iOS开发实现UIImageView的分类

本文实例为大家分享了iOS实现UIImageView的分类代码，供大家参考，具体内容如下

一.Objective-C版

.h文件

#import 
#import 
#import 
 

@interface UIImageView (WLKit)
 

+ (instancetype _Nonnull)imageViewWithImage:(UIImage *_Nonnull)image
     frame:(CGRect)rect;
 

+ (instancetype _Nonnull)imageViewWithImage:(UIImage *_Nonnull)image
      size:(CGSize)size
     center:(CGPoint)center;
 

+ (instancetype _Nonnull)imageViewWithImage:(UIImage *_Nonnull)image
     center:(CGPoint)center;
 

+ (instancetype _Nonnull)imageViewWithImageAsTemplate:(UIImage *_Nonnull)image
 tintColor:(UIColor *_Nonnull)tintColor;
 

- (void)setImageShadowColor:(UIColor *_Nonnull)color
    radius:(CGFloat)radius
    offset:(CGSize)offset
   opacity:(CGFloat)opacity;
 

- (void)setMaskImage:(UIImage *_Nonnull)image;
 
@end

.m文件

#import "UIImageView+WLKit.h"
 
@implementation UIImageView (WLKit)
 
+ (instancetype _Nonnull)imageViewWithImage:(UIImage *_Nonnull)image frame:(CGRect)rect
{
  UIImageView *_image = [[UIImageView alloc] init];
  [_image setframe:rect];
  [_image setImage:image];
  return _image;
}
 
+ (instancetype _Nonnull)imageViewWithImage:(UIImage *_Nonnull)image size:(CGSize)size center:(CGPoint)center
{
  UIImageView *_image = [[UIImageView alloc] init];
  [_image setframe:CGRectMake(0, 0, size.width, size.height)];
  [_image setImage:image];
  [_image setCenter:center];
  return _image;
}
 
+ (instancetype _Nonnull)imageViewWithImage:(UIImage *_Nonnull)image center:(CGPoint)center
{
  UIImageView *_image = [[UIImageView alloc] init];
  [_image setframe:CGRectMake(0, 0, image.size.width, image.size.height)];
  [_image setImage:image];
  [_image setCenter:center];
  return _image;
}
 
+ (instancetype _Nonnull)imageViewWithImageAsTemplate:(UIImage *_Nonnull)image tintColor:(UIColor *_Nonnull)tintColor
{
  UIImageView *_image = [[UIImageView alloc] init];
  image = [image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
  [_image setImage:image];
  [_image setTintColor:tintColor];
  return _image;
}
 
- (void)setImageShadowColor:(UIColor *_Nonnull)color radius:(CGFloat)radius offset:(CGSize)offset opacity:(CGFloat)opacity
{
  self.layer.shadowColor = color.CGColor;
  self.layer.shadowRadius = radius;
  self.layer.shadowOffset = offset;
  self.layer.shadowOpacity = opacity;
  self.clipsToBounds = NO;
}
 
- (void)setMaskImage:(UIImage *_Nonnull)image
{
  CALayer *mask = [CALayer layer];
  mask.contents = (id)[image CGImage];
  mask.frame = CGRectMake(0, 0, self.frame.size.width, self.frame.size.height);
  self.layer.mask = mask;
  self.layer.masksToBounds = YES;
}
 
- (void)setAlpha:(CGFloat)alpha
{
  if ([self.superview isKindOfClass:[UITableView class]]) {
    if (self.superview.tag == 836913) {
      if (alpha == 0 && self.autoresizingMask == UIViewAutoresizingFlexibleLeftMargin) {
 if (self.frame.size.width < 10 && self.frame.size.height > self.frame.size.width) {
   UIScrollView *sc = (UIScrollView*)self.superview;
   if (sc.frame.size.height < sc.contentSize.height) {
     [super setAlpha:0.5];
     return;
   }
 }
      }
    }
    
    if (self.superview.tag == 836914) {
      if (alpha == 0 && self.autoresizingMask == UIViewAutoresizingFlexibleTopMargin) {
 if (self.frame.size.height < 10 && self.frame.size.height < self.frame.size.width) {
   UIScrollView *sc = (UIScrollView*)self.superview;
   if (sc.frame.size.width < sc.contentSize.width) {
     return;
   }
 }
      }
    }
  }
  
  [super setAlpha:alpha];
}
@end

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持考高分网。