Hiding a line while switching between segmented controls - ios

Question

I am drawing a line in a UIView using drawRect & BezierPath. I also have a segmented controller with contentview1 and contentview2. I want the line to be displayed in content view1 but not contentview2. The code for my line is in a uiview file while the segmented control is in a uiviewcontroller. How can I successfully hide the line between the 2 content views.
InformationView.m (UIView)
- (void)drawRect:(CGRect)rect {
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(10.0, 10.0)];
[path addLineToPoint:CGPointMake(100.0, 100.0)];
path.lineWidth = 3;
[[UIColor blueColor] setStroke];
[path stroke];
}
InformationViewController.m (UIViewController)
segmentedControl = [[UISegmentedControl alloc] initWithItems:itemArray];
segmentedControl.frame = CGRectMake(12, 80, 300, 30);
[segmentedControl addTarget:self action:#selector(segmentAction) forControlEvents: UIControlEventValueChanged];
segmentedControl.selectedSegmentIndex = 0;
[self.view addSubview:contentView2];
[self.view addSubview:contentView ];
-(void) segmentAction {
if (segmentedControl.selectedSegmentIndex == 0) {
[contentView setHidden:NO;
[contentView2 setHidden:YES];
}
if (segmentedControl.selectedSegmentIndex == 1) {
[contentView setHidden:YES];
[contentView2 setHidden: NO];
}
I wan't to add the line to contentview so it will be hidden when another view is selected.

Answer 1

Add a property to InformationView
.h
#interface InformationView : UIView
#property (assign, nonatomic ,getter=isLineHidden) BOOL lineHidden;
#end
.m
#implementation InformationView
- (void)drawRect:(CGRect)rect {
if (self.lineHidden == false) {
UIBezierPath *path = [UIBezierPath bezierPath];
[path moveToPoint:CGPointMake(10.0, 10.0)];
[path addLineToPoint:CGPointMake(100.0, 100.0)];
path.lineWidth = 3;
[[UIColor blueColor] setStroke];
[path stroke];
}
}
-(void)setLineHidden:(BOOL)lineHidden{
if (_lineHidden != lineHidden) {
_lineHidden = lineHidden;
[self setNeedsDisplay];
}
}
#end
Then,when you want to hide line
self.yourView.lineHidden = true;