#import <UIKit/UIKit.h>
//获取手机屏幕长和宽
#define ScreenHEIGHT [[UIScreen mainScreen]bounds].size.height
#define ScreenWIDTH [[UIScreen mainScreen]bounds].size.width
@interface AppDelegate : UIResponder <UIApplicationDelegate>
@property (strong, nonatomic) UIWindow *window;
//横坐标缩放
@property(assign,nonatomic)float autoSizeScaleX;
//纵坐标缩放
@property(assign,nonatomic)float autoSizeScaleY;
@end
--------------------------------------------------------------------------------
#import "AppDelegate.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
AppDelegate *myDelegate=[[UIApplication sharedApplication]delegate];
//iphon4屏幕高度480
if(ScreenHEIGHT>480)
{
//以iphon5为例 得到屏幕比例
myDelegate.autoSizeScaleX=ScreenWIDTH/320;
myDelegate.autoSizeScaleY=ScreenHEIGHT/568;
}else
{
myDelegate.autoSizeScaleX=1.0;
myDelegate.autoSizeScaleY=1.0;
}
return YES;
}
-----------------------------------------------------------------------------------------------
#import "ViewController.h"
#import "AppDelegate.h"
@interface ViewController ()
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
UILabel *lbl=[[UILabel alloc]initWithFrame:CGRectMake1(100, 200, 200, 44)];
lbl.backgroundColor=[UIColor redColor];
[self.view addSubview:lbl];
}
//内联函数
CG_INLINE CGRect
CGRectMake1(CGFloat x,CGFloat y,CGFloat width,CGFloat height)
{
CGRect rect;
AppDelegate *appdelegate=[[UIApplication sharedApplication]delegate];
rect.origin.x=x*appdelegate.autoSizeScaleX;
rect.origin.y=y*appdelegate.autoSizeScaleY;
rect.size.width=width*appdelegate.autoSizeScaleX;
rect.size.height=height*appdelegate.autoSizeScaleY;
return rect;
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
这样显示出来的视图，无论在iphon任何版本中都按比例显示，而不会乱。