No success or error callback - Testing on Samsung S4 & S6

[WHarris22]

I have an Ionic app which uses this plugin to store data in a single table and I get an issue where I execute a query on the table and I receive no success or error callback instead it just hangs. It has happened on a Samsung S4 and S6 but I dont have a IOS test device so cannot confirm if its the same for IOS as well.

Closing the app and re-opening it opens the DB again and things start working again.

I have no idea what chain of events cause this (it just seems random) so replicating it is hard but my app consists of inserting a single record into said table, selecting ALL from table, updating a single record, and deleting a single record.

Also, it doesn't happen very often so 90% of the time the queries I have written will work as expected.

Just to note:

• I use the ng-cordova wrapper class $cordovaSQLite.execute() so that queries get returned as promises.
• I'm not working with much data either. It can happen with just 1-5 records in the table.

If you need more info or you want to see code let me know.

Update

I think I've found the cause for this. I have a list in one of my views and for each item there is an option to open it in the native Google maps app on the device. When I click this and then return to the app the database stops working. By not working I mean none of my queries return a success or error callback.

My code that opens the native map is:

 function OpenMap(sLat, sLng, eLat, eLng) {
        var googleUrl = 'http://maps.google.com/maps?saddr=' + sLat + ',' + sLng + '&daddr=' + eLat + ',' + eLng;
        window.open(encodeURI(googleUrl), '_blank');
}

[brodybits]

I have never seen an issue like this before and find it really strange. I wonder if the issue is specific to this plugin or if it may affect other plugins such as cordova-plugin-file. You may want to try closing the database before such a window "navigation" event and reopening it when you need to do the database operation.

[WHarris22]

It is really strange, would be good to know if anybody else has ever experienced this because I don't think any of my code does anything out of the ordinary.

I do make use of the cordova-plugin-file so I will knock up a test method and see what happens. I'm going to be out of office until the new year so won't be able to report back until then.

[WHarris22]

I just realised I've experienced something like this before when using the Google Maps JavaScript API in an Ionic project and it turned out I didn't whitelist the URL in the config.xml.

i've just added <allow-intent href="*" /> to my config.xml as stated in the cordova-plugin-whitelist docs for when you use window.open() and I think that has now fixed it, shall I delete this issue now?

[brodybits]

I documented this in README.md. I also published brodybits / Cordova-quick-start-checklist and brodybits / Cordova-troubleshooting-guide with tips to check the intent in the whitelist. Closing for now, please report if you find any related issues thanks!