I have an apple watch app that is not independent from the iPhone and I receive push notifications successfully on my watch.
However, tapping the push notification always opens the watch app. I do not want to handle this in the watch app. Is there a way to do this? Is there a way to not open the watch app on tap?
I've tried using the handleAction() functions in the WKExtensionDelegate but these are apparently now deprecated, and they never get fired.
This might not be possible. It relies on the OS.
Possible reasons for this is notifications are for the user to click and open the app usually. And this might go against apple app guidelines too to prevent the app from opening.
However, you can try these:
This is an example of a foreground service with the notification.
public class UploadService extends IntentService{
private NotificationCompat.Builder mBuilder;
public UploadService() {
super("UploadService");
}
#Override
protected void onHandleIntent(Intent intent) {
Intent deleteIntent = new Intent(this, CancelUploadReceiver.class);
PendingIntent pendingIntentCancel = PendingIntent.getBroadcast(this, 0, deleteIntent, PendingIntent.FLAG_UPDATE_CURRENT);
//building the notification
mBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(android.R.drawable.ic_menu_upload)
.setContentTitle("Uploading Media...")
.setTicker("Starting uploads")
.addAction(android.R.drawable.ic_menu_close_clear_cancel, "Cancel Upload", pendingIntentCancel);
Intent notificationIntent = new Intent(this, MainActivity.class);
notificationIntent.setFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, notificationIntent, PendingIntent.FLAG_UPDATE_CURRENT);
mBuilder.setContentIntent(pendingIntent);
mBuilder.setProgress(100, 0, true);
startForeground(12345, mBuilder.build());
for(int i=0;i<10;i++){
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
You need to register the CancelUploadReceiver in the manifest file.
<receiver android:name=".CancelUploadReceiver"/>
And when the “Cancel Upload” is tapped it will receive the broadcast. Then we can simply stop the service.
public class CancelUploadReceiver extends BroadcastReceiver{
#Override
public void onReceive(Context context, Intent intent) {
Intent service = new Intent();
service.setComponent(new ComponentName(context,UploadService.class));
context.stopService(service);
}
}
Another option might be to create a Custom Interface that implements the UINotificationContentExtension protocol.
Related:
Can you disable App-opening mechanism when the user presses the Notification Banner?
How to disable opening app when user tap push notification
iOS notifications actions without opening the app
Is it possible to avoid showing app to user when tapping on a push notification in iOS?
Android notifications actions without opening the app
Andriod notifications with actions
Related
I'm working on a Xamarion iOS app. I want to display a local notification when an event occurs in my app, Like Outlook does when an email is received.
I'm using the following code, after having received the right to send notification from the user, of course:
var content = new UNMutableNotificationContent();
if (!string.IsNullOrWhiteSpace(value: mySoundFile))
{
content.Sound = UNNotificationSound.GetCriticalSound(mySoundFile);
}
if (!string.IsNullOrEmpty(myChannelDescription))
{
content.ThreadIdentifier = myChannelDescription;
}
content.Title = "MyTitle";
content.Body = "MyText";
var trigger = UNTimeIntervalNotificationTrigger.CreateTrigger(0.1, false);
var request = UNNotificationRequest.FromIdentifier(notification.Id.ToString(), content, trigger);
var center = UNUserNotificationCenter.Current;
center.AddNotificationRequest(request, null);
But the notification is not displayed.
Any help appreciated.
The reason for not displaying the notification could be several things. Try the following solutions:
Make sure that the application has the required rights to send notifications and that the user has enabled them.
Check if the sound file is valid and located in the application package. It may also be necessary to add it to the Info.plist file.
Check if the thread identifier is valid and not repeatable.
Check if the trigger time is valid. Setting 0.1 seconds is very short and may not be enough to display the notification.
If the above solutions do not work, it is worth using debugging tools to more closely examine why the notification is not displayed.
On iOS, you must request permission to use notifications before attempting to schedule them. Just like this, you can try to check if the following code is added to your project:
UNUserNotificationCenter.Current.RequestAuthorization(UNAuthorizationOptions.Alert, (approved, err) =>
{
...
});
You can change your AddNotificationRequest as follows to see if there is an error in the notification：
center.AddNotificationRequest(request, (err) =>
{
if (err != null)
{
throw new Exception($"Failed to schedule notification: {err}");
}
});
For more details, you can refer to the following documents to check some permission issues:
Enhanced User Notifications in Xamarin.iOS | Microsoft
Asking permission to use notifications | Apple Developer
UpDate: If your app is in the foreground. You could try implementing the delegate userNotificationCenter(_:willPresent:withCompletionHandler:) which will be called when a notification arrives while the app is in the foreground. Refer to the following code:
UNUserNotificationCenter.Current.Delegate = new TestDelegate();
public class TestDelegate: UNUserNotificationCenterDelegate
{
public override void WillPresentNotification(UNUserNotificationCenter center, UNNotification notification, Action<UNNotificationPresentationOptions> completionHandler)
{
completionHandler(UNNotificationPresentationOptions.Alert);
}
}
maybe someone can help me.
In my app I'm using push notifications to inform the users that a new message is written to the database. One user can accept the notification and work with the content or dismiss it. If the user accepts it, a silent push is sent to all other devices which received the notification earlier. Here is my code handling this silent notification:
public override void ReceivedRemoteNotification(UIApplication application, NSDictionary remoteNotification)
{
try
{
if (remoteNotification != null)
{
var alert = remoteNotification[FromObject("aps")];
if (alert != null)
{
string id = ((NSDictionary)alert)[FromObject("deleteId")].Description;
if (!String.IsNullOrEmpty(id))
{
List<string> idents = new List<string>();
UNUserNotificationCenter.Current.GetDeliveredNotifications(completionHandler: (UNNotification[] t) =>
{
foreach (UNNotification item in t)
{
UNNotificationRequest curRequest = item.Request;
var notificationId = ((NSDictionary)curRequest.Content.UserInfo[FromObject("aps")])[FromObject("notificationId")].Description;
if (id == notificationId)
{
idents.Add(curRequest.Identifier);
}
}
UNUserNotificationCenter.Current.RemoveDeliveredNotifications(idents.ToArray());
});
}
}
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
The problem is that the notification is still visible in the notification center until the app is brought to foreground. But then it gets deleted.
Is there a way to force the method to delete the notification instantly and not only when the app is (re)opened?
When you want to clear the Notifications send from this app. Set its application's badge to 0 to achieve this.
As you said you send a silent notifications to other users, Then DidReceiveRemoteNotification() will fire. In this event we can clear all notifications:
public override void DidReceiveRemoteNotification(UIApplication application, NSDictionary userInfo, Action<UIBackgroundFetchResult> completionHandler)
{
var aps = userInfo["aps"] as NSDictionary;
if (aps["content-available"].ToString() == "1")
{
//check if this is a silent notification.
UIApplication.SharedApplication.ApplicationIconBadgeNumber = 0;
}
completionHandler(UIBackgroundFetchResult.NewData);
}
Please notice that starting with iOS 8.0, your application needs to register for user notifications to be able to set the application icon badge number. So please add the code below in FinishedLaunching():
UIUserNotificationSettings settings = UIUserNotificationSettings.GetSettingsForTypes(UIUserNotificationType.Badge, null);
UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
Moreover silent notifications can only be received when your app is on background or foreground. If it's terminated, this will fail.
To remove a notification, you send a silent push notification to all devices with the notification ID as payload that should be removed.
On the clients you implement a UNNotificationServiceExtension which allows you to remove currently displayed notifications by their IDs: UNUserNotificationCenter.current().removeDeliveredNotifications.
This gives you the advantage that you have full control over this logic on the server side.
I am building an iOS app with Xamarin, with this BLE plugin:
https://github.com/aritchie/bluetoothle
I'm just broadcasting a UUID via BLE, and it works. Here is my code:
var data = new Plugin.BluetoothLE.Server.AdvertisementData
{
LocalName = "MyServer",
};
data.ServiceUuids.Add(new Guid("MY_UUID_HERE"));
await this.server.Start(data);
The only problem is that it stops broadcasting once I put the app in the background. And resumes again when I open the app again.
How can I let it continue to broadcast once it's in the background? I read the documentation here:
https://developer.apple.com/library/content/documentation/NetworkingInternetWeb/Conceptual/CoreBluetooth_concepts/CoreBluetoothBackgroundProcessingForIOSApps/PerformingTasksWhileYourAppIsInTheBackground.html
And it says that I have to use the CBCentralManager class to obtain the preservation and restoration feature (so I can keep broadcasting the UUID at all times), but I'm having a hard time translating this to Xamarin/C#.
EDIT
After researching some more, I read that I need to create an instance of CBCentralManager and implement WillRestoreState in the delegate. I did this in the AppDelegate:
[Register("AppDelegate")]
public class AppDelegate : MvxApplicationDelegate, ICBCentralManagerDelegate
{
private IGattServer server = CrossBleAdapter.Current.CreateGattServer();
private CBCentralManager cbCentralManager;
public override bool FinishedLaunching(UIApplication application, NSDictionary launchOptions)
{
// irrelevant code...
this.Ble();
return true;
}
private async Task Ble()
{
try
{
await Task.Delay(5000); // wait for it to finish initializing so I can access BLE (it crashes otherwise)
var options = new CBCentralInitOptions();
options.RestoreIdentifier = "myRestoreIndentifier";
this.cbCentralManager = new CBCentralManager(this,null,options);
var data = new Plugin.BluetoothLE.Server.AdvertisementData
{
LocalName = "MyServer",
};
data.ServiceUuids.Add(new Guid("MY_UUID_HERE"));
await this.server.Start(data);
}
catch (Exception e)
{
}
}
public void UpdatedState(CBCentralManager central)
{
//throw new NotImplementedException();
}
[Export("centralManager:willRestoreState:")]
public void WillRestoreState(CBCentralManager central, NSDictionary dict)
{
//never gets called
}
But it didn't make a difference for me. And the WillRestoreState method never gets called... I don't mind using a different plugin/library if I have to at this point...
EDIT 2
I just realized that the app is still broadcasting while it is in the background, I just don't see the service UUID anymore (in the web portal of the beacon that I'm testing with), I only see the phone's identifier.
After doing tons of research, I found that it is simply an iOS restriction - you can not broadcast the UUID of a BLE service while your app is in the background. Background work is very restrictive in iOS.
EDIT to include Paulw11 comment (which is true):
You can advertise a service, but it is advertised in a way that only another iOS device that is specifically scanning for that service UUID can see.
Although you can not broadcast the UUID of a BLE service while your iOS app is in the background, for anyone trying to do something similar, you should look into iBeacon. It's Apple's protocol for letting iOS apps do bluetooth stuff while it's in the background.
I do not usually post here, but this time I am stuck. I searched already on this forum, on stackoverflow and on google in general but I cannot understand what I am doing wrong.
I am developing a Xamarin.Forms app and I am having trouble to fire the methods when a remote notification is received.
Here is my code:
Just after login I execute this method to register to apple notification center:
public void RegisterForNotifications ()
{
var settings = UIUserNotificationSettings.GetSettingsForTypes(
UIUserNotificationType.Alert
| UIUserNotificationType.Badge
| UIUserNotificationType.Sound,
new NSSet());
UIApplication.SharedApplication.RegisterUserNotificationSettings(settings);
UIApplication.SharedApplication.RegisterForRemoteNotifications();
}
this call successfully trigger this method on AppDelegate
public override void RegisteredForRemoteNotifications (UIApplication application, NSData deviceToken)
{
var azureService = App.GetBackEndService ();
azureService.RegisterForNotifications (deviceToken);
}
RegisterForNotifications registers with azure notification hub:
public static async void RegisterForNotifications(this BackEndService service, NSData deviceId)
{
Microsoft.WindowsAzure.MobileServices.MobileServiceClient client = new Microsoft.WindowsAzure.MobileServices.MobileServiceClient (service.Client.ApplicationUri);
client.CurrentUser = service.Client.CurrentUser;
var push = client.GetPush ();
var tags = new List<string>() { App.GetBackEndService().Client.CurrentUser.UserId };
try{
await push.UnregisterAllAsync(deviceId);
}catch(Exception e){
var exp = e.Message;
}
await push.RegisterTemplateAsync(deviceId, NOTIFICATION_TEMPLATE, "", "NotificationTemplate", tags);
}
Now, when I send a notification and the app is on foreground the method triggered is this one (In AppDelegate):
public override void ReceivedRemoteNotification (UIApplication application, NSDictionary userInfo)
{
ShowAlerts (userInfo);
}
But when in background mode (for example when I press the Home button on the Iphone) nothing gets triggered
And nothing shows on the upper bar where the iOS notifications are usually shown.
I placed a breakpoint in ReceivedRemoteNotification, DidReceiveRemoteNotification and also on FinishedLaunching.
I properly set Remote notifications in Info.plist under Enable Background Modes
Can someone understand what I am missing?
I have an app that is listening in background and when the user clicks "send" it displays a dialogue. However I need to bring my app to foreground so the user answers some questions before letting the message go. but I haven't been able to do this, this is the code in my SendListener:
SendListener sl = new SendListener(){
public boolean sendMessage(Message msg){
Dialog myDialog = new Dialog(Dialog.D_OK,
"message from within SendListener",
Dialog.OK,Bitmap.getPredefinedBitmap(Bitmap.EXCLAMATION),
Dialog.GLOBAL_STATUS)
{
//Override inHolster to prevent the Dialog from being dismissed
//when a user holsters their BlackBerry. This can
//cause a deadlock situation as the Messages
//application tries to save a draft of the message
//while the SendListener is waiting for the user to
//dismiss the Dialog.
public void inHolster()
{
}
};
//Obtain the application triggering the SendListener.
Application currentApp = Application.getApplication();
//Detect if the application is a UiApplication (has a GUI).
if( currentApp instanceof UiApplication )
{
//The sendMessage method is being triggered from
//within a UiApplication.
//Display the dialog using is show method.
myDialog.show();
App.requestForeground();
}
else
{
//The sendMessage method is being triggered from
// within an application (background application).
Ui.getUiEngine().pushGlobalScreen( myDialog, 1,
UiEngine.GLOBAL_MODAL );
}
return true;
}
};
store.addSendListener(sl);
App is an object I created above:
Application App = Application.getApplication();
I have also tried to invoke the App to foreground using its processID but so far no luck.
i have managed to achieve something similar to what you're describing but the difference is, my dialogs are displayed asynchronously, which might actually be easier... so in your case..
the first i could suggest you try is get the event lock before pushing the screen, ala:
synchronized(Application.getEventLock()){
final UiEngine ui = Ui.getUiEngine();
ui.pushGlobalScreen(theScreen, 1, UiEngine.GLOBAL_MODAL);
}
I would also just create a custom class of type MainScreen and push that instead of plain Dialog.
There, that's better (now with code formatting).
public class MYSendListener implements SendListener {
private UiApplication _myApp;
public MySendListener(UiApplication myApp) {
_myApp = myApp;
}
public boolean sendMessage(Message m) {
...
_myApp.requestForeground();
}
}
Cache your app instance inside your send listener when you construct it, and use that when sendMessage is fired.
Application.getApplication() only gets you the app of the calling thread.