I want to create a web application, where I want to enable the user to create screen mockups with rectangles and circles and enable them to move objects around.
I have to support IE and other old version of browsers where HTML5 is not enabled.
Which is best platform for that other than Flash ?
If you wanted to go with HTML/CSS/JavaScript, Dojo Toolkit (JavaScript framework) provides a solid cross-browser compatible base. It provides a drawing API (dojox.gfx) that will use whatever the browser support natively to draw shapes (HTML5 canvas in new browsers, SVG, VML for older IE browsers, etc).
Related
Apple's App Store Review Guidelines state:
2.5.6 Apps that browse the web must use the appropriate WebKit framework and WebKit Javascript.
Does Safari itself use WKWebkit too? Does Safari have any extra ability than WKWebview?
I understand at the current moment, react-konva is not supported in React Native environment; however, wondering if vue-konva supports mobile app?
Or if you can suggest me a way to migrate konva canvas content to an android app?
Appreciate your response.
Konva, react-konva and vue-konva are designed to work on the web environment. The "web enviroment" usually means just web browsers like Chrome, Firefox, Safari.
There are platforms to build mobile apps with web technologies. Probably the most popular one is PhoneGap (or Cardova).
To use Konva in the mobile app you have to use such a platform and make a full app with web technologies or just open a web-view (built-in browser) for Konva part.
I'm developing a netflix client on vb.net, and i need it to run silverlight and needed extensions that netflix requires to display the video stream.
how can i change webbrowser from default to another one that works with my needs, and what browser is that?
If you're looking for a different web rendering engine you should try the Gecko web engine. From my experience it is much faster than the traditional IE engine and more compatible with plugins and web content. The engine integrates well into VB.NET applications so using it in your program should work. The engine itself does stream videos from netflix if that's the intent. you can download this rendering engine just from searching it but for convinience I'll put a link to a site where you can find it here.
I'm trying to understand how programs like PhoneGap and Adobe Air work, that allow you to 'write once and run anywhere' on mobile platforms. The way I understand it now is that you build your application as a web app using either HTML5, or flash, or I don't know what, and it takes in those files and converts them to the proper types for each mobile OS. Assuming this is correct, what I would like to know is, what the options for developing web apps that are able to be converted into apps are; and what the most popular platforms to use/learn flash, or html5, or JavaScript, or I have no idea what are.
I want to build a web app to deploy across multiple phone platforms, but I don't know where to start. Thanks for the help!
You use tools like PhoneGap to access native device API's through JavaScript. If you don't need access to these API's you can write a HTML5 app and install it using "Add to home screen" etc.
As HTML5 matures, more and more of the device API's are actually directly available through HTML5 (for instance GPS), so depending on what you want to do access it might be in/scheduled to be part of the Device API.
Write once and run anywhere
There are different frameworks that lets you deploy to multiple platforms through the device specific install process. These tools usually work in 2 ways. Run in an embedded browser, or compile to native code.
PhoneGap runs the HTML5 part of your app in an embedded browser. Other tools like MonoTouch actually cross-compiles to native code, so they run on the bare metal.
Cross platform using HTML5
There are plenty of frameworks you can use to make mobile apps with HTML5. These usually help make the app "feel native", and includes abstractions over device specific idioms that differ between the different devices.
Popular frameworks includes Sencha Touch, JQuery Mobile and a bunch of others.
If you want the users to install the app through the AppStore/Market etc. then a solution like PhoneGap is a good option. If you don't care about that you can write your app and add a meta tag like
<meta name="apple-mobile-web-app-capable" content="yes">
and when you add it to the home screen it'll look just like any other app and run in an embedded browser without the browser window etc. You can add offline capabilities using HTML5 and synch when users go on-line etc. all just using HTML5.
Have a look at the Sencha touch app gallery to see what is possible with this technology.
I'm wondering if the WebKit browsers (Safari and/or Chrome) provide a method to generate or retrieve existing thumbnails for websites. If not, is there any way to generate these client-side? If even that is not possible, is there software or a particular API to generate thumbnails server-side?
Thanks!
To people from the future:
At the time of writing, this feature is only available in Safari 5.0+. You can get thumbnails from the Tabs API. Chrome doesn't have any similar features as far as I could find.