接手公司項(xiàng)目，在里面看見(jiàn)了屏幕適配的方法祟敛，感覺(jué)很方便馆铁，缺點(diǎn)就是只支持豎屏埠巨。

1.首先在工程里面創(chuàng)建一個(gè)pch文件。這個(gè)百度一下就行侥猬，網(wǎng)址http://www.reibang.com/p/67ce72c4ad6c瞧预。
2.再來(lái)到appDelegate.h里面生成兩個(gè)屬性玖瘸。

#import <UIKit/UIKit.h>

@interface AppDelegate : UIResponder <UIApplicationDelegate>

@property (strong, nonatomic) UIWindow *window;

@property (assign, nonatomic) float autoSizeScaleX;
@property (assign, nonatomic) float autoSizeScaleY;

@end

3.來(lái)到appDelegate.m里面凿将，先將獲得屏幕的寬高寫(xiě)個(gè)宏定義，再在- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions方法里面添加下面代碼：

#define ScreenHeight [[UIScreen mainScreen] bounds].size.height
#define ScreenWidth [[UIScreen mainScreen] bounds].size.width
@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    
    AppDelegate *myDelegate = [[UIApplication sharedApplication] delegate];
    
    if(ScreenHeight > 480 && ScreenHeight<1024){
        myDelegate.autoSizeScaleX = ScreenWidth/320;
        myDelegate.autoSizeScaleY = ScreenHeight/568;
    }else if(ScreenHeight >= 1024){
        myDelegate.autoSizeScaleX = ScreenWidth/320;
        myDelegate.autoSizeScaleY = ScreenHeight*1.333333/568;
    }else
    {
        myDelegate.autoSizeScaleX = 1.0;
        myDelegate.autoSizeScaleY = 1.0;
    }

    
    
    return YES;
}

4.在pch文件里面添加AppDelegate的頭文件

#ifndef PrefixHeader_pch
#define PrefixHeader_pch

#import "AppDelegate.h"

#endif /* PrefixHeader_pch */

5.創(chuàng)建一個(gè)Header file文件如下圖

424948DD-28F6-4701-B2FB-EB5BC57D2FDD.png

6.在Header file文件里面添加下面代碼

#ifndef SetFrame_h
#define SetFrame_h
CG_INLINE CGRect CGRectMakes(CGFloat x, CGFloat y, CGFloat width, CGFloat height)
{
    AppDelegate *myDelegate = [[UIApplication sharedApplication] delegate];
    CGRect rect;
    rect.origin.x    = x * myDelegate.autoSizeScaleX;
    rect.origin.y    = y * myDelegate.autoSizeScaleY;
    rect.size.width  = width * myDelegate.autoSizeScaleX;
    rect.size.height = height * myDelegate.autoSizeScaleY;
    return rect;
}

CG_INLINE CGSize CGSizeMakes(CGFloat width, CGFloat height)
{
    AppDelegate *myDelegate = [[UIApplication sharedApplication] delegate];
    CGSize rect;
    rect.width  = width * myDelegate.autoSizeScaleX;
    rect.height = height * myDelegate.autoSizeScaleY;
    return rect;
}

CG_INLINE CGPoint CGPointMakes(CGFloat width, CGFloat height){
    AppDelegate *myDelegate = [[UIApplication sharedApplication] delegate];
    CGPoint rect;
    rect.x  = width * myDelegate.autoSizeScaleX;
    rect.y = height * myDelegate.autoSizeScaleY;
    return rect;
}

CG_INLINE CGFloat TableCellHeight(CGFloat height){
    AppDelegate *myDelegate = [[UIApplication sharedApplication] delegate];
    CGFloat newHeight;
    newHeight  = height * myDelegate.autoSizeScaleY;
    return newHeight;
}


#endif /* SetFrame_h */

7.在pch文件里面添加Header file的頭文件

#ifndef PrefixHeader_pch
#define PrefixHeader_pch

#import "AppDelegate.h"
#import "SetFrame.h"

#endif /* PrefixHeader_pch */

這樣就可以使用了价脾，有4個(gè)方法可以調(diào)用牧抵，分別是CGRectMakes(CGFloat x, CGFloat y, CGFloat width, CGFloat height)、CGSizeMakes(CGFloat width, CGFloat height)侨把、CGPointMakes(CGFloat width, CGFloat height)和TableCellHeight(CGFloat height)犀变。使用的時(shí)候直接將系統(tǒng)的修改成這是個(gè)方法，比如創(chuàng)建一個(gè)label秋柄，直接將系統(tǒng)的CGRectMake改為CGRectMakes就可以了获枝。

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMakes(10, 10,10 , 10)];
    label.backgroundColor = [UIColor redColor];
    [self.view addSubview:label];      
}