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Android is Google's open source OS and system for smart phones and tablets. Use this tag for software engineering questions about Android; for user questions, visit our sister site Android Enthusiasts Stack Exchange.

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I am building an Android password management app, where passwords are locally kept for security reasons. The network endpoints are only for creating an account, email verifications etc. I want to ...
dev4Life's user avatar
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2 votes
2 answers
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I'm designing a password manager app for Android that prioritizes offline first security the idea is to store the vault locally and avoid any cloud dependencies during normal usage. However, I'm ...
dev4Life's user avatar
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I have done mostly machine learning with big data, GPUs on EC2 VMs, K8S clusters etc. But this new assignment is on the other end of the scale. Basically, it is a time series forecasting and ...
Della's user avatar
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181 views

I have multiple Flutter Android app projects that have different compatibilities of Java. Now, what should I do if I am developing more than one project simultaneously? If the first one uses Java 17, ...
DevQt's user avatar
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1 answer
182 views

I want to develop a miminal app for iOS and Android. Basically, I want to have a widget (or similar micro-app) that displays how many items I have in a list. If I open the widget, it just opens a ...
Chaos Crafter's user avatar
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Given that there are no checked exceptions in Kotlin, are Result types the correct way to indicate an exception occurred to the caller? For example, I have the following function in my code: suspend ...
Adam's user avatar
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I have a repository which reads and writes to Firestore, and some tests to make sure data is sent and comes back in the correct way. In order to test this I added a protected function which returns ...
Adam's user avatar
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98 views

Our android application is built on java. And while sending push notifications we're using tomcat as a server. And it is doing more harm than good. Currently all the push notifications (FCM/APN) are ...
tuck_y's user avatar
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Does it violating any conventions? Is it acceptable by MVVM? I have to separate the local data repository and online repository, but for login I have to use multiple repositories for getting response ...
Бодя павук's user avatar
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I'm in the mobile development domain and I use semantic versioning to version my releases. I keep both versions the same as long as new builds are released for both iOS and Android platforms at the ...
Isuru's user avatar
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I am trying to migrate to Jetpack DataStore from good ol' SharedPreferences and there is one thing I am struggling to come to terms with and that is the amount/size of the data pulling out of ...
TheLibrarian's user avatar
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So, recently I have been looking into developing apps. I joined a school group who wanted to develop an app, problem being that I had an Android phone and my friends all had Apple phones. I know of ...
Trey Freeman's user avatar
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ViewModel has Two-way data binding with UI which means UI can access the data from ViewModel and can update the view models data. The Model has one-way data binding and is only supposed to respond ...
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With the purpose of learning Hilt I started "migrating" my multi-module Kotlin app from using classes with static methods as helpers to Hilt injection. After a lot of headaches, now ...
Diego Perez's user avatar
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I've already read this carefully, but still need more clarification. I'm not new to dependency injection, but new to Hilt, and trying to implement Hilt in my multi-module app. The reason? I currently ...
Diego Perez's user avatar
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13k views

I understand that a SocketTimeoutException (I'm in Java, but I guess it's the same in just about every major language) happens after a server or client doesn't respond after a period of time, let say ...
Mickael Bergeron Néron's user avatar
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550 views

I have been working on an Android application for some time, and ever since the beginning I've developed a practice of splitting my class's (mostly activity/fragment) code up into multiple files. This ...
thebluepandabear's user avatar
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This blog on "Clean Architecture" describes how to build a modular Android application along with using Clean Architecture. In that example project, the author places the business logic in a ...
Sourav Kannantha B's user avatar
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377 views

First an foremost I would like to apologise if this is a trivial question, however it has been costing me a few workdays worth of freetime and I am appearantly too incompetent to figure this out ...
MoustacheSpy's user avatar
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768 views

I want to perform some operations on data class fields before accessing them and I am confused about which approach I should follow. I want to write code so that it makes sense to everyone and follows ...
Lokik Soni's user avatar
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1 answer
1k views

Scenario: A very simple android app needed to be developed. It has just one screen with a list of items. Each item has a label and an icon. We fetch the item list from the server, and the server ...
Kashan Danish's user avatar
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2 votes
1 answer
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What would be a secure way of storing client secrets used for authentication (webservices) in Xamarin/Android apps ? Secure Storage, which interacts with Android Keystore, seems very useful for ...
asyncful's user avatar
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i want to set up basic login page in xamarin.forms. There is no username/password, just a simple pin so far i have 3 pages to do this Sign-up Pin page Sign-up Confirm Pin Page (re-enter pin to ...
Dan's user avatar
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766 views

I am creating an Android application that sets alarms based on the String date of a list of Objects (PendingIntents, with each taking in an id, that is an integer). In order to cancel the ...
Adam Lee's user avatar
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In our organization we sometimes have to create a poc (proof of concept) to either validate or invalidate the way to go. Currently we're having a discussion around how to embed this within our ...
Baklap4's user avatar
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593 views

I am trying to implement Clean Architecture on my Android App with standard MVVM components. Almost every example I have found deals with simple business logic, i.e. simple CRUD operations over data ...
daneejela's user avatar
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1 answer
397 views

I have two audio clips: Source of truth Recording of user I want to compare the two, testing if they are similar enough, removing accents, etc. Any idea how I could do this on Android? To add more ...
moinudin's user avatar
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79 views

I want to get help from you all about building an android app that is capable of logging daily journal type data. I want to have these feature primarily in the app: Capable of logging the daily logs. ...
Sans's user avatar
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On Android, the "Power saving" option within the location settings means that wifi and mobile networks are used to determine location. What data points from these access points does it use ...
Richie Bendall's user avatar
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95 views

I have a mobile app (iOS and android compatible) that needs to know if it's far or close to the user's laptop/ desktop (e.g. whether it's within 5 meters or not). I need to make it secure such that ...
ShadyStego's user avatar
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1 answer
45 views

Goal: Have a common and same menu content link (for instance Home, about, consumer product, support) when you are using Angular, NativeScript and Android. Background: The menu contain seven different ...
HelloWorld1's user avatar
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349 views

I'm trying to create an android application for personal use to do the following: Get ads from the Facebook ad library (commercial ones) not the ones with politics topics etc. and then insert them ...
Rany's user avatar
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-2 votes
1 answer
170 views

Is using System Hungarian Notation for Android UI components (Views) valid? I mean using it ONLY for Views - no strSomething, boolStuff or similar names. For example, tvDescription (TextView), ...
Anxxy1's user avatar
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2 votes
2 answers
500 views

I have some methods in my code that essentially hide/show some Views, like showTitleHideBody(), showBodyHideTitle(), etc. They just change their Views' (tvTitle, tvBody) visibility. Initially those ...
did_attics's user avatar
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-3 votes
1 answer
57 views

For my project I need to use same algorithm for both web and Android application. I thought about handling the algorithm server side but I feel this would put too much unnecessary load on the server ...
TheRiverNorth's user avatar
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778 views

Requirement I am currently working on an android application that uses MVVM, live data and databinding. I have a use-case where I need to show a Comment button in multiple screens in my android app. ...
Anirudh's user avatar
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I get that a front-end isn't secure on the web because one could theoretically access the front-end code by opening dev tools and changing the code. Do I also need to be careful about security for a ...
Gwater17's user avatar
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-4 votes
2 answers
112 views

I am trying to understand how MVVM works. Here are two examples (in Andrdoid) on how I understand it should work, please tell me if I understood correctly. I currently want to make a list of ...
AdrienM's user avatar
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1 vote
3 answers
729 views

I'm trying to make a sports stats app in Java/Android + Realm. I have the following classes: Season Player Matches I would like the Season to contain a "list" of all the players that played that ...
musicalears's user avatar
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3 answers
297 views

On Android, do people create separate apps accessing the same database? For example an app that has users, producers and a customer support. How can one decide if it makes more sense to have a ...
Manas Sarma's user avatar
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1 vote
2 answers
360 views

I understand an interface is a contract and if a class implements that interface, it must define those abstract methods from the interface. What I don't understand is, how is data passed between two ...
Peter G. Williams's user avatar
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1 vote
0 answers
385 views

I am working on learning native iOS development in Swift, and I am trying to find something that is similar to what I've learned in Android development with Kotlin. In particular I am referring to ...
papafe's user avatar
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2 votes
3 answers
758 views

This is for an Android app, but I think the question applies to any software designed with a service layer. Our app is structured with a presentation layer that handles the UI and a service layer ...
fluidj's user avatar
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-1 votes
1 answer
61 views

I'm working on making a product for tracking workers/staffs locations and in that case the application need to be able to run on the phone for at least 10 hours without the phone suddenly closing the ...
SmallDev's user avatar
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1 vote
1 answer
665 views

I'm trying to apply Clean Architecture to a mobile Android App, but I still have some doubts about how to manage API calls. Currently, the classes are structured like this: View -> ViewModel -> ...
Rod's user avatar
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2 votes
4 answers
528 views

I was playing one of my favorite games from Supercell, and I imagine it’s a rather complicated game, and it stems across the two main mobile platforms. My question is, do the developers write the ...
MZawg's user avatar
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-1 votes
1 answer
1k views

I have this project with MVVM and clean architecture well implemented but I've decided to split it into modules. Right now I have: apimodule apimodule: with the retrofit dependencies app: with the ...
kirchhoff's user avatar
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-2 votes
1 answer
438 views

I use XAMPP to host an Apache web server and a MySQL database. Most of the data processing is done on the user's mobile phone. After a certain activity, information of the user is sent to the web ...
santa's user avatar
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0 votes
0 answers
101 views

i have a confusion about what code should be placed in view and what in viewmodel for example click events here is a snippet code of google ToDo app example for showing application architecture (...
hamid_c's user avatar
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-2 votes
1 answer
88 views

I had a question about big scale projects. what if the team decides to change a library and therefor the codes should be changed. for example what if the team wants to change the picasso library to ...
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