Develop Reference

Writing for iOS and Android - possible for this function?

Read a number of questions on writing in just one language for both iOS and Android and what I learned is that it depends on the special functions you need. What I want to build is a very simple app that will ask the user what he or she is doing. We need this for billing the customers but my co-workers keep forgetting to update their time-sheet, so I want to write this little app that pops-up every x minutes and asks them what their doing. At the end of the day the list will be sent by e-mail or whatever.
Anyway.... is a pop-up from an app from the background a 'special' function? Can a general language be used on both for this?
Edit: I have searched for crossplatform tools, but all replies talk about specific functions that still require native coding. That is why I was wondering if something as simple as a popup with question and entering / saving a text, would be native or could easily be handled with a crossplatform tool.

You may use Xamarin to create a cross platform applications. I am satisfied with Xamarin platform at the moment. I have been working on native iOS, java for Android also.
Please keep in your mind that, it would be great if you are familar with these platforms because Xamarin is just a wrapper of methods which exist in the native platforms. Since I am familar with native Android and iOS, it makes me comfortable when I work on Xamarin platform.
My personal recommendation is to stick with Native platform. But if you have to work on cross platform, I believe Xamarin is a good option.
Pros:
If you are familiar with C#, it will help you a lot to develop an application for android, ios and windows platforms in Xamarin.
It is demanding platforms, and many big companies are looking Xamarin developers especially after the Microsoft acquisition.
Cons:
You need to buy a license.
There are other platforms as well, but I did not use any of them. Here are some of them
Cordova
HTML5
Unity
PhoneGap
Appcelerator
Corona
Qt
You may find useful the following urls
http://appindex.com/blog/ten-best-cross-platform-development-mobile-enterprises/
http://www.developereconomics.com/pros-cons-top-5-cross-platform-tools/

For sure what you describe can be achieved with using Ionic. Its a free solution and it comes with a lot of good documentation to get you up and running quickly. You'll need to use AngularJS for developing apps with Ionic so that might be a good solution if you know your way around that framework, or if you are familiar with Javascript or have done some web development before.
On regards to your question regarding native functionality (by popups I assume you mean notifications) Ionic sits on top of Cordova so there is a huge amount of native plugins that you can use to implement native functionality. You can take a look at plugins here.
Hope this helps!

Hybrid apps for iOS/Android/Windows 8

I hope this question is specific enough. I have a client for whom I made an iOS native app and an Android native app (same app, different platform). It's a fixed pixel design (I made this work for Android somehow:) and it works on iPad, iPhone and most Android devices (with some letterboxing). Now I am asked to write the same app for the Windows store and they want me to use HTML and JavaScript. My question is, when I use HTML and JavaScript, would it be "easy" for me to use this code into some sort of hybrid solution (PhoneGap, etc)? The app doesn't need much complicated functionality but does need to support push notifications on iOS and it needs to be able to play videos, preferably HLS. Any advice on what the best hybrid solution and do hybrid solutions allow you to build for Windows 8?

I'm a cross-platform developer working on PhoneGap and Titanium Appcelerator. The correct answer is "It depends". Currently the state of cross-platform development is not very recommendable. Yes, you can write plugins for PhoneGap and it does support windows phone but you will have a ridiculously hard time getting them to communicate with each other properly. I learnt this from experience.
If it was a hacking/hobby project to further the cause then I would say go for it but for a time-bound client project like yours, I would recommend against cross-platform solutions and go native instead. Plus native always gives considerably better control, speed and ease of development. You will probably develop it faster in native than cross platform anyway. I've played around with windows SDK and it seems easy to use and well-built with good documentation and you can use C# which is similar to Java since you have already used it on android.
You can also build windows 8 desktop apps using html and javascript natively but this isn't present in windows phone 8 yet.
As I mentioned, If you don't need too many native controls, then you can go cross-platform. For your requirements, it can be done. If you have already developed android and ios apps and only need windows app now, then going native would be easier. But if you have to make all 3 then you can go cross platform if your requirements are restricted to what you mention. Here's a good quora thread that discusses the pro's and cons:
http://www.quora.com/Is-Titanium-good-for-developing-iPhone-apps

Take a look on Xamarin
Main idea - they brings real native code for all platforms.
They have instruments to compile C# code that it can be used at all platforms
For example you should create UI in XCode (for iPhone) and use ModoDevelop to create DAL/BLL, then you can re-use C# code base over all other platforms
They have cross-platform iPhone/Android/WP7/W8 samples on GitHub
Also see Q&A on Stackoverflow tagged Xamaring

We are starting to build multiple apps for multiple clients both in IOS and Android native platforms. The problem is we are going completely native which is taking too much time.
I would like to look at the linked in method (http://arstechnica.com/information-technology/2012/10/a-behind-the-scenes-look-at-linkedins-mobile-engineering/) which is a more hybrid approach using HTML and native code.
The problem is I don't think Phonegap is that good - good for prototyping but maybe not for full versions of apps as it can be a bit slow and a bit buggy.
I would like to look into doing a model where we create like 65% HTML and 35% native to that device (like linked in)
Would anyone have any suggestions for this? Would people say we need a massive development team to pull such an approach off?
I welcome thought:)
Thanks

Is PhoneGap the right choice for me?

I am new to PhoneGap, and I have several questions:
I need a way to develop an application that will have iOS, Android, and other platform compatibility. In other words, I want to write 1 app and get compatibility versions for different platforms.
By reading the "Get Started" guide linked by the PhoneGap website, I found there are different procedures for different platforms. So to have compatibility versions across platforms, do I have to go one-by-one and change all of them if I make a modification to my app?
Also, what exactly is PhoneGap Build? It seems like I can avoid all that hassle mentioned previously and toss my app into the PhoneGap Build? Do I really not have to do anything besides writing the app? What if I need to make changes?
And finally, I've read that PhoneGap works with HTML, CSS, and Javascript, but not PHP. What if my app needs to contact a server? Can PhoneGap handle that?
Thank you for bearing with all these questions!

PhoneGap achieves platform compatibility by embedding a webview within your application. Therefore you can apply your knowledge in HTML, CSS, JavaScript and it additionally provides ways to interact with native features (e.g. camera, gps, ...).
With PhoneGap you write one general web app, tweak parts for the specific platform (sometimes you do not have to this at all) and build it for that platform. The latter can be handled with PhoneGap Build service: It takes your webapp and bundles it for the mobile operating systems out there (Embeds it within a Java app on Android, an Objective-C app on iOs)
PhoneGap is able to communicate with a server hosting a PHP script just as every other web application. Trying to dynamically load resources from remote sites can be quite a hassle but this is another question.

traumalles is correct. All your HTML/Javascript/CSS is running from within a webview on the device. Your code is, therefore, all "client-side." You can communicate with a server just like with any other page. When they say PhoneGap isn't compatible with PHP, they mean only that PhoneGap can't execute PHP code like it's a server, because it's not. It's just loading your webapp in, basically, a browser.

One other important question is what exactly do you mean with "other platforms" phonegap does provide many functionality for nearly every platform but the different webbrowser of the mobile devices have their problems and limitations.
For example are there many problems if you want to provide your application on a WindowsPhone Device because the Webbrowser has a few limitations which will cause your app to not look and behave like a native app.
Just look a bit through the phonegap API you will see that some functions are just available for IOS or for Android and there are a few only Blackberry methods and so on.
So you really have to be careful when a framework tells you it will work on all devices.
So i really don't have a problem with phonegap i worked with it very great but there will be limitations you have to deal with.
If you primarily want to develop for IOS and Android you can really achieve great native like results !

Is it possible to develop pure HTML5 applications with PhoneGap?

Even after searching PhoneGap's website and their support group, I still cannot find an answer to my question:
Currently, I'm planning on developing an application that should exists as a pure HTML5 application, being able to run in any modern browser (Google Chrome, Safari, etc.) as well as on Android/iPad as native mobile applications.
So my question is:
Is it possible to use the same code base to develop both pure HTML5 applications as well as native mobile applications with PhoneGap?

PhoneGap is in effect a runtime environment for HTML, javascript, and any CSS that may accompany your code. So in short:
Yes, but it is recommended that you have some knowledge of Objective-C if you want to develop any iPhone app with extended functionality. If you have the right dimensions/proportions for the code there is no reason why you cannot simply copy that code into PhoneGap and compile it.

See, the support for #HTML5 varies from browser to browser, and varies a lot from a desktop browser to mobile browser. If one has to convert web-portal to a mobile application that can easily be done through Phonegap, you can refer to this link also. https://build.phonegap.com/ It worked fine for me.
Now lets come to Phonegap, what phonegap does is it has created wrapper through javascript that calls the native apis. Now to show content they use WebView object which renders your html5 page in your app. And you can create your own wrappers too. Not that much difficult.
So if your app is only a web based portal, that does not need much native access, you can easily reuse one codebase make #cross-platform apps using Phonegap. Else you need to go for hybrid apps.

developing smartphone apps using Rhomobile

I have been developing an Android application for about two months now, and the guy I'm writing it for wants me to use this instead of the android SDK so we can deploy the application for multiple smart phones: http://rhomobile.com/
he says you can write the application in one language and it can be deployed for most smart phones. Has anyone used this website to do something similar? Any advantages or disadvantages I should know about and tell him? Maybe someone could give me a better explanation on what this really does.
I'm current a one man army. He wants the application out for most smart phones but can afford to hire more developers.

Rhomobile will start up a small webserver on your phone and then show a webview that is directed to this webserver. You are able to write all the application logic in ruby in a way you would do it if you would write a web app that is deployed on a real web server. Rhomobile uses CSS etc. to have the app look look a little bit like a native app.
If you know Ruby you will get an App fast but it will look crappy and the user experience will be crappy too. A similar framework is appcelerator titanium they will let you write the app in Java Script and then compile it into a mix of javascript, webview and native components that run on an Iphone and on an Android phone and titanium has a much nicer user experience then rhomobile.
Visit their pages and test some of the apps that they are promoting as showcase for their frameworks.

As many developers writing apps in Objective C have learned using HTML for the view and styling with CSS styling libraries is a great way to create attractive native apps. Rhomobile's Rhodes uses this approach as well. We used to let people use whatever CSS they wanted and they could choose to use IUI, JQTouch, IWebKit, WebApp.net or any other library along with Rhodes. The best external apps all seemed to use JQTouch for styling and animated transitions.
Recently we decided to ship with our own fork of JQTouch (which we made work on Android) in order to make this even easier. The recent Rhodes master branch created apps with JQTouch builtin makes such attractive apps even easier to build, as the stylesheets are included with Rhodes scaffold-generated apps.