Dynamic widget builder - flutter

am working on a time management app project in flutter I want the app to detect the apps installed on the user device and reveal them on the screen automatically, is there any way to do the front-end part of the work and how?

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Ionic capacitor hybrid mobile application

I want to create a hybrid mobile app using ionic capacitor. When user logs in the app should open the main angular app in a hidden webview to initialize the angular app. The webview should be hidden for this time. After this when a user clicks on any links in mobile app, it should open in the webview and this time the webview should be displayed. The webview should open in the app container and not in the browser window (like InApp browser). Please help me if anybody have explored this kind of solutions.
My existing app is built using Xamarin and its built on the above concept.
I have tried the InApp browser but it does not give a good impression to the end user expecting a complete mobile app.
What you want to do is more or less possible if I've understood you well. I've done it in my job. We have a ionic app, but then there are some native screens developed natively for Android (with Java) and iOS (with Swift). With ionic you can call native code from Javascript. For that you need to make your own local Capacitor plugin: https://capacitorjs.com/docs/plugins/creating-plugins
In a plugin, the ionic Javascript function will trigger a native function (Java/Kotlin for Android - Swift/ObjectiveC for iOS). Once there, you can freely create native screens (Android = Activity, iOS = Storyboard/Controller) and then launch your native screens in the app. In our project most of the app is ionic, but we developed our own native screens such as a PDF Viewer, a Web browser, a QR scanner, etc.
But an app is not like a website, an app is a stack of screens. Which means that everytime you access a new screen, it's added to the top of the stack and the user can go back to the previous one. So, ionic will launch first. Inmediately after starting the app (or whenever you want) you can move the user to a native (android/ios) screen. However, if the user presses the native android back button, he will come back to ionic. If you want to prevent that, you need to code that behavior yourself (google android prevent back button). Likewise, you "can't" make the user go from the native screen to ionic, you can bring him back to ionic by navigating back programmatically.
Perhaps you can also change the launch activity to use a different one, and then later launch the ionic activity with native code. But I haven't done this myself and it could break ionic, so I can't advice you through this path.
I hope my answer helps, but I'm not sure I understood what you want to accomplish.

Does Flutter app generates too much cache?

I am working on a flutter app and using basic widgets like BottomNavigationBar, ListBuilder, intro_slider(additional plugin) etc. When I swipe through slides, click on tabs, open pages using Navigator.pushNamed the app is generating cache. Is this because I am launching the app in a development environment or this will be the same for the final build.
Trying to find a better way for cache management that will not create an unnecessary heap of cache in users devices.
Thanks

Flutter Focus App That Is Not In Foreground

I'm using the URL Launcher flutter plugin to launch a browser with a url. How do I bring the Flutter app back to focus after viewing the URL?
When you use URL Launcher, you invoke and give control to the operating system. Only the user of the mobile device can navigate back to the Flutter app.
If you want more control, you should navigate to a custom native UI that you control, and which is part of the Flutter app itself. For an example of such interaction between Flutter UI and native UI see this:
https://github.com/flutter/flutter/tree/master/examples/platform_view

Sybase Unwired Platform Hybrid Web Container IPHONE BLACKBERRY

I am developing a application in Sybase Unwired Platform ,Hybrid Web Container. When I deploy it on Android it is working fine but when I deploy it on Iphone or blackberry I can see the menu items like back,next displayed on menubar and some on toolbar as it is in Iphone native application and the buttons on the screens are not working. I think its because of JQuery but is there any workaround to remove this menubar and toolbar and make it run properly.Thanks in advance.
I haven't tried it yet, but if you are in the last SUP version, it's supposed that you can have buttons on the screen to call SUP requests and operations without the need to add them as menuItems.
The problem with menu items is that they work different in each platform, and it's not recommended to use them anymore (even google said that), and it makes the HTML5 app less multi platform.
In my SUP apps, I hid the menuItem dynamically after the workflow initialization, and created a custom html button (using Custom.js) that calls the menuItem javascript function.

iPhone - Creating Home Screen for App that show icons to launch other app with in app

I just wanted to know how can I create Home Screen after launching my App, that shows multiple icons/app buttons to launch other apps, just like the way iPhone home screen has multiple icons/pages that list app icons.
My app will have different features like map,dining, weather etc.
Thanks
This type of functionality is not allowed by Apple. That is any sort of desktop replacement or dashboard system is explicitly prohibited.
However, if you check out the Facebook iPhone app, you can see that you could do something similar. That is one app showing a grid of icons. Each of the icon buttons launches a different view within the app itself.
This type functionality is allowed and is provided by the three20 library:
https://github.com/facebook/three20
This library was spun off from code created in the Facebook App.