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Is there a method to allow infinite scrolling of UIimageview when placed inside UIscollview while enabling it with apple pencil to write?

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I am making a dashboard which allows me to write using apple pencil on an iPad. The dashboard contains uiimageview on top of uiscrollview. I want to make this uiscrollview to scroll infinitely when a user scrolls down. My aim is to implement the functionality which is there in every note taking an application, enabled with apple pencil and Ipad.

1. I tried setting up autolayout on uiscrollview and uiimageview but that works if you already have an image array or a defined image and then it scrolls down for all the images. But in my case, I do not have any dummy image to put in the background as it is the dashboard.




2. I tried giving a huge height to the uiimageview but it is not an optimized solution. Also, that resulted in zooming in of strokes on uiimageview once I start writing with apple pencil on it.




3. I tried creating a number of uiimageview(for example 5) and assigned them to "" with uiimageview size to be the size of the screen. So that I can loop over them and draw the apple pencil strokes on it. But then I am not able to identify which uiimageview should I use to draw stroke when writing with apple pencil.

Below are the things I tried for the respective points mentioned above.

1. Setting up autolayout is simple as I followed it from multiple available blogs on the net.


2. I have set up the height of uiimageiview from the storyboard.


3. The last tried method is using the below code.

 func drawStroke(from fromPoint: CGPoint, to toPoint: CGPoint) 
 UIGraphicsBeginImageContext(view.frame.size)
 guard let context = UIGraphicsGetCurrentContext() else 
 return
 
 tempImageView.image?.draw(in: view.bounds)

 context.move(to: fromPoint)
 context.addLine(to: toPoint)

 context.setLineCap(.round)
 context.setBlendMode(.normal)
 context.setLineWidth(CGFloat(1.0))
 context.setStrokeColor(color.cgColor)
 context.strokePath()

 tempImageView.image = UIGraphicsGetImageFromCurrentImageContext()
 tempImageView.alpha = opacity
 UIGraphicsEndImageContext()
 

The above code contains tempImageView and strokes are drawn on it but if I have five uiimageview how I decide which one is clicked and use that uiimageview in place of tempImageView.

ios swift uiscrollview uiimageview apple-pencil

share|improve this question

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge

add a comment | 

0

I am making a dashboard which allows me to write using apple pencil on an iPad. The dashboard contains uiimageview on top of uiscrollview. I want to make this uiscrollview to scroll infinitely when a user scrolls down. My aim is to implement the functionality which is there in every note taking an application, enabled with apple pencil and Ipad.

1. I tried setting up autolayout on uiscrollview and uiimageview but that works if you already have an image array or a defined image and then it scrolls down for all the images. But in my case, I do not have any dummy image to put in the background as it is the dashboard.




2. I tried giving a huge height to the uiimageview but it is not an optimized solution. Also, that resulted in zooming in of strokes on uiimageview once I start writing with apple pencil on it.




3. I tried creating a number of uiimageview(for example 5) and assigned them to "" with uiimageview size to be the size of the screen. So that I can loop over them and draw the apple pencil strokes on it. But then I am not able to identify which uiimageview should I use to draw stroke when writing with apple pencil.

Below are the things I tried for the respective points mentioned above.

1. Setting up autolayout is simple as I followed it from multiple available blogs on the net.


2. I have set up the height of uiimageiview from the storyboard.


3. The last tried method is using the below code.

 func drawStroke(from fromPoint: CGPoint, to toPoint: CGPoint) 
 UIGraphicsBeginImageContext(view.frame.size)
 guard let context = UIGraphicsGetCurrentContext() else 
 return
 
 tempImageView.image?.draw(in: view.bounds)

 context.move(to: fromPoint)
 context.addLine(to: toPoint)

 context.setLineCap(.round)
 context.setBlendMode(.normal)
 context.setLineWidth(CGFloat(1.0))
 context.setStrokeColor(color.cgColor)
 context.strokePath()

 tempImageView.image = UIGraphicsGetImageFromCurrentImageContext()
 tempImageView.alpha = opacity
 UIGraphicsEndImageContext()
 

The above code contains tempImageView and strokes are drawn on it but if I have five uiimageview how I decide which one is clicked and use that uiimageview in place of tempImageView.

ios swift uiscrollview uiimageview apple-pencil

share|improve this question

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge

add a comment | 

I am making a dashboard which allows me to write using apple pencil on an iPad. The dashboard contains uiimageview on top of uiscrollview. I want to make this uiscrollview to scroll infinitely when a user scrolls down. My aim is to implement the functionality which is there in every note taking an application, enabled with apple pencil and Ipad.

1. I tried setting up autolayout on uiscrollview and uiimageview but that works if you already have an image array or a defined image and then it scrolls down for all the images. But in my case, I do not have any dummy image to put in the background as it is the dashboard.




2. I tried giving a huge height to the uiimageview but it is not an optimized solution. Also, that resulted in zooming in of strokes on uiimageview once I start writing with apple pencil on it.




3. I tried creating a number of uiimageview(for example 5) and assigned them to "" with uiimageview size to be the size of the screen. So that I can loop over them and draw the apple pencil strokes on it. But then I am not able to identify which uiimageview should I use to draw stroke when writing with apple pencil.

Below are the things I tried for the respective points mentioned above.

1. Setting up autolayout is simple as I followed it from multiple available blogs on the net.


2. I have set up the height of uiimageiview from the storyboard.


3. The last tried method is using the below code.

 func drawStroke(from fromPoint: CGPoint, to toPoint: CGPoint) 
 UIGraphicsBeginImageContext(view.frame.size)
 guard let context = UIGraphicsGetCurrentContext() else 
 return
 
 tempImageView.image?.draw(in: view.bounds)

 context.move(to: fromPoint)
 context.addLine(to: toPoint)

 context.setLineCap(.round)
 context.setBlendMode(.normal)
 context.setLineWidth(CGFloat(1.0))
 context.setStrokeColor(color.cgColor)
 context.strokePath()

 tempImageView.image = UIGraphicsGetImageFromCurrentImageContext()
 tempImageView.alpha = opacity
 UIGraphicsEndImageContext()
 

The above code contains tempImageView and strokes are drawn on it but if I have five uiimageview how I decide which one is clicked and use that uiimageview in place of tempImageView.

ios swift uiscrollview uiimageview apple-pencil

share|improve this question

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge

 func drawStroke(from fromPoint: CGPoint, to toPoint: CGPoint) 
 UIGraphicsBeginImageContext(view.frame.size)
 guard let context = UIGraphicsGetCurrentContext() else 
 return
 
 tempImageView.image?.draw(in: view.bounds)

 context.move(to: fromPoint)
 context.addLine(to: toPoint)

 context.setLineCap(.round)
 context.setBlendMode(.normal)
 context.setLineWidth(CGFloat(1.0))
 context.setStrokeColor(color.cgColor)
 context.strokePath()

 tempImageView.image = UIGraphicsGetImageFromCurrentImageContext()
 tempImageView.alpha = opacity
 UIGraphicsEndImageContext()
 

share|improve this question

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge

share|improve this question

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge

asked Mar 28 at 4:38

Jio shreyak uppuJio shreyak uppu

111 bronze badge