Question

I have this method:

- (void) receivedData {
}

This should run about every 50 to 100 milliseconds. Is there a way to check the time since the last time it was called and print the last time to an NSString?

Answer 1

@interface MyClass() {
    NSDate* receivedDataTimestamp;
    ....
}

...

-(void)receivedData {
    NSDate* now = [NSDate date];
    if (receivedDataTimestamp != nil) {
        NSTimeInterval delta = [now timeIntervalSinceDate:receivedDataTimestamp];
        NSLog(@"%f seconds since recevedData was called last", delta);
    }
    receivedDataTimestamp = now;
    ....
}