We have 3 different Flutter packages all contained in this monorepo.
More information on the scientific background and a detailed description of the StudyU platform is available here.
flutter channel beta
flutter config --enable-webTo enable web support.
We only developed on beta, since it is required for web and we did not build a have a running production app. It is stable, but some plugins may not be instantly adapted to beta, causing incompatibilities. This was the case a few times, we managed to find fixes in the GitHub issues of those packages.
Inside the respective folders run:
flutter pub get flutter run -t lib/main.dart
There exist 4 different compose files to run locally:
docker-compose.yml: Parse, Parse Dashboard
docker-compose-full.yml: Parse, Parse Dashboard, App, Study Designer
docker-compose-designer.yml: Study Designer
docker-compose up --build. This starts a nodejs docker container running the Parse Server and Dashboard and a MongoDB container, which is used by Parse.
To run the study designer with parse:
docker-compose -f docker-compose.yml -f docker-compose-designer.yml up --build
To run app with parse:
docker-compose -f docker-compose.yml -f docker-compose-app.yml up --build
To run both with parse:
docker-compose -f docker-compose-full.yml up --build
Above command starts the app or designer using the
development environment. This currently points to our hosted Heroku instance (will be shut down on Nov 10th). We use .env (environment) files, to specify the parse App ID, server URL and debug mode. We have multiple configurations stored under
envs/ in both app and study_designer. By default
.env (see below) is used, which contains the instance running on Heroku. We can specify the other files by using e.g.
--dart-define=ENV=.env.local. This can also be added to the run configuration in Android Studio or VS Code.
flutter build/run android/web/... --dart-define=ENV=.env.dev/.env.prod/.env.local/...
envs/.env file example
PARSE_APP_ID=nof1 PARSE_SERVER_URL=https://nof1.herokuapp.com/parse PARSE_DEBUG=true
(Previously listed the Master key as well, but it should never be used for client applications. It is only used for changing ACLs)
The great advantage of this new approach (compared to the previous approach which different entrypoint
main.dart files) is can set the configuration of already compiled web apps. Previously, once built, a Flutter web app and its container would be hardcoded to whatever variable was given at the build time. In the docker-compose setup, we leverage this by copying the config (
envs/.env) to the right place in the container, without needing to rebuild. Now we can publish a docker image studyU-designer:1.3.4 and the same image can be used in multiple environments. This is also needed for a Kubernetes setup.
Additionally we have 5 envs for convenience. Replace or create for more convenience:
.env: Used by default, same as .env.dev
.env.dev: Points to our Heroku instance. What we mainly use.
.env.prod: Same as development currently
.env.local: Used when connecting to a local running parse server.
.env.local-android: Same as local, but for connecting from an android emulator.
Setup your editor of choice: https://flutter.dev/docs/get-started/editor?tab=androidstudio
We prefer Android Studio, Visual Studio Code is also well supported.
To open and edit the project, the best option is to open the whole repository in Android Studio. This allows you to work on all 3 projects at the same time. It is especially useful when navigating the code from app/designer to core, as it is loaded in the same project and you can directly see and edit the code.
To run the app or study designer, you need to create your own run config in Android Studio.
<repo-root>/app/lib/main.dartor a different main file. We recommend having one for the app and one for the designer.
When developing models in the
core package you need to make sure the JSON IO code is generated correctly. To do this we use
build_runner together with
To generate the IO code once, run
flutter pub run build_runner build.
To watch the model files and continually generate the files, run
flutter pub run build_runner watch.
Contrary to most recommendations, we commit those generated files to Git. This is needed, because core is a dependency by app and designer and dependencies need to have all files generated.
We are using parse-server and Parse Dashboard.
Read the full Parse Server guide here
We use the official parse-server docker image and the bitnami parse-dashboard image, which is more actively maintained than the official one
Run this command:
$ dart pub add studyu_core
$ flutter pub add studyu_core
This will add a line like this to your package's pubspec.yaml (and run an implicit
dart pub get):
dependencies: studyu_core: ^3.7.13
Alternatively, your editor might support
dart pub get or
flutter pub get. Check the docs for your editor to learn more.
Now in your Dart code, you can use:
import 'package:studyu_core/core.dart'; import 'package:studyu_core/env.dart';
Source code: https://github.com/hpi-studyu/studyu
License: MIT license
The electric scooter revolution has caught on super-fast taking many cities across the globe by storm. eScooters, a renovated version of old-school scooters now turned into electric vehicles are an environmentally friendly solution to current on-demand commute problems. They work on engines, like cars, enabling short traveling distances without hassle. The result is that these groundbreaking electric machines can now provide faster transport for less — cheaper than Uber and faster than Metro.
Since they are durable, fast, easy to operate and maintain, and are more convenient to park compared to four-wheelers, the eScooters trend has and continues to spike interest as a promising growth area. Several companies and universities are increasingly setting up shop to provide eScooter services realizing a would-be profitable business model and a ready customer base that is university students or residents in need of faster and cheap travel going about their business in school, town, and other surrounding areas.
In many countries including the U.S., Canada, Mexico, U.K., Germany, France, China, Japan, India, Brazil and Mexico and more, a growing number of eScooter users both locals and tourists can now be seen effortlessly passing lines of drivers stuck in the endless and unmoving traffic.
A recent report by McKinsey revealed that the E-Scooter industry will be worth― $200 billion to $300 billion in the United States, $100 billion to $150 billion in Europe, and $30 billion to $50 billion in China in 2030. The e-Scooter revenue model will also spike and is projected to rise by more than 20% amounting to approximately $5 billion.
And, with a necessity to move people away from high carbon prints, traffic and congestion issues brought about by car-centric transport systems in cities, more and more city planners are developing more bike/scooter lanes and adopting zero-emission plans. This is the force behind the booming electric scooter market and the numbers will only go higher and higher.
Companies that have taken advantage of the growing eScooter trend develop an appthat allows them to provide efficient eScooter services. Such an app enables them to be able to locate bike pick-up and drop points through fully integrated google maps.
It’s clear that e scooters will increasingly become more common and the e-scooter business model will continue to grab the attention of manufacturers, investors, entrepreneurs. All this should go ahead with a quest to know what are some of the best electric bikes in the market especially for anyone who would want to get started in the electric bikes/scooters rental business.
We have done a comprehensive list of the best electric bikes! Each bike has been reviewed in depth and includes a full list of specs and a photo.
To start us off is the Billy eBike, a powerful go-anywhere urban electric bike that’s specially designed to offer an exciting ride like no other whether you want to ride to the grocery store, cafe, work or school. The Billy eBike comes in 4 color options – Billy Blue, Polished aluminium, Artic white, and Stealth black.
Available in the USA, Europe, Asia, South Africa and Australia.This item ships from the USA. Buyers are therefore responsible for any taxes and/or customs duties incurred once it arrives in your country.
Why Should You Buy This?
**Who Should Ride Billy? **
Both new and experienced riders
**Where to Buy? **Local distributors or ships from the USA.
Featuring a sleek and lightweight aluminum frame design, the 200-Series ebike takes your riding experience to greater heights. Available in both black and white this ebike comes with a connected app, which allows you to plan activities, map distances and routes while also allowing connections with fellow riders.
The Genze 200 series e-Bike is available at GenZe retail locations across the U.S or online via GenZe.com website. Customers from outside the US can ship the product while incurring the relevant charges.
The Norco VLT S2 is a front suspension e-Bike with solid components alongside the reliable Bosch Performance Line Power systems that offer precise pedal assistance during any riding situation.
This item is available via the various Norco bikes international distributors.
Manufactured by Bodo Vehicle Group Limited, the Bodo EV is specially designed for strong power and extraordinary long service to facilitate super amazing rides. The Bodo Vehicle Company is a striking top in electric vehicles brand field in China and across the globe. Their Bodo EV will no doubt provide your riders with high-level riding satisfaction owing to its high-quality design, strength, breaking stability and speed.
This item ships from China with buyers bearing the shipping costs and other variables prior to delivery.
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Are you leading an organization that has a large campus, e.g., a large university? You are probably thinking of introducing an electric scooter/bicycle fleet on the campus, and why wouldn’t you?
Introducing micro-mobility in your campus with the help of such a fleet would help the people on the campus significantly. People would save money since they don’t need to use a car for a short distance. Your campus will see a drastic reduction in congestion, moreover, its carbon footprint will reduce.
Micro-mobility is relatively new though and you would need help. You would need to select an appropriate fleet of vehicles. The people on your campus would need to find electric scooters or electric bikes for commuting, and you need to provide a solution for this.
To be more specific, you need a short-term electric bike rental app. With such an app, you will be able to easily offer micro-mobility to the people on the campus. We at Devathon have built Autorent exactly for this.
What does Autorent do and how can it help you? How does it enable you to introduce micro-mobility on your campus? We explain these in this article, however, we will touch upon a few basics first.
You are probably thinking about micro-mobility relatively recently, aren’t you? A few relevant insights about it could help you to better appreciate its importance.
Micro-mobility is a new trend in transportation, and it uses vehicles that are considerably smaller than cars. Electric scooters (e-scooters) and electric bikes (e-bikes) are the most popular forms of micro-mobility, however, there are also e-unicycles and e-skateboards.
You might have already seen e-scooters, which are kick scooters that come with a motor. Thanks to its motor, an e-scooter can achieve a speed of up to 20 km/h. On the other hand, e-bikes are popular in China and Japan, and they come with a motor, and you can reach a speed of 40 km/h.
You obviously can’t use these vehicles for very long commutes, however, what if you need to travel a short distance? Even if you have a reasonable public transport facility in the city, it might not cover the route you need to take. Take the example of a large university campus. Such a campus is often at a considerable distance from the central business district of the city where it’s located. While public transport facilities may serve the central business district, they wouldn’t serve this large campus. Currently, many people drive their cars even for short distances.
As you know, that brings its own set of challenges. Vehicular traffic adds significantly to pollution, moreover, finding a parking spot can be hard in crowded urban districts.
Well, you can reduce your carbon footprint if you use an electric car. However, electric cars are still new, and many countries are still building the necessary infrastructure for them. Your large campus might not have the necessary infrastructure for them either. Presently, electric cars don’t represent a viable option in most geographies.
As a result, you need to buy and maintain a car even if your commute is short. In addition to dealing with parking problems, you need to spend significantly on your car.
All of these factors have combined to make people sit up and think seriously about cars. Many people are now seriously considering whether a car is really the best option even if they have to commute only a short distance.
This is where micro-mobility enters the picture. When you commute a short distance regularly, e-scooters or e-bikes are viable options. You limit your carbon footprints and you cut costs!
Businesses have seen this shift in thinking, and e-scooter companies like Lime and Bird have entered this field in a big way. They let you rent e-scooters by the minute. On the other hand, start-ups like Jump and Lyft have entered the e-bike market.
Think of your campus now! The people there might need to travel short distances within the campus, and e-scooters can really help them.
What advantages can you get from micro-mobility? Let’s take a deeper look into this question.
Micro-mobility can offer several advantages to the people on your campus, e.g.:
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A good and attractive user experience design for mobile applications is vital to creating engaging experiences. The major reason is to achieve business goals for building a brand name, improve brand reputation, and generate more traffic and revenue through mobile applications.
Contact Skenix Infotech now to get the best & trending design for your mobile applications: https://www.skenix.com/mobile-application-design/
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The front-end of the mobile app is the driving factor that drives users to check out the app further and experience what are the benefits of using that particular app. So the design of the front-end is one of the most important factors in mobile app development.
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In the world of overrated terms “web development”, a mobile app wireframe design is one of the most underrated terms. The design of wireframes is considered when people look for the bigger picture.
While designing the UI-UX, people forget the simple norm of general to specific shifting. As the complexity increases and so does the approach become more difficult, this is where the designing of the wireframes comes in handy.
Before diving into the “How to”, let’s first see why we need them in the first place.
Wireframes are the skeletal layouts of an application or a website that is being designed. The specificity comes into play, the elements and the features have to be placed at specific locations. Take a building, in the process of making it, first the foundation is laid and then pieces are fitted together from the skeleton structure on a piece of paper, wireframes do the same for the website or application structure such as a smart home application.
The designing of wireframes is commonly known as wireframing. For the construction of a building, the framework or the skeletal structure is important while designing a web application or mobile application, wireframing is important to make it user-friendly. This entirely and solely works to make the journey smooth and destination easy to reach.
As for the building, the layers of cementing and painting is done later to increase the visual appeal, the visual contents and appealing stuff are added after wireframing. The simpler it sounds after the definition, the complex it gets when it is being done.
It is a very goal-oriented procedure, one has to keep in mind is the goal of the product or the destination of the service. The main focus should be on UX. The arrangement of the elements and their interaction with each other and with the user is the utmost important task in mobile app wireframing.
One has to keep in mind that skipping this entirely can lead to the failure of the entire process of web and mobile app development at the end.
Again taking the example of the construction of a building, the foundation must be laid first based on the skeletal framework that has been prepared, then only you can jump to beautify your building, as a designer one has to understand and follow the steps where designing the mobile app wireframe comes first and then the visually appealing content is added next not the other way round.
For the most part, people do not understand the importance and come up with some trashy design of wireframes and the main foundation becomes faulty, hence the entire designing at later stages becomes faulty. If one wants to skip the reworking part, mobile app wireframing must never be ignored.
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