Need android app developed jobs

I am in need of a skilled developer with experience in creating automated trading algorithms for the Interactive Brokers platform. The goal here is to design an algorithm that will execute trades according to a set of custom rules I've established. Key requirements and expectations for this project include: - The algorithm needs to be developed in Python. - The trades should be executed on the Interactive Brokers platform and plot custom rules on Trading view. - The algorithm should follow a set of custom rules that I will provide. These rules are specific to my trading strategy and are not based on common indicators such as Moving Average Crossover or RSI. - The trades should be based purely on the custom rules and should not involve any manual intervention. - It shou...

Don't show the whatsapp app or atleast hide the numbers and don't allow users to access chats. Only allow whatsapp calls with no number visibility and settings change. The goal is to allow users to make whatsapp calls only to the saved contacts only. So can you modify whatsapp or run in hidden mode to use it using another app.

We are seeking an experienced Azure/M365 developer to work on a project that involves fuzz...Breakdown: Develop a fuzzy matching module to compare data across 15-20 points of data Implement additional matching algorithms (e.g., exact matching, regex pattern matching) to handle various data formats Develop 15*3 ETL processes to handle different data formats and request codes Integrate the developed modules with our Azure/M365 environment Configure data storage, authentication, and authorization Perform thorough testing and debugging of the developed modules and ETL processes Deliverables: Fuzzy matching module Additional matching algorithms 15*3 ETL processes Integrated Azure/M365 environment Tested and debugged code Estimated Ti...

In my platform I've encountered a problem. My website's sign-up process, developed on WordPress, is currently returning an error when users attempt to submit the form. Additionally, the sign-up process is integrated with social media logins. () Your mission is eradicating this issue so that users can smoothly sign up without hiccups. Your proficiency in WordPress is key in this job. Please specify how many hours will take you to solve the problem. Website developed in english. URL to replicate the error:

I have an existing Python script that needs to be ported to a console app. Key Requirements: - Porting of the existing Python script to a user-friendly console app in Python 3.x - Implementation of input/output handling to ensure the app is interactive and easy to use Ideally, the developer should have: - Proficiency in Python programming and understanding of Python 3.x features - Experience with developing console apps - Strong skills in implementing user-friendly interfaces - A good understanding of input/output handling in Python As the original script has already been developed, the focus here is on the user interface and experience. If you have a good understanding of Python, experience in building user-friendly console applications, and a passion fo...

I'm in need of a skilled iOS developer who can craft a utility application centered around camera functions. Here are my specific requirements: 1. Diverse Filters: I want my app to provide an array of filter options to give users the flexibility to be creative with their photography. 2. Manual Controls: The app should give users manual control over exposure, focus, and other camera settings. 3. Video Recording: Beyond photo-capture capabilities, the software must also offer video recording. Ideally, I'm looking for someone who's experienced in working with iOS platform and has a strong knowledge of camera functions. If you've previously developed camera-based apps, that would be an additional plus. Please reach out if you are experi...

Looking for an experienced web developer to spearhead the creation of a robust travel booking platform from the ground up. The envisioned website aims to serve a diverse clientele, offering seamless booking experiences for flights, hotels, cars, and c...access information, enhancing the overall travel experience for users. Successful candidates will possess a wealth of expertise in full-stack web development, with a keen eye for UI/UX design principles. Proficiency in platform integration is a must, including in-depth knowledge of GDS and the ability to seamlessly integrate Amadeus and Sabre APIs. Experience in mobile wallet integration for both Android and iOS devices is highly desirable. Join us in creating an innovative, user-centric travel solution that sets new standards in the...

I am in need of an experienced mobile app developer who can design and build a membership management application for both Android and iOS platforms. Key Features Required: - Development of a feature for member profile creation. - Implementation of a module that allows users to select their subscription plans. - Integration of a safe and secure payment processing system for membership subscriptions. Ideal Candidate: You should have a strong background in mobile app development with a portfolio highlighting your experience in building membership management systems, payment processing integration and subscription model implementation. Past experience in developing Yoga or Fitness related mobile apps would be a plus. Bring your creativity and technical skills...

...application's core functionality. Users can input a specific amount of money into the application, and the application will distribute this amount on a daily basis. The application charges a 4% fee for facilitating these transactions. The distributed amount can be used for daily expenses, savings, or investments, depending on the user's preferences. 3. Architecture: The application will be developed using the Go programming language (Golang) for the backend and Angular for the frontend. This section outlines the architectural design of the application, including the components and their interactions. The backend will handle the financial calculations, transaction processing, and data storage, while the frontend will provide a user-friendly interface for interacting ...

I'm in need of an Android WearOS app that can help me monitor flight progress and altitude on my smartwatch. I want to be able to view real-time flight tracking and altitude display. Key Features: - Real-time Flight Tracking: The app should poll one of two APIs every 10 seconds and update. - Altitude Display: It should track the aircraft's altitude at any given time. - Time Remaining: I would like an estimate on the time remaining until the flight's expected arrival. - Arrival and departure city codes should be displayed. - Local time: It should show the 12hr local time with city code under and 3 letter timezone in parentheses. The ideal candidate for this project should have experience in Android WearOS app development. Techni...

Looking to develop an Android app but the specific nature of the project remains flexible. Professional and creative input from the freelancer is highly encouraged. - Desired Skills and Experience: - Extensive experience in Android app development - Strong understanding of design aesthetics - Ability to suggest and implement app functionality based on brief - Previous successful mobile app projects Remember, the exact nature of the app is not yet set in stone, so your ability to conceptualize and develop a successful Android app based on a broad directive is pivotal to your success on this project.

I'm in need of an IT specialist with a strong background in software development. The project aim is to develop an Android mobile application. Expected Skills: - Expertise in Android development - Proficient in Java and Kotlin - Strong understanding of Android SDK - Familiarity with RESTful APIs to connect Android applications to back-end services - Understanding of Google’s Android design principles and interface guidelines. Prospective freelancers should have a portfolio of previous experience developing mobile applications, specifically Android-based. The ability to effectively communicate the progress and potential issues is vital. Propose your plan of action to express your understanding of the project.

I'm seeking a reliable and skillful Mobile App Developer specificalized in Android to create a seamless and dynamic business app. This project requires: - Strong proficiency in Android App Development. - Familiarity with business-oriented apps. - Exceptional technical skills and portfolio of previously developed apps. - Ability to integrate various data sources and databases into a single system. - High standards for maintaining privacy and security of sensitive company information. This project provides an excellent opportunity for those who have a deep understanding of business operations and can translate that knowledge into functional and efficient mobile solutions. Show me what you can bring to the table, and let's create a game-ch...

I did a Android app with MIT appinventor that i need to convert to iOs. The app has only 3 screen (the 1st with logo, second is the programm, and the last is the user manual), just need to communicate with the Bluetooth (a BLE 4.0) to send a simple string to a Arduino board. The app is really easy, i attached a screenshot of the main page. - The Bluetooth button (when click) will show a list of all available BLE. - The red "Non connecte" will go in green and "Connecte" when connected, and when click will disconnect the Bluetooth. - The 1st ok button (at "Reset réglage d'usine") will send a string by bluetooth to put all value at factory. - The slider select a value between 0 and 100. - The button ok bellow ...

I am in need of a skilled PowerBi expert who can assist with a variety of tasks that include: - Data visualization - Dashboard creation - Report generation TASK student must work on a real Business Intelligence Project demonstrating understanding and application of the concepts and exercises discussed and developed in class. The project requires students to: Prepare a complete report with at least 4 pages (painting) taking into account each and every one of the following points: 1. Model 2. Visual 3. Format 4. Colors 5. Graphs 6. Navigation 7. Buttons and bookmarks 8. Tooltips 9. Filters and Slicers

I'm looking for a Flutter developer who can provide one-on-one tutoring in Tamil. The goal is to elevate my skills to an advanced level, particularly in optimization and deployment techniques for both Android and iOS app development. Key Requirements: - Proficiency in Flutter: You should have extensive experience with Flutter app development, capable of teaching at an advanced level. - Communication Skills: Fluency in Tamil is essential, as the sessions will be conducted in Tamil. - Teaching Experience: Prior experience in tutoring or teaching Flutter development is highly preferred. Preferred Learning Format: - One-on-One Sessions: I prefer live, one-on-one sessions to enhance the learning experience. This project is ideal for a Flutter expert who not only has...

I am looking for a proficient app developer to create a TV application that will function on Android TV, TizenOS (Samsung), Fire TV (Amazon), and LG Smart TV. The ideal candidate for this job should be experienced in developing apps for multiple platforms. Description We're seeking a skilled freelancer to develop a TV app for Android (v5-13), TizenOS (Samsung 2012-2024, Tizen 1-8), Fire TV, and LG platforms. Skills required: - TV app development - Android - TizenOS - Fire TV - LG - User interface design - Performance optimization - Problem-solving - Strong communication skills App Features: Responsive UI for various screen sizes Displays Live, Series, and Movie content (data from web service) User favorites list (local & online ...

Require a mobile app for voice reminders to be remade. I have the APK for the app I want remade. I want the new app to work on Android and Apple. The job is to literally copy an existing app that has been discontinued and make a new one. The App is a simple Voice Reminder App.

I need a skilled developer proficient in *Next*, *React* and *Flutter*. Although I didn't detail specific functionalities to be developed in React, I expect that your expertise will guide the process. Due to the lack of provided features for the Flutter application, you should be able to propose efficient strategies and introduce standard app features, considering current trends in app development. Proficiency with user interfaces, third-party API integration, data visualization, user authentication, geolocation services, and push notifications would be advantageous. Your role involves not just coding but also contributing to design and feature ideas. please start proposal with "SWEET". And please explain about your skill carefully, if you want b...

I am looking for a Racket ...and LL1 grammar. The main goal of this project is to develop a simple grammar for parsing and code generation. Key Requirements: - Proficient in Racket: You should be well-versed in Racket programming language. - Grammar: Experience in developing grammars, especially LL1, is essential. - Code Generation: The ability to generate code based on the parsed grammar. - Complexity: The language to be developed will be simple in nature, with less than 10 rules. This project will involve: - Crafting an LL1 grammar for the simple language. - Implementing the parser for the grammar. - Developing a code generator based on the parsed language. If you have experience in Racket, grammar, and code generation, and are interested in this project, I would love to discus...

I need an experienced blockchain developer who can create a social media decentralized application (dApp) on the Desmos network blockchain. Requirements: - Expert knowledge of the Desmos network blockchain - Proficient in Decentralized applications (dApps) development - Prior experience in creating social media dApps will be a major bonus. Your role will involve: - Designing and developing the social media dApp on Desmos network. - Ensuring the dApp is fully functional and user-friendly. - Address any potential technical issues that may arise. Please provide a portfolio of previous dApps you've developed, particularly any social media dApps. This role is perfect for a blockchain programmer who values creating impactful social media platforms. Looking forward to your p...

I have a readymade Android app that requires configuration and customization. This is a straightforward project that doesn't involve any coding or content creation. Key Requirements: - Configure an existing Android app - Customize it for English language only - Ensure the app's primary content is in the form of radio Ideal Skills and Experience: - Experience in configuring and customizing Android apps - Knowledge of app localization and language settings - Understanding of radio-based content management Please note that this is not a full app development project; the app has already been created. Your role is to configure it according to my specifications.

Hi abdoalsharif, I noticed you posted a following project ( https://www.freelancer.com/projects/iphone-app-development/commerce-Website-Android-iOS-App-38076263/details )

I'm looking for an experienced Excel and PineScript expert to create custom Excel formulas replicating my developed PineScript indicator. The indicator performs functions for Bollingerbands and Keltner Channels. The task will be to incorporate Open, High, Low, Close prices into the Excel formulas. Please note, data collection or data visualization is not required for this project. To give your best, you should possess an advanced understanding in: - PineScript - Creating complex Excel formulas Looking forward to your informed bid.

...innovative Islamic prayer app with e-commerce functionality. Key Features: - Prayer Time Notifications: The app must notify users of prayer times. - Qibla Direction Finder: It should include a reliable Qibla direction finder. - Quran Recitation: The app should have a feature for users to listen to Quranic verses. - Tasbeeh: Implement a digital version of the tasbeeh for users. - E-Commerce: I'd like the app to include e-commerce functionality with the following features: - Product Catalog: A user-friendly display of available products. - Shopping Cart: Users should be able to add items to their cart. - Payment Gateway Integration: Secure integration of a payment gateway for transactions. Target Platforms: - The app should be develop...

I'm in need of an expert Android developer who can create a sleek, small, and round button in XML for my application. The button should have the following features: - The button should be fully clickable and functional. - It should change color upon being clicked. - The button should also display text on hover. The ideal candidate for this project should have: - Extensive experience with Android XML design. - A strong understanding of UI/UX principles. - Proficiency in creating interactive elements. Please respond with examples of your previous work in Android design, particularly with buttons, and any relevant experience you have.

I require an intriguing PowerPoint presentation developed to highlight the success of our past vendor sponsorships for our tournament. This presentation will serve as a critical tool for gaining more partnerships in the future. Key Aspects: - The presentation must feature over ten vendors who have previously sponsored our tournament. - Success metrics from these sponsorships should be presented, specifically focusing on achievements like funds raised and the demographics reached. - Emphasize on the events or initiatives made possible through the sponsorships. Ideal freelancers should have: - Strong PowerPoint skills and proven graphics design experience. - Experience in data visualization, to compel potential sponsors with achievement metrics. - Background in marketing or sale...

I need a skilled developer who can assist with porting my already-developed Unity PC game to the Nintendo Switch platform. The ideal candidate has the following: - Proficiency in Unity game development, showcased by the creation of at least one PC game. - Expertise in games porting, candidates must have experience with the Nintendo Switch (sdk), this is a hard requirement. - Knowledge of multiplayer functionality as the existing PC game includes a multiplayer feature that should be maintained in the Switch version. The expectation is to maintain the same functionalities, graphics quality and user experience in the ported version. If you are competent, diligent and excited about expanding games into new platforms, bid today.

Hi all, we currently have a website developed in WordPress which is very slow. i would like your reccomendation on a platform for new website to be fast and have many features: pricing specials, qty discount, subscription, shipping canculator sales, whatapp copnnection and more. current website: it can be on Shopify, Wix or custom. I must have the ability to modify the website, products, SEO, add pages.. Key Requirements: - Integration with PayPal, Stripe, and Square payment gateways - User-friendly interface and seamless navigation - Inventory management system - SEO optimization - Responsive design for mobile and desktop Ideal Skills and Experience: - Proficiency in E-commerce website development - Previous experience with integrating multiple payment gateways - Strong

I'm looking to enhance my existing e-commerce website to offer a more seamless shopping experience for customers. Simultaneously, I want to create an iOS & Android app to expand my market reach. Key Project Details: - Existing Website Enhancements: The current website needs improvements to enhance user experience and functionality. This includes but is not limited to, smoother checkout processes, better load times, and more visually appealing design. - iOS App Development: I'm looking for a skilled developer to design and implement an iOS app that mirrors the website's functionality. The app should be user-friendly and offer a seamless shopping experience for customers. Ideal Skills & Experience: - Proficient in e-commerce website...

We are in need of a skilled freelancer who can develop a listings website that will be used for advertising local businesses. The main feature of this platform will be an interactive mapping system. Users should be able to interact with the map in multiple ways, including filtering businesses by category, searching by business name, and viewing promotions and deals. Key Features: - Website should be designed to display local businesses - Implement an interactive mapping system - Allow users to filter businesses by category - Include a search feature by business name - Enable users to view promotions and deals Each local business listing on the website should display a comprehensive set of information, including: - Business name and contact information - Business descrip...

...(España) hence the writing in Spanish, BUT, if you have great experience or have developed (your team) an application exactly the same or very similar to or similar, please apply.** Descripción del proyecto: Estamos desarrollando un e-commerce de muñecas sexuales que va a ir más allá de todo lo existente en ese campo. La particularidad (y este proyecto) es que: Además estamos desarrollando un sistema de inteligencia artificial para la interactuación los mismos. En esencia virtual y presencial es lo mismo, ya que lal plataforma de chat, más abajo explicada, es la que transfiere vía bluetooth la voz auriculares en el usuario o altavoz interno en la muñeca. Este desarrollo consiste en crear una websit...

I'm in need of a chart that can visualize real-time data on a web application. The chart should exhibit a scrolling behavior that's ensuring a unique user experience. you check this link for refference i want similar like this. Key Requirements: - The chart should be developed specifically for a web application - It must update every second to reflect the real-time nature of the data being visualized - The scrolling effect should be smooth and engaging, similar to the movement of a snake in a game Ideal Skills and Experience: - Proficiency in web development, particularly in creating complex, interactive charts - Experience with real-time data visualization - Knowledge of animation techniques and their implementation in

We are seeking Android Mobile App Testers to assess our latest mobile application. The primary responsibility is to register on the app and spend about 10 minutes exploring its functionalities to understand its features better. Your input will be crucial in enhancing the user experience. This brief assignment can be finished in less than 20 minutes, requiring only proficiency in mobile app usage. We prefer individuals with experience in mobile app testing who possess meticulous attention to detail and a passion for discovering new apps. To ensure comprehensive testing, we prefer testers with at least 3 unique Google accounts. The application has to be installed and tested for each of the available Google accounts. We kindly ask that you provide feedback...

I'm looking for a professional Android developer to create an app for brand promotion. The app should have the capability to customize templates, similar to the AdBanao and BrandsLive applications. Key Features: - Template Customization: The primary focus of the app will be to help brands create unique and visually appealing content. Users should be able to customize templates to suit their brand's needs. Ideal Skills and Experience: - Proficiency in Android app development - Prior experience with brand promotion apps - Strong understanding of template customization - Ability to deliver a sleek, user-friendly interface - Knowledge of effective UX design If you have experience with similar projects and are confident in your skills, I�...

As an experienced Laravel Developer myself, I am now in need of someone with greater experience to come in and optimize my code for efficiency, particularly in the areas of database queries and load times. Your skills and experience: • You have at least 5 years of experience in Laravel and you're familiar with Laravel 11. • You've previously developed websites using Laravel 11. • Your forte is optimizing code efficiency and database queries. • You have a strong understanding of how to improve page load times and database query speed. Your task: • Optimize my existing codes in Laravel 11, for open source project • Main areas for optimization include database queries and code efficiency • The goal is to achieve faster page load ...

We are seeking an experienced Android developer to build a utility app. The core functionality needed is configuration settings. A successful candidate should: - Have a proven track record developing Android utility apps. - Familiarity with creating custom configuration settings. - Display a commitment to delivering on schedule. - Possess an understanding of the varying Android device specifications and operating systems. Prior experience with similar projects will be greatly appreciated. We look forward to reviewing your applications.

I'm looking to have an online casino platform developed. Here's what that project entails: - Games Included: I want to incorporate a variety of games. At minimum, we should have Slots, Poker, and Blackjack. - Design: I'm bouncing around a vibrant theme that's fun and colorful to keep players entertained and engaged. - User Interaction: In terms of features, I'm looking to better player engagement with leaderboards. Ideal Skills and Experience: - Experience in casino game development - Excellent understanding in creating user-friendly and entertaining gaming environments with leaderboards.

I'm in the process of developing an application for the Android platform. Specific details about the type of app and its exact functionalities are yet to be determined. However, I'm actively seeking a skilled and experienced app developer who has a track record of successfully releasing apps on the Play market. Key Responsibilities: - Collaborate to define app features - Develop high-quality, readable, and testable code - Release final product on Google Play market Ideal Skills and Experience: - Prior experience in Android app development - Knowledge of Android SDK, different versions of Android, and how to manage different screen sizes - Experience with releasing apps on Google Play - Strong communication and collaborat...

I'm in need of a simple yet robust Android app for my workshop. The ideal candidate for this project should have experience in developing efficient and user-friendly applications for Android systems. Key Functions: - The app should provide a seamless offline experience, while also being capable of working online. - The primary features of the app should focus on creating and sending invoices, as well as generating vehicle inspection reports. The app should be designed to be intuitive, practical, and user-friendly. It should streamline the process of managing invoices and generating vehicle inspection reports, making it an essential tool for our workshop. Ideal Skills and Experience: - Proficiency in Android app developm...

I am seeking an exceptional iOS app and android developer who can bring my idea to life. The chosen developer should be capable of implementing the following features: - In-app purchases system - Login system - Real-time updates - Users Nearby function My preference is a design that is modern and minimalist. The ideal candidate will be able to provide creative input and suggestions while adhering to this design preference. Proficiency in Swift, knowledge of Apple's design principles and interface guidelines, and experience in designing seamless in-app purchases are essential for this project. Experience with geolocation services for the 'Users Nearby' feature is also a great plus. The app would basically entail user profiles, chat syst...

I have an Android app that I want to submit to the Google Play store. The app does not include any in-app purchases. This App is designed and used by 1 company only (not for all users, users can not register), that company will create and give account for their employees. Data in app is stored in company’s server. Now when we upload to Google play, it has been rejected as image below. We submitted many times safety data form with variety data, but google still reject our app. We don’t know where problem is. Our safety data from or our app, our code. The images below are API we use in our code, and feedback from Google. Please help us to submit this app to Google Play store.

I'm in need of an experienced developer who can create an Android application that incorporates face recognition technology. Key Project Details: - The app should be compatible with smartphones and tablets. - The face recognition feature should provide high accuracy. Ideal Skills and Experience: - Proficiency in Android app development. - Experience with integrating face recognition technology. - Understanding of secure and accurate data handling. - Previous work with apps compatible with multiple devices.

I'm seeking a skilled Android app developer experienced with integrating external APIs. While the particular functionalities for the app have yet to be fully confirmed, knowledge in user authentication, in-app purchases, and live chat features will be highly beneficial. Please include any relevant experience when submitting proposals. Experience with a variety of APIs is a must. Skills and Experience Required: - Proficiency in Android app development - Experience with API integration - Familiarity with user authentication, in-app purchases, and live chat programming - Portfolio showcasing previously developed apps.

Hi, We are looking for a website developed for our ERP software. Total pages will be around 50 with graphics and illustrations. Requirements 1. Development of a logo 2. 50 pages content re-write from existing content from a reference website. 3. Development of website using a wordpress theme I will provide.

I'm looking for a skilled app developer to create a new gaming application for the Android platform. This app will be in the genre of trump card games. Key Requirements: - Android Development: You should have a solid background in Android app development. - Game Development: Experience in creating engaging and interactive games would be great, especially in the card game genre. - UI/UX Design: An understanding of user interface and user experience design principles will be necessary to ensure the game is intuitive and enjoyable. - Creativity: Ability to think outside the box and come up with innovative gaming concepts is highly desirable. Please send any relevant examples of your previous work in your bid. I'm looking to collaborate wit...

We are in need of a highly skilled Laravel expert team to continue development on existing web application! The specific Task - Requirements Document will be provided. Project will be developed by Phases(milestones). Selected team will be having opportunity to work for long term! Skills and Experience: - Extensive experience in Laravel development - Proficiency in Laravel customization and optimization - Strong understanding of Gitlab - version control !* - Strong understanding of web development principles and best practices - Ability to work on a large-scale project and deliver high-quality results - Excellent problem-solving skills and attention to detail - Database Design & Management: The ability to design and manage a highly organized, efficient database is crucia...

I am in need of a competent urban planner to develop a zone map for a new commercial park. The area for development is approximately 230 hectares. The project entails a detailed layout of varied sections including office blocks, restaurants, hotels, road networks, and green spaces. • Space Distribution Specifics: The land allotment for each area is specific, with special considerations given to building, roadways, and greenery. Your expertise in spatial organization and optimal utilization will be crucial in achieving a balance between these diverse elements. We need to demarcate where each development will go (hotels, roads, crosswalks, office blocks, laboratories, residential housing, schools, supermarkets etc). • Zone Division: The commercial park should be se...

I am looking for a seasoned app developer who has skills and experience in creating cross-platform applications for both iOS and Android. The primary function of this app will be E-commerce. Key Requirements: - Develop a hybrid app that can operate seamlessly on both iOS and Android platforms. - The app should be user-friendly, responsive, and able to handle e-commerce transactions efficiently. - Ensure that the app integrates with payment gateways such as RazorPay, PhonePe, and PayU, in addition to other expected e-commerce functionalities. Ideal Skills: - Proficiency in hybrid app development for iOS and Android platforms. - Previous experience in developing E-commerce apps. - Expertise in integrating payment gateways, esp...

I'm looking for a skilled developer to create an efficient FTP script that will allow me to upload files to a specific folder in cPanel. Key Requirements: - The script should be optimized for small files, as large file handling is not a priority. - It should be developed in a language suitable for FTP functionality. The script will be used to automate the process of uploading files to a specific folder on a cPanel server. The ideal developer should have experience in: - Building FTP scripts for file uploads - Working with cPanel and its file management system - Ensuring the script runs smoothly for smaller files Please include in your proposal your experience with similar projects and any relevant skills that make you the ideal candidate for this task.