在iOS中如何获得屏幕的尺寸?
目前,我使用:
lCurrentWidth = self.view.frame.size.width;
lCurrentHeight = self.view.frame.size.height;
在viewWillAppear:和willAnimateRotationToInterfaceOrientation:duration:
这是我第一次看到整个屏幕的大小。第二次我得到的屏幕减去导航栏。
在iOS中如何获得屏幕的尺寸?
目前,我使用:
lCurrentWidth = self.view.frame.size.width;
lCurrentHeight = self.view.frame.size.height;
在viewWillAppear:和willAnimateRotationToInterfaceOrientation:duration:
这是我第一次看到整个屏幕的大小。第二次我得到的屏幕减去导航栏。
当前回答
iOS 13+的答案(找到键窗口的代码来源):
guard let window = UIApplication.shared.windows.first(where: { $0.isKeyWindow }) else {
return
}
let windowWidth = window.frame.width
let windowHeight = window.frame.height
其他回答
NSLog(@"%.0f", [[UIScreen mainScreen] bounds].size.width);
NSLog(@"%.0f", [[UIScreen mainScreen] bounds].size.height);
我已经把上面的一些Objective-C答案翻译成Swift代码。每一篇译文都引用了原文的答案。
主要解决途径
let screen = UIScreen.main.bounds
let screenWidth = screen.size.width
let screenHeight = screen.size.height
##简单函数回答
func windowHeight() -> CGFloat {
return UIScreen.main.bounds.size.height
}
func windowWidth() -> CGFloat {
return UIScreen.main.bounds.size.width
}
##设备朝向回答
let screenHeight: CGFloat
let statusBarOrientation = UIApplication.shared.statusBarOrientation
// it is important to do this after presentModalViewController:animated:
if (statusBarOrientation != .portrait
&& statusBarOrientation != .portraitUpsideDown) {
screenHeight = UIScreen.main.bounds.size.width
} else {
screenHeight = UIScreen.main.bounds.size.height
}
# #日志回答
let screenWidth = UIScreen.main.bounds.size.width
let screenHeight = UIScreen.main.bounds.size.height
println("width: \(screenWidth)")
println("height: \(screenHeight)")
我们还必须考虑设备的朝向:
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;
}
这里我已经更新了swift 3
applicationFrame已从iOS 9弃用
在swift 3中,他们已经删除了(),他们已经改变了一些命名惯例,你可以参考这里的链接
func windowHeight() -> CGFloat {
return UIScreen.main.bounds.size.height
}
func windowWidth() -> CGFloat {
return UIScreen.main.bounds.size.width
}
这是非常非常容易得到你的设备大小,以及考虑方向:
// 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];