I have a button in my Windows Phone 8.1 RT app. When the user clicks the button, 2 SMS are supposed to be sent to two different users.
I can launch one SMS Task using the following code
var message = new ChatMessage();
message.Recipients.Add("1231233");
message.Body = "This is a text message from an app!";
await ChatMessageManager.ShowComposeSmsMessageAsync(message);
But when I do this multiple times, the app crashes. The Task complete event fires on task launch, is there a way to know if the user has returned to the app after sending SMS so the next one can be fired?
If the ShowComposeSmsMessageAsync is anything like the MessageDialog.ShowAsync method, which seems true as both return IAsyncInfo objects (..Action/..Operation is different, but the async part is important for us), this problem could be solved like the problem of showing multiple message dialogs. A quick search yielded this question, with multiple correct solutions: How to allow for multiple popups at once in WinRT?
If the above doesn't work, you could - for example - subscribe to the VisibilityChanged event of the app Window (https://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.window.aspx), as it should provide you with an event about the user returning from the sms task.
So basically 1. subscibe to event, 2. send 1st sms, 3. wait for event, 4. send 2nd sms.
Related
I am working on an application with ionic and angularjs. I would like, that the app checks automatically in the background, if new database entries are available. If yes, it should send a notification. My question: How can I check in the background continiously, if there is an database update?
And Question #2: If there is no entry in the database, it should throw you out of the actual page.
Background: I am working on an live-survey app for events, with which you can interact with the show on the stage. If a question is activated for the people, you should get a notification.
1 - for continuously checks you should use cron job from your server side and based on it you can send your notifications
2- if there is no entries you can send push notification with any flag in its payload and check on it in the mobile app then execute the desired behavior.
I have implemented Fast resume in my windows phone 8 app and its working fine in every case except following scenario.
Steps:
1)Phone is password locked
2)Toast is received.
3)Tap on toast.
4)App is activated.
5)The page which was last on backstack opens up with reset state.
6)No more navigation
In Fast Resume app should receive one more navigation with deep link on tapping on toast which is missing in this case.
Please find sample here.
This feature of Windows Phone. If the reminder or toast to send from your lock screen (even without a password), the navigation application is limited. I think that there is no way now to fix this behavior ...
I got even more unpleasant situation with reminders of the applications:
1) If screen is not locked and you gave a reminder of the application, then click on the reminder will open the application, you can immediately take action in response to the reminder. All well and good.
2) when the lock screen (even without a password) and you send a reminder of your application, there is no ability to navigate the application by clicking the reminder. Reminder, you can only cancel or postpone for a while. Then the user must unlock the screen, open the program and try to understand what to do in response to this reminder.
At least toast is displayed in the notification center, and the reminder disappears without a trace and the user attempts to find what caused the reminder.
I do not understand why such inconvenient behavior for user application communicates with the lock screen.
Wrote a post on UserVoise, but without response.
Enable to open a task or an appointment directly by tap on the reminder
I am new to WP8 Aync tasks and have a query-
In WP8, on backbutton press, since it basically pops the last screen from the stack, then why are the Async tasks not cancelled when back key is pressed?
Also, if I am using the HttpWebRequest response, is using Abort() the only way of cancelling the async tasks?
The reason is because Back is a UI concept but things like networking are typically decoupled from the UI. As an example, imagine the user hit "Save" in an app and that started a web request to send their data to the cloud. Then they hit the Back button to go back to the previous page; it would be unexpected for the web request to be aborted and the data to potentially not be saved.
If you have a need to stop tasks when your UI changes (eg, because of resource consumption concerns) then you can try to do that, but I have a vague recollection that Abort is a no-op for Windows Phone 8 (but I could be wrong).
I'm working on a Windows Phone app that will receive push notifications and needs to show critical alerts to the user. As far as I can see there are 3 types of push notification:
Raw Notification - Raw notifications are used when your application is actually running on the device. This allows you to
update your interface “live” as the user is using it.
Toast Notification – This message will be received regardless of whether your application is running or not, but popping toast messages
while your app is running might be a little annoying. I’ll
demonstrate this example below. Toast WILL NOT also update your
application’s data. You still need to pass a Raw Notification to make
this happen.
Tile Notification – If your application is pinned to the user’s Start screen, you can update the Tile for your application. You can
change the background image, as well as an integer from 0-99.
source: http://www.jeffblankenburg.com/2010/10/19/31-days-of-windows-phone-day-19-push-notifications/
These each have different behaviours, but none lend themselves to critical notifications, where the user can be actively alerted to critical information.
Having read Guidelines for toast notifications on MSDN, it suggests
Don't use toast notifications to notify the user of something that
must be seen, such as a critical alert. To ensure that the user has
seen your message, notify them in the context of your app with a
Flyout, dialog, app bar, or other inline element.
So the question is, how can I trigger a "flyout, dialog, app bar or other inline element" if my app is closed and the phone receives a critical notification.
long story short: you can't enforce that your app opens on an incoming pns
But I think you've got the toast scenario wrong. A toast can be used to notify the user, if he taps it the app opens and you might react to that by the navigation uri (e.g.: ?fromToast=true).
If you receive a toast notification while your app is open the toast won't show. Toast Notifications only get displayed when your app isn't open. But you can react to an incoming toast notification (there's an event for that) to implement an behavior of your way (e.g.: flyout, msgbox, ...).
note: introduced with GDR3: The sound of the toast notification can now be changed (even made silent).
I am developing an application in windows phone which having push notification facility. I am able to receive push message at device.
If Application is not running , I am getting message at home screen on the click of that msg it starts that application. I want to perform some task on the basis of that Push Notification Message. But i am not able to handle that event.
Please help me to handle that EVENT if application is running or application is in background or application is not running .
Thanking You,
Which type of notification are you sending? Based on your question I assume you are referring to toast notifications.
When do you want to perform the task - before or after the user clicks on the message? If the application is not running, you can only do it after clicking the message.