github地址: https://github.com/mancongiOS/UIImage.git
UIImage的category
UIView+ImageScreenShot.h
#import <UIKit/UIKit.h> @interface UIView (ImageScreenShot) - (UIImage *)imageScreenShot; @end
UIView+ImageScreenShot.m
#import "UIView+ImageScreenShot.h"
@implementation UIView (ImageScreenShot)
- (UIImage *)imageScreenShot {
UIGraphicsBeginImageContext(self.frame.size);
[self.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return image;
}
@end
使用:
self.view.backgroundColor = [UIColor redColor];
UIImage * image = [self.view imageScreenShot];
if (image) {
self.view.backgroundColor = [UIColor whiteColor];
self.imageView.image = image;
}