I was using app inventor to build an app for a school project. The problem is I can not find a single strong tutorial on the internet of how to use Bluetooth with app inventor. I do not no much and can't give too much detail because I have now information to start with. If someone could give an example program along with how it works of point me in a direction to find some good tutorials.
Note: This is between two phones.
After 2 minutes of searching on the net I have this:
http://appinventor.pevest.com/?p=520
http://puravidaapps.com/btchat.php
http://ai.kittywolf.net/index.php/BTChat
http://www.appinventor.org/Chapter12
Good luck.
Related
I wonder why none of the Xamarin Prebuilt Apps at https://www.xamarin.com/prebuilt support both iPad and iPhone? They all have the same design on each resolution. Especially Apps like 'Acquaint' would be perfect on iPad to have the contact list on the left and the details on the right. But instead it just has the same design like the iPhone Version.....
Are there any reasons why Xamarin does not offer samples with different designs depending on the client resolution? Are there somewhere else some examples?
Many thanks!
You might want to take a look at our Creating Mobile Apps with Xamarin.Forms Book First Edition by Charles Petzold.
I work on the same team as Charles and I know it's a topic he's covered in detail. The full book should be available soon too.
BTW, we are looking into creating some detailed, annotated cross-platform app samples that do all the goodies that a typical modern app would be expected to have.
I do not know of any of the stock Xamarin examples that use OnIdiom, but it just a matter of time to code them...hahahah, always just a matter of time and code. (I'm sure the Xamarin guys can chime in on this one):
Xamarin.Forms.OnIdiom Class
<OnIdiom.Phone>Vertical</OnIdiom.Phone>
<OnIdiom.Tablet>Horizontal</OnIdiom.Tablet>
In terms of finding examples that use the Xamarin.Forms XAML OnIdiom I would search Github for OnIdiom, there a few OSS examples of phone/tablet switching floating around there as I used at least one as a template to do a quick phone/tablet prototype for a client.
Maybe I have't looked hard enough, but I spent yesterday googling for a bit and found no relevant projects on hacking the DJI Phantom Drone in order to create new coordinating apps. This is besides the app for coordination DJI currently uses for their drone. I'm trying to see if there's a way to communicate with the Drone with a specific protocol in order to accept a set of procedures.
Any help would be awesome,
Thanks.
Great News for you and all us Droneys! DJI has launched their SDK since you asked this question. They released it last November and you can now apply for a license and write your own apps for the Phantom2 Vision+ using their SDK.
Check it out at https://developer.dji.com/
I am already building a project using the SDK - you can follow my progress on my blog / product site. I will also try to update it with good DJI related development links and tips.
This post is old but I think it is good to leave a foot print for others :)
There is this new company called NVdrones, which created a peace of hardware that you can attach to any drone (you need physical access to the flight controller), and once you do that you can use their SDK (Arduino, Java, Android and Javascript) to write your app without the need of hacking, soldering or anything else. It is just plug and play.
Another benefit is that you are not locked with a specific drone (DJI SDK or 3DRobotics SDK), you can use the board on anything you want. Which gives lots of flexibility.
The developer site is http://developers.NVdrones.com
Hope this helps.
This is a great topic!
You could check how to hack your copter here: https://github.com/flyver/Flyver-SDK/wiki/-2.2--How-To:-Flyver-Hack-a-Copter
By opening the drone, taking out the original controller, soldering a few wires and sticking an Android phone to it, you will have the ability to program your Phantom in a modern manner with an open source SDK and application based development. This means that you could add computer vision to it, automation or additional hardware. You could also use smartphones, web and other interactive devices for remote controlling the copter instead of using the standard remote controls.
The Phantom, however, is offcenter balanced due to the fact that most people use gimbal with it. Without the gimbal is a lot less stable from my experiments so you will have to put some extra work in center balancing it.
I have made one windows phone based application. i want some designing ideas from you wp7 people.how can we apply styles,transparent background or the design which suits wp7 app. may i have some links which provides snaps for good designed apps. please help
One app that jumps to my mind when talking about great use and adaption to the metro design, it's "Cocktail Flow". It has very well done implementations of many design cues for WP7. As special treats it has features like parallax effects controled via gyroscope.
You can find a free version on the marketplace. Definitely worth a look.
MSDN user experience guidelines are pretty good, User Experience Design Guidelines for Windows Phone.
Also, it helps to install some popular apps from the marketplace and study their design.
The BEST thing you can possibly do to get a good idea of how to build a great WP7 app is to own a Windows Phone, and use it as your primary phone.
Get used to the way the operating system flows. Download cool apps. As time goes on you begin to understand from the user's perspective what a "good" app looks (and more importantly) feels like. It's a hard thing to nail down in a "user experience" spec. I find that a lot of people who set off to build a WP7 app do so before understanding how apps are supposed to behave on the platform. It is vital that you understand how users expect applications on the windows phone to operate. If you use a windows phone for a good 3-4 months, and really make an effort of butting it through the steps, it will be hard to walk away from that experience without a very clear idea of what a "good" application looks like for the windows phone.
That being said, and while I honestly don't believe that there are any short cuts to good design for the windows phone, I highly recommend downloading the following apps, and playing around with them to get a feel for "good" UI:
Wordament
Cocktail Flow (previously mentioned)
Twitter
Spotify
Yelp
Any of the built in applications (Office, Zune, Internet Explorer)
The above are good to start with, but again, you're really not going to understand it unless you live and breath it everyday for at least a few months.
I want to develop mobile applications for the WINDOWS PHONE 7 using silverlight. Can anybody suggest me suitable tutorial please.
Thanks in advance.
Well you should probably start at MSDN on the Phone Platform section.
Then I would recommend you go and download the Windows Phone 7 Developer Training Kit which contains some introductory tutorials on getting started with WP7 and building your first app.
From there you can check out a couple of different things like the following:
This resource, WP7 in 7 minutes was pretty helpful for accomplishing basic tasks when programming for WP7.
The App Hup is a great spot for finding resources for developing for WP7 also (They have both Silverlight and XNA samples there).
This place, Windows Phone 7 Tutorials - Kirupa.com also has some pretty good tutorials.
EugeneDOTNET has a ton of tutorials as well It's definetly worth checking out.
My last suggestion would be to follow Erno's suggestion and read the free book by Charles Petzold. That book is great for just getting started.
Keep in mind that most of these resources require you have a little experience in .NET and C#. If you want to learn that first check out this other free book by Rob Miles on learing C#.
Hope this helps.
A lot depends on your experience.
If you know .NET get started with the free book from Charles Petzold
The Windows Phone 7 for Absolute Beginners series on Channel 9 is an excellent way to get started.
Check out the QuickStart guides in the app.hub at http://create.msdn.com/en-us/education/quickstarts
also watch the JumStart training sessions on Channel9 http://channel9.msdn.com/Blogs/egibson/Windows-Phone-7-Jump-Start-Session-1-of-12-Introduction
I used this "Introduction to Windows Mobile 7 Development " when i first started.
I am just a beginner in developing windows phone 7 apps. Can you suggest some ideas or rather exercises that can get me started working on the platform and start building some real applications.
Will really appreciate the help.
Well, simple games like pong or breakout are always good ways to play around and get used to a new platform. You could also a try writing a simple notepad style app.
If those are more than you'd like to take on just yet, 'guess the number' and other similar games are always good too.
Maybe you could also Google for some simple tutorials and run through them? This one seems to be a good, if very basic, introduction.