timer

Objective-C Timer(实用)

 (2011-04-07 10:38:51)

转载

标签：  ipad   iphone   ios   it   objective-c   开发   移动

分类： iPhone

//I am creating a dictionary object that I can pass to my selector method.

NSArray *keys = [NSArray arrayWithObjects:@"key1", @"key2", @"key3", nil];

NSArray *objects = [NSArray arrayWithObjects:@"value1", @"value2", @"value3", nil];

NSDictionary *myDictionary = [NSDictionary dictionaryWithObjects:objects forKeys:keys];

[NSTimer scheduledTimerWithTimeInterval:1.0 target:selfselector:@selector(fireTimer:) userInfo:myDictionary repeats:YES];

//The fireTimer() is the selector method I setup above

- (void) fireTimer:(NSTimer*)theTimer {

for (id key in [theTimer userInfo]) {

NSLog(@"key: %@, value: %@", key, [[theTimer userInfo] objectForKey:key]);

}

//kill the timer

[theTimer invalidate];

theTimer = nil;

}

 

//here is a similar example but with using an NSNumber

NSNumber *myInt = [NSNumber numberWithInt:4];

[NSTimer scheduledTimerWithTimeInterval:1.0 target:selfselector:@selector(fireTimer:) userInfo:myInt repeats:YES];

- (void) fireTimer:(NSTimer*)theTimer {

NSLog(@" %i ", [[theTimer userInfo] integerValue]);

[theTimer invalidate];

theTimer = nil;

}