swift 3检查iphone 6/7和6 / 7plus显示器是处于标准模式还是缩放模式

Question

我想知道如何检查用户是否将显示设置为缩放模式。

我试过这个：

public var isZoomed: Bool {
    return UIScreen.main().scale < UIScreen.main().nativeScale
}

还有：

#define IS_OS_8_OR_LATER    ([[[UIDevice currentDevice] systemVersion] floatValue] >= 8.0)
#define IS_IPAD (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)
#define IS_IPHONE (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone)
#define IS_IPHONE_5 (IS_IPHONE && ([[UIScreen mainScreen] bounds].size.height == 568.0) && ((IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale == [UIScreen mainScreen].scale) || !IS_OS_8_OR_LATER))
#define IS_STANDARD_IPHONE_6 (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 667.0  && IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale == [UIScreen mainScreen].scale)
#define IS_ZOOMED_IPHONE_6 (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 568.0 && IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale > [UIScreen mainScreen].scale)
#define IS_STANDARD_IPHONE_6_PLUS (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 736.0)
#define IS_ZOOMED_IPHONE_6_PLUS (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 667.0 && IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale < [UIScreen mainScreen].scale)

但我没有一个能奏效。

有没有办法检测设备是否被缩放，甚至在应用程序运行时强制它不被缩放？

Answer 1

使用swift 3解决方案：

if (UIScreen.main.bounds.size.height == 667.0 && UIScreen.main.nativeScale < UIScreen.main.scale){
    print("iphone 6 plus")
} else {
    print("none zoomed 6 plus")
}

if (UIScreen.main.bounds.size.height == 568.0 && UIScreen.main.nativeScale > UIScreen.main.scale) {
    print("zoomed iphone 6")
} else {
    print("none zoomed")
}