#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)或者使用:
#define NSFoundationVersionNumber_iOS_9_0 1240.1#define NSFoundationVersionNumber_iOS_9_1 1241.14#define NSFoundationVersionNumber_iOS_9_2 1242.12#define NSFoundationVersionNumber_iOS_9_3 1242.12#define NSFoundationVersionNumber_iOS_9_4 1280.25#define NSFoundationVersionNumber_iOS_9_x_Max 1299Swift中这样写:
if NSProcessInfo().isOperatingSystemAtLeastVersion(NSOperatingSystemVersion(majorVersion: 10, minorVersion: 0, patchVersion: 0)) { // 代码块}或者使用
if #available(iOS 10.0, *) { // 代码块} else { // 代码块}2.隐私数据访问问题:
这是因为iOS对用户的安全和隐私的增强,在申请很多私有权限的时候都需要添加描述,但是,在使用Xcode 8之前的Xcode还是使用系统的权限通知框.
要想解决这个问题,只需要在info.plist添加NSContactsUsageDescription的key, value自己随意填写就可以,这里列举出对应的key(Source Code模式下):
<!-- 相册 --> <key>NSPhotoLibraryUsageDescription</key> <string>App需要您的同意,才能访问相册</string> <!-- 相机 --> <key>NSCameraUsageDescription</key> <string>App需要您的同意,才能访问相机</string> <!-- 麦克风 --> <key>NSMicrophoneUsageDescription</key> <string>App需要您的同意,才能访问麦克风</string> <!-- 位置 --> <key>NSLocationUsageDescription</key> <string>App需要您的同意,才能访问位置</string> <!-- 在使用期间访问位置 --> <key>NSLocationWhenInUseUsageDescription</key> <string>App需要您的同意,才能在使用期间访问位置</string> <!-- 始终访问位置 --> <key>NSLocationAlwaysUsageDescription</key> <string>App需要您的同意,才能始终访问位置</string> <!-- 日历 --> <key>NSCalendarsUsageDescription</key> <string>App需要您的同意,才能访问日历</string> <!-- 提醒事项 --> <key>NSRemindersUsageDescription</key> <string>App需要您的同意,才能访问提醒事项</string> <!-- 运动与健身 --> <key>NSMotionUsageDescription</key> <string>App需要您的同意,才能访问运动与健身</string> <!-- 健康更新 --> <key>NSHealthUpdateUsageDescription</key> <string>App需要您的同意,才能访问健康更新 </string> <!-- 健康分享 --> <key>NSHealthShareUsageDescription</key> <string>App需要您的同意,才能访问健康分享</string> <!-- 蓝牙 --> <key>NSBluetoothPeripheralUsageDescription</key> <string>App需要您的同意,才能访问蓝牙</string> <!-- 媒体资料库 --> <key>NSAppleMusicUsageDescription</key> <string>App需要您的同意,才能访问媒体资料库</string>如果不起作用,可以请求后台权限,类似于这样:
<key>UIBackgroundModes</key><array> <!-- 在这里写上你在后台模式下要使用权限对应的key --> <string>location</string>...</array>或者在Xcode里选中当前的target,选择Capabilities,找到Background Modes,打开它,在里面选择对应权限
3.UIColor的问题
官方文档中说:大多数core开头的图形框架和AVFoundation都提高了对扩展像素和宽色域色彩空间的支持.通过图形堆栈扩展这种方式比以往支持广色域的显示设备更加容易。现在对UIKit扩展可以在sRGB的色彩空间下工作,性能更好,也可以在更广泛的色域来搭配sRGB颜色.如果你的项目中是通过低级别的api自己实现图形处理的,建议使用sRGB,也就是说在项目中使用了RGB转化颜色的建议转换为使用sRGB,在UIColor类中新增了两个api:
- (UIColor *)initWithDisplayP3Red:(CGFloat)displayP3Red green:(CGFloat)green blue:(CGFloat)blue alpha:(CGFloat)alpha NS_AVAILABLE_IOS(10_0);+ (UIColor *)colorWithDisplayP3Red:(CGFloat)displayP3Red green:(CGFloat)green blue:(CGFloat)blue alpha:(CGFloat)alpha NS_AVAILABLE_IOS(10_0);4.真彩色的显示
<string>UIWhitePointAdaptivityStyleStandard</string> // 标准模式<string>UIWhitePointAdaptivityStyleReading</string> // 阅读模式<string>UIWhitePointAdaptivityStylePhoto</string> // 图片模式<string>UIWhitePointAdaptivityStyleVideo</string> // 视频模式<string>UIWhitePointAdaptivityStyleStandard</string> // 游戏模式也就是说如果你的项目是阅读类的,就选择UIWhitePointAdaptivityStyleReading这个模式,五种模式的显示效果是从上往下递减,也就是说如果你的项目是图片处理类的,你选择的是阅读模式,给选择太好的效果会影响性能.
<key>NSAppTransportSecurity</key> <dict> <key>NSExceptionDomains</key> <dict> <key>sina.cn</key> <dict> <key>NSThirdPartyExceptionMinimumTLSVersion</key> <string>TLSv1.0</string> <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/> <key>NSIncludesSubdomains</key> <true/> </dict> <key>weibo.cn</key> <dict> <key>NSThirdPartyExceptionMinimumTLSVersion</key> <string>TLSv1.0</string> <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/> <key>NSIncludesSubdomains</key> <true/> </dict> <key>weibo. com</key> <dict> <key>NSThirdPartyExceptionMinimumTLSVersion</key> <string>TLSv1.0</string> <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/> <key>NSIncludesSubdomains</key> <true/> </dict> <key>sinaimg.cn</key> <dict> <key>NSThirdPartyExceptionMinimumTLSVersion</key> <string>TLSv1.0</string> <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/> <key>NSIncludesSubdomains</key> <true/> </dict> <key>sinajs.cn</key> <dict> <key>NSThirdPartyExceptionMinimumTLSVersion</key> <string>TLSv1.0</string> <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/> <key>NSIncludesSubdomains</key> <true/> </dict> <key>sina.com.cn</key> <dict> <key>NSThirdPartyExceptionMinimumTLSVersion</key> <string>TLSv1.0</string> <key>NSThirdPartyExceptionRequiresForwardSecrecy</key> <false/> <key>NSIncludesSubdomains</key> <true/> </dict> </dict> </dict>4.在iOS 10 中info.plist文件新加入了NSAllowsArbitraryLoadsInWebContent键,允许任意web页面加载,同时苹果会用 ATS 来保护你的app;
上面方法到 iOS 10 不能使用了,要想修改UIStatusBar的样式或者状态使用下图中所示的属性或方法:
@property(nonatomic, readonly) UIStatusBarStyle preferredStatusBarStyle NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to UIStatusBarStyleDefault@property(nonatomic, readonly) BOOL prefersStatusBarHidden NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to NO- (UIStatusBarStyle)preferredStatusBarStyle NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to UIStatusBarStyleDefault- (BOOL)prefersStatusBarHidden NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to NO// Override to return the type of animation that should be used for status bar changes for this view controller. This currently only affects changes to prefersStatusBarHidden.- (UIStatusBarAnimation)preferredStatusBarUpdateAnimation NS_AVAILABLE_IOS(7_0) __TVOS_PROHIBITED; // Defaults to UIStatusBarAnimationFade7.UITextField
#import <UserNotifications/NSString+UserNotifications.h>#import <UserNotifications/UNError.h>#import <UserNotifications/UNNotification.h>#import <UserNotifications/UNNotificationAction.h>#import <UserNotifications/UNNotificationAttachment.h>#import <UserNotifications/UNNotificationCategory.h>#import <UserNotifications/UNNotificationContent.h>#import <UserNotifications/UNNotificationRequest.h>#import <UserNotifications/UNNotificationResponse.h>#import <UserNotifications/UNNotificationSettings.h>#import <UserNotifications/UNNotificationSound.h>#import <UserNotifications/UNNotificationTrigger.h>#import <UserNotifications/UNUserNotificationCenter.h>#import <UserNotifications/UNNotificationServiceExtension.h>9.UICollectionViewCell的的优化
- (void)collectionView:(UICollectionView *)collectionView prefetchItemsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths NS_AVAILABLE_IOS(10_0);- (void)collectionView:(UICollectionView *)collectionView cancelPrefetchingForItemsAtIndexPaths:(NSArray<NSIndexPath *> *)indexPaths NS_AVAILABLE_IOS(10_0);在ColletionView prefetchItemsAt indexPaths这个方法是异步预加载数据的,当中的indexPaths数组是有序的,就是item接收数据的顺序;
UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init]; [refreshControl addTarget:self action:@selector(loadData) forControlEvents:UIControlEventValueChanged]; collectionView.refreshControl = refreshControl;以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。