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  • Developing Mobile Applications: Web, Native, or Hybrid?

    - by Michelle Kimihira
    Authors: Joe Huang, Senior Principal Product Manager, Oracle Mobile Application Development Framework  and Carlos Chang, Senior Principal Product Director The proliferation of mobile devices and platforms represents a game-changing technology shift on a number of levels. Companies must decide not only the best strategic use of mobile platforms, but also how to most efficiently implement them. Inevitably, this conversation devolves to the developers, who face the task of developing and supporting mobile applications—not a simple task in light of the number of devices and platforms. Essentially, developers can choose from the following three different application approaches, each with its own set of pros and cons. Native Applications: This refers to apps built for and installed on a specific platform, such as iOS or Android, using a platform-specific software development kit (SDK).  For example, apps for Apple’s iPhone and iPad are designed to run specifically on iOS and are written in Xcode/Objective-C. Android has its own variation of Java, Windows uses C#, and so on.  Native apps written for one platform cannot be deployed on another. Native apps offer fast performance and access to native-device services but require additional resources to develop and maintain each platform, which can be expensive and time consuming. Mobile Web Applications: Unlike native apps, mobile web apps are not installed on the device; rather, they are accessed via a Web browser.  These are server-side applications that render HTML, typically adjusting the design depending on the type of device making the request.  There are no program coding constraints for writing server-side apps—they can be written in Java, C, PHP, etc., it doesn’t matter.  Instead, the server detects what type of mobile browser is pinging the server and adjusts accordingly. For example, it can deliver fully JavaScript and CSS-enabled content to smartphone browsers, while downgrading gracefully to basic HTML for feature phone browsers. Mobile apps work across platforms, but are limited to what you can do through a browser and require Internet connectivity. For certain types of applications, these constraints may not be an issue. Oracle supports mobile web applications via ADF Faces (for tablets) and ADF Mobile browser (Trinidad) for smartphone and feature phones. Hybrid Applications: As the name implies, hybrid apps combine technologies from native and mobile Web apps to gain the benefits each. For example, these apps are installed on a device, like their pure native app counterparts, while the user interface (UI) is based on HTML5.  This UI runs locally within the native container, which usually leverages the device’s browser engine.  The advantage of using HTML5 is a consistent, cross-platform UI that works well on most devices.  Combining this with the native container, which is installed on-device, provides mobile users with access to local device services, such as camera, GPS, and local device storage.  Native apps may offer greater flexibility in integrating with device native services.  However, since hybrid applications already provide device integrations that typical enterprise applications need, this is typically less of an issue.  The new Oracle ADF Mobile release is an HTML5 and Java hybrid framework that targets mobile app development to iOS and Android from one code base. So, Which is the Best Approach? The short answer is – the best choice depends on the type of application you are developing.  For instance, animation-intensive apps such as games would favor native apps, while hybrid applications may be better suited for enterprise mobile apps because they provide multi-platform support. Just for starters, the following issues must be considered when choosing a development path. Application Complexity: How complex is the application? A quick app that accesses a database or Web service for some data to display?  You can keep it simple, and a mobile Web app may suffice. However, for a mobile/field worker type of applications that supports mission critical functionality, hybrid or native applications are typically needed. Richness of User Interactivity: What type of user experience is required for the application?  Mobile browser-based app that’s optimized for mobile UI may suffice for quick lookup or productivity type of applications.  However, hybrid/native application would typically be required to deliver highly interactive user experiences needed for field-worker type of applications.  For example, interactive BI charts/graphs, maps, voice/email integration, etc.  In the most extreme case like gaming applications, native applications may be necessary to deliver the highly animated and graphically intensive user experience. Performance: What type of performance is required by the application functionality?  For instance, for real-time look up of data over the network, mobile app performance depends on network latency and server infrastructure capabilities.  If consistent performance is required, data would typically need to be cached, which is supported on hybrid or native applications only. Connectivity and Availability: What sort of connectivity will your application require? Does the app require Web access all the time in order to always retrieve the latest data from the server? Or do the requirements dictate offline support? While native and hybrid apps can be built to operate offline, Web mobile apps require Web connectivity. Multi-platform Requirements: The terms “consumerization of IT” and BYOD (bring your own device) effectively mean that the line between the consumer and the enterprise devices have become blurred. Employees are bringing their personal mobile devices to work and are often expecting that they work in the corporate network and access back-office applications.  Even if companies restrict access to the big dogs: (iPad, iPhone, Android phones and tablets, possibly Windows Phone and tablets), trying to support each platform natively will require increasing resources and domain expertise with each new language/platform. And let’s not forget the maintenance costs, involved in upgrading new versions of each platform.   Where multi-platform support is needed, Web mobile or hybrid apps probably have the advantage. Going native, and trying to support multiple operating systems may be cost prohibitive with existing resources and developer skills. Device-Services Access:  If your app needs to access local device services, such as the camera, contacts app, accelerometer, etc., then your choices are limited to native or hybrid applications.   Fragmentation: Apple controls Apple iOS and the only concern is what version iOS is running on any given device.   Not so Android, which is open source. There are many, many versions and variants of Android running on different devices, which can be a nightmare for app developers trying to support different devices running different flavors of Android.  (Is it an Amazon Kindle Fire? a Samsung Galaxy?  A Barnes & Noble Nook?) This is a nightmare scenario for native apps—on the other hand, a mobile Web or hybrid app, when properly designed, can shield you from these complexities because they are based on common frameworks.  Resources: How many developers can you dedicate to building and supporting mobile application development?  What are their existing skills sets?  If you’re considering native application development due to the complexity of the application under development, factor the costs of becoming proficient on a each platform’s OS and programming language. Add another platform, and that’s another language, another SDK. On the other side of the equation, Web mobile or hybrid applications are simpler to make, and readily support more platforms, but there may be performance trade-offs. Conclusion This only scratches the surface. However, I hope to have suggested some food for thought in choosing your mobile development strategy.  Do your due diligence, search the Web, read up on mobile, talk to peers, attend events. The development team at Oracle is working hard on mobile technologies to help customers extend enterprise applications to mobile faster and effectively.  To learn more on what Oracle has to offer, check out the Oracle ADF Mobile (hybrid) and ADF Faces/ADF Mobile browser (Web Mobile) solutions from Oracle.   Additional Information Blog: ADF Blog Product Information on OTN: ADF Mobile Product Information on Oracle.com: Oracle Fusion Middleware Follow us on Twitter and Facebook Subscribe to our regular Fusion Middleware Newsletter

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  • how to create multiple pages in Xcode iphone apps

    - by al7r
    Hi there, i am starting my experience with iphone sdk. and i have a question, which is i am trying to create two pages to the app but i don't know how to link them or design them. like when i start the Xcode i find one page named View to design in it, i want to make that page a welcoming page then the user choose one of the three choices he see in that page. Once he clicked on one of them the program take him to the next page or the page he chose. thank you

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  • Change/check minimum iPhone OS for Universal apps?

    - by Moshe
    The dropdown in XCode shows a base SDK of 3.2, but my iPod Touch (2nd generation), running OS 3.1.3, will run the app just fine in debug mode. (Command + Return/Enter) What is the actual base SDK of my iPhone/iPod touch version of the app and how can I change this? Changing it by right clicking on the project name in the "Groups and Files" pane and changing "Base SDK" under the "Build", doesn't do much. Edit: While writing this question, I found that scrolling down in "Build" and changing "iPhone OS Deployment Target" seems to be what I'm looking for, I'm posting this anyway. Perhaps someone has more insight into this...

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  • Parsing cookie headers in J2ME/BlackBerry apps

    - by Marc Novakowski
    When using an HttpConnection in a BlackBerry app, you often get HTTP cookies in the response headers. Unfortunately there are no built-in APIs to assist with the parsing of the cookie headers. Has anyone found a third-party library to assist with the parsing of the cookie header(s) into a more useful data object? Creating some custom code that just parses out the name and value of the cookie isn't too difficult, but I'd like to also consider other fields within the cookie such as the expiration and domain fields.

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  • Online Perforce Repositories

    - by Oliver Hume
    Is anyone aware of of anybody offering hosted perforce servers? It doesn't have to be free - but preferably not too expensive! My understanding of Perforce is that it's free to use for personal projects, which mine is. Currently I have a perforce server setup on the same machine as the code is on which doesn't offer much security in case of computer failure. If not, can anyone recommend one of the alternative solutions that is similar to Perforce? I have experience of SVN but cannot say I enjoy the experience.

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  • running VisualStudio CF3.5 apps on WINCE

    - by marc
    Hi, I am trying to write a program for a chinese PNA device with wince 5.0. But everytime I write a simple program in VS8 with C# and 'deploy' it to my device it just doesn't run. First it complains about disposing an object call menu, although I don't want an menu but VS8 just creates one for me. If I delete the menu from the form the program gives an exception. I installed a program call MIOPocket on the PNA with has powertoys some games and MS media player. It also creates a directory .net framework 3.5 so I known 3.5 is installed and must be working. But I think I am missing something. I am also not sure what to choice as target device ; windows mobile or WINCE. If I click the .exe file under win7 it works but under wince its a no go. Maybe someone has a clue what is going wrong ?

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  • Appengine Apps Vs Google bot web crawler

    - by sandeep koduri
    i built an appengine web app cricket.hover.in. The web app consists of about 15k url's linked in it, But even after a long time of my launch, no pages are indexed on google. Any base link place on my root site hover.in are being indexed with in minutes. but i placed the same link home page of root site a long back. but its of no use. can any one analyse , if there is any issue with cricket.hover.in or if bots have any issues with Google app engine actually tested the url using labs app of webmaster tools of google there the return is fine and html is clear. but when tested the same (cricket.hover.in) at the following urls its showing different results of failure www.dnsqueries.com/en/googlebot_simulator.php www.smart-it-consulting.com/internet/google/googlebot-spoofer/ but if i test some of my php or word press links at the above url's the results are good and fine. please help me with this.

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  • delphi prism online resources

    - by omair iqbal
    google search on ''delphi prism' , ''delphi prism resources'' or ''delphi prism code snippets'' reveal almost no good site at all are there any good programming site(s) with some good amount of code snippets and tutorials on delphi prism thanks in advance

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  • Import JSON data into Google Spreadsheet

    - by Jeremy Petzold
    I am pulling data down from a webservice and it is formated as JSON. I am writing a google apps script for google spreadsheet that will populate the data form me. my problem is, I can't seem to get it to parse out. doing: var dataset = myJSONtext; Browser.msgbox(dataset.item[0].key); errors out, saying item[0] is not defined. Is there some built in way I should be doing this? Any help would be apreciated.

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  • My ashx stopped working (Works locally, but not online)

    - by Madi D.
    i have a simple ASHX file that returns pictures upon request (mainly a counter), previously the code simply fetched pre-made pictures(already uploaded and available) and sent them to the requester.. i just modified the code,so it would take a base picture, do some modifications on it, save it to the server, then serve it to the user.. tested it locally and it worked like a charm. however when i uploaded the code to my hosting service (Godaddy..) it didnt work. Can someone point the problem out to me? Note: ASHX worked with me before,so i know the web.config and IIS are handling them properly, however i think i am missing something .. Code: <%@ WebHandler Language="C#" Class="NWEmpPhotoHandler" %> using System; using System.Web; using System.IO; using System.Drawing; using System.Drawing.Imaging; public class NWEmpPhotoHandler : IHttpHandler { public bool IsReusable { get { return true; } } public void ProcessRequest(HttpContext ctx) { try { //Some Code to fetch # of vistors from DB int x = 10,000; // # of Vistors, fetched from DB string numberOfVistors = (1000 + x).ToString(); string filePath = ctx.Server.MapPath("counter.jpg"); Bitmap myBitmap = new Bitmap(filePath); Graphics g = Graphics.FromImage(myBitmap); g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias; StringFormat strFormat = new StringFormat(); g.DrawString(numberOfVistors , new Font("Tahoma", 24), Brushes.Maroon, new RectangleF(55, 82, 500, 500),null); string PathToSave = ctx.Server.MapPath("counter-" + numberOfVistors + ".jpg"); saveJpeg(PathToSave, myBitmap, 100); if (File.Exists(PathToSave)) { ctx.Response.ContentType = "image/jpg"; ctx.Response.WriteFile(PathToSave); //ctx.Response.OutputStream.Write(picByteArray, 0, picByteArray.Length); } } catch (ArgumentException exe) { } } private ImageCodecInfo getEncoderInfo(string mimeType) { // Get image codecs for all image formats ImageCodecInfo[] codecs = ImageCodecInfo.GetImageEncoders(); // Find the correct image codec for (int i = 0; i < codecs.Length; i++) if (codecs[i].MimeType == mimeType) return codecs[i]; return null; } private void saveJpeg(string path, Bitmap img, long quality) { // Encoder parameter for image quality EncoderParameter qualityParam = new EncoderParameter(Encoder.Quality, quality); // Jpeg image codec ImageCodecInfo jpegCodec = this.getEncoderInfo("image/jpeg"); if (jpegCodec == null) return; EncoderParameters encoderParams = new EncoderParameters(1); encoderParams.Param[0] = qualityParam; img.Save(path, jpegCodec, encoderParams); } }

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  • Writing Android apps in C#

    - by JamesBrownIsDead
    I'm a C# programmer and want to write an Android app. I'm a stubborn curmudgeon and refuse to write Java ever again (after switching to C# six years ago). Besides Mono and MonoDroid (and writing Java), are there any options for me? Or should I just feel foolish for refusing to returning to my Java roots? (Please refrain from Java-related vs. C# discussion. I was being rhetorical when I asked about returning to me Java roots.)

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  • Gantt Chart online

    - by Luca
    I need to insert a horizontal bar chart in a web page. The thing I have to do is very similar to a Gantt Chart. I'd like to use a javascript library for the purpose. I tried jsgantt, but actually it is not very beautiful. I could evaluate also a server generation of the graph. In case my server side language is Python. It will be part of an internal project with no internet access, so Google Charts isn't an option.

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  • CakePHP session sharing between two apps, on the same domain

    - by Amit Yadav
    I am having two cakephp application working on the same domain. I access them like localhost:8080/wishlist & localhost:8080/lighthouse The wishlist is a separate cakePHP application and the lighthouse is a separate CakePHP application. The login page is at localhost:8080/lighthouse, now i want the session generated by the lighthouse application to be used in the wishlist application. The directory structure is /htdocs /wishlist /app /config .... /lighthouse /app /config .... I have edited the core.php file for both the application. I am using the same session cookie name and the same security sale but i am not able to get the session on the wishlist application. Can some one let me know how can i share session in between my two application.

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  • Sharp Architecture for Winform apps?

    - by CF_Maintainer
    The Sharp Architecture Contrib seems to suggest it is possible. It seemed like they had a dependency on "PostSharp" which has now been replaced with Castle interceptors. Has anyone used the Sharp Architecture for a non Web project? How was the experience? Does that mean one is locked in with castle as the IoC container when using Sharp architecture for non web purposes? If not Sharp Architecture, then what are some of the favored application frameworks for the non web world [spring.NET?] ? If one were to start a green field Winforms app, what application framework would be desirable?

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  • Facebook Canvas Apps, New API

    - by James
    I'm having some trouble with switching to the new JS API for a number of things with creating applications within FB, specifically the "Tab". <!-- function do_perm() { Facebook.showPermissionDialog('publish_stream,email,offline_access', null); } //--> This no longer works for me when called via an onclick command. Also, with the new API and an FBML app. How does this exactly work? The documentation is really poor so I am confused when looking at the old wiki, and the new developer site. Apologies for being pretty vague, but I'm just generally confused with the lack of clear direction with the new API and help would be greatly appreciated. I'm simply just trying to create a call that prompts for the new style user permission dialog, and oncomplete calls another JS function.

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  • multi thread apps crashes in release mode

    - by etzarfat
    Hello, I'm using Visual Studio 2008 (programming in c). I've a weird problem I worte a program that has 2 threads that runs simultaneously, a recording thread (using audio card to record into memory) and a translation thread (using a speech engine to recognize the words). when I run my program in debug mode (aka setting a breakpoint in the code) it runs great, however when I run in debug mode or release mode (outside the visual studio enviroment) it crashes and give me the following exception: "Unhandled exception at 0x7c911129 in LowLevel.exe: 0xC0000005: Access violation reading location 0x014c7245." My stack looks: LowLevel.exe!__set_flsgetvalue() Line 256 + 0xc bytes C LowLevel.exe!_isleadbyte_l(int c=4359676, localeinfo_struct * plocinfo=0x00000001) Line 57 C++ 014b00d8() LowLevel.exe!PlayDateOfExam(int option=1) Line 2240 + 0x7 bytes C++ LowLevel.exe!NSCThread(void * arg=0x00000000) Line 1585 + 0xb bytes C++ kernel32.dll!7c80b729() winmm.dll!76b5b294() I uses the following file in my project "nsc.lib" and WinMM.lib" I'm not really familiar with threads I used a sample (which works great) and built on it. I saw a similiar question year on the forum but I didn't really understand the answers since I'm not familiar with with threads. Can someone help me? Thanks

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  • An SVN error (200 OK) when checking out from my online repo

    - by J. LaRosee
    I'm trying to setup my first repo on my host and am getting this error when I use Tortoise to checkout the project: Error: OPTIONS of 'http://mywebsite.com/svn/myproject': 200 OK (http://mywebsite.com) Here is what I did: 1) ssh into my host and head to /home/myaccnt and 'svnadmin create svn' 2) create my project repo: 'svn mkdir svn/myproject' 3) add files to the repo: cd /home/myaccnt/.../myproject (which has /tags, /branch, /trunk); 'svn import file:///home/myaccnt/svn/myproject' (the big ole list of files being added is seen at this point.) At this point I think that I've setup my repo and imported my project into the repo. So, I'm ready to checkout using TortoiseSVN on my Windows box. So: 4) In the folder I'd like to checkout to, I rightclick and 'SVN Checkout' and then make sure my URL is: http://mywebsite.com/svn/myproject Result? Error: OPTIONS of 'http://mywebsite.com/svn/myproject': 200 OK (http://mywebsite.com) Anyone have any thoughts for me? I'm likely missing something fundemental w/ the structure of my repo or htaccess... or something. Many thanks in advance. -JL

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  • Best online course for C#/SQL for a professional engineer

    - by Rich
    I know similar questions have been asked, but I've not been able to find information specific to my situation. I'm looking for "continuing education"-type options, specifically a C# and/or SQL course. I'm a software engineering professional with a graduate level computer science degree. So I'm looking for something substantial that will be challenging. I certainly already have me feet wet in both C# and SQL I'm just looking for a more formal training to round out the edges. There is a good chance my company will pay for it if it is reasonably priced so it doesn't have to be free and preferably shouldn't be (a certificate or certification to come out of it would be nice). When I tried Google, all I found were things that sounded like crash courses (like a 3 day course or course for "dummies"), or course that did not seem very credible. Can anyone recommend a course of action for this? Thanks!

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  • Is there a suggested solution structure for ASP.NET MVC Production Apps

    - by Eoin Campbell
    In general, I don't like to keep code (BaseClasses or DataAccess Code) in the App_Code directory of an ASP.NET Site. I'll usually pull this stuff out into a MySite.BusinessLogic & MySite.DataAccess DLL's respectively. I'm wondering should I be doing the same for ASP.NET MVC. Would it be better to Organise the solution something along the lines of MySite.Common - DLL - (Basic Functionality built on .NET System Dlls) MySite.DAL - DLL - (DataAccessLayer & DBML Files) MySite.Models - DLL - (MVC Models e.g. Repository Classes) MySite.Controllers - DLL (MVC Controllers which use Models) MySite - ASP.NET MVC Site. Or am I missing something... presumably, I'll lose some of the nice (Add View, Go To Controller, context menu items that have been added)

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  • how to stop directory structure from being viewable in J2EE apps

    - by Omnipresent
    in a J2EE app if user explicitly takes out the the ending page name then what is the best way to not show the directory structure? Example: /mycoolapp/somefolder/test.jsp /mycoolapp/somefolder/ -- this will show all the files under 'somefolder' What is the best way to redirect or show the user a page saying 'not where you belong'. I want to avoid providing index.jsp in all the folders/subfolders of my application. Appserver being used is GlassFish. Also the app is using Struts2 framework, though not all of the code is in struts2. Some code is using traditional Servlets

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  • Secure online registration form to capture credit card info

    - by baraider
    We have used Google form, Wufoo form to try to securely capture the info for IN-HOUSE processing. Google form is unreliable and often blocked behind firm's firewall. Wufoo does not allow storing CC info in their database What is service or other alternative for us to securely store the cc info. The purpose is to have people manually process the registration. Once the payment goes through, we notify the customer and remove the CC info from our database.

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  • YUI Compressor and .NET Apps

    - by objektivs
    I want to use YUI Compressor (the original) and use it as part of typical MS build processes (Visual Studio 2008, MSBuild). Does anyone have any guidance or thoughts on this? For example, good ways for incorporating into project, what to do with existing CSS and JS references, and the like. I am happy to hear on the benefits of YUI Compressor .NET and alternatives but I'm mor einterested in use of the original. Thanks Scott

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  • Web Apps: Closeable Announcements/Info/Tooltip boxes (how to implement)

    - by Daxon
    I want to understand how to implement an announcement/info box system that displays a box for the user with information. The user can do nothing or close the box, but then it will never be seen again. E.g. Facebook home page. Box asking for Translators. if you leave it then its always there. But if you close it, it never appears again. Does this mean that a Boolean value needs to be used and checked for announcement/info boxes? I'm looking for a pseudo way with database tables to do this?

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