截图UIView的某个CGRect，返回图片

YAScreenShotClass.h

#import <Foundation/Foundation.h>

#import <QuartzCore/QuartzCore.h>

@interface YAScreenShotClass : NSObject

+(UIImage *)screenShotFrom:(UIView *)view frame:(CGRect)frame;

@end

YAScreenShotClass.m

#import "YAScreenShotClass.h"



@implementation YAScreenShotClass

+(UIImage *)screenShotFrom:(UIView *)view frame:(CGRect)frame

{

    if(UIGraphicsBeginImageContextWithOptions != NULL)

    {

        UIGraphicsBeginImageContextWithOptions(frame.size, NO, 0.0);

    } else {

        UIGraphicsBeginImageContext(frame.size);

    }

    

    //获取图像

    [view.layer renderInContext:UIGraphicsGetCurrentContext()];

    UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

    

    return image;

}

@end