Top "Ios4" questions

The 2010-2011 version of the iPhone/iPad/iPod Touch/Apple TV operating system family, made by Apple.

How to check programmatically if an App is installed?

I am developing an iPhone application which will install few third party applications in an enterprise. I have the information …

iphone objective-c cocoa-touch ipad ios4
Rating and reviews from within an IOS app

Possible Duplicate: Direct “rate in iTunes” link in my app? It's possible to let the user rate or write a …

iphone ipad ios ios4 rating-system
What are block-based animation methods in iPhone OS 4.0?

I am trying to implement a game using the iPhone OS 4.0 (iOS4?) SDK. In the previous versions of the SDK, …

iphone ios4 uiview core-animation
How to change the UISwitch default color(blue)

How to change the default color(blue) of a UISwitch?

ios iphone ios5 ios4
NSArray of weak references (__unsafe_unretained) to objects under ARC

I need to store weak references to objects in an NSArray, in order to prevent retain cycles. I'm not sure …

objective-c ios5 ios4 automatic-ref-counting
Gyroscope vs Accelerometer?

Now that iOS 4 is no longer NDA, I would like to know what Gyroscope has to offer over the Accelerometer …

iphone ios4 accelerometer gyroscope
Exit application in iOS 4.0

Before iOS4.0 clicking the home button on iPhone exits the application, and Apple had in their guide that programmatically exiting …

ios ios4
Developing cross platform mobile application

More and more mobile platforms are being launched and sdk's are available to developers. There are various mobile platform are …

android windows-phone-7 blackberry ios4 cross-platform
How to solve this error? "property with 'retain(or strong)' attribute must be of object type"

I have been working on an app all day which has been working fine until Xcode downloaded libraries or something …

iphone objective-c ios ios4
NSString to NSurl

having trouble getting NSSTRING to convert to NSURL, item.image, holds the url for an image that im getting through …

iphone objective-c ios4 iphone-sdk-3.0