iOS 切屏方法

点击要切屏时点用此方法获取图片 image 极为切屏图片

- (UIImage *)captureImageFromView:(UIView *)view {

CGRect screenRect = [view bounds];

UIGraphicsBeginImageContext(screenRect.size);

CGContextRef ctx = UIGraphicsGetCurrentContext();

[view.layer renderInContext:ctx];

UIImage *image = UIGraphicsGetImageFromCurrentImageContext();

UIGraphicsEndImageContext();

return image;

}