I'm trying to communicate with a local API server, but found out Android devices are not able to communicate with local domains. I've been up all night looking for ways, but came with nothing. I found the jmdns packages, but don't know how to include it in my cordova/ionic app. Currently i am trying a Cordova plugin (diont), but am a little lost ;-) Does anybody here know of good working sollutions?
I am building a device for use in a local network, so i have to figure this out :-)
Thanks!
Bad news, this is a well known Android bug/missing feature.
https://code.google.com/p/android/issues/detail?id=8030
If you really need to make this work, the only "solution" i can think of is to do a DNS lookup yourself, since you are using Cordova, you'll probably need to write a plugin to do that.
Related
Node.js seems like a perfect solution for creating an API for my Android application. I want it to be hosted on my own web domain, without using any commercial solutions like Heroku, Firebase, AWS. Running server on localhost seems pretty straightforward, but finding a solution on how i could host it on my own server is a problem.
When purchasing your own domain, what should you look for in terms of supported technologies when you want to host Node.js application, using a MongoDB database, that also has to deal with great amount of media stored? Is there any alternative that doesn't involve using cloud solutions, but creating your own back end solution that allows being in total control of your hosted content, what is installed and how it works?
Probably you can use a VPS (Virtual private server). You can have your own Operating system installed, and manage it as your own machine, installing everything you need, and publish there whatever you want.
I have something like you are looking for with OVH (check it here https://www.ovh.es/vps/vps-ssd.xml). I think they have one of best prices and it works fine.
I need to utilize both a barcode scanner and a USB port on something handheld. I figure a small Android Tablet is my best option.
I've spent some time researching and I cannot find anyone who has implemented a NativeScript App w/ Serial Port communication on Android.
I am concerned this means it is not possible, or prohibited for some reason.
I have the Serial Communication functional right now using Nodejs and the serialport module via NPM.
Does anyone know if this module will work in a NativeScript app?
I am going to attempt to make this work over the weekend, but before I waste a lot of time I figured I would ask in case this is simply not possible -- I've chased simple bugs for days so I could waste a long time on something that's not possible. :)
Thanks for your help!
Anything you can do with a pure Java-only app (or Swift/Object C for iOS) you can do with NativeScript as you can access all the underlining APIs. This is one of (if not the) key differences between NativeScript and other technologies. See the NativeScript docs.
Most probably, you'll want to use some third party code to communicate with the serial device (such as usb-serial-for-android). Here's a great blog post on how to use third party code in your NativeScript app.
NOTE: If you have no idea what TOR or Orbot is, check out this links below:
https://www.torproject.org/
So, I was wondering if possible to add TOR support to my app. This would save the user alot of stress looking for a working proxy and besides, TOR is one of the most safest proxies out there.
Im aware that the The TOR team made an app called "Orbot" which allows Android devices to proxy apps using orbot. The problem is, the only way for Orbot to proxy apps is if they have ROOT and some users do not like taking techy approaches, especially when it has "THIS COULD BRICK YOUR DEVICE!" so I thought if its possible to rip out the Orbot source and add it to my app so my app gets proxied.
This can save lots of people from downloading multiple apps and cut time on setting this up (since my app has to have proxy support to be proxied through TOR which I havent seen much of so i really have no idea on how to have something like this) but im not sure where in the source code is the actual routing to the TOR network and thought i could get a little boost in this.
Im not trying to make my own Orbot, i will give credit
So, does anyone know where to start? I decompiled the regular Orbot app and skimmed through the source but not much rings a bell.
Thanks!
Use ORlib, which "is an Android Library for use by any application that wishes to route its network traffic through Orbot/Tor".
If you want to avoid forcing user to install Orbot, you can include Tor in your application using this project which includes Orbot's tor binary and allows full control over it.
So I am a relatively new iOS developer but thanks to Stackoverflow, i managed to get peer to peer data communication for my app working without the need of a server using gamekit/GKSessions.
Basically, one iOS device acts as a server and others just connect to it to receive app specific data.
Now, the app is currently being ported on Android and I was wondering if there is a way that I can make an Android device connect to the iOS app and behave the same way as ios app does.
Android developers suggested alljoyn to be an optimum solution for android but that doesn't seem to be available yet for iOS.
Please suggest if you have any ideas on this front.
If there is a solution that involves rework on iOS side as well then I am open to it!
In case, you or others tackling the same question in Jan 2013 needs an answer,
AllJoyn is now ready for iOS too, amongst other platforms.
https://www.alljoyn.org/docs-and-downloads
Venkat i suggest you to read and get some detailed information regarding P2P. This is a Good source, because you might get stuck if both devices are behind multiple Nat. but if your willing to go forward there is always a way. My suggestion would be an Relay, but you need to have a server, but the relay behaves like P2P. Look at the source above to get ideas.
I didn't have time to wait for alljoyn to be launched for iOS and sensing no other feasible solution that would fit on my timeline, I implemented a relay server in between to achieve this.
For others though, iOS binding is now available for alljoyn (www.alljoyn.org).
I haven't tried it yet but the android version of my app works with alljoyn and it works perfectly so I assume it will do the same for iOS as well.
One limitation to be considered using alljoyn is that it cannot communicate between devices that are behind different subnets.
I think there is a limit of max peer to multiple peer connectivity (max 8 peers) derived by IOS and Android, there is no connectivity tested using alljoyn between IOS and Android devices
I am developing Android Web App using JSP with xml parsing. I developed it in Java using Tomcat Server but I couldn't develop in Android. I am new to the web app development. So can anyone kindly suggest me how to proceed further...
waiting for a response guys...Thank you
It is likely that you don't need tomcat on android. After all tomcat is (apart from everything else) a web server. This means that the phone your app is run within should be serving requests from other clients. I doubt you can make sure your phone IP is fixed, and even if that's the case, phones are not meant to be servers.
What I suspect you have done is - you've implemented some functionality in the context of JSP and servlets, but this functionality can easily be run without jsp/servlets. Remove the servlet-api.jar from your classpath and make your functionality work without these. Then you can easily use it in an android app.
While it should be possible from just the hardware standpoint, it should be nearly impossible to get tomcat running in the dalvik pseudo-java envrionment that android provides. the dalvik vm that Android uses is not a Standard Java VM, hence tomcat can't run on it.
I would suggest to look into the Maemo world, specifically the n800 and n810, which are a bit more hackish but also a lot more closer to linux than android. I've successfully run OSGI based apps on those machines. And they are still mobile devices you can use.
Check this site for some examples: http://wiki.maemo.org/OpenJDK_6.0_0_%28Cambridge_Software_Labs%29_on_N900
Look at i-Jetty. It's a web server that runs on the Android platform.
Why crazy? It is possible to make an ip pseudo-staic and then use a phone or tablet as a server instead of running a big power consumpting desktop 24/7. Of course for very simple purpos3 and probably as an experimental stuff. But not bad idea. I have written few years ago a tool for intarnal lan communication in the company which comprises synced and asanced messaging sastem, files and folders exchange functions, firewall solved access and everything in one jar cca 390 kb without any dependencies...there is also built in a http servlet and it runs on dalvik without problems - I have tested it. So the way is there, Even if the intention is not 100% clear.
You want to run Tomcat inside Android using dalvik? That is crazy. If it is a Web App host it somewhere and use the browser.