Can i check background running apps react native - javascript

I am developing a app in react native. While the app start any financial transaction it should scan if other application are running in the background or not both in iOS and Android platform?

I know it's been a year, but:
Detect when other Application is launched in React Native app
Due to security concerns, apps are "sandboxed". You can't tell what other apps are running on the device.
You can however see what apps are INSTALLED on the device, and you can do things like deep-linking to open other apps on the device.

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How to publish React JS PWA in Amazon app store?

I am creating a React JS PWA web app, so that the users can install it on their mobile devices. Now the client ask to find out a way to push these PWA apps to amazon app store. So my query is whether we have tools for converting the Progressive Web Apps as APK or HTML5 Web app files so that we can put them to amazon app store.
I googled a bit and I am confused, but I am not sure which one is the right one to use and whether we can publish a PWA app to the amazon app store
Any help on this will be very grateful.
Thanks.
PWA needs a browser to be executed. So if you want yo package your pwa as apk(android) you will need to implement a kind of mini-browser with pure android.
Fortunately, this task is very common and there are even online services to do that:
https://appmaker.xyz/pwa-to-apk/
https://pwatoapp.com/
Or if you know java:
https://github.com/xtools-at/Android-PWA-Wrapper
Or c++
https://github.com/RikudouSage/PwaToTwa
Or nodejs
https://github.com/pwa-builder/CloudAPK
You can use the Amazon Web App Tester to verify how your Web app behaves when Published to the Amazon App Store: https://developer.amazon.com/docs/fire-tablets/webapp-app-tester.html
If it performs correctly in the tester, you can then publish the URL directly or upload your files. The full process is described here: https://developer.amazon.com/docs/app-submission/publish-app-webapp-files.html

Can I publish a Cordova app for browser

I'm on a project cross-platform where the client wants a website, an iOS application and an android app. I chose cordova to realise it.
But I have one question, can I host my application like a classic website on a distant server ?
Maxime
While you might be able to reuse parts of your HTML, CSS and JavaScript for the website, Cordova apps run on physical devices like phones and tables and interact
(access device capabilities) with the underlining operating system like Android and iOS.
When you have an existing server-based web app, and you want it running in a Cordova app, you'll have to migrate it. Depending on what your application does you could use a thin Cordova client (think of it as a web browser embedded in a native app) that automatically redirects to your web site.
Link to officially supported platforms.
https://cordova.apache.org/docs/en/latest/guide/support/index.html
EDIT: the following is only for testing, not production
Cordova supports the browser platform.
By running cordova platform add browser you add it to your project and with cordova run browser you run your app in a browser. To run it in a specific port, you need to run cordova run browser -- --port=1234.
You can add, build and run the iOS and Android platforms in the same project.
Take a look here https://www.raymondcamden.com/2016/03/22/the-cordova-browser-platform/

Get user location while app is background in cordova android application

I am developing location based android application using cordova (ionicframework+angularjs).So when app is in background i have to get the userlocation ,so that i can provide location based push notification.
Is that possible to run the app in background?. Please help
In your requirement you need to use android Services.Otherwise you cannot run GPS Tracker in background(When app is in background). So if you need to run background service i think its not possible to do with ionicframework.Because its not native app development tool its only working with front end like browser base application. So you have to use native application development tool.

HTML5 Android Development

I am interesting in making an android application, while my primary hobbies is web development. Now the thing that is confusing me is that people make applications in HTML5/CSS3/JavaScript languages, are those apps running on web browsers on android mobile or running like an installed application on android?
Well you can design and develop your app in 3 ways
Native: full Java code in Android case, or Objective-C or Swift now in iOS
Web: HTML5, CSS3, JavaScript
Hybrid: a mixture of the two
If you are a web developer you can design your app in HTML5 and then use a wrapper like PhoneGap or Apache Cordova which will simply wrap or package your app in a WebView (a Webview is like a simple browser inside a native app).
Then you will have your APK like any other app in Google Play, so yes it's a full application that can be installed, updated and deleted of course, in any Android device
But there is a difference between the two, like the speed varies depending on the app type:
previously, web apps couldn't gain access to the accelerometer, camera, gyroscope etc, but now with the bunch of APIs available, you do have the ability to access them in very simple ways.
A full definition of a webView
The WebView class is an extension of Android's View class that allows
you to display web pages as a part of your activity layout. It does
not include any features of a fully developed web browser, such as
navigation controls or an address bar. All that WebView does, by
default, is show a web page.
More info about WebView Here
Yes they can be opened in web browsers. Those mobile application that is written in HTML5 are really web applications that have Mobile user interface. You can create and experience these projects using Visual Studio 2012. Go to new project -> Web -> ASP.Net MVC 4 Web Application -> in "select a template" choose Mobile Application

mobile web app to detect iphone app version

I have a mobile web app that works in conjunction to a native app (downloaded from the app store). When I run the web app, I am detecting if the native app is installed when the user clicks on some buttons. So far so good. Now, how can I detect which VERSION of my app is installed? Is this even possible?

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