Chapter 1

[email protected] · February 27th, 2011, 07:50 PM

Hi, small query. I have the simple toolbar working in Simulator, but when it rotates it does not seem to rotate at 45 degress, 180 degress, etc

Same result with your code from download.

I have tried using 90 deg, etc but it does not perform as expected.

Looking in the reference docs, should it use Radians?

I am using SDK 4.2. Thank you for any help.

Mike

gbacklin · February 27th, 2011, 08:59 PM

You are correct !

replace the current method with this.

Code:

#pragma mark -
#pragma mark Action methods

- (IBAction)rotateView:(id)sender {
	static CGFloat angle = 0.0;
	
	switch ([sender tag]) {
		case 0:
			angle += (45.0 * M_PI/180);
			break;
		case 1:
			angle += (180.0 * M_PI/180);
			break;
		case 2:
			angle -= (180.0 * M_PI/180);
			break;
		case 3:
			angle -= (45.0 * M_PI/180);
			break;
		default:
			break;
	}
	
	CGAffineTransform transform=CGAffineTransformMakeRotation(angle);
	[imageView setTransform:transform];
}

Thank you for your post !!!

[email protected] · February 28th, 2011, 04:57 AM

Gene, thanks and so far I like the content, format and learning style of the book ... onwards ... Mike

gbacklin · February 28th, 2011, 10:05 AM

Quote:

Originally Posted by [email protected]

Gene, thanks and so far I like the content, format and learning style of the book ... onwards ... Mike

Thank you for your kind words and support, it is appreciated. I am glad that I am able to help you.