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Android Developer Days is reloading for 2013

Posted by Unknown Selasa, 26 Maret 2013 0 komentar

Android Developer Days(ADD) is now reloading for 2013. ADD 2013 will take place on June 14/15, 2013 in METU Cultural and Convention Center, Ankara, Turkey.
ADD 2013 is targeted to be the one of the biggest international tech related community organization in EMEA. The first ADD was on May 21/22, 2012. There were 700 participants and more than 30 speakers. ADD 2013, June 14/15, 2013, will have more participants, more fun, more networking and more inspiration.
Take a look at the About, Call for submissions and Participation Form.

ADD is a community conference organized by:

Call For Submissions

You can join the conference with the followings:

Presentations that is 15-20 minutes or 40-45 minutes long.
Quickie: 10 minute presentation in small rooms.
Poster: You can show your applications in a place dedicated for posters.
Workshop: Presentations with hands on coding, 40 minutes long.
Indicate your contribution in OpenConf and please indicate how much your presentation is going to take when submitting it to OpenConf Deadline of Call for Submissions is 1st May 2013.
Subjects:

Future Technologies
Mobile World
Future of Mobile World
New Generation Mobile Devices (Project Glass)
Android OS
Future Versions
Android in Different Architectures
Android in Different Areas(Industry, Defense, Home Electronics etc.)
Android App Development
New Features and Capabilities
App Development Best Practises
Android SDK Tools
UI(User Interface) / UX (User Experience) Design
App Monetization
Ad Integration
In-app Billing
User Statistics
Android NDK
Cross Platform App Development Frameworks
HTML5
Javascript
Game Development
Google TV
Google Playstore
Communication Solutions (NFC, Bluetooth, Wi-fi)
3G, 4G Wide Band Communication
Cloud
Google Cloud Messaging for Android
Google App Engine
Augmented Reality
Social Media
Location Based Services and Maps
Mobile Education (Fatih Project)
Mobile Payment
Security
Arduino
Software Development Methodologies
Success Stories
GWT

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Implementing Singletons for the iOS platform

Posted by Unknown Jumat, 08 Maret 2013 0 komentar

The Singleton design pattern is one of the most frequently used design pattern when developing for the iOS platform. It is a very powerful way to share data across different parts of an iOS application without having to explicitly pass the data around manually.

Overview

Singleton classes play an important role in iOS as they exhibit an extremely useful design pattern. Within the iOS SDK, the UIApplication class has a method called sharedApplication which when called from anywhere will return the UIApplication instance that is associated with the currently running application.

How to implement the Singleton Class

You can implement the Singleton class in Objective-C as follows:

`MyManager.h`


@interface MySingletonManager : NSObject {
    NSString *someProperty;
}


@property (nonatomic, retain) NSString *someProperty;

+ (id)sharedManager;

@end

`MyManager.m`

#import "MySingletonManager.h"

@implementation MySingletonManager

@synthesize someProperty;

#pragma mark Singleton Methods

+(id) sharedManager {
    static MySingletonManager *sharedMySingletonManager = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        sharedMySingletonManager = [[self alloc] init];

    });
    return sharedMySingletonManager;
}
                  
- (id)init {
    if (self = [super init]) {
        someProperty = @"Default Property";
    }
    return self;
}

- (void)dealloc {
    // should never be called, but included here for clarity
}

@end

The above code fragment defines a static variable called sharedMySingletonManager which is then initialized once and only once in sharedManager. The way that we ensure that it is only created once is by using the dispatch_once method from the Grand Central Dispatch (GCD). This is thread safe and handled entirely by the OS so you do not need to worry about it at all.

If you rather not use GCD, then you can the following code fragment for sharedManager:

Non-GCD Based

+ (id)sharedManager {
    @synchronized(self) {
        if (sharedMySingletonManager == nil)
            sharedMySingletonManager = [[self alloc] init];
    }
    return sharedMySingletonManager;
}

Then, you can reference the Singleton from anywhere by calling the function below:

Referencing the Singleton

MySingletonManager *sharedManager = [MySingletonManager sharedManager];
Happy Singleton'ing! If you find this post useful, then mention me in the comments.

View more documents from tasneemsayeed.

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How to Create a Local SVN Repository

Posted by Unknown Rabu, 20 Februari 2013 0 komentar

Apache Subversion (SVN) is a software versioning and revision control system which is widely used in software industry. SVN is very useful when we create important and huge code over a time period. Because, whatever change happened, we can go back to our previous versions of the code. And other important feature is we can mange our huge source code with a huge development team. Normally, we install SVN in a server machine.

But we can create an SVN repository in our own computer and we can mange our code locally. It is very simple and there are only few steps to complete.

First You have to install SVN in your computer. Here you can find the way to install. After installing, type the following command in the command line consecutively. This example is based on Linux OS.

mkdir /home/user/svndir - This will create a directory called 'svndir'.

cd /home/user/svndir - Go inside that directory.

svnadmin create mylocalrepo - 'mylocalrepo' is the name of your repository.

svn mkdir file:///home/user/svndir/mylocalrepo/myproject - You create a directory called 'myproject' inside your repository.

svn import /home/user/HelloWorld file:///home/user/svndir/mylocalrepo/myproject - You enter your 'HelloWorld' porject in to the local repository 'myproject' directory.

Now you are done..!

You can check your local repository content by executing following command.

svn list --verbose file:///home/user/svndir/mylocalrepo

You can use all the SVN command which has been listed here.

As an example, when you want to check out your project to your workspace type following command.

svn co file:///home/user/svndir/mylocalrepo/myproject /home/user/workspace

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Google Chrome 23 Offline Installer Free Download

Posted by Unknown Rabu, 19 Desember 2012 0 komentar

Download Google Chrome 23 Offline installer.Released Date: 20 September, 2012

Download Google Chrome 23 Offline Installer Free.
Latest Version of Google Chorme Released. Free
Download New Google Chrome 23 Full offline Portable
installer Version.Google Chorme is a Free Fastest Web
Browser in the World and Very Much Popular among the
People.

==Direct Download Link==

Size: 29 MB

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Developers: Your perspectives do matter to the mobile industry.

Posted by Unknown Jumat, 30 November 2012 0 komentar

Hello developers, please share your opinions and experience in mobile development by participating in the following survey
https://s.zoomerang.com/s/pivotalperspectivesnovember

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Marmalade SDK: Exception: Multiply Overflow

Posted by Unknown Selasa, 16 Oktober 2012 0 komentar

I was performing some transformations (scaling) on 2D sprites like this:

CIwMat2D matrix;
rot.Scale(IW_FIXED(2));

When I ran the app I received the following exception:

IwAssert failure (GEOM, 350). Message: Multiply overflow

The avoid this exception, you must set your matrix to the Identity matrix before applying transformations on it like this:

CIwMat2D matrix;
matrix.SetIdentity();
rot.Scale(IW_FIXED(2));

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Marmalade SDK: Data cache overflow allocating XXX. Increase [GX] DataCacheSize (currently XXXXX) exception

Posted by Unknown Rabu, 10 Oktober 2012 0 komentar

You may encounter this error if your application requires caching some data but the reserved cache size by your application does not have enough space.

to solve this, just increase the reserved cache space defined in your app.icf file: