如何在iOS中获取屏幕的宽度和高度？

如何在iOS中获取屏幕尺寸？您发布的代码的问题在于，您希望显示尺寸与屏幕尺寸相匹配，而且正如您所见，情况并非总是如此。如果需要屏幕尺寸，则应查看代表屏幕本身的对象，如下所示：

CGRect screenRect = [[UIScreen mainScreen] bounds];
CGFloat screenWidth = screenRect.size.width;
CGFloat screenHeight = screenRect.size.height;

拆分视图的更新：在评论中，Dmitry问：如何在拆分视图中获取屏幕尺寸？上面给出的代码即使在分屏模式下也报告屏幕的大小。使用分屏模式时，应用程序的窗口会更改。如果上面的代码没有提供您所期望的信息，则与OP一样，您正在寻找错误的对象。但是，在这种情况下，您应该查看窗口而不是屏幕，如下所示：

CGRect windowRect = self.view.window.frame;
CGFloat windowWidth = windowRect.size.width;
CGFloat windowHeight = windowRect.size.height;

斯威夫特4.2

let screenRect = UIScreen.main.bounds
let screenWidth = screenRect.size.width
let screenHeight = screenRect.size.height

// split screen            
let windowRect = self.view.window?.frame
let windowWidth = windowRect?.size.width
let windowHeight = windowRect?.size.height

埃输林桨铃

小心[UIScreen mainScreen]也包含状态栏，如果要检索应用程序的框架（不包括状态栏），则应使用

+ (CGFloat) window_height   {
    return [UIScreen mainScreen].applicationFrame.size.height;
}

+ (CGFloat) window_width   {
    return [UIScreen mainScreen].applicationFrame.size.width;
}

疼嘶桐

我已经将上述Objective-C的一些答案翻译成了Swift代码。每次翻译都参考原始答案。主要答案

let screen = UIScreen.main.bounds
let screenWidth = screen.size.width
let screenHeight = screen.size.height

简单功能答案

func windowHeight() -> CGFloat {
    return UIScreen.mainScreen().applicationFrame.size.height
}

func windowWidth() -> CGFloat {
    return UIScreen.mainScreen().applicationFrame.size.width
}

设备方向答案

var screenHeight : CGFloat
let statusBarOrientation = UIApplication.sharedApplication().statusBarOrientation
// it is important to do this after presentModalViewController:animated:
if (statusBarOrientation != UIInterfaceOrientation.Portrait
    && statusBarOrientation != UIInterfaceOrientation.PortraitUpsideDown){
    screenHeight = UIScreen.mainScreen().applicationFrame.size.width
} else {
    screenHeight = UIScreen.mainScreen().applicationFrame.size.height
}

记录答案

let screenWidth = UIScreen.mainScreen().bounds.size.width
let screenHeight = UIScreen.mainScreen().bounds.size.height
println(\"width: \\(screenWidth)\")
println(\"height: \\(screenHeight)\")

拈吉勉犬姆

我以前使用过这些便捷方法：

- (CGRect)getScreenFrameForCurrentOrientation {
    return [self getScreenFrameForOrientation:[UIApplication sharedApplication].statusBarOrientation];
}

- (CGRect)getScreenFrameForOrientation:(UIInterfaceOrientation)orientation {

    CGRect fullScreenRect = [[UIScreen mainScreen] bounds];

    // implicitly in Portrait orientation.
    if (UIInterfaceOrientationIsLandscape(orientation)) {
      CGRect temp = CGRectZero;
      temp.size.width = fullScreenRect.size.height;
      temp.size.height = fullScreenRect.size.width;
      fullScreenRect = temp;
    }

    if (![[UIApplication sharedApplication] statusBarHidden]) {
      CGFloat statusBarHeight = 20; // Needs a better solution, FYI statusBarFrame reports wrong in some cases..
      fullScreenRect.size.height -= statusBarHeight;
    }

    return fullScreenRect;
}

才改隘瘁

我意识到这是一篇过时的文章，但是有时我发现#define这样的常量很有用，因此我不必担心：

#define DEVICE_SIZE [[[[UIApplication sharedApplication] keyWindow] rootViewController].view convertRect:[[UIScreen mainScreen] bounds] fromView:nil].size

无论设备方向如何，以上常量均应返回正确的大小。然后获取尺寸非常简单：

lCurrentWidth = DEVICE_SIZE.width;
lCurrentHeight = DEVICE_SIZE.height;

痰降锭骂奸

获取设备尺寸以及考虑方向非常非常容易：

// grab the window frame and adjust it for orientation
UIView *rootView = [[[UIApplication sharedApplication] keyWindow] 
                                   rootViewController].view;
CGRect originalFrame = [[UIScreen mainScreen] bounds];
CGRect adjustedFrame = [rootView convertRect:originalFrame fromView:nil];

盛虱

我们也必须考虑设备的方向：

CGFloat screenHeight;
// it is important to do this after presentModalViewController:animated:
if ([[UIApplication sharedApplication] statusBarOrientation] == UIDeviceOrientationPortrait || [[UIApplication sharedApplication] statusBarOrientation] == UIDeviceOrientationPortraitUpsideDown){
    screenHeight = [UIScreen mainScreen].applicationFrame.size.height;
}
else{
    screenHeight = [UIScreen mainScreen].applicationFrame.size.width;
}

末钉蹈泰唬

NSLog(@\"%.0f\", [[UIScreen mainScreen] bounds].size.width);
NSLog(@\"%.0f\", [[UIScreen mainScreen] bounds].size.height);

泻伴墓荒

在这里，我已经更新了迅速3 从iOS 9开始不推荐使用applicationFrame 很快，他们删除了（）并且更改了一些命名约定，您可以在这里参考链接

func windowHeight() -> CGFloat {
    return UIScreen.main.bounds.size.height
}

func windowWidth() -> CGFloat {
    return UIScreen.main.bounds.size.width
}

皇小福另届

如果您希望屏幕的宽度/高度与设备的方向无关（适合于调整从纵向方向启动的仅纵向视图控制器的大小）：

CGFloat screenWidthInPoints = [UIScreen mainScreen].nativeBounds.size.width/[UIScreen mainScreen].nativeScale;
CGFloat screenHeightInPoints = [UIScreen mainScreen].nativeBounds.size.height/[UIScreen mainScreen].nativeScale;

[UIScreen mainScreen] .nativeBounds <-来自文档->物理屏幕的边界矩形，以像素为单位。该矩形基于设备的纵向放置。该值不会随着设备旋转而改变。

宠封钞轰

利用这些ѭ19来了解有关Swift 3.0中当前设备的有用信息

struct ScreenSize { // Answer to OP\'s question

    static let SCREEN_WIDTH         = UIScreen.main.bounds.size.width
    static let SCREEN_HEIGHT        = UIScreen.main.bounds.size.height
    static let SCREEN_MAX_LENGTH    = max(ScreenSize.SCREEN_WIDTH, ScreenSize.SCREEN_HEIGHT)
    static let SCREEN_MIN_LENGTH    = min(ScreenSize.SCREEN_WIDTH, ScreenSize.SCREEN_HEIGHT)

}

struct DeviceType { //Use this to check what is the device kind you\'re working with

    static let IS_IPHONE_4_OR_LESS  = UIDevice.current.userInterfaceIdiom == .phone && ScreenSize.SCREEN_MAX_LENGTH < 568.0
    static let IS_IPHONE_SE         = UIDevice.current.userInterfaceIdiom == .phone && ScreenSize.SCREEN_MAX_LENGTH == 568.0
    static let IS_IPHONE_7          = UIDevice.current.userInterfaceIdiom == .phone && ScreenSize.SCREEN_MAX_LENGTH == 667.0
    static let IS_IPHONE_7PLUS      = UIDevice.current.userInterfaceIdiom == .phone && ScreenSize.SCREEN_MAX_LENGTH == 736.0
    static let IS_IPHONE_X          = UIDevice.current.userInterfaceIdiom == .phone && ScreenSize.SCREEN_MAX_LENGTH == 812.0
    static let IS_IPAD              = UIDevice.current.userInterfaceIdiom == .pad && ScreenSize.SCREEN_MAX_LENGTH == 1024.0

}


struct iOSVersion { //Get current device\'s iOS version

    static let SYS_VERSION_FLOAT  = (UIDevice.current.systemVersion as NSString).floatValue
    static let iOS7               = (iOSVersion.SYS_VERSION_FLOAT >= 7.0 && iOSVersion.SYS_VERSION_FLOAT < 8.0)
    static let iOS8               = (iOSVersion.SYS_VERSION_FLOAT >= 8.0 && iOSVersion.SYS_VERSION_FLOAT < 9.0)
    static let iOS9               = (iOSVersion.SYS_VERSION_FLOAT >= 9.0 && iOSVersion.SYS_VERSION_FLOAT < 10.0)
    static let iOS10              = (iOSVersion.SYS_VERSION_FLOAT >= 10.0 && iOSVersion.SYS_VERSION_FLOAT < 11.0)
    static let iOS11              = (iOSVersion.SYS_VERSION_FLOAT >= 11.0 && iOSVersion.SYS_VERSION_FLOAT < 12.0)
    static let iOS12              = (iOSVersion.SYS_VERSION_FLOAT >= 12.0 && iOSVersion.SYS_VERSION_FLOAT < 13.0)

}

甲车劲

这是获取屏幕尺寸的一种快速方法：

print(screenWidth)
print(screenHeight)

var screenWidth: CGFloat {
    if UIInterfaceOrientationIsPortrait(screenOrientation) {
        return UIScreen.mainScreen().bounds.size.width
    } else {
        return UIScreen.mainScreen().bounds.size.height
    }
}

var screenHeight: CGFloat {
    if UIInterfaceOrientationIsPortrait(screenOrientation) {
        return UIScreen.mainScreen().bounds.size.height
    } else {
        return UIScreen.mainScreen().bounds.size.width
    }
}

var screenOrientation: UIInterfaceOrientation {
    return UIApplication.sharedApplication().statusBarOrientation
}

这些作为标准功能包括在： https://github.com/goktugyil/EZSwiftExtensions

驮帽俺篮号

CGFloat width = [[UIScreen mainScreen] bounds].size.width;
CGFloat height = [[UIScreen mainScreen]bounds ].size.height;

视蕉梁拌客

现代答案：如果您的应用程序支持iPad上的拆分视图，则此问题会变得有些复杂。您需要窗口的大小，而不是屏幕的大小，该窗口可能包含2个应用程序。窗口的大小在运行时也可能会有所不同。使用应用程序的主窗口的大小：

UIApplication.shared.delegate?.window??.bounds.size ?? .zero

注意：以上方法在启动时可能会在窗口变为关键窗口之前得到错误的值。如果只需要宽度，则强烈建议使用以下方法：

UIApplication.shared.statusBarFrame.width

使用UIScreen.main.bounds的旧解决方案将返回设备的边界。如果您的应用程序以拆分视图模式运行，则其尺寸错误。当应用包含2个或更多窗口且窗口尺寸较小时，最热的答案中的self.view.window可能会得到错误的大小。

讹巳漓把备

迅捷3.0 宽度

UIScreen.main.bounds.size.width

身高

UIScreen.main.bounds.size.height

链眷克袒姜

您可以使用\“ SCREEN_WIDTH \”将这些宏放在您的pch文件中，并在项目中的任何位置使用

#define SCREEN_WIDTH                ((([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortrait) || ([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortraitUpsideDown)) ? [[UIScreen mainScreen] bounds].size.width : [[UIScreen mainScreen] bounds].size.height)

和\“ SCREEN_HEIGHT \”

#define SCREEN_HEIGHT               ((([UIApplication sharedApplication].statusBarOrientation == UIInterfaceOrientationPortrait) || ([UIApplication sharedApplication].statusBarOrientation ==   UIInterfaceOrientationPortraitUpsideDown)) ? [[UIScreen mainScreen] bounds].size.height : [[UIScreen mainScreen] bounds].size.width)

使用示例：

CGSize calCulateSizze ;
calCulateSizze.width = SCREEN_WIDTH/2-8;
calCulateSizze.height = SCREEN_WIDTH/2-8;

如何在iOS中获取屏幕的宽度和高度？

16 个回复

发起人

ios

cocoa_touch

uikit

screen

问题状态

如何在iOS中获取屏幕的宽度和高度？

与内容相关的链接

16 个回复

发起人

ios

cocoa_touch

uikit

screen

问题状态