Questions tagged [android]

Android is Google's software stack for mobile devices. For non-developer questions, see http://android.stackexchange.com

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10 views

Load data from server to populate in spinner

I'm learning ROS and I'm trying to populate data from my server to spinner. my JSON is: ...
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26 views

Functions to obfuscate and deobfuscate String. Am I missing out any edge cases?

I have 2 functions, which are going to hide/ unhide the multiple languages plain text. Security is not a major concern. The objectives are Just want to find a way to hide multiple ...
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Getting a list of waypoints assuming that there is a map

I'm a beginner learning ROS. I'm developing an android application that will control my robot and that includes getting the list of waypoints to display it to my spinner. How do you get the list of ...
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65 views

Night out with friends. Calculating the costs per person with Kotlin and Android

The following app basically sums up the costs for an evening and calculates the costs per person. The user can input the description of the costs [String] (for example, round one = Spare Ribs Place, ...
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1answer
52 views

Kotlin shared preferences

So I've written a class for storing user/device specific settings, but I've written the Kotlin pretty much like I would in Java: ...
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1answer
52 views

Creating many Android cardViews with different background colors [closed]

I have cardView in my android app with three child component. I set the background color for each components. Based on card INDEX I reset the background colors individually. If it's just one cardView ...
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39 views

Upload to FTP method for Android that mimics the command line mv

I've created a Java class for Android that connects to a FTP server (using the FTPClient library from commons-net-3.6) and ...
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53 views

ViewModels for image transformations

In my project I have a chain of Fragments where each one gets a bitmap, manipulates it, then sends it to another fragment for more processing. My fragment chain looks like this: CaptureFragment -> ...
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31 views

Updating UI in Retrofit onResponse

I have an Android project that queries the BART train API. I was curious if updating the UI inside the Retrofit onResponse method is correct or if there is a better way. Below is my code. Also, here ...
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31 views

Kotlin Android Request Client: want to make code more idiomatic

As part of an android app, I've written a simple wrapper that makes requests to an api and fetches stuff. ...
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26 views

Google Play billing + Firebase functions: Creating a one-time product, server-side

My Android app must request my Cloud Functions server to create in-app products at runtime ; then, the server responds with the created one-time product. I've written the server Cloud Function that ...
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1answer
42 views

Data class where i need to set values for different fields at different times

I am creating a request for an api using below class- ...
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1answer
67 views

TCP server in Android to continuously listen to an RFID reader

I have created a TCP server thread which I want to keep running and listening to the IOT device (an RFID reader). I have only one client. Please review my code and provide your feedback. Are there ...
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1answer
33 views

Android RecyclerView Popop Activity - 5 second popup time

So I've been working on a RecyclerView recently that's in a popup, and it takes a few seconds to popup with around 100 items. I want to make this faster, so any improvements on my code is appreciated :...
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1answer
51 views

Grid of radio buttons in Android

I want to display multiple radio buttons in a layout with multiline style as an item inside a RecyclerView. Look at the code I provided below and suggest how I can ...
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34 views

BASH script to obfuscate android/meterpreter payloads

I have written a little script that does a pretty good job of obfuscating android/meterpreter payloads. It will generate payloads or used supplied msf payloads while also injecting a custom icon. The ...
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31 views

Adapter for Spinner

I need to my spinner supported endless scrolling. As rule the user will have only 1 - 5 items but in very rare cases some users can have 100+ items that will be loaded from server by pages (15 per ...
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1answer
75 views

Optimize this code of adapter's overriden method getItemCount() [closed]

How can I optimize this code of adapter's overriden method getItemCount() into simpler form? ...
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61 views

Monitoring Services And Characteristics on React-Native [closed]

I have two questions for you about my code :) I'm creating an android to connect to ble device. I'm using ble-plx library. ...
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1answer
48 views

RecyclerView with different ViewHolder using generic

I have different ViewHolder for different Feed implementations. But I can't use the best practice of having each ...
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1answer
39 views

Android LiveData Shared between activities by Application Session

I'm developing an app that use socket to receive messages from a chat. I'm using an MVP approach and I store the data in a Singleton class named DataBridge like ...
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1answer
57 views

Google Maps API - reading locations from file and displaying markers on map

I'm working with Google Maps and want to read in location objects into the map. I'm loading them in from a .csv file and create Shelter objects for each location that I save in an ArrayList. To ...
4
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1answer
85 views

Android clock in/out app

I am writing a clock in / out and payroll app for Android. I am no professional, but I was hoping I could get some feedback on whether my code is spaghetti or not. This is just one of many classes &...
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87 views

Android+Firebase testing using Mockito

I have an interactor/usecase class in my application. My application follows MVVM architecture with interactor/usecases responsible for logic (e.g. get data from api-service, store in local-database ...
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36 views

Custom Security for API access from server to mobile application

i am not the best at security but need a custom way to securely store personal identifiable information like name, address etc - Can i please have some feedback on this custom code, from my ...
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151 views

Converting between cooking measurements

I've made an Android app that converts between cooking measurements, taking into account the type of product you use (that way it can convert between mass and volume by using the density). What are ...
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2answers
61 views

Android NDK Low performance

I am trying to write a NDK program for quicksorting an array. However, in my benchmarks C is doing consistently worse than Java, as indicated by my results: Java 1190625 C 1809218 Java 895104 C ...
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89 views

Implementing std::filesystem::remove_all() for Android

I needed to use some c++ code on both standard Linux and the Android variant, and the code will use filesystem library but it isn't yet in the ndk. So I'm making a one to use on Android It will be ...
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60 views

Firebase login/registration process for a dating app

I am developing another bigger project, I want to try a simple DatingApp and currently I try to develop a Login and Registration Form. There is no special register / login button, the code will later ...
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1answer
63 views

How to divide a large method into 2 smaller methods [closed]

I have created a method that is responsible for the creation and the saving of memes. This is a huge mistake because now I need to use 1 of those functionalities (creating) for a different purpose. I ...
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36 views

Load all data from cursor

I have a Db table: 'aid' INTEGER, 'tid' INTEGER, Which represents connection between activity and task, so multiple tasks could be connected to one activity ...
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1answer
90 views

Android Java Unit Testing model class

I'm trying to get familiar with unit testing. I never implement TDD previously, but I believe it's the best way to write software. So, here I'm trying to test my ...
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28 views

Sharing File (Content) without saving it before

I have a listview of PrivateFile objects which contain the fileId (int), fileName (String) ...
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92 views

Java Android Sudoku solver

I made a simple and non recursive Android Java Sudoku solver implementing Algorithm X with links inspired from dancing links. The code is on Github (start with the Solver class and the ...
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0answers
52 views

Listing YouTube videos using API with RxJava

I am new to RxJava and have the following code which I use to search YouTube videos via the API and ultimately display them in a list. ...
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37 views

Socket sending/receiving data

I am a beginner in Android and this is my first big project in it. I am trying to communicate with an STM Discovery board using an ESP01 module. Below is the client connection class ...
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1answer
63 views

Optimize Multiple Insert SQLite Coming From MySQL

I'm currently developing an app that requires sending and receiving of data from android studio going to MySQL and then data coming from MySQL will be saved from the SQLite. I need advice on how to ...
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1answer
75 views

Sending and receiving of JSON data to and from Android Studio

I'm currently developing an app that requires sending and receiving of data from android studio going to MySQL and then data coming from MySQL will be saved from the SQLite. I need advice on how to ...
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1answer
135 views

Destroy Singleton pattern in kotlin

I am practicing Singleton pattern in kotlin. It is a quiz app which has question tile with four options and one correctIndex. McqOldActivity.classs ...
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Appium automated tests for manipulating checklists

I am new to automation. I have automated few test cases for a mobile app using appium and wanted to know the areas where my code can be improved further. ...
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1answer
51 views

Simple Android Volley login request

I've made a simple login API request which gets a token as a response. I had to use Toast a few times. Is is possible to make it with only two ...
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56 views

Android - Notification service to handle background notification

PREMISE: I have zero knowledge of Java and Android development. I put this together in a couple of weeks. The code works. But I look forward to some feedback and to know how I can improve it. ...
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1answer
38 views

Method that Saves user text messaging draft [closed]

I am working on saving the text messaging draft of a user. The flow currently works but I am looking to make this block of code easier to read and smaller. Could anyone help me achieve this? ...
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1answer
46 views

Android TCP server that maps data to an object and sends it to a service

This is a code for an android thread. This is a tcp server and gets data from socket, maps it to an object and sends that object back to the main service. If there is anything I'm doing wrong or if ...
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101 views

Animated Button on Android using AfterEffects and Lottie

I have a question about my implementation of a "special" Next-Button. First I want to show you my AfterEffects file: So This Animation has 3 parts Green: Entry correct Red: Entry incorrect Blue: ...
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231 views

Retrieving date and time from Datepicker and Timepicker and then converting it to milliseconds

I currently have an Android Activity that allows the users to select the startDate, endDate, ...
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2answers
532 views

Call multiple asynchronous HTTP requests and wait for the result

I have a Repository class which looks like this: ...
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1answer
109 views

Adapter class to display songs in an Android ListView

I am learning Android with Udacity nanodegree (having no support) and this is my assignment of music app. It is just an interface and no music I have to add. So far so the app is running without any ...
3
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1answer
91 views

Card based game in Android

I am developing a card game in Android. This is my first time I am working in Android,. The game contains following features: It will be a 6 player game. There are two decks on the table, one with ...
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64 views

Getting Video file path from uri

I am using below code to get a video file path from uri. Need review for the following: 1.Code optimization 2.Crash(Code is working fine in the devices I tested but i need to make sure that it ...