Question

I am trying to make application to draw on live camera. In that I have created a class with xib called PaintView, in which all the paint related functionality is running.

I am adding the paintview to cameraoverlay view. The view is added properly. But when I am touching the screen of device, the application is not able to draw anything, and the log shows following error

< Error >: CGContextSetLineWidth: invalid context 0x11b540

< Error >: CGContextSetRGBStrokeColor: invalid context 0x11b540

my code for adding sub view is

// Insert the overlay
       
overlay = [[PaintView alloc] initWithNibName:@"PaintView" bundle:nil];

//overlay.pickerReference = self.imagePicker;

[self.imagePicker.cameraOverlayView addSubview:overlay.view];

[self.imagePicker.cameraOverlayView bringSubviewToFront:overlay.view];

[self.imagePicker.cameraOverlayView setBackgroundColor:[UIColor clearColor]];

//self.imagePicker.delegate = overlay;
        
[self presentModalViewController:self.imagePicker animated:YES];

Please help me, how to draw on live camera !!!

Thanks in advance.

EDIT: In Paint view I am creating Image view, which is initialized like

drawImage = [[UIImageView alloc] init];

drawImage.frame = CGRectMake(20, 20, 320, 440);

[self.view addSubview:drawImage];

[self.view bringSubviewToFront:drawImage];

Answer 1

Hi I have got the solution ,

I was making mistake, as the Context is not necessary to use, it will create issues.

We need to use UIBezierPath, and the issues are solved. I am able to draw on live camera.

here the reference to the link.

Yea…..