在iphone5中测试应用。
复制了一张图片,名为image1.png 和 image1@2x.png,在iphone5中实验,部分代码:
UIImage *myImage = [UIImage imageNamed:@"image1.png"] ;
CGFloat imageWidth = myImage.size.width;
CGFloat imageHeight = myImage.size.height;
NSLog(@"image %f %f", imageWidth,imageHeight);
CGRect screenBound = [[UIScreen mainScreen] bounds];
CGSize screenSize = screenBound.size;
CGFloat screenWidth = screenSize.width;
CGFloat screenHeight = screenSize.height;
NSLog(@"screen %f %f", screenWidth, screenHeight);
运行之后我在控制台看见
2013-04-05 13:13:48.386 Vallabici[2413:907] image 320.000000 57.000000
2013-04-05 13:13:48.389 Vallabici[2413:907] screen 320.000000 568.000000
没有用retina,用的是普通屏幕。
应该怎么办?