iOS 截屏/将图片存储到相册或沙盒目录下

//切图

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

    CGRect rect = view.frame;

    UIGraphicsBeginImageContext(rect.size);

    CGContextRef context = UIGraphicsGetCurrentContext();

    [view.layer renderInContext:context];

    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();

    UIGraphicsEndImageContext();

   return img;

}

//切图并保存到相册中

-(void)savaImageToPhotosAlbumWithImage:(UIImage *)viewImage{

    CGImageRef imageRef = viewImage.CGImage;

    CGRect rect = CGRectMake(166, 211, 426, 320);//这里可以设置想要截图的区域

    //CGRect rect = CGRectMake(0, 0, iPadWidth, iPadHeight);//这里可以设置想要截图的区域

    CGImageRef imageRefRect =CGImageCreateWithImageInRect(imageRef, rect);

    

    UIImage *sendImage = [[UIImage alloc] initWithCGImage:imageRefRect];

    UIImageWriteToSavedPhotosAlbum(sendImage, nil, nil, nil);//保存图片到照片库

//    NSData *imageViewData = UIImagePNGRepresentation(sendImage);

    CGImageRelease(imageRefRect);

}

//将图片保存到沙盒目录下

-(void)savaImageToDomainMaskWithIamge:(UIImage *)image{

    NSData *imageData = UIImagePNGRepresentation(image);

    /*

     *设置图片存储位置

     */

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentationDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0];

    NSString *pictureName = @"picture.png";

    NSString *savedImagePath = [documentsDirectory stringByAppendingPathComponent:pictureName];

    [imageData writeToFile:savedImagePath atomically:YES];//保存照片到沙盒目录

}