MultiPixel Development | iPhone App Developers

Droid
click here

iPhone

“This changes everything. Again” - this is true. The iPhone 4 did change everything again. It is important for all iPhone App Developers to understand how the new platform works using the updated SDK and ensuring quality performance of all new and updated iPhone Applications.

Important differences between the older iPhone platform and iPhone 4 platform Face time :

iPhone 4 provides FaceTime capability. As long as the other party has an iPhone, users can now communicate both through sound and visually through Wireless Internet (Wi-Fi).

Two cameras

iPhone 4 has two built-in cameras, one on the front above the display and one on the back next to the LED flash. The front camera has been tuned for FaceTime. It has just the right field of view and focal length to focus on your face at arm’s length.

Retina display

iPhone users need to prepare their eyes for the high resolution that the iPhone 4 provides. The pixel density is so high, your eye is unable to distinguish individual pixels. Which means Text in books, web pages, and email is crisp at any size. Images in games, movies, and photos pop off the screen. And everything is sharper.

Multitasking

Now you can purchase more apps without thinking that you won’t have time to use them. With mutlitasking, the new iPhone has created a more organized and fun way to use multiple applications at the same time. iPhone users can listen to audio in the background, receive VoIP calls while using other apps, keep GPS apps running, and be given push and local notifications.

iPhone
click here

What’s new in Xcode 4

Interface Builder – Inside

In Xcode 4, Interface Builder has been completely integrated within the Xcode IDE - there is no separate application.

Assistant

With the new Xcode Assistant, the two-pane editor layout in Xcode 4 becomes dramatically more powerful.

LLVM Compiler 2.0

The LLVM compiler is the next-generation, open source compiler technology, being used in high-performance projects around the world, and is led by engineers on Apple’s compiler team. With LLVM compiler 2.0, the full compiler stack - from the front end parser, to the back end code optimizer - completely supports C, Objective-C, and C++.

LLVM is fast. It compiles code twice as quickly as GCC, yet produces final applications that also run faster. This is because the compiler was built from the ground up as a set of highly optimized libraries, easy to extend, easy to optimize, and designed for today’s modern chip architectures.

With Xcode 4, the compiler is more than a command-line tool. LLVM is fully integrated into the IDE itself. Syntax highlighting, code completion, and every other index-driven feature is handled by the LLVM parser. If the compiler knows about a symbol, so does the Xcode IDE. C, C++, and Objective-C are all accurately understood at editing time, exactly as they are when building.