Change NSTimer interval for repeating timer.
- by user300713
Hi,
I am running a mainLoop in Cocoa using an NSTimer set up like this:
mainLoopTimer = [NSTimer scheduledTimerWithTimeInterval:1.0/fps target:self selector:@selector(mainloop) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:mainLoopTimer forMode:NSEventTrackingRunLoopMode];
At Program startup I set the timeInterval to 0.0 so that the mainloop runs as fast as possible. Anyways, I would like to provide a function to set the framerate(and thus the time interval of the timer) to a specific value at runtime. Unfortunately as far as I know that means that I have to reinitialize the timer since Cocoa does not provide a function like "setTimerInterval"
This is what I tried:
- (void)setFrameRate:(float)aFps
{
NSLog(@"setFrameRate");
[mainLoopTimer invalidate];
mainLoopTimer = nil;
mainLoopTimer = [NSTimer scheduledTimerWithTimeInterval:1.0/aFps target:self selector:@selector(mainloop) userInfo:nil repeats:YES];
[[NSRunLoop currentRunLoop] addTimer:mainLoopTimer forMode:NSEventTrackingRunLoopMode];
}
but this throws the following error and stops the mainloop:
2010-06-09 11:14:15.868 myTarget[7313:a0f] setFrameRate
2010-06-09 11:14:15.868 myTarget[7313:a0f] * __NSAutoreleaseNoPool(): Object 0x40cd80 of class __NSCFDate autoreleased with no pool in place - just leaking
2010-06-09 11:14:15.869 myTarget[7313:a0f] * __NSAutoreleaseNoPool(): Object 0x40e700 of class NSCFTimer autoreleased with no pool in place - just leaking
0.614628
I also tried to recreate the timer using the "retain" keyword, but that didn't change anything.
Any ideas about how to dynamically change the interval of an NSTimer at runtime?
Thanks!
