同时该API根据UIScreen的scale,自动查找包含对应高倍图后缀名(@2x)的文件,如果没找到设置默认image.scale=1.0。因此,使用该方法,无需特意指定高倍图后缀。在实际运行时,系统如果发现当前设备是Retina屏(scale=2),会自动寻找"*@2x.png"命名格式的图片,加载针对Retina屏的图片素材,否则会失真。 <2>+imageWithConten...
同时该API根据UIScreen的scale,自动查找包含对应高倍图后缀名(@2x)的文件,如果找到二倍图,则image.scale=2.0,对应逻辑size大小以point度量(pixel度量的一半);如果没找到设置默认image.scale=1.0,对应逻辑size大小同像素尺寸。因此,使用该方法,无需特意指定高倍图后缀。在实际运行时,系统如果发现当前设备是Retina屏(sc...
同时该API根据UIScreen的scale,自动查找包含对应高倍图后缀名(@2x)的文件,如果找到二倍图,则image.scale=2.0,对应逻辑size大小以point度量(pixel度量的一半);如果没找到设置默认image.scale=1.0,对应逻辑size大小同像素尺寸。因此,使用该方法,无需特意指定高倍图后缀。在实际运行时,系统如果发现当前设备是Retina屏(...
同时该API根据UIScreen的scale,自动查找包含对应高倍图后缀名(@2x)的文件,如果找到二倍图,则image.scale=2.0,对应逻辑size大小以point度量(pixel度量的一半);如果没找到设置默认image.scale=1.0,对应逻辑size大小同像素尺寸。因此,使用该方法,无需特意指定高倍图后缀。在实际运行时,系统如果发现当前设备是Retina屏(sc...
1 point = scale pixel（在iPhone4~6中，缩放因子scale=2；在iPhone6+中，缩放因子scale=3）。可以理解为：scale=绝对长度比（point/pixel）= 单位长度内的数量比（pixel/point）UIScreen.h中定义了该属性：//This value reflects the scale factor needed to convert from the default logical ...
以下基于UIImage的两类初始化API简介高倍图的适配:<1>+imageNamed:该方法使用系统缓存,适合表视图重复加载图像的情形。同时该API根据UIScreen的scale,自动查找包含对应高倍图后缀名(@2x)的文件,如果找到二倍图,则image.scale=2.0,对应逻辑size大小以point度量(pixel度量的一半);如果没找到设置默认image.scale=1.0,...
iPhone Physical Pixels– This is the actual screen’s pixel resolution. The iPhone 6 Plus is using a a larger image resolution on a screen with a smaller number of physical pixels, so it needs to be downsampled to this size. This value is really only important in a specifications perspecti...
where is it now referred to as a “Dynamic Island”. The opaque area of the pill-shaped region hiding the front TrueDepth and IR cameras is no longer a notch and is made to “expand” in OLED screen in a dynamic way giving the illusion that it is part of the display, and not merel...
Display size (inches) 6.1-inch (diagonal) all-screen OLED display Show more details Show more details Show more details Camera & video Aperture 48MP Fusion: 24 mm, ƒ/1.78 aperture, second-generation sensor-shift optical image stabilization, 100% Focus Pixels, support for super-high-resolution...
How to reduce photo file size on iPhone 15/14/13/12/11 for free by changing JPEG format to HEIC on iPhone: Step 1: Open iPhone settings and Open Camera. To change JPEG format to HEIC format, go to the iPhone home screen and openSettings. In the options that open up, scroll downward...