DXDevice.h文件
#import <Foundation/Foundation.h>
typedef NS_ENUM(NSInteger, DeviceSize){
UnknownSize = 0,
iPhone35inch = 1,
iPhone4inch = 2,
iPhone47inch = 3,
iPhone55inch = 4
};
@interface DXDevice : NSObject
+(DeviceSize)deviceSize;
@end
DXDevice.m文件
+(DeviceSize)deviceSize {
CGFloat screenHeight=0;
UIInterfaceOrientation orientation = [[UIApplication sharedApplication] statusBarOrientation];
if (orientation == UIDeviceOrientationPortrait)
screenHeight = [[UIScreen mainScreen] bounds].size.height;
else if((orientation == UIDeviceOrientationLandscapeRight) || (orientation == UIInterfaceOrientationLandscapeLeft))
screenHeight = [[UIScreen mainScreen] bounds].size.width;
if (screenHeight == 480)
return iPhone35inch;
else if(screenHeight == 568)
return iPhone4inch;
else if(screenHeight == 667)
return iPhone47inch;
else if(screenHeight == 736)
return iPhone55inch;
else
return UnknownSize;
}
简单用法示例
- (void)awakeFromNib
{
// 如果是4英寸,设置约束为60
if ([DXDevice deviceSize] == iPhone4inch) {
self.topConstraint.constant = 60;
}
// 如果是4.7英寸,设置约束为90
if ([DXDevice deviceSize] == iPhone47inch) {
self.topConstraint.constant = 90;
}
}
