IOS 获取苹果手机的分辨率

IOS 获取苹果手机的分辨率

IOS 获取苹果手机的分辨率，示例代码如下：

Utils.h

#import <Foundation/Foundation.h>

enum {
    UIDevice_iPhone3                = 1,    // iPhone 1,3,3GS Standard Resolution   (320x480px)
    UIDevice_iPhone4                = 2,    // iPhone 4,4S High Resolution          (640x960px)
    UIDevice_iPhone5                = 3,    // iPhone 5 High Resolution             (640x1136px)
    UIDevice_iPad2                  = 4,    // iPad 1,2 Standard Resolution         (1024x768px)
    UIDevice_iPad3                  = 5     // iPad 3,4 High Resolution             (2048x1536px)
}; typedef NSUInteger UIDeviceResolution;

@interface Utils : NSObject

#pragma mark - UIDevice
+ (UIDeviceResolution) currentResolution;

@end

Utils.m

#import "Utils.h"

static int _currentResolution = -1;

@implementation Utils

////////////////////////////////////////////////////////////////////////////////
#pragma mark - UIDevice
////////////////////////////////////////////////////////////////////////////////
+ (UIDeviceResolution) currentResolution {

    if (_currentResolution > 0) {
        return _currentResolution;
    }

    if(UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone){
        if ([[UIScreen mainScreen] respondsToSelector: @selector(scale)]) {
            //NSLog(@" [[UIScreen mainScreen] respondsToSelector: @selector(scale)]  == YES");

            CGSize result = [[UIScreen mainScreen] bounds].size;
            result = CGSizeMake(result.width * [UIScreen mainScreen].scale, result.height * [UIScreen mainScreen].scale);

            if (result.height == 480) {
                _currentResolution = UIDevice_iPhone3;
            } else if(result.height == 960 ){
                _currentResolution = UIDevice_iPhone4;
            } else {
                _currentResolution = UIDevice_iPhone5;
            }
        } else{
            _currentResolution = UIDevice_iPhone3;
        }
    } else{
        if ([[UIScreen mainScreen] respondsToSelector: @selector(scale)]) {
            _currentResolution = UIDevice_iPad3;
        } else {
            _currentResolution = UIDevice_iPad2;
        }
    }

    return _currentResolution;
}


@end

扩充：

获取当前手机的系统版本号：

[[[UIDevice currentDevice] systemVersion] floatValue]