Most graphics frameworks throughout the system, including Core Graphics, Core Image, Metal, and AVFoundation, have substantially improved support for extended-range pixel formats and wide-gamut color spaces. By extending this behavior throughout the entire graphics stack, it is easier than ever to support devices with a wide color display. In addition, UIKit standardizes on working in a new extended sRGB color space, making it easy to mix sRGB colors with colors in other, wider color gamuts without a significant performance penalty.
Here are some best practices to adopt as you start working with Wide Color.
In iOS 10, the UIColor class uses the extended sRGB color space and its initializers no longer clamp raw component values to between 0.0 and 1.0. If your app relies on UIKit to clamp component values (whether you’re creating a color or asking a color for its component values), you need to change your app’s behavior when you link against iOS 10.
When performing custom drawing in a UIView on an iPad Pro (9.7 inch), the underlying drawing environment is configured with an extended sRGB color space.
If your app renders custom image objects, use the new UIGraphicsImageRenderer class to control whether the destination bitmap is created using an extended-range or standard-range format.
If you are performing your own image processing on wide-gamut devices using a lower level API, such as Core Graphics or Metal, you should use an extended range color space and a pixel format that supports 16-bit floating-point component values. When clamping of color values is necessary, you should do so explicitly.
Core Graphics, Core Image, and Metal Performance Shaders provide new options for easily converting colors and images between color spaces.
// The textContentType property is to provide the keyboard with extra information about the semantic intent of the text [email protected](nonatomic,copy) UITextContentType textContentType NS_AVAILABLE_IOS(10_0); // default is nil
UILabel *myLabel = [UILabel new]; /*
UIFont 的preferredFontForTextStyle: 意思是指定一个样式，并让字体大小符合用户设定的字体大小。
*/
myLabel.font =[UIFont preferredFontForTextStyle: UIFontTextStyleHeadline]; /*
Indicates whether the corresponding element should automatically update its font when the device’s UIContentSizeCategory is changed.
For this property to take effect, the element’s font must be a font vended using +preferredFontForTextStyle: or +preferredFontForTextStyle:compatibleWithTraitCollection: with a valid UIFontTextStyle.
*/
//是否更新字体的变化
myLabel.adjustsFontForContentSizeCategory = YES;
You've implemented -[<UIApplicationDelegate> application:didReceiveRemoteNotification:fetchCompletionHandler:],
but you still need to add "remote-notification" to the list of your supported UIBackgroundModes in your Info.plist.
objc[5114]: Class PLBuildVersion is implemented in both /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/AssetsLibraryServices.framework/AssetsLibraryServices (0x1109a5910) and /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/System/Library/PrivateFrameworks/PhotoLibraryServices.framework/PhotoLibraryServices (0x110738210). One of the two will be used. Which one is undefined.
在模拟器中、发现“One of the two will be used. Which one is undefined.”日志
8. 找到这个资源文件修改为 8位的sRGB形式,重新编译上传你的app即可.
18、This version does not support documents saved in the Xcode 8 format. Open this document with Xcode 8 or later
