using AWS resources for my android project, I am planning to add push notification service for my project with AWS SNS.there are few questions bothering me much. I did not find any questions regarding these, except one or two but with unclear explanations.
1.Does AWS support FCM? SNS work with GCM. But Google recommends to use FCM instead of GCM. I did not find AWS supporting FCM.
2.Do AWS store messages (or data) into their databases even after sending push notifications?
3.I tried putting FCM api key in SNS application platform, it is showing invalid parameters why?
FCM is backwards compatible with GCM. The steps for setting up FCM on AWS are identical to the GCM set up procedure and (at least for the moment) FCM works transparently with GCM and SNS with respect to server-side configuration.
However, if you are sending data payloads to the Android device they will not be processed unless you implement a client side service that extends FirebaseMessagingService. The default JSON message generator in the AWS console sends data messages, which will be ignored by your app unless the aforementioned service is implemented. To get around this for initial testing you can provide a custom notification payload which will be received by your device (as long as your app is not in the foreground)
There are GCM-FCM migration instructions provided by Google however the changes you need to make are predominantly on the App side.
The steps you need to follow to test GCM/FCM on your app with SNS are:
Create a Platform Application in SNS, selecting Google Cloud Messaging (GCM) as the Push Notification Platform, and providing your Server API key in the API key field.
Select the Platform Application and click the Create platform endpoint button.
Provide the InstanceID (Device Token) generated by your app. You must extend the FirebaseInstanceIDService and override the onTokenRefresh method to see this within your Android App. Once you have done this, uninstall and reinstall your app and your token should be printed to the Debug console in Android Studio on first boot.
Click the Add endpoint button.
Click on the ARN link for your platform application.
Select the newly created Endpoint for your device and click the Publish to endpoint button.
Select the JSON Message Format, and click the JSON message generator button.
Enter a test message and click the Generate JSON button
Now comes the "gotcha part".
The message that is generated by SNS will be of the form:
{
"GCM": "{ \"data\": { \"message\": \"test message\" } }"
}
As we mentioned earlier, data payloads will be ignored if no service to receive them has been implemented. We would like to test without writing too much code, so instead we should send a notification payload. To do this, simply change the JSON message to read:
{
"GCM": "{ \"notification\": { \"title\": \"test title\", \"body\": \"test body\" } }"
}
(For more information about the JSON format of an FCM message, see the FCM documentation.)
Once you have done this, make sure your app is not running on the device, and hit the Publish Message button. You should now see a notification pop up on your device.
You can of course do all this programmatically through the Amazon SNS API, however all the examples seem to use the data payload so you need to keep that in mind and generate a payload appropriate to your use case.
Now you can go to your firebase console (https://console.firebase.google.com/) select your project, click the gear icon and choose project settings, then click on the cloud messaging tab...
You'll see the legacy Server Key which is the GCM API Key and you'll have the option to generate new Server Keys which are the FCM versions
SNS will accept both versions but their menu option is still categorizing it under GCM
Here is picture for your reference:
Note that you can "accidentally" remove your Server Keys but the Legacy server key is not deletable. Also, if you click the add server key button, you'll get a new server key BELOW the first one, WITH NO WARNING! ...Nice job Google ;)
One more additional note to Nathan Dunn's great answer.
How to send data with the notification from SNS to Firebase.
We need to add data to the Json (inside the notification):
{
"default": “any value",
"GCM": "{ \"notification\": { \"body\": \”message body\”, \”title\”: \”message title \”, \"sound\":\"default\" } , \"data\" : {\”key\" : \”value\", \”key2\" : \”value\” } }”
}
In your FirebaseMessagingService implementation (Xamarin example)
public override void OnMessageReceived(RemoteMessage message)
{
try
{
var body = message?.GetNotification()?.Body;
var title = message?.GetNotification()?.Title;
var tag = message?.GetNotification()?.Tag;
var sound = message?.GetNotification()?.Sound;
var data = message?.Data
foreach (string key in data.Keys)
{
// get your data values here
}
}
catch (Exception e)
{
}
}
I tried to use solution with notification payload instead of data, but I did not receive push notifications on the mobile device. I found this tutorial https://youtu.be/iBTFLu30dSg with English subtitles of how to use FCM with AWS SNS step by step and example of how to send push notifications from AWS console and implement it on php with aws php sdk. It helped me a lot.
Just an additional note to Nathan Dunn's Answer: to add sound use the following JSON message
{
"GCM": "{ \"notification\": { \"text\": \"test message\",\"sound\":\"default\" } }"
}
It took me a while to figure out how to send the notification with the right payload (publish to topic). So I will put it here.
private void PublishToTopic(string topicArn)
{
AmazonSimpleNotificationServiceClient snsClient =
new AmazonSimpleNotificationServiceClient(Amazon.RegionEndpoint.EUWest1);
PublishRequest publishRequest = new PublishRequest();
publishRequest.TopicArn = topicArn;
publishRequest.MessageStructure = "json";
string payload = "\\\"data\\\":{\\\"text\\\":\\\"Test \\\"}";
publishRequest.Message = "{\"default\": \"default\",\"GCM\":\"{" + payload + "}\"}";
PublishResponse publishResult = snsClient.Publish(publishRequest);
}
Amazon does support FCM as all previous code has been migrated from GCM to FCM. Below article explains in detail.
Article Published by Amazon
To answer the questions:
AWS SNS does support FCM.
No AWS does not store messages after sending push notifications.
For a detailed tutorial on setting up FCM with SNS please read this article.
I want to send push notification to individual using android GCM. have created the app in SNS. I am using aws-sdk v1.4 for Ruby.
When I send through Amazon web interface I receive the messages, but When I publish it through using the code below, I get blank messages. what is the right message format to send?
sns = AWS::SNS::Client.new
endpoint = sns.create_platform_endpoint(platform_application_arn:my_token)
sns.publish(target_arn:endpoint:endpoint_arn, message: "GCM:{data:{message:"GCM:{data:{message:'hello'}")
Please help.
TIA
{"GCM": "{ \"data\": { \"message\": \"hello\" } }"}
Do not call to_json method also set the subject parameter in publish.
The message should be a valid JSON string if you want to publish a message to GCM. You can use to_json to serialize a hash object to JSON. Here is a article about using AWS SDK for Ruby http://blog.tryneighborly.com/amazon-sns-for-apns-on-rails/.
For more information about Amazon SNS:
Send Custom Platform-Specific Payloads in Messages to Mobile Devices
Getting Started with Google Cloud Messaging for Android
Ruby doc for Aws::SNS::Client
I've recently been learning Android Development and I am trying to make a sample application which uses Google Cloud Messaging. My goal is to make a simple application which can receive Push notifications from a server. I've gotten the client side of the application to work by registering my device. Now I am trying to create the server side. However, I have absolutely no experience in setting up a server or programming on the server side. So I was hoping someone could point me in the right direction so that I could have a server sending the Push notifications. I have been following the tutorial on this link but I am stuck at the server implementation. I would greatly appreciate it if someone could point me in the right direction. Thanks!
Actually is more easier using Tomcat or AppEngine. See this tutorial in how to setup your GCM Server.
You need the device registration id to which you want to send the message on the server side you will need your API key, this is a JSP example :
http://yourdomain.com:8080/sendMessage.jsp?registrationID=kSADAS3242&messageToSend=Hello
String value = request.request.getParameter("messageToSend");
String registrationId = request.getParameter("registrationID");
Sender sender = new Sender("YOUR API KEY");
Message message = new Message.Builder().addData("FLAG","SERVE").addData("MSG", value).build();
Result result = sender.send(message, registrationId, 5);
On your client device should expect :
#Override
protected void onMessage(Context context, Intent intent) {
Log.i(TAG, "Got a message from Google Cloud Messaging !!");
String tag = intent.getExtras().getString("FLAG");
String message = intent.getExtras().getString("MSG");
Log.i(TAG, tag + " : " + message);
}
This should print "SERVE : Hello"
If you have used PHP you should be familiar with xampp or similar software.
If not, all you have to do is download and install it, start the services and on your browser go to:
http://localhost/xampp
to test if it's properly installed.
If you can see the Xampp page you can start running scripts php from xampp/htdocs and run them like this:
http://localhost/yourscript.php
Try a simple hello world:
<?php
echo 'hello world';
?>
After that you should be ready to start following this tutorial or any tutorial in google just typing gcm php tutorial
I found that php is the most simple way for me to configure the server side for GCM, hope you find it useful...
I have a Json URL, which contains data about Latest Job Postings, I am successfully parsing the Json URL and able to display the top job postings in my ListView.
But my requirement is to create a push notification, so that whenever a new job is posted, the user should be able to get a notification on device.
I have followed this: http://www.vogella.com/articles/AndroidNotifications/article.html
But I don't know how to get notifications in my case.
Could anyone help me?
Issue:
Give push notification to user's device about the updated data even when application is in background mode.
Solution:
Upon successful insertion of new data in your database (which is going to give updated set of data to your JSON request) , just call the file which send GCM push notification to all your users.
Reference:
GCM docs
GCM push-notification using php server
In context of implementation presented in demo app of 2nd link,
upon successful insertion,you can call send_message.php file,but make sure that $regId and $message should be retrieved from your database
You have created ActionBar Notifications for your app, but now you need to create the ability to receive notifications from a web client, instead of going to find them yourself from the URL.
To create a push notification you would need to have a constant thread (BroadcastReceiver) on the device that is waiting for the notification from the sever.
Google 'Cloud to Device Messaging' is the simplest way to do this.
This is a good link with lots of info on how to do this :
http://blog.mediarain.com/2011/03/simple-google-android-c2dm-tutorial-push-notifications-for-android/
If you require these notifications to be displayed on the device even when the application is not running (which seems to be the case from what you describe), you can use Google Cloud Messaging.
You would need a server that would poll the Json URL for updates, and send a GCM message to all the devices where your app is installed once such an update is detected.
Your app would have to register to Google Cloud Messaging and send the Registration ID received from Google to your server.
When your app receive a GCM message, you would create a notification and when the notification is tapped, you would start the activity that loads the data from the JSON URL.
I am trying GCM based android app to push messages from server to android client. I am able to push fix string with the following coe. I am wondering about the ways to push XML file from server and parse at the android application. I have done some research but I couldn't find push XML rather I found send XML file. Thank you
if (androidArray.size() == 1) {
String registrationId = androidArray.get(0);
Message message = new Message.Builder()
.collapseKey(collapseKey)
.timeToLive(30)
.delayWhileIdle(true)
.addData("message", Message)
.build();
Result result = sender.send(message, registrationId, 5);
You don't push xml (or JSON preferably) to the android app. You send a simple message to the app.
when the app receives the message it then needs to go and pull the xml/json from the website with an http get request to the relevant url that will supply the xml.
The android app can then parse the response and do whatever you want it to.
Here is an EXCELLENT tutorial on C2DM (The forerunner to GCM) http://www.vogella.com/articles/AndroidCloudToDeviceMessaging/article.html
You should be able to work out the differences needed.
UPDATE
Google Android has a complete section on GCM which can be found here
http://developer.android.com/google/gcm/index.html
Within that link there are getting started guides and a GCM Demo app
There are limits to the amount of data you can send and you should not rely on your data not ever exceeding the limits or Google arbitrarily changing the amount of data you are allowed to send.
Should either of those occur you would need to update your app so just do it right in the first place.
The message you send should act as a "key" to determine what action to take when the message is received.
UPDATE
If you are feeling REALLY adventurous you could use a custom sync adapter to help you consume your web services. It's pretty advanced stuff but if you are feeling curious about this then watch the Google I/O seminar on consuming RESTfull web services http://www.youtube.com/watch?v=xHXn3Kg2IQE