IOS 10 中版本的判断

来源：互联网发布：淘宝好评怎么修改编辑：程序博客网时间：2024/05/19 17:06

#define IsIOS7 ([[[[UIDevice currentDevice] systemVersion] substringToIndex:1] intValue]>=8.0)。
//在iOS10 下不能用了

[[[[UIDevice currentDevice] systemVersion] substringToIndex:1] intValue]//会永远返回 1

可以尝试使用一下方法：

//等于#define SYSTEM_VERSION_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedSame)//大于#define SYSTEM_VERSION_GREATER_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedDescending)//大于等于#define SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedAscending)//小于#define SYSTEM_VERSION_LESS_THAN(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] == NSOrderedAscending)//小于等于#define SYSTEM_VERSION_LESS_THAN_OR_EQUAL_TO(v) ([[[UIDevice currentDevice] systemVersion] compare:v options:NSNumericSearch] != NSOrderedDescending)

或者使用:

if ([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){.majorVersion = 9, .minorVersion = 1, .patchVersion = 0}]) {     NSLog(@"Hello from > iOS 9.1");}if ([NSProcessInfo.processInfo isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){9,3,0}]){     NSLog(@"Hello from > iOS 9.3");}

或者使用:

if (NSFoundationVersionNumber > NSFoundationVersionNumber_iOS_9_0) {     // do stuff for iOS 9 and newer} else {     // do stuff for older versions than iOS 9}

if ([[UIDevice currentDevice].systemVersion floatValue] >= 8.0) {} else{    #if __IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_0    #endif}

有时候会缺少一些常量,NSFoundationVersionNumber是在NSObjCRuntime.h中定义的,作为Xcode7.3.1的一部分,我们设定常熟范围从iPhone OS 2到#define NSFoundationVersionNumber_iOS_8_4 1144.17,在iOS 10(Xcode 8)中,苹果补充了缺少的数字,设置有未来的版本.

#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 1299

Swift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}

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