linking a NSTimer to a NSProgressIndicator - cocoa

Question

I need to make an NSTimer that will tell another class to fire in 10 seconds, and I would also like to use it to animate a determinate NSProgressIndicator. I also need to know how to change my indeterminate progress indicator to determinate. I was able to find a Apple doc on this, however a more in-depth explanation would help.

Answer 1

From indeterminate to determinate NSProgressIndicator You can change in IB. Select Your progressIndicator and go to Attributes inspector and uncheck Indeterminate checkbox like this:
Or it can be done programatically:
[progressIndicatorOutlet setIndeterminate:NO];
Note: progressIndicatorOutlet is Your NSProgressIndicator outlet, so don't forget to IBOutlet it.
Determinate NSProgressIndicator animation:
It's very simple just set and change value like this:
[progressIndicatorOutlet setDoubleValue:10];
Note: progressIndicatorOutlet is Your NSProgressIndicator outlet, so don't forget to IBOutlet it.
NSTimer:
Simple timer example:
//Place this where You want to call class after 10 sec. (for example: when button pressed)
//It will call class with name callAfter10sec after 10 sec. Place in there what You need to do.
[NSTimer scheduledTimerWithTimeInterval:10.0
target:self
selector:#selector(callAfter10sec:)
userInfo:nil
repeats:YES];
Don't forget to add class which I mentioned in comments like this:
-(void)callAfter10sec:(NSTimer *)time {
// Do what You want here
}

Answer 2

Hope it helps.
Using the following way we can achieve what is expected
NSInteger progressValue;
NSTimer *timerObject;
progressValue = progressMaxValue;
timerObject = [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:#selector(incrementProgressBar) userInfo:nil repeats:YES];
[timerObject fire];
[self.progressBar setMinValue:progressMinValue];
[self.progressBar setMaxValue:progressMaxValue];
[self.progressBar setDoubleValue:progressValue];
- (void)incrementProgressBar {
// Increment the progress bar value by 1
[self.progressBar incrementBy:1.0];
progressValue--;
[self.progressBar setDoubleValue:progressValue];
}