//返回裁剪區(qū)域圖片

-(UIImage*)clicpViewWithRect:(CGRect)aRect {?//arect 想要截圖的區(qū)域

? ? CGFloat scale = [UIScreen mainScreen].scale;

? ? aRect.origin.x*= scale;

? ? aRect.origin.y*= scale;

? ? aRect.size.width*= scale;

? ? aRect.size.height*= scale;

? ? UIGraphicsBeginImageContextWithOptions(CGSizeMake(self.view.width, self.view.height), YES, scale);

? ? [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];

? ? UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();

? ? UIGraphicsEndImageContext();

? ? CGImageRefimageRef = viewImage.CGImage;

? ? CGImageRef imageRefRect =CGImageCreateWithImageInRect(imageRef, aRect);

? ? UIImage*sendImage = [[UIImagealloc]initWithCGImage:imageRefRect];

? ? returnsendImage;

}