如何检测用户的 iPhone 6 Plus 是否处于标准模式或缩放模式？

Question

如何检测用户的 iPhone 6 Plus 是标准模式还是缩放模式？ 这可能吗？

我试过[UIScreen mainScreen].scale，两种情况下都报告3.0。

Answer 1

[UIScreen mainScreen].currentMode 报告：

<UIScreenMode: 0x17802f240; size = 1242.000000 x 2208.000000> // STANDARD
<UIScreenMode: 0x178226be0; size = 1125.000000 x 2001.000000> // ZOOMED

Answer 2

有一个新成员

[[UIScreen mainScreen] nativeScale]

应该做你想做的事。它只在 iOS 8 上可用，所以你需要保护它

Answer 3

以下代码可用于获取bounds、coordinateSpace、nativeScale 和scale，即在 iPhone 6 Plus 上，nativeScale 为 2.608，当设备在缩放模式下运行时为2.88（注意在模拟器中不一样）：

UIScreen *mainScreen = [UIScreen mainScreen];
NSLog(@"Screen bounds: %@, Screen resolution: %@, scale: %f, nativeScale: %f",
          NSStringFromCGRect(mainScreen.bounds), mainScreen.coordinateSpace, mainScreen.scale, mainScreen.nativeScale);

检测 iPhone 6 Plus 的代码：

-(BOOL)iPhone6PlusDevice{
    // Scale is 3 currently only for iPhone 6 Plus
    if ([UIScreen mainScreen].scale > 2.9) return YES;
    return NO;
}

或

 -(BOOL)iPhone6PlusUnZoomed{
        if ([self iPhone6PlusDevice]){
            if ([UIScreen mainScreen].bounds.size.height > 720.0) return YES;  // Height is 736, but 667 when zoomed.
        }
        return NO;
    }

注意：如果您正在检查 iPhone 6 Plus，要调整用户界面，请不要依赖.nativeScale，因为模拟器和实际设备会给出不同的结果。

Answer 4

这些选项用于检测 iPhone 设备。

#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)
#define IS_IPHONE_6 (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 667.0)
#define IS_IPHONE_6PLUS (IS_IPHONE && [[UIScreen mainScreen] nativeScale] == 3.0f)
#define IS_IPHONE_6_PLUS (IS_IPHONE && [[UIScreen mainScreen] bounds].size.height == 736.0)
#define IS_RETINA ([[UIScreen mainScreen] scale] == 2.0) 

Answer 5

从 Paula Chavarría 的 answer 更新了适用于 iOS 8 的宏（其中 [UIScreen mainScreen].bounds.size 取决于方向）：

#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 && (MAX([[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width) == 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 && MAX([[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width) == 667.0  && IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale == [UIScreen mainScreen].scale)
#define IS_ZOOMED_IPHONE_6 (IS_IPHONE && MAX([[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width) == 568.0 && IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale > [UIScreen mainScreen].scale)
#define IS_STANDARD_IPHONE_6_PLUS (IS_IPHONE && MAX([[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width) == 736.0)
#define IS_ZOOMED_IPHONE_6_PLUS (IS_IPHONE && MAX([[UIScreen mainScreen] bounds].size.height, [[UIScreen mainScreen] bounds].size.width) == 667.0 && IS_OS_8_OR_LATER && [UIScreen mainScreen].nativeScale < [UIScreen mainScreen].scale)
#define IS_IPHONE_6 (IS_STANDARD_IPHONE_6 || IS_ZOOMED_IPHONE_6)
#define IS_IPHONE_6_PLUS (IS_STANDARD_IPHONE_6_PLUS || IS_ZOOMED_IPHONE_6_PLUS)

Answer 6

这是一个简单的解决方案：

var isZoomed: Bool {
    return UIScreen.main.scale != UIScreen.main.nativeScale
}