QrScan | QR Code & Barcode scanner cross-platform application | Barcode Processing library

Shouldn't it be MyApp instead of _MainPage? _MainPage is not the Widget but the State.

As discussed in comments, a solution was to call the navigator.push when id == 2 within the onTap function.

You are multiplying the value on that line. This is the reason for the wrong result.

This can be achieve by using universal links. For simplicity and high level implementation I will recommend you to use Firebase's dynamic link product. It is very well documented and more over its free to use.

Before you began I think you might need apple developer account.

1. Create a project and an app on the firebase console.

2. From the left menu under the Grow section select dynamic links.

3. Create a domain as per your preferences e.g. https://yourapp.page.link

4. Now goto apple developer portal and edit your app id and enable associated domains for it.

5. Now open and select your xcode project under the project navigator section on the left side.

6. Then goto signing and capabilities section and click on add capability

7. Add the associated domains in you capabilities.

8. Then Add your created domain in it like this: applinks:yourapp.page.link

9. Make sure to add your team id and app id in the firebase console.

10. Now depending on your requirement you can create fixed dynamic link through firebase console or alternatively you can use their api to create links. in case your link is user specific or you want to add unique info in each link.

11. Now when someone click on the link depending on the platform the link behave accordingly as per the parameters provided during the link creation process.

These are just high level steps for detailed implementation and available options you can always refer to the dynamic link documentation

Please check your manifest code again, you have doubles there.

This two are doubles.

If I understood correctly, you just want to append another input to the div. In that case you can just add another input with a different variable name (input1 here) and append it to the div.

you can refactor your code as follows

You can use package flutter_linkify https://pub.dev/packages/flutter_linkify

and url_launcher https://pub.dev/packages/url_launcher#-installing-tab-

I have made some changes in your code

I just looked through your code, its seems pretty well written.

That last commit where you tried to implement it has created a subtle bug:

With angular ngFor it loops on the actual tag you put it, not the contents, so you will end up with a list of ion-list, where what you had before was an ion-list with a list of ion-items inside.

You can use the ngIf on the same row as as the ngFor, and reference what you're looping on - if that's why you moved it.

For your actual issue I think you shouldn't be trying to turn the json file into some kind of database. Think of it more like a feed. You could easily put that json file onto a webserver and let every user load it in, and get automatic updates to the qr codes it supports, just by changing the web server file.

Putting individual users data inside isn't the right idea.

Instead you should look up a tutorial for Ionic Storage. It gives you a simple get set interface that, once configured in your project, will let you load the data in for that user only.

Keep a separate list. Your json has an id field so you can just make an array of scanned codes and push the id into it. Then for each item you can check if the current item is already scanned before by seeing if the id of the current item is in that array.

I've kept this as a general advice as I assume with it being a uni project you want to learn for yourself, not risk getting a custom written solution just handed to you and trying to submit that. If you get stuck on bits though I can update my answer.

Some other thoughts while I browse the code:

naming the boolean boolean is a shooting offence :P dont get into the habit of given awful names like that. Give it a descriptive name like isScanned

I see you have used some native toast plugin. Maybe you have a reason for that but there is actually a toast feature built in to Ionic. I'm not sure what your professor is grading you on but I would expect you to use the built in components where available.