iphone-4

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Determine the hardware for iPhone

Ho开发者_Go百科w can I tell if the application is running on iPhone 4 or iPhone 3GS or an iPad? I want to determine if which hardware I\'m using and then provide additional functionality if it\'s an[详细]

2023-01-12 05:55 分类：问答
iPhone app crashing in 4.0 when switching between apps in background

I have an iphone application which has to support multitasking. But when i open the app and do some work then close, it is going to background and when open different app and then again switch to my o[详细]

2023-01-11 15:26 分类：问答
Image scaling with UIImageView on iPhone

I have a custom view which is composed of a number of UIImageViews.These UIImageViews can vary in size (from 200x200 down to 50x50).The images that they display (loaded from png files) are stored in r[详细]

2023-01-11 04:37 分类：问答
Changing Image quality for the iPhone 4 users in an iPhone app

I want to display an image to my users which is larger than the screen area and will overscroll to let the users drag it around and zoom in.[详细]

2023-01-10 23:57 分类：问答
App freeze and then crashes on splash screen

I have an iPhone App published for a while, developed under the SDK3, and everything works great. Some weeks ago, when Apple released the SDK4 I made some changes to my app to support multitasking (it[详细]

2023-01-10 07:35 分类：问答
iPhone 4 only app?

Is it possible to restrict an app to only run on an iPhone 4?I know you can have an iPad only app.And 开发者_运维百科in iTunes Connect you used to be able to indicate an iPhone only app. But now in iT[详细]

2023-01-08 19:56 分类：问答
Playing movie in iPhone 3.1 and 4.0

In iPhone 3.1 I used the following code to play a movie: moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:url];[详细]

2023-01-08 18:57 分类：问答
Maximum size of UIImage tiles for iPhone 4

I have an iPhone app containing a large static image, which is sliced into 1024x1024 tiles and put in an UIScrollView. I\'m not clear whether I can use larger tiles on the iPhone 4.[详细]

2023-01-08 15:58 分类：问答
Now allocating four times the memory with @2x images

Now that UIImage imageNamed is using @2x images for iOS4\'s retina display, there is an obvious concern that since the images are 开发者_Python百科now twice the size (pixels x pixels), that they will[详细]

2023-01-08 11:04 分类：问答
Update UIView to ScaleFactor 2.0 for the iPhone4

I have a program running beautifully on my iPhone 4. It uses a class UIView I created (called TestView) to draw graphics using Quartz (very simply graphics such as just a few CG lines and circles). I[详细]

2023-01-08 04:59 分类：问答