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PO-setNeedsDisplay not getting called to refresh drawRect
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copied!<p>I have two methods that get called from within <code>-drawRect:</code></p> <pre><code>- (void)drawRect:(CGRect)rect { if(drawScheduleFlag) { [self drawSchedule]; drawScheduleFlag = false; } else [self drawGrid]; } </code></pre> <p><code>-drawGrid</code> is called at initialization time. The other method (<code>-drawSchedule</code>) is called from this code, which is on the main thread:</p> <pre><code>- (void) calendarTouched: (CFGregorianDate) selectedDate { // NSLog(@"calendarTouched - currentSelectDate: %d/%d/%d", selectedDate.month, selectedDate.day, selectedDate.year); // NSLog(@"Main thread? %d", [NSThread isMainThread]); // get data from d/b for this date (date, staff name, cust name, time, length, services required) //------ stub ------- scheduledDate.year = 2012; scheduledDate.month = 6; scheduledDate.day = 20; staffName = @"Saori"; custName = @"Brian"; startTime.hour = 11; duration = 2; servicesReqd = @"Nails"; drawScheduleFlag = true; [self setNeedsDisplay]; return; } </code></pre> <p>I know the code is being executed, but nothing happens to draw the schedule. Why is <code>-[self setNeedsDisplay]</code> not causing the <code>-drawRect</code> to be called?</p> <p>UPDATE: I have put breaks in so I'm positive it's not being called. The original grid is drawn once; when the user taps a calendar date, -calendarTouched is called and completely executed. The drawScheduleFlag is set to true, and -[self setNeedsDisplay] gets called, but -drawRect does not. It appears that the UIView is not being invalidated (which -setNeedsDisplay is supposed to do), therefore -drawRect is not called.</p> <p>UPDATE #2: I have a .xib for a UIViewController with two (2) UIViews in it. The first UIView takes about 1/3 of an iPad screen, the second UIView takes the bottom 2/3 of the screen. Each UIView has it's own specific class; the top UIView displays a calendar and is working correctly, capturing touches and changing the date selected.</p> <p>The bottom UIView is supposed to show the schedule for the date picked in the top UIView. This is where the problem is. Since the top UIView is working, I will put up the code for the bottom UIView's class. It basically draws the schedule grid when -drawRect is first called. Once the user has selected a day, it is supposed to invalidate the UIView to draw the actual schedule on the grid.</p> <p>Here is the code for Schedule.h: <a href="http://pastebin.com/NQpj0i07" rel="nofollow">http://pastebin.com/NQpj0i07</a> Here is the code for Schedule.m: <a href="http://pastebin.com/YBbE8y0T" rel="nofollow">http://pastebin.com/YBbE8y0T</a> Here is the code for the controller: <a href="http://pastebin.com/nDqBCivj" rel="nofollow">http://pastebin.com/nDqBCivj</a> Note that both pastebin's expire in 24 hours from Jun 28, 5:38 PM PST</p>

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