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NSLog with CGPoint data



I have a CGPoint called point that is being assigned a touch:







UITouch *touch = [touches anyObject];



CGPoint point = [touch locationInView:self];







I want to get the x coordinate value into my console log:







NSLog(@"x: %s", point.x);







When I use this, log output for this is:





x: (null)





I have verified that point is not null when this is called using the debugger and variable watch.





Any help appreciated,





Thanks // :)


Comments

  1. Actually, the real easiest way to log a CGPoint is:

    NSLog(@"%@", NSStringFromCGPoint(point));


    The desktop Cocoa equivalent is NSStringFromPoint().

    ReplyDelete
  2. point.x is a floating point number, so you should use:

    NSLog(@"x: %f", point.x);

    ReplyDelete
  3. The simplest way to log a CGPoint value is to use the NSValue class, since it will give you all the relevant values formatted nicely for the console. It's done like so:

    NSLog(@"myPoint = %@", [NSValue valueWithCGPoint:myPoint]);


    You can also use the +valueWithCGRect and +valueWithCGSize methods of NSValue when you're trying to log, say, the frame (CGRect) or size (CGSize) properties of a UIView.

    ReplyDelete
  4. point.x is a floating point number, so you should use:

    NSLog(@"%@",[NSString StringWithFormat:@"%f",point.x]);

    ReplyDelete
  5. NSLog(@"point x,y: %f,%f", point.x, point.y);

    ReplyDelete

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