I have been looking for this for ever on the internet, but I can't seem to find it:
I want to create an augmented reality app for Android using Qualcom Vuforia and Eclipse.
Compiling and installing the Vuforia sample app worked, but I just don't get the logic of all behind it.
Do you know a thinner/ lighter tutorial for starting with Vuforia? (NO UNITY!!)
It is not very clear what exactly you are looking for - a tutorial for starting with it is one thing, and understanding the logic behind it is another thing...
Anyway, you can start here:
Getting started with Vuforia.
What exactly it is they are doing would not be revealed, of course, as it is not an open-source library, but you can learn some things from the Articles section. They have explanations on several topics, one of which could also assist you to better understand what's going on there:
Natural Features and Image Ratings
Related
I just decided today that I wanted to make a gallery app for my phone, pretty much just combine several features I like from different apps I've tried into one, perfect app, for me. The problem however is that although I know some java, took Programming 1 & 2 and currently taking AP Computer Science in high school, I have no idea where to begin. I roughly know and even less so understand the layout of Android Studio, but I can get by. I need help finding useful resources online to help me learn or even someone who is able to answer the probably many questions I have. I've watched some youtube videos and tried reading some tutorials but I haven't found anything that clears things up for me. I will ask a few questions now:
1.) I have no idea where to start or what to use to get the app to show images from device storage and micro sd card in a grid view. I have read things about using the RecyclerView to not use as much resources, and also something about Glide for better performance(I think thats what both those do, if I understand correctly) but I have no idea what to do with either or even how to use either.
2.) In the xml design portion I'm not good at navigating everything and understanding what I should use for what. I can make a good design in photoshop or other programs but I'm not sure how to actually take that vision and translate it into working pieces.
3.) Pretty much I just need help and will probably think of more questions as someone tries to answer those.
Thanks!
There are lots of good, free tutorials on the net. For example on the official Android Developer site: https://developer.android.com/training/index.html
- where you can find a lot of useful example code snippets, but there are other sites also - https://www.tutorialspoint.com/android/index.htm . It starts with the very basics and has lots of examples too.
Other non-free tutorials can be found at
udacity.com - Android Developer Nanodegree by Google
udemy.com
To reach data from your device storage or from your micro SD card you have to understand the principle working of content providers.
I do not recommend Recycle View, when you are a beginner, because it is a more complex thing than a List View (or Grid View). Start with these and then upgrade.
Glide is cool thing, because it saves you from a lot of useless coding and easy to use. On their GitHub page you find detailed instructions how to import it to your project - I recommend Gradle - and how to use it.
In my point of view, start reading one of the free sites patiently and than you are going to get answer for your questions, but it is very important to understand the basics.
I hope I helped! Sorry for my bad English, I used it a long time ago.
Hi we are a small unit from Chennai having 3+ years of exp in Android programming. We have planned to move to Augmented Reality concept and we have decided to built the AR SDK from scratch! But we have no clue on where to start. We have already used KUDAN AND VUFORIA which are best at its sources but commercial. We know the principle behind the working concept of AR.
So what a SDK developer will plan before diving into coding? Kindly please dont close or downvote the question because as a 3+yrs experience we need some kind of more informations to achieve the task! Thanks for your support
First of all, you should know a bit more what this task require of you - you decided to do it from scratch without ANY effort estimation and cost estimation, because you do not know what is involved... This sounds like it might be a problem for you. I would strongly recommend making sure no AR open source SDK can assist you, since this is not a small project.
Now, if you insist... What I would suggest is to first set your goals - comparing to existing SDKs which you have examined, what do you want to achieve (performance-wise, memory-wise, API-wise, etc.).
Then, learn what feature-detection algorithms may be involved in order to achieve the required results, what type of system is required architecture-wise in order to meet the requirements. Design the architecture carefully, as the frame rate is the most critical issue usually on mobile AR apps. Also use the experience you got while trying to use other SDK-s - what was hard for you to use? What were you missing?
Once these are done, go and search for the technology to use - mainly, image processing library (such as OpenCV, and others).
Then, only then, you should start coding your SDK...
This is only the tip of the iceberg - you are up for a very big challenge.
I want to develop an android augmented reality application, in which app should have a function to reconstruct a destructed objects(ex : buildings/statues) as shown in the following video link
https://www.youtube.com/watch?v=WOVjISxlhpU
I have gone through metaio, wikitude and vuforia sites each has some difficulties it self. and at Last i found vuforia has a feature call Smart Terrain where it is used for 3D animation and game development , the issue is only limited tutorials available to develop a customized application.
With that above link i found armedia.it and hyperspaces.inglobetechnologies.com those too have limited tutorials with the code.
Please let me know if any other SDK available their to fulfill my app feature share if there any useful tutorial to do such for the above sdk's
Thanks in advance
I do not think that there are any publicly available tools that can help you do this, except perhaps that armedia app. Reading through it, it seems like their approach is kind of laborious and fragile (align photos of user viewpoints with accurate 3D model). If you can't work through the tutorials these tools have, then posting here isn't going to get you what you want: SO is for asking specific technical questions (e.g., help fixing problems in code you have tried to build), not for general guidance and help.
FWIW, Vuforia's visual tracking will not work for something like this, I don't think, as is aimed at MUCH smaller scale things (for which you can build a target or object); typically things smaller than a person. Metaio is no longer available (Apple bought them).
Non-visual tracking (GPS + orientation) is not sufficient to attain this kind of tight registration.
I'm planning to develop a simple tic-tac-toe 3D game for android as a starting point (practical task to learn and do something useful), but devguid seems to be more of a reference than something with what I can get my hands on particular task. Can someone advice what should be investigated? (or maybe I'm searching for it incorrectly)
EDIT: I'm also considering other options on learning android development. (Though, the "practice while learning" approach is preferred).
EDIT:
My purpose: learn how to develop apps for android && create an app, which is fun and can be placed on android market
My initial "data": strong java + java ee, basic C/C++, willing to learn
Means to achieve purpose: devguide is more of a reference, and I need a solid start with lots of explanations. Need an advice here.
You see, to my mind there is no sense to read books and so on. First reading starting manuals from Google should definately help. When you are done with them you should jump into development. Of course, you will have a lot of questions, however there are lots of great manuals and tutorials all over the internet, so you will rarely have difficulties. If you even though have them, come here and we'll help =) Check out my devBlog
I did a simple tic tac toe for my first Android application and I was able to create a working game quite quickly using a table of image views. You just need to add clickHandler events onto the image views so they change image on click, and write a function checking whether the game is won after the click.
Try out several tutorials here, especially testing ones. Get your hands on Pro Android Games with reading devguide when some part of android development is unknown.
This will result in a rapid development (with a zero level starting point) and small learning curve of basic + in deep android development.
Ok so I am starting off with android development and I have found a bunch of useful tutorials so I am set there. What I am looking for is a resource that provides homework style problems to do and has the answers downloadable so I can check my solution against the "official" solution.
So for example instead of the notepad tutorial it would be: "Build an application that you can create, edit, delete notes, ...etc.". Ideally the "official" solution would have some explanation as to why they built it the way they did. (so a tutorial at the tail end)
Anyone know of any resources that provide their tutorials in this format?
Thanks.
Okay, here's one: build me an app that allows the user to make, modify, and store notes. The 'official' answer is the Notepad app in the 9th level of the api. (Note that this is different from the notepad tutorial).
The point is that asking questions is easy, the harder part is actually making a program that does the job. And #Roflecoptr is right, at this level it can be implemented very differently. But if you want that mindset, you can write your own 'homework' easily. Just think up a few things you want that are simple, build it, does it do what you want well? Then you pass.
Despite for very trivial problems I dont think this is possible, because there are way to much possible implementation possibilites so that you can't compare your solution to the "official" solution.
But why do you need something like that? If you want to learn to program on Android, you can just follow some tutorials you've already found and then modify them, adapt them to your needs. When you get more used to the development of Android apps you can just get some ideas on tutorials/android development sites and then implement your own solution. There is plenty of help available here on SO and on other development sites, which will help you if you really get stuck.
You could always go to the Android Samples page, and without looking at their implementations, do your own and compare. The samples page is here:
http://developer.android.com/resources/samples/index.html