自動計算各類狀況下的指定屏幕尺寸的類

    很少說，直接上代碼：

#import <Foundation/Foundation.h>

@interface AdaptiveServer : NSObject

@property (nonatomic, assign) CGRect navigationBarFrame;
@property (nonatomic, assign) CGRect backgroundViewFrame;

- (void)setBarHeight:(CGFloat)barHeight;

+ (CGRect)getBaseNavigationBarFrameWithNavigationBarHeight:(CGFloat)barHeight;
+ (CGRect)getBaseBackgroundViewFrameWithNavigationBarHeight:(CGFloat)barHeight;

@end

#import "AdaptiveServer.h"

@interface AdaptiveServer()

@property (nonatomic, assign) CGFloat navigationBarHeight;

@end

@implementation AdaptiveServer

- (id)init
{
    self = [super init];
    if (self) {
        
    }
    
    return self;
}

- (void)setBarHeight:(CGFloat)barHeight
{
    self.navigationBarHeight = barHeight;
}

- (void)setup
{
    if ([UIApplication sharedApplication].statusBarHidden == YES) {
        
        [self statusBarIsHidden];
        
    }else {
        
        [self statusBarIsShow];
    }
}

- (void)statusBarIsHidden
{
    [self autoLayoutWithV6Height:self.navigationBarHeight V7Height:self.navigationBarHeight];
}

- (void)statusBarIsShow
{
    [self autoLayoutWithV6Height:self.navigationBarHeight V7Height:self.navigationBarHeight + 20];
}

- (void)autoLayoutWithV6Height:(CGFloat)v6Height V7Height:(CGFloat)v7Height
{
    CGRect baseFrame = [UIScreen mainScreen].bounds;
    self.navigationBarFrame = baseFrame;
    self.backgroundViewFrame = baseFrame;
    
    CGRect tmpNavigationBarFrame = self.navigationBarFrame;
    CGRect tmpBackgroundViewFrame = self.backgroundViewFrame;

    if ([[[UIDevice currentDevice] systemVersion] floatValue] >= 7) {

        tmpNavigationBarFrame.size.height = v7Height;
        tmpBackgroundViewFrame.size.height = baseFrame.size.height - v7Height;
        tmpBackgroundViewFrame.origin.y = v7Height;
        
    }else {

        tmpNavigationBarFrame.size.height = v6Height;
        tmpBackgroundViewFrame.size.height = baseFrame.size.height - v6Height;
        tmpBackgroundViewFrame.origin.y = v6Height;
    }
    
    self.navigationBarFrame = tmpNavigationBarFrame;
    self.backgroundViewFrame = tmpBackgroundViewFrame;
}

+ (CGRect)getBaseNavigationBarFrameWithNavigationBarHeight:(CGFloat)barHeight
{
    AdaptiveServer *adaptiveServer = [[AdaptiveServer alloc] init];
    [adaptiveServer setBarHeight:barHeight];
    [adaptiveServer setup];
    return adaptiveServer.navigationBarFrame;
}

+ (CGRect)getBaseBackgroundViewFrameWithNavigationBarHeight:(CGFloat)barHeight
{
    AdaptiveServer *adaptiveServer = [[AdaptiveServer alloc] init];
    [adaptiveServer setBarHeight:barHeight];
    [adaptiveServer setup];
    return adaptiveServer.backgroundViewFrame;
}

@end

使用方法例子：

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    self.navigationBarView.frame = [AdaptiveServer getBaseNavigationBarFrameWithNavigationBarHeight:44];
    self.detailBackgroundView.frame = [AdaptiveServer getBaseBackgroundViewFrameWithNavigationBarHeight:44];
    
}

注意，輸入的自定義導航欄的高度是不包括狀態欄的。