Memory Management with NSStatusItem : setToolTip - objective-c

Question

I have a Singleton class with static NSStatusItem and a NSStream client. Whenever I receive a message in Stream I pass it to another thread to change NSStatusItem toolTip.
case NSStreamEventHasBytesAvailable:
{
if(stream == inputStream)
{
//InputStream ready
uint8_t buf[1024];
unsigned int len = 0;
len = [inputStream read:buf maxLength:1024];
if(len > 0)
{
NSMutableData* data=[[NSMutableData alloc] initWithLength:0];
[data appendBytes: (const void *)buf length:len];
NSString *msgRcvd = [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding];
NSLog(#"Message Recieved in StreamUtil ::: %#",msgRcvd);
[self ProcessMessage:msgRcvd];
[data release];
[msgRcvd release];
}
}
break;
}
#implementation SBNSStatusItem
static SBNSStatusItem *sbNSStatusItem = NULL;
+(SBNSStatusItem *) GetSBNSStatusItem
{
#synchronized(self)
{
if (sbNSStatusItem== NULL)
{
sbNSStatusItem= [[self alloc] init];
}
}
return(sbNSStatusItem);
}
-(void) CreateNSStatusItem
{
// Initalization of NSStatusItem with NSMenu and Image setting
}
-(void) SetToolTip:(NSString *) toolTip
{
NSLog(#"%#",toolTip); // Shows Correct Message
[statusItem setToolTip:toolTip]; // But the ToolTip has some junk at the end of ori msg
//[toolTip release]; // EXC_BAD_ACCESS
}
#end
Now the Threadfrom StreanUtil calls the setToolTip with the message to be set. But after 2 or 3 calls, the tooltip starts showing some junk text at the end of the original tool tip message.
What am I doing wrong here?

Answer 1

Since the toolTip item you pass into SetToolTip: is just a pointer its probably getting set or released somewhere else.
try something like this
- (void)SetToolTip:(NSString *) toolTip
{
NSString *toolTipCopy = [toolTip copy];
[statusItem setToolTip:toolTipCopy];
[toolTipCopy release];
}
Also if your targeting iOS 4 or OS X 10.6 or later I would consider moving to ARC.
Then the code would then become this.
- (void)SetToolTip:(NSString *) toolTip
{
[statusItem setToolTip:[toolTip copy]];
}