Tag Archives: dartlang

Dartlang for devices with Rikulo

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While working with Rikulo is as straight forward as working with any other packages of Dart, to make this work in devices, one has to keep following things in mind.
First of all “Rikulo” itself is not capable of doing device level development, rather it depends upon “phonegap” (now cordova) and to compile against this, there is another package named “Rikulo Gap“. So the basic pub setup looks as this.

dependencies:
  rikulo:
  rikulo_gap:

Once installed the development process is straight forward as Dart itself while taking advantage of the Cordova APIs.
Upon completion of the development process, jump into “Dart to Javascript” compiler and generate the javascript file for the project. Fortunately thats as simple as going to “Tools” menu and clicking “Generate Javascript” in the Dart Editor. One has to select the “.dart” file first, for which the javascript file has to be generated. Upon successful generation of the file, the generated file name would be something like “myProject.dart.js”.
Now you have to add this “js” file in your “html” file like the usual “script” tag. That means to deploy to Cordova, you have to add two script tags as below.

Once done, open up the Eclipse or which ever IDE you are using to develop the Cordova (phonegap) applications, copy the “.html” and “.js” file into the respective folders of the Cordova project.
Lastly, but most importantly, remove the version number from the cordova JS file (for example cordova-2.3.0.js to cordova.js).
Now we have a workable native application built with Dart, Rikulo and Cordova.

Happy Darting !

Dartlang, the basics

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The basic things, which will help one, moving ahead in the Dart language are as below.
Its class based.
Every class has got a constructor. If one is not written, its been added by the language itself.
Constructor is not inherited.
Multiple constructors are possible.

Private properties are written with an underscore. 

int _age=20;

The getter and setter are just methods with “get” and “set” added before it. 

int get userAge{}

Inside a string the if something is written between “${” and “}” that value will be evaluated and appended to the string. 

 'Person is of age ${j.userAge}'

Hope that helps to get you started in the language.

Some interestin Dartlang packages

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There are various packages with different intentions are available to Dartlang in a global space known as “pub“. At present there are two of these packages which seems interesting to me.

  1. Dartflash
  2. Rikulo

As you might be already guessing that “Dartflash” is a port of Flash API to Dartlang. That makes any flash developer instantly play with “canvas” element of HTML5. So yes, its not working on the DOM of the page rather works on the “canvas” element of the DOM.
The second one, that is “Rikulo” seems to promise a lot. It says, it can create “cross-platform web and native mobile applications using HTML5″, while its true to create web applications, but the native mobile application is done through, you guessed it right, phonegap(now known as CORDOVA). And now there is another dart package,which is the port of CORDOVA in Dartlang. Its known as

  • Rikulo Gap

    • That means, one has to have the “Phone Gap” development environment ready to start doing mobile development.
    Rikulo works in DOM manipulation and gives a displaylist hierarchy (if one compare it with flashplayer displaylist, its similar in concept and how it works).

    Some interesting Dartlang packages

    Posted on by

    There are various packages with different intentions are available to Dartlang in a global space known as “pub“. At present there are two of these packages which seems interesting to me.

    1. Dartflash
    2. Rikulo

    As you might be already guessing that “Dartflash” is a port of Flash API to Dartlang. That makes any flash developer instantly play with “canvas” element of HTML5. So yes, its not working on the DOM of the page rather works on the “canvas” element of the DOM.
    The second one, that is “Rikulo” seems to promise a lot. It says, it can create “cross-platform web and native mobile applications using HTML5″, while its true to create web applications, but the native mobile application is done through, you guessed it right, phonegap(now known as CORDOVA). And now there is another dart package,which is the port of CORDOVA in Dartlang. Its known as

  • Rikulo Gap

    • That means, one has to have the “Phone Gap” development environment ready to start doing mobile development.
    Rikulo works in DOM manipulation and gives a displaylist hierarchy (if one compare it with flashplayer displaylist, its similar in concept and how it works).