//
//  YYAnimatedImageView+ImageShow.m
//  YUMI
//
//  Created by YUMI on 2021/12/16.
//

#import "YYAnimatedImageView+ImageShow.h"
#import <objc/runtime.h>

@implementation YYAnimatedImageView (ImageShow)
+ (void)load{
	// 获取系统的方法
	Method displayLayerMethod = class_getInstanceMethod(self, @selector(displayLayer:));
	// 获取更新的方法
	Method displayLayerNewMethod = class_getInstanceMethod(self, @selector(displayLayerNew:));
	// 方法交换
	method_exchangeImplementations(displayLayerMethod, displayLayerNewMethod);

}


- (void)displayLayerNew:(CALayer *)layer{
	Ivar imageIvar = class_getInstanceVariable([self class], "_curFrame");
	UIImage *image = object_getIvar(self, imageIvar);
	if (image){
		layer.contents = (__bridge id)image.CGImage;
	}else{
		if (@available(iOS 14.0, *)){
			[super displayLayer:layer];
		}
	}
}
@end