Memory Issue

casahome2000 · September 2009

I'm working on an app and the code complies just fine but during runtime the app crashes with the following problem...

GDB: Program received signal: "SIGABRT"
AND SOMETIMES THIS ONE (with no change in code)
EXC_BAD_ACCESS

In the Debugger you can see what memory location that is coming from and where it's coming from.


[timer invalidate];

I've tried different things i've found online but can't seem to get this solved.

Here's the code snipit from where i think the problem is. Let me know if there is something really odd about what i'm doing or if there is a error...or a better way. Any help would be great...it's just frustrating at this point!

//METHOD TO DETECT MOVEMENT IN iPHONE
- (void)accelerometer:(UIAccelerometer *)acel didAccelerate:(UIAcceleration *)aceler {
	
	if (fabsf(aceler.x) > 2 || fabsf(aceler.y) > 2 || fabsf(aceler.z) > 2) 
	{
		//TEST STATEMENT
		[label setText:@\"You shook me!\"];
		//SET PROGRESS BAR TO 0
		progressView.progress = 0.0; 
		//INITIALIZE TIMER - SELECTOR TO MOVE PROGRESS
		timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(moveProgress) userInfo:nil repeats: YES];
			
	
	}
}
-(void)moveProgress
{
		progressView.progress = progressView.progress + 0.1;

	
	if (progressView.progress == 0.5)
		{
			[progressLabel setText:@\"That's a tough one...\"];
		}
			if (progressView.progress == 1.0)
				{
					
					//END TIMER
					
					[timer invalidate]; //PROBLEM????
					
		
				//CREAT ARRAY FROM PLIST (IDENTICAL TO FLIPSIDE LOAD)
					NSString *filePath = [[NSBundle mainBundle] pathForResource:@\"answers\" ofType:@\"plist\"];
					//NSLog(filePath);
					NSArray *array = [[NSArray alloc]initWithContentsOfFile:filePath];
					self.answerList1 = array;
					[array release];
					
				//	NSLog(answerList);
				//STORE TOTAL ANSWER LIST COUNT
					int numAnswers = [answerList1 count];
				//RANDOM SELECT AN ARRAY INDEX
					int randSelected = arc4random() % numAnswers;
				//STORE THAT SELECTION AS A STRING (RANDOM PLIST ITEM)
					NSString *selection = [answerList1 objectAtIndex:randSelected];
	
				//OUTPUT THAT RANDOM SELECTION
					[label setText:selection];
					image1.hidden = NO;
					progressView.hidden = YES;
					[progressLabel setText:@\"\"];
					
					NSString *soundPath = [[NSBundle mainBundle] pathForResource:@\"fortuneSound\" ofType:@\"wav\"];
					SystemSoundID soundID;
					AudioServicesCreateSystemSoundID((CFURLRef)[NSURL fileURLWithPath:soundPath], &soundID);
					AudioServicesPlaySystemSound (soundID);
					
				}
		}

pjlocko · September 2009

Try:

NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:blah blah blah....];

See if thats is any better.

david_david · September 2009

you can't invalidate from its own selector method... right ?

datapata · September 2009

I think you need to retain the timer after creating it:

NSTimer *timer = [[NSTimer scheduledTimer...] retain];

casahome2000 · September 2009

A little bit more info on this.

In the .h file i have the following in the right place...


NSTimer *timer;
@property (nonatomic,retain) NSTimer *timer;

In the .m file i have the following in the right place...


@synthesize timer;

- (void)accelerometer:
timer = [NSTimer scheduledTimerWithTimeInterval:1.0 target:self selector:@selector(moveProgress) userInfo:nil repeats:YES];

- (void)moveProgress:
[timer invalidate];

I've changed around the code a bit for some of the suggestions but they did not provide any sunshine. I've got it back to what it is posted in my posts now...non functioning! LOL.

Thanks again for helping with this...can't wait to get his resolved.

david_david · September 2009

hi

Always use self.timer = [NSTimer sch....]; if you set the property

hxba · April 2010

david_david;121316 said:
hi

Always use self.timer = [NSTimer sch....]; if you set the property

your answer helps me solve a problem , thanks!

Howdy, Stranger!

Forums

Memory Issue

Replies