TARGET_IPHONE_SIMULATOR在iOS 9中已弃用。TARGET_OS_SIMULATOR是替换。TARGET_OS_EMBEDDED也是可用的。

从targetconditions .h:

#如果定义(__GNUC__) & &(定义(__APPLE_CPP__) | |定义(__APPLE_CC__) | | (__MACOS_CLASSIC__)定义) …… #定义TARGET_OS_SIMULATOR 0 #定义TARGET_OS_EMBEDDED #定义TARGET_IPHONE_SIMULATOR TARGET_OS_SIMULATOR /* deprecated */ #定义TARGET_OS_NANO TARGET_OS_WATCH

我在Swift 3中使用了下面的代码

if TARGET_IPHONE_SIMULATOR == 1 {
    //simulator
} else {
    //device
}

Xcode 11, Swift 5

    #if !targetEnvironment(macCatalyst)
    #if targetEnvironment(simulator)
        true
    #else
        false        
    #endif
    #endif

来自Xcode 9.3

#if targetEnvironment(simulator)

Swift supports a new platform condition targetEnvironment with a single valid argument simulator. Conditional compilation of the form '#if targetEnvironment(simulator)' can now be used to detect when the build target is a simulator. The Swift compiler will attempt to detect, warn, and suggest the use of targetEnvironment(simulator) when evaluating platform conditions that appear to be testing for simulator environments indirectly, via the existing os() and arch() platform conditions. (SE-0190)

iOS 9+：

extension UIDevice {
    static var isSimulator: Bool {
        return NSProcessInfo.processInfo().environment["SIMULATOR_DEVICE_NAME"] != nil
    }
}

斯威夫特3:

extension UIDevice {
    static var isSimulator: Bool {
        return ProcessInfo.processInfo.environment["SIMULATOR_DEVICE_NAME"] != nil
    }
}

iOS 9之前:

extension UIDevice {
    static var isSimulator: Bool {
        return UIDevice.currentDevice().model == "iPhone Simulator"
    }
}

objective - c:

@interface UIDevice (Additions)
- (BOOL)isSimulator;
@end

@implementation UIDevice (Additions)

- (BOOL)isSimulator {
    if([[NSProcessInfo processInfo] isOperatingSystemAtLeastVersion:(NSOperatingSystemVersion){9, 0, 0}]) {
        return [NSProcessInfo processInfo].environment[@"SIMULATOR_DEVICE_NAME"] != nil;
    } else {
        return [[self model] isEqualToString:@"iPhone Simulator"];
    }
}

@end

TARGET_IPHONE_SIMULATOR在iOS 9中已弃用。TARGET_OS_SIMULATOR是替换。TARGET_OS_EMBEDDED也是可用的。

从targetconditions .h:

#如果定义(__GNUC__) & &(定义(__APPLE_CPP__) | |定义(__APPLE_CC__) | | (__MACOS_CLASSIC__)定义) …… #定义TARGET_OS_SIMULATOR 0 #定义TARGET_OS_EMBEDDED #定义TARGET_IPHONE_SIMULATOR TARGET_OS_SIMULATOR /* deprecated */ #定义TARGET_OS_NANO TARGET_OS_WATCH

swift 4.1已过时。请改用#if targetEnvironment(模拟器)。源

要检测Swift中的模拟器，您可以使用构建配置:

在Swift Compiler中定义此配置- d IOS_SIMULATOR - Custom Flags >其他Swift Flags 在下拉菜单中选择Any iOS Simulator SDK

现在你可以使用这个语句来检测模拟器:

#if IOS_SIMULATOR
    print("It's an iOS Simulator")
#else
    print("It's a device")
#endif

你也可以扩展UIDevice类:

extension UIDevice {
    var isSimulator: Bool {
        #if IOS_SIMULATOR
            return true
        #else
            return false
        #endif
    }
}
// Example of usage: UIDevice.current.isSimulator