Desired: Touch UIView, use [view addSubview: ] to display a title in a second Navigat

[mebarron]

This is the behavior of iPhoto.

Using the code below the second NavBar appears but then I get EXC_BAD_ACCESS.
The results are the same if I uncomment the final line of code to removeFromSuperview
I am stuck. Can you please tell me what I am missing?
Many Thanks, Mark

- (void)touchesEndedNSSet *)touches withEventUIEvent *)event {

UITouch *theTouch = [touches anyObject];

/*
If this is a single tap, and the NavBar is visible ,then disappears
*/

if ([theTouch tapCount] == 1) {
NSTimer* aTimer = [NSTimer scheduledTimerWithTimeInterval: 4.0f target:self
selector:@selector(theTimer userInfo:nil repeats: NO];

[self setNavBar: [[UINavigationBar alloc]
initWithFrame:CGRectMake (0, 0, self.frame.size.width, 44)]];
[[self navBar] setTranslucent:YES];
[[self navBar] setBarStyle:UIBarStyleBlack];
[self setNavItem: [[UINavigationItem alloc] initWithTitle:[photo name]]];

[navBar pushNavigationItem:navItem animated:YES];
[self addSubview:navBar];

[navItem release];
[navBar release];
NSLog(@"Hello from touchesEnded:withEvent:");
}
}

- (void) theTimer: (NSTimer *) timer
{
[timer invalidate];
[timer release];
//[navBar removeFromSuperview];
}

///////
(gdb) break malloc_error_break
Breakpoint 18 at 0x9063c072
(gdb) po aTimer
<NSCFTimer: 0x5b6a2c0>
(gdb) continue
2010-04-09 14:11:36.426 iHungryMePlus-iPad[3167:207] Hello from touchesEnded:withEvent:
(gdb) po timer
<NSCFTimer: 0x5b6a2c0>
(gdb) p(int)[timer retainCount]
$1 = 3
(gdb) p(int)[navBar retainCount]
$2 = 2
(gdb) p(int)[navItem retainCount]
$3 = 2
(gdb) continue
Program received signal: “EXC_BAD_ACCESS”.
(gdb)


Debugger shows
"asm objc_msgSend 0x9191fec0"

Thread-1 -<com.apple.main.thread>
#0 0x9191fed7 in objc_msgSend
#1 0xbfffea2c in ??
#2 0x02b4b943 in CFRunLoopRunSpecific
#3 0x02b4b048 in CFRunLoopRunInMode
#4 0x0315589d in GSEventRunModal
#5 0x03155962 in GSEventRun
#6 0x002f3de1 in UIApplicationMain
#7 0x00002698 in main at main.m:13

[smithdale87]

Here's one problem:

- (void)invalidate
This method is the only way to remove a timer from an NSRunLoop object. The NSRunLoop object removes and releases the timer, either just before the invalidate method returns or at some later point.

Therefore, you have no need to call [timer release] yourself.

[mebarron]

Originally Posted by smithdale87

Here's one problem:



Therefore, you have no need to call [timer release] yourself.

It was really great of you to take the time to help me out. Many Thanks!:p