How should I create and use an object for Android? [closed] - java

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I am going to be accessing an array of objects, that are saved to internal storage, throughout the Android Application. It will have things like nameString, any song chosen from the device, array of videos, and date of project.
I come from developing iPhone and iPad apps. Usually I would create an NSObject, but according to: android object oriented programming I should load this into each individual activity?

Why you don't use a simple SQL Database. Each row would have the information for one Object.
Just one possibility but I would think about it.

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Is it possible to call java functions with react native? [closed]

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I have an exiting Android app that uses Java and XML. I want to reface it, and i need informations.
This app use Android specification like the mobile position, modification of te current antenna (2G, 3G, 4G, 5G) ... and a local database with SQLite.
So I need to know if i can make my graphical interface with react and have interactions whith my java code to access to this Android properties. Is it possible to call java functions with react native ?
Can i use React or did i just have to use XML like i did before ?

Database for Android [closed]

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I am new to Android and searched for this topic on the internet but still not sure which would be the best choice. I am writing an app that shows users details about a movie. I want to add to this application a database that stores for each user their favorite movies, and movies they want to watch in the future. What would be a good choice for adding a database? Would a client-server architecture fit this app? (writing it in Java)
If you decide to implement a local database, I would strongly suggest using Room persistence library. However, if the data you wish to save is fairly simple (let's say it is an object with 2-3 properties), you could consider saving them to Shared preferences as json strings.

How can I extract data from one app to use in another app on Ubuntu? [closed]

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For example,there is an app called System Analyst that shows me how much data has been downloaded in the current session.I'd like to use this data in another app,which I want to write in C or Java.
Is this a bad idea?If so why?
Usually it's better to go to the source of the information instead of trusting some other application. In the case of data received and sent, you can get them directly from the kernel by reading /proc/net/dev.

Ideas for converting Android App project to pure java for desktop [closed]

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I have a huge Android app project, I attempt to convert it to pure Java, I think to include all classes that my new app need it like View , TextView, Activity , etc. I can get it from Android framework source code.
I know this idea will increase my app size, but it will save a lot of time and efforts
My Question: How successful that idea?
You should look into ARC:
https://developer.chrome.com/apps/getstarted_arc
This is a Android Runtime for chrome on desktops

How Store and Retrieve data in Android App Development [closed]

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I was wondering if anyone knows how to store series of data in an android app, and also how to call those data back (like a bible app or Hymnal).
Is it XML or a form of SQL?
Thanks.
If you are going to store/retrieve a small data (some variables) you can use sharedPrefrences and here is an example,but if you are going to store/retrieve big data you can use database SQLiteOpenHelper example.

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