I'm struggling to understand how am I meant to interact with the "graph" and "calculator" stuff from the mediapipe library. More specifically, I'd like to write some Android code that uses landmarks from the holistic (pose + hands in my case) solution, with the final goal of writing a flutter application that compiles both for Android and iOS.
I've managed to build a few of the sample apps (thanks to docker), and I think I roughly understand what the graphs do. However, I don't understand how to interact with them from within the code. The Hello World! for Android tutorial doesn't really explain this. There are examples that include this type of behaviour (e.g. here), but I don't really know where is all the required information coming from (e.g. how would I find out the right functions and string constants to get holistic landmarks?)
For example, in Python I could get data via something like holistic.process(image).pose_landmarks, and then compute e.g. position or angle of hips. And as far as I can see there are some similar Android API-s available, although not for all solutions - including holistic. So what if I don't want to wait for the API-s development, and want to use the graphs instead? That part is not so clear.
As a bonus, please do feel free to drop any links which further explain/document the "graph" and "calculator" stuff I've mentioned earlier, as I've not used anything like this before and find it a little difficult to google.
Thanks.
I've realised there are docs available: https://google.github.io/mediapipe/framework_concepts/framework_concepts.html
Not sure how I've missed this...
Related
I am looking to start writing apps for mobile devices. I know a little about this subjec, and I am proficient in both java and python. However, before jumping into creating apps I wanted to get the community's input on a question I have not yet found the answer to:
How/Where should I begin?
I understand this question is fairly general/basic for a community that focuses on solving/debugging complex programs, but if there is a recommended tutorial (or specific platform) that will help a beginner(such as myself), it would greatly reduce the frustration and amount of monotonous questions asked on this forum and others.
Regards
Coursera is offering 3 courses all using android development which started last week. That would be an excellent starting point for anyone:
https://www.coursera.org/specialization/mobilecloudcomputing/2
How/Where should I begin?
I don't know about you, but I often learn by example more than reading. You mentioned that you're proficient in java so thats a great start. After you understand the Android SDK it's really only the UI good practices you need to learn. So here's my suggestion.
Start off with something super simple. Let's say, create your own version of a calculator. Something that can add, subtract, multiply, and divide. This should be dirty, ugly, but works correctly.
After doing this, take a look at some other android calculators on the play store. Check out Simple Loan Calculator. I use this example because it offers a lot of android UI components. ViewPager, ActionBar, etc. Download this app, take a look at it, and try to mimic it. This should provide an idea on how to work with the android UI components.
What's next? After you have done these two apps you should be relatively ready to tackle your own project.
HTML apps are easy to port across multiple mobile platforms. I have set up an Android HTML template as a starting point. You can just import this project into Eclipse and take a look at that.
https://github.com/jakewp11/HTML5_Android_Template
Here is my experience for ios,
There are three things that I consider as pillars
Objective C
Memory managment
Design patterns
The first one looks obvious but I'd stress on learning concepts like protocols, categories, extensions. As a beginner I thought that learning the syntax was enough, but time and again I had to jump back to the language concepts to understand what's going.
The memory managment , the most talked and confusing subject and now since we have automatic referenc counting to make things simpler and often new Dev skips learning memory concepts (I did it). So I suggest you to have an idea what actually happens under the hood of arc " the manual memory managment"
The design patters,
When I started off , to pass data and control , what I used to do was achieve every thing through the only design patten I knew (target action) . I lack the knowledge of design patters didn't how easily I could achive better results with less code.
Some resources:
Dev.apple.com
http://www.raywenderlich.com (one of my best tutorials are here, you can find one on design patterns)
http://rypress.com/tutorials/objective-c/
And yes , the sample projects at Dev.apple are the best tutors.
I am a beginner at android app development. I have an idea of an app, but I first need to set my bearings straight. So instead of confusing you with the complexities of the app, I just want to ask a question. Obviously, I do not expect anyone to write me the entire code, instead just to guide me to the right path by indicating which methods, classes or keywords to look for.
I want to know how to create several instances of the same image. I am planning on having a toolbar with all the tools that you can select and then a workspace where you will be putting those tools. Ever played a tower defense games, you know how you have a toolbar with selection of towers to choose from and then you simply drag and drop them on the map? something like that. Please also guide me on which layout would best suit this type of application.
I understand the question is too broad, but any kind of help to get me started would immensely help.
For a game, you don't want to use native View objects. Here's a guide on Android game development.
Here is a simple example of a Sprite based game for Android.
I personally think that you are going the wrong way here. Just like if you wanted to build a house you wouldn't start from building the roof, first you need to get a book (I would recommend the Busy coders guide to android development) or start reading (or watching on youtube) a tutorial and just start learning to code in android. Get better at it and in some time you will understand better on what and how you can do with the platform. There are tons of stuff for you to learn before you will be able to do even simple stuff, but believe me learning android is very exciting and the feeling you get when developing an app should be what drives you forward. Hope this helps.
I am about to decide which way to push our smartphone development.
I have read numerous articles about these technologies. I have also created test apps, but wanted to be 100% sure that I get this right.
I am not able to create EXACTLY the same look and feel like native app in PhoneGap because it runs in WebView Controler. And the webish look and feel is as far as I will get with this tech. correct?
(In the example app I have created with PG, the look might be similar, but there is a delay when i click on buttons and the animation is not so fluent as in native apps)
Latest Titanium seems to have changed its approach to WebView, to remedy that lack of look and feel of native apps. My question is (I havent tested this myself). Can I create EXACTLY the same look and feel of an native app with Titanium?
EXACTLY is the key word. I mean can a person tell a difference if app was created with Titanium? because I can definitely tell that app was created with PG.
Final goal is the UX, ppl sense this things, and on smartphones anything that is webish and is suppose to be appish is a bad UX i believe.
Thanks
Compared to PG Titanium is more Native like UI experience but it's kinda problematic for Android.Since it's originally intended for IOS.
Titanium for Android is pretty buggy and can mess you up and the thing that you have to come up with workarounds and if you cant find any then you are stuck.
But if you are okay with that and i can easily advise that Titanium is way to go though it's nearly native (not exactly) which close to exactly.I dont think an average user would understand Titanium .
2) yes, since titanium uses the original UI. your javascript code is wrapped to native Objective c code that creates native elements. only constraint is that your are not as flexible as with real native code written by yourself. but you can write native modules and add them to your projekt. so you're able to expand your project with custom UI too.
Can any one give some suggestions to implement captcha in android
A little bit of shameless self-promotion, but I recently had this same question, and after combing through StackOverflow.com realized that all of the solutions out there are Remote API based (which would require my simple app to require Internet permissions), and either were super difficult to implement on Android, or were limited by use based numbers and you could not get that number raised.
So I started a project, and put it on GitHub, Click here
Current features are limited, but I hope they will grow with the open-source community:
Simple Text Captcha, editable length.
Simple Math Captcha, editable math operators.
The biggest feature of all is ease of use!
Take a look to this project, they have a some android's examples
https://labs.ericsson.com/apis/captcha/downloads
https://labs.ericsson.com/apis/captcha/documentation
or maybe use this
http://simplecaptcha.sourceforge.net/
to get some ideas.
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