retina-display

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Can I set the scaleFactor of an UIView when I want my drawing code in -drawRect to not waste too much memory?

I am drawing something into -drawRect of an UIView, and in this case I really want a certain amount of pixels. With the retina display, my view has a scaleFactor of 2.0 and when I draw something that[详细]

2023-01-17 02:20 分类：问答
Is there something special I must know when drawing images in core graphics?

Before the retina display came to iOS, I\'ve developed some controls which are drawn using stretchable images and lots of core graphics code.[详细]

2023-01-16 22:04 分类：问答
Easy way of exporting @2x images for retina display?

I am creating a lot of webviews that must be compatible with both the iPhone 4 retina display and pre-iPhone 4 devices. It\'s painstaking to export multiple 开发者_如何学Cfiles for each image.[详细]

2023-01-16 21:30 分类：问答
Retina display compatibility

For our iPhone app, we are using 50 x 50 user image (from facebook). It works fine for iPhone 3G开发者_JAVA技巧 and 3GS but not for iPhone 4 due to its high resolution display. For iPhone 4 we tried t[详细]

2023-01-16 15:28 分类：问答
Checking if UIGraphicsBeginImageContextWithOptions is supported

I\'m working on an iOS app. It currently only works on iOS 4 since I use the following method on several occasions: \"UIGraphicsBeginImageContextWithOptions\". This method is only available in iOS 4 a[详细]

2023-01-14 08:56 分类：问答
Is CFBundleIconFiles the same as Icon File?

I am trying to add a hi-res icon to my iPhone app. Is Is CFBundleIconFiles the same as Icon Fi开发者_C百科le in the screenshot below?[详细]

2023-01-14 07:52 分类：问答
iphone how to convert my app to retina display app

How can I convert my current application to retina display app and I\'ve to make sure that the same app works in iphone 3 as well.[详细]

2023-01-13 04:18 分类：问答
iPhone 4 apps automatically scale up on iPad?

I thought I read/saw/heard something saying that apps built for iPhone 4\'s Retina Display would automatically run at 640x960 when installed on a开发者_如何学Cn iPad.However, can\'t find any documenta[详细]

2023-01-12 10:56 分类：问答
High resolution UI Elements for iPhone 4 (Tab Bar buttons...)

where can I 开发者_JAVA技巧find high resolution version of standard iPhone UI elements (like UITabBarContacts.png). I have found low resolution version of icons on some site. I need them becasue I wou[详细]

2023-01-11 08:41 分类：问答
Hi-Res @2x image not being picked up for tab bar item

I have a TabBarController that sets the image for the tab like so, in the -init method: self.tabBarItem.image = [UIImage imageNamed:@\"tabImage.png\"];[详细]

2023-01-09 04:22 分类：问答