UIButton+LhGray.m
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//
// UIButton+LhGray.m
// SmartCity
//
// Created by luoh on 2021/3/26.
// Copyright © 2021 StarHome. All rights reserved.
//
#import "UIButton+LhGray.h"
#import <objc/runtime.h>
@implementation UIButton (LhGray)
+(void)lh_buttonSwizzldMethedWith:(BOOL)changeGray{
if (changeGray == false) {
return;
}
Class class = [self class];
SEL originalSelector = @selector(setBackgroundColor:);
SEL swizzledSelector = @selector(lh_setButtonBackgroundColor:);
Method originalMethod = class_getInstanceMethod(class, originalSelector);
Method swizzledMethod = class_getInstanceMethod(class, swizzledSelector);
BOOL didAddMethod = class_addMethod(class, originalSelector, method_getImplementation(swizzledMethod), method_getTypeEncoding(swizzledMethod));
if (didAddMethod) {
class_replaceMethod(class, swizzledSelector, method_getImplementation(originalMethod), method_getTypeEncoding(originalMethod));
} else {
method_exchangeImplementations(originalMethod, swizzledMethod);
}
}
- (void)lh_setButtonBackgroundColor:(UIColor *)color {
UIColor * newColor = [self changeGrayWithColor:[UIColor redColor] Red:1.0 green:0.0 blue:0.0 alpha:1.0];
[self lh_setButtonBackgroundColor:newColor];
}
- (UIColor *)changeGrayWithColor:(UIColor *)color Red:(CGFloat)r green:(CGFloat)g blue:(CGFloat)b alpha:(CGFloat)a {
CGFloat gray = r * 0.299 +g * 0.587 + b * 0.114;
UIColor *grayColor = [UIColor colorWithWhite:gray alpha:a];
return grayColor;
}
@end