Create UIImage from a UIImageView - ios

Question

I create a UIImageView with two UILabel as subviews of it:
UIImageView *img=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 320, [[UIScreen mainScreen] bounds].size.height)];
img.backgroundColor=self.view.backgroundColor;
UILabel *textOne=[[UILabel alloc]initWithFrame:CGRectMake(10, 10, 290, 250)];
textOne.text=_textOneLabel.text;
textOne.textColor=_textOneLabel.textColor;
UILabel *textTwo = [[UILabel alloc] initWithFrame:CGRectMake(100,180,200,100)];
textTwo.text=_textTwoLabel.text;
textTwo.textColor=_textTwoLabel.textColor;
[img addSubview:textOne];
[img addSubview:textTwo];
UIImageWriteToSavedPhotosAlbum(img.image, nil, nil, nil); //img.image is null
I want to create a UIImage to save it in the camera roll with the UIImageView and the 2 created UILabel. img.image returns null because there is no image assigned to the UIImageView.
Do you have an idea of how achieving that?

Answer 1

Use below method to convert your UIImageView to UIImage.
UIImage *image = [self ChangeImageViewToImage:img];
//Method
-(UIImage *) ChangeImageViewToImage : (UIImageView *) view{
UIGraphicsBeginImageContextWithOptions(view.bounds.size, view.opaque, 0.0);
[view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage * img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return img;
}

Answer 2

This should help you
/* Creates an image with a home-grown graphics context, burns the supplied string into it. */
- (UIImage *)burnTextIntoImage:(NSString *)text :(UIImage *)img {
UIGraphicsBeginImageContext(img.size);
CGRect aRectangle = CGRectMake(0,0, img.size.width, img.size.height);
[img drawInRect:aRectangle];
[[UIColor redColor] set]; // set text color
NSInteger fontSize = 14;
if ( [text length] > 200 ) {
fontSize = 10;
}
UIFont *font = [UIFont boldSystemFontOfSize: fontSize]; // set text font
[ text drawInRect : aRectangle // render the text
withFont : font
lineBreakMode : UILineBreakModeTailTruncation // clip overflow from end of last line
alignment : UITextAlignmentCenter ];
UIImage *theImage=UIGraphicsGetImageFromCurrentImageContext(); // extract the image
UIGraphicsEndImageContext(); // clean up the context.
return theImage;
}