Updating Activity when it comes back to the Foreground after data has already been retrieved
- I have implemented a
Servicethat receives notifications sent from
the server. - I'm currently using a broadcast receiver to send data. The Broadcast Listener is updating the
Activityjust fine. However, when data is sent when the Activity is not on "onResume" state, the data is not received. - I got interested in using RXjava because I believe it could resolve the issue but don't know where to start.
The problem:
When the activity is not on the foreground, the Activity is not updating.
Not in the foreground: Meaning that I have called unregisterReceiver to unregister in my onPause method.
My current user case: I'm using a Service to intercept notification sent from server using FCM
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "[" + MyFirebaseMessagingService.class.getName() + "]=";
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onNewToken(String token) {
Log.d(TAG, "Refreshed token: " + token);
}
/**
* Handle time allotted to BroadcastReceivers.
*/
private void handleNow() {
Log.d(TAG, "Short lived task is done.");
}
@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());
// Handle message within 10 seconds
handleNow();
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
}
// <-----------RX JAVA Observable Implementation----------->
// I would like to use Rx java to send data to my activity ONLY if the activity is in the foreground
// because data will be used to update the UI
}
@Override
public void onDeletedMessages() {
super.onDeletedMessages();
}
}
I looked into RXjava and I find out that the library takes care of asynchronous operations, but what I'm curious about is:
if there is any functions within RXjava that will automatically update that data once the Activity is back on the foreground?
If not, what are the other alternatives?
Maybe this question has already been answered but I could not find a precise user case to what I'm trying to achieve in here. Also, I might be asking the question wrongly, but that just explains my confusion here
java
android rx-java2 asked Nov 20 at 20:37
Red M
93631126
add a comment |
- I have implemented a
Servicethat receives notifications sent from
the server. - I'm currently using a broadcast receiver to send data. The Broadcast Listener is updating the
Activityjust fine. However, when data is sent when the Activity is not on "onResume" state, the data is not received. - I got interested in using RXjava because I believe it could resolve the issue but don't know where to start.
The problem:
When the activity is not on the foreground, the Activity is not updating.
Not in the foreground: Meaning that I have called unregisterReceiver to unregister in my onPause method.
My current user case: I'm using a Service to intercept notification sent from server using FCM
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "[" + MyFirebaseMessagingService.class.getName() + "]=";
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onNewToken(String token) {
Log.d(TAG, "Refreshed token: " + token);
}
/**
* Handle time allotted to BroadcastReceivers.
*/
private void handleNow() {
Log.d(TAG, "Short lived task is done.");
}
@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());
// Handle message within 10 seconds
handleNow();
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
}
// <-----------RX JAVA Observable Implementation----------->
// I would like to use Rx java to send data to my activity ONLY if the activity is in the foreground
// because data will be used to update the UI
}
@Override
public void onDeletedMessages() {
super.onDeletedMessages();
}
}
I looked into RXjava and I find out that the library takes care of asynchronous operations, but what I'm curious about is:
if there is any functions within RXjava that will automatically update that data once the Activity is back on the foreground?
If not, what are the other alternatives?
Maybe this question has already been answered but I could not find a precise user case to what I'm trying to achieve in here. Also, I might be asking the question wrongly, but that just explains my confusion here
java
android rx-java2 asked Nov 20 at 20:37
Red M
93631126
To update data once the activity back on the foreground you can register as a lifecycle observer. Look at LiveData source code you will get the solution.
– Mohit Chauhan
Nov 21 at 6:39
1
notificatin data is very small so you can save in shared prefs and later when the activity resumes display it form prefs
– Har Kal
Nov 21 at 22:59
I went ahead and used RxJava that does the job using the function onNext on the observable and observer.
– Red M
Nov 21 at 23:19
I agree with Har Kal. You can store this in a SharedPref and reference that once the Activity starts again. Very simple. This is what I am doing.
– XO.
Dec 10 at 19:41
add a comment |
- I have implemented a
Servicethat receives notifications sent from
the server. - I'm currently using a broadcast receiver to send data. The Broadcast Listener is updating the
Activityjust fine. However, when data is sent when the Activity is not on "onResume" state, the data is not received. - I got interested in using RXjava because I believe it could resolve the issue but don't know where to start.
The problem:
When the activity is not on the foreground, the Activity is not updating.
Not in the foreground: Meaning that I have called unregisterReceiver to unregister in my onPause method.
My current user case: I'm using a Service to intercept notification sent from server using FCM
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "[" + MyFirebaseMessagingService.class.getName() + "]=";
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onNewToken(String token) {
Log.d(TAG, "Refreshed token: " + token);
}
/**
* Handle time allotted to BroadcastReceivers.
*/
private void handleNow() {
Log.d(TAG, "Short lived task is done.");
}
@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());
// Handle message within 10 seconds
handleNow();
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
}
// <-----------RX JAVA Observable Implementation----------->
// I would like to use Rx java to send data to my activity ONLY if the activity is in the foreground
// because data will be used to update the UI
}
@Override
public void onDeletedMessages() {
super.onDeletedMessages();
}
}
I looked into RXjava and I find out that the library takes care of asynchronous operations, but what I'm curious about is:
if there is any functions within RXjava that will automatically update that data once the Activity is back on the foreground?
If not, what are the other alternatives?
Maybe this question has already been answered but I could not find a precise user case to what I'm trying to achieve in here. Also, I might be asking the question wrongly, but that just explains my confusion here
java
android rx-java2 asked Nov 20 at 20:37
Red M
93631126
- I have implemented a
Servicethat receives notifications sent from
the server. - I'm currently using a broadcast receiver to send data. The Broadcast Listener is updating the
Activityjust fine. However, when data is sent when the Activity is not on "onResume" state, the data is not received. - I got interested in using RXjava because I believe it could resolve the issue but don't know where to start.
The problem:
When the activity is not on the foreground, the Activity is not updating.
Not in the foreground: Meaning that I have called unregisterReceiver to unregister in my onPause method.
My current user case: I'm using a Service to intercept notification sent from server using FCM
public class MyFirebaseMessagingService extends FirebaseMessagingService {
private static final String TAG = "[" + MyFirebaseMessagingService.class.getName() + "]=";
@Override
public void onCreate() {
super.onCreate();
}
@Override
public void onNewToken(String token) {
Log.d(TAG, "Refreshed token: " + token);
}
/**
* Handle time allotted to BroadcastReceivers.
*/
private void handleNow() {
Log.d(TAG, "Short lived task is done.");
}
@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());
// Handle message within 10 seconds
handleNow();
}
// Check if message contains a notification payload.
if (remoteMessage.getNotification() != null) {
Log.d(TAG, "Message Notification Body: " + remoteMessage.getNotification().getBody());
}
// <-----------RX JAVA Observable Implementation----------->
// I would like to use Rx java to send data to my activity ONLY if the activity is in the foreground
// because data will be used to update the UI
}
@Override
public void onDeletedMessages() {
super.onDeletedMessages();
}
}
I looked into RXjava and I find out that the library takes care of asynchronous operations, but what I'm curious about is:
if there is any functions within RXjava that will automatically update that data once the Activity is back on the foreground?
If not, what are the other alternatives?
Maybe this question has already been answered but I could not find a precise user case to what I'm trying to achieve in here. Also, I might be asking the question wrongly, but that just explains my confusion here
java
android rx-java2 java
android rx-java2 asked Nov 20 at 20:37
Red M
93631126
asked Nov 20 at 20:37
Red M
93631126
edited Nov 21 at 18:12
asked Nov 20 at 20:37
Red M
93631126
asked Nov 20 at 20:37
Red M
93631126
asked Nov 20 at 20:37
Red M
93631126
93631126
To update data once the activity back on the foreground you can register as a lifecycle observer. Look at LiveData source code you will get the solution.
– Mohit Chauhan
Nov 21 at 6:39
1
notificatin data is very small so you can save in shared prefs and later when the activity resumes display it form prefs
– Har Kal
Nov 21 at 22:59
I went ahead and used RxJava that does the job using the function onNext on the observable and observer.
– Red M
Nov 21 at 23:19
I agree with Har Kal. You can store this in a SharedPref and reference that once the Activity starts again. Very simple. This is what I am doing.
– XO.
Dec 10 at 19:41
add a comment |
To update data once the activity back on the foreground you can register as a lifecycle observer. Look at LiveData source code you will get the solution.
– Mohit Chauhan
Nov 21 at 6:39
1
notificatin data is very small so you can save in shared prefs and later when the activity resumes display it form prefs
– Har Kal
Nov 21 at 22:59
I went ahead and used RxJava that does the job using the function onNext on the observable and observer.
– Red M
Nov 21 at 23:19
I agree with Har Kal. You can store this in a SharedPref and reference that once the Activity starts again. Very simple. This is what I am doing.
– XO.
Dec 10 at 19:41
To update data once the activity back on the foreground you can register as a lifecycle observer. Look at LiveData source code you will get the solution.
– Mohit Chauhan
Nov 21 at 6:39
To update data once the activity back on the foreground you can register as a lifecycle observer. Look at LiveData source code you will get the solution.
– Mohit Chauhan
Nov 21 at 6:39
1
1
notificatin data is very small so you can save in shared prefs and later when the activity resumes display it form prefs
– Har Kal
Nov 21 at 22:59
notificatin data is very small so you can save in shared prefs and later when the activity resumes display it form prefs
– Har Kal
Nov 21 at 22:59
I went ahead and used RxJava that does the job using the function onNext on the observable and observer.
– Red M
Nov 21 at 23:19
I went ahead and used RxJava that does the job using the function onNext on the observable and observer.
– Red M
Nov 21 at 23:19
I agree with Har Kal. You can store this in a SharedPref and reference that once the Activity starts again. Very simple. This is what I am doing.
– XO.
Dec 10 at 19:41
I agree with Har Kal. You can store this in a SharedPref and reference that once the Activity starts again. Very simple. This is what I am doing.
– XO.
Dec 10 at 19:41
add a comment |
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To update data once the activity back on the foreground you can register as a lifecycle observer. Look at LiveData source code you will get the solution.
– Mohit Chauhan
Nov 21 at 6:39
1
notificatin data is very small so you can save in shared prefs and later when the activity resumes display it form prefs
– Har Kal
Nov 21 at 22:59
I went ahead and used RxJava that does the job using the function onNext on the observable and observer.
– Red M
Nov 21 at 23:19
I agree with Har Kal. You can store this in a SharedPref and reference that once the Activity starts again. Very simple. This is what I am doing.
– XO.
Dec 10 at 19:41