CGContextRef currentContext = UIGraphicsGetCurrentContext();
UIGraphicsBeginImageContext(drawImage.frame.size);
[drawImage.image drawInRect:CGRectMake(0,0, drawImage.frame.size.width, drawImage.frame.size.height)];
CGContextSetRGBStrokeColor(currentContext, 0.0, 0.0, 0.0, 1.0);
UIBezierPath *path=[self pathFromPoint:currentPoint
toPoint:currentPoint];
CGContextBeginPath(currentContext);
CGContextAddPath(currentContext, path.CGPath);
CGContextDrawPath(currentContext, kCGPathFill);
drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
In the above code CGContextRef currentContext
created of UIGraphicsGetCurrentContext()
and pass it to CGContextBeginPath CGContextAddPath CGContextDrawPath
currentContext has parameter to them its not working for me! When i am doing touchMovie
.
When i pass directly UIGraphicsGetCurrentContext()
in place of currentContext
its working for me. I want to know why its like that?
@All Please Advice me for this issue.
The problem is that currentContext
is no longer the current context after you start an image context:
CGContextRef currentContext = UIGraphicsGetCurrentContext();
UIGraphicsBeginImageContext(drawImage.frame.size);
// Now the image context is the new current context.
So you should invert these two lines:
UIGraphicsBeginImageContext(drawImage.frame.size);
CGContextRef currentContext = UIGraphicsGetCurrentContext();
Edit
As Nicolas has noted, you should end the image context when you no longer need it:
drawImage.image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext(); // Add this line.
Edit
Also notice that you are setting a stroke color but drawing with the fill command.
So you should call the appropriate color method instead:
CGContextSetRGBFillColor(currentContext, 0.0, 1.0, 0.0, 1.0);
UIGraphicsBeginImageContext
creates a new context and sets it at the current context.
So you should do
CGContextRef currentContext = UIGraphicsGetCurrentContext();
after UIGraphicsBeginImageContext
. Otherwise, you fetch a context, and this context is immediately superseded by UIGraphicsBeginImageContext
.
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