iOS UIView 分类 UIViewController

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.h

#import <UIKit/UIKit.h>

@interface UIView (Extension)

/**
 控件左上角 x 坐标
 */
@property (nonatomic, assign) CGFloat x;

/**
 控件左上角 y 坐标
 */
@property (nonatomic, assign) CGFloat y;

/**
 控件的中心点 x 坐标
 */
@property (nonatomic, assign) CGFloat centerX;

/**
 控件的中心点 y 坐标
 */
@property (nonatomic, assign) CGFloat centerY;

/**
 控件的宽度
 */
@property (nonatomic, assign) CGFloat width;

/**
 控件高度
 */
@property (nonatomic, assign) CGFloat height;

/**
 控件size
 */
@property (nonatomic, assign) CGSize size;


/**
 * 判断一个控件是否真正显示在主窗口
 */
- (BOOL)isShowingOnKeyWindow;

/**
 加载xib 创建的 View
 */
+ (instancetype)viewFromXib;

.m

#import "UIView+Extension.h"

@implementation UIView (Extension)

- (void)setX:(CGFloat)x
{
    CGRect frame = self.frame;
    frame.origin.x = x;
    self.frame = frame;
}

- (CGFloat)x
{
    return self.frame.origin.x;
}

- (void)setCenterX:(CGFloat)centerX
{
    CGPoint center = self.center;
    center.x = centerX;
    self.center = center;
}

- (CGFloat)centerX
{
    return self.center.x;
}

- (void)setCenterY:(CGFloat)centerY
{
    CGPoint center = self.center;
    center.y = centerY;
    self.center = center;
}

- (CGFloat)centerY
{
    return self.center.y;
}


- (void)setY:(CGFloat)y
{
    CGRect frame = self.frame;
    frame.origin.y = y;
    self.frame = frame;
}



- (CGFloat)y
{
    return self.frame.origin.y;
}

- (void)setWidth:(CGFloat)width
{
    CGRect frame = self.frame;
    frame.size.width = width;
    self.frame = frame;
}

- (CGFloat)width
{
    return self.frame.size.width;
}

- (void)setHeight:(CGFloat)height
{
    CGRect frame = self.frame;
    frame.size.height = height;
    self.frame = frame;
}

- (CGFloat)height
{
    return self.frame.size.height;
}

- (void)setSize:(CGSize)size
{

    CGRect frame = self.frame;
    frame.size = size;
    self.frame = frame;
}

- (CGSize)size
{
    return self.frame.size;
}



/*
 * 当前这个View是否和keyWindow有重叠
 */
- (BOOL)isShowingOnKeyWindow
{

    UIWindow *keyWindow = [UIApplication sharedApplication].keyWindow;
    
    CGRect newFrame = [keyWindow convertRect:self.frame fromView:self.superview];
    CGRect winBounds = keyWindow.bounds;
    
    BOOL intersects = CGRectIntersectsRect(newFrame, winBounds);
    
    return !self.isHidden && self.alpha > 0.01 && self.window == keyWindow && intersects;
}


+ (instancetype)viewFromXib
{
    NSString *className = NSStringFromClass([self class]);
    id object = [[[NSBundle mainBundle]loadNibNamed:className owner:nil options:nil]lastObject];
    if ([object isKindOfClass:[self class]]) {
        return object;
    }
    return  nil;
}

UIViewController 分类
.h 文件

#import <UIKit/UIKit.h>

@interface UIViewController (Extension)

/**
 从xib中加载控制器
 
 */
+ (instancetype)viewControllerFromNib;

/**
 从 storyboard 加载ViewController

 @param storyboardName storyboard  名字
 @param identifier 这个类的 storyboard ID（自己设置）

 */
+ (instancetype)viewControllerFromStoryboardName:(NSString *)storyboardName Identifier:(NSString *)identifier;

@end

.m 文件

#import "UIViewController+Extension.h"

@implementation UIViewController (Extension)

+ (instancetype)viewControllerFromNib {
    UIViewController *viewController = [[self alloc] initWithNibName:NSStringFromClass([self class]) bundle:nil];
    return viewController;
}

+ (instancetype)viewControllerFromStoryboardName:(NSString *)storyboardName Identifier:(NSString *)identifier{
    
    return [[UIStoryboard storyboardWithName:storyboardName bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:identifier];
    
}

@end

干货代码 我的一个纯代码的基础框架有各种常用的分类封装入手即用