I am working on a nativescript app for android and ios in which I have used REST APIs to store/get data in JSON format.
Based on JSON result from APIs sometime I need to show alert to the user.
It was working fine with Nativescript 4.1 but since I have upgraded to 4.2 app is unable to show alert boxs in ios. It shows the blank page and shows the following error.
(UIKitCore) Warning: Attempt to present <UIAlertController: 0x7fb5834eb000> on <UIViewControllerImpl: 0x7fb58659a670> whose view is not in the window hierarchy!
I have suspected that I am calling alert too early so I have tried to add timeout before alert but still it's the same.
if (result.status === 'E') {
setTimeout(function () {
const alertOptions = { title: 'Error', message: result.errMsg, okButtonText: 'OK', cancelable: false };
dialogs.alert(alertOptions).then(() => {
resolve('Error');
});
}, 700);
Points to note here is I am using nativescript-autocomplete component in one of my tabs. and this problem occurs only when user searches something using that component.
So it could be something related to that component.May be when autocomplete closes the modal, app looses the parent reference ?
Found an interim solution for now.
nativescript-fancyalert works like a charm. Will stick with that for sometime.
It is based on SCLAlertView for ios.
Related
I am using Firebase in my app and I've noticed when I am actively making changes and LiveSync updates the app it will sometimes say "firebase.init error: Firebase already initialized". This happens when the changes don't trigger a whole application restart (ex. an html file). It completely messes up my current authentication state and forces me to restart the app anyways.
Is there some way I can catch for this happening or prevent it? I can try to make a demo app for it, but I feel this might have happened to somebody already.
I am just using the standard firebase.init as shown in the documentation in my app.component, nothing special or different.
Instead of using on ngOnit of App.component, try to initlize firebase on app launch event.
applicationOn(launchEvent, (args: LaunchEventData) => {
firebase.init({
// Optionally pass in properties for database, authentication and cloud messaging,
// see their respective docs.
}).then(
function () {
console.log("firebase.init done");
},
function (error) {
console.log("firebase.init error: " + error);
}
);
});
I'm attempting to configure AppCenter.Distribute for in-app updates within my Xamarin Android app. Here is the very basic setup code, which I have in my main launcher activity's OnCreate method (AFTER the base.OnCreate call):
AppCenter.Start (Resources.GetString (Resource.String.appcenter_app_secret), typeof (Analytics), typeof (Crashes), typeof (Distribute));
I was able to get the in-app updates to supposedly initialize. When I first install and open the app, it shows a browser window for one second that says "In-app updates enabled! Returning to app in 1...", then it redirects back to my app. Unfortunately, when I then bump the version name and code and distribute a new build, I don't get a dialog within the app prompting me to update to the new version.
I even tried handling the Distribute.ReleaseAvailable action and showing a custom dialog, and that action isn't invoked either:
Distribute.ReleaseAvailable = OnReleaseAvailable;// Called before AppCenter.Start
private bool OnReleaseAvailable(ReleaseDetails releaseDetails)
{
// Show custom dialog.
Droid.ApplicationContext.Activity.CustomDialogBuilder().Show(new NotificationArgs
{
Title = "New update available!",
Message = "A new version of RPR Mobile, {0} ({1}) is available. Release notes: {2}"
.WithFormat(releaseDetails.ShortVersion, releaseDetails.Version, releaseDetails.ReleaseNotes),
PositiveButtonText = "Update",
PositiveAction = () =>
{
// Notify SDK that user selected to update...
Distribute.NotifyUpdateAction(UpdateAction.Update);
},
HideNegativeButton = releaseDetails.MandatoryUpdate,
NegativeButtonText = "Postpone Update",
NegativeAction = () =>
{
// Notify SDK that user selected to postpone (for 1 day)...
// Note that this method call is ignored by the SDK if the update is mandatory.
Distribute.NotifyUpdateAction(UpdateAction.Postpone);
}
});
// Return true if you are using your own dialog, false otherwise.
return true;
}
I'm wondering what I'm missing. Some questions that may or may not be relevant...
Does it matter whether the AppCenter.Start code executes before or after the base.OnCreate call?
Does it matter whether the activity that AppCenter.Start is called from is running or finished? Because in our case, the main launcher is just a splash screen that closes after a couple seconds.
Is the App Center SDK supposed to poll every few seconds for an update? Or does it check only when opening and closing activities?
It turns out that you have to close and relaunch your app for it to check for new updates. The documentation could be more clear on this...
Im creating an Electron app. I save the user progress in a file. I want the app to show the usual 'Save changes before closing' when the user has not saved and tries to close the App.
I could show a custom dialog, however, I would want to do it the native way.
(Example: On macOS, when you edit a file, the red button changes, letting know the user that the app has unsaved content)
I know this has to be done probably inside the Electron's listener for a closing app:
app.on('window-all-closed', () => {
if (process.platform !== 'darwin') {
app.quit()
}
})
... preventing quit() from being called. And instead handling the unsaved file state and dialog.
PD: I already handle the logic to know whether the user has saved its progress or not. I just want to know how to set the 'Unsaved' state to my electron app and correctly handle it.
(The example is Visual Studio Code, which is also an Electron App)
I usually use a global variable to indicate changes had occured and for example in the case of closing the app:
Code in the main:
mainWindow.on('close', function (event) {
if (global.savetoask== 'Yes') {
event.preventDefault();
//send a ipc message to request a confirm dialog
.............
} else {
app.exit();
}
});
Do you know what could be causing the permissions request dialog on iOS to show behind the app? It actually flashes quickly and then goes behind. I have to press the home button to bring it to the front. Until then the UI is blocked.
I am using Everlive and I am calling the register method in the app's launchEvent as such:
var pushSettings = {
//iOS - specific settings
iOS: {
badge: true,
sound: true,
alert: true,
clearBadge: true
},
notificationCallbackIOS: function (userInfo) {
...
},
//Android - specific settings
android: {
projectNumber: '944301213976'
},
notificationCallbackAndroid: function callback(data) {
...
}
}
el.push.register(pushSettings, function (data) {
...
}, function (error) {
});
Thank you.
EDIT: I should add that I am testing on iOS 9.3.4 and right before the dialog goes behind the app, I get the following warning in the console: enabledRemoteNotificationTypes is not supported in iOS 8.0 and later. Not sure if it matters, but I wanted to mention it, just in case.
So, it turns out that it was a timing issue. I was running the code when the app was initializing. The popup will get displayed, but shortly after, the first screen (login in my case) gets initialized, stealing the focus from the popup.
Once I moved the code in a button tap event (after the screen loading was completed) everything worked as expected.
I am not sure if this is the best way to handle this. I am open for suggestions.
Also, you can see https://github.com/NativeScript/push-plugin/issues/38 for more info. Thank you Anton Dobrev for pointing me to the right direction.
I'm trying out PhoneGap 1.4 on Windows Phone 7.5 using jQuery mobile (1.0.1.).
Basic navigation is working, unfortuantely I can't seem to get alerts working. Neither alert("string); nor PhoneGap's navigator.notification.alert(message, alertCallback, [title], [buttonName]); get me any response. The PhoneGap test message is being displayed fine. This is the way I try to call it:
function init()
{
document.addEventListener("deviceready",onDeviceReady,false);
}
function onDeviceReady()
{
document.getElementById("welcomeMsg").innerHTML += "PhoneGap is ready!";
alert('test');
navigator.notification.alert(
'You are the winner!', // message
alertDismissed, // callback
'Game Over', // title
'Done' // buttonName
);
}
See this Google Groups discussion.
In short, Windows Phone 7 IE9 web browser doesn't support alerts, and instead you must use the PhoneGap Notification API, like this:
navigator.notification.alert("Message", callBackMethod, "Title", "Button Text");
For further information, see the PhoneGap Notification API.