How to make button start timer?

[chaseacton]

Hello all, i am making a simple game where i need a button to activate a timer the counts down from 30 seconds, and then when it gets to 0 seconds, load another view. I have searched all day and found only bits and pieces of code that partially work, but nothing solid. Any code or sample projects would be appreciated.

Thanks, Chase

chaseacton@gmail.com

[smithdale87]

I dont think you've looked very hard then. I'll assume you know how to work with interface builder, and you know some very basic programming stuff.

-(IBAction)onButtonPress
{
  theTimer =    [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector( updateTimerDisplay) userInfo:nil repeats:YES];
}

-(void)updateTimerDisplay
{
     //set label text or whatever to current time left
     //decrement current time left

    if( timeLeft <=0 )  // a class var you can setup yourself. Hope you can do this
     {
       [theTimer invalidate]; //this stops the timer
      

      //now you can load the next view
     // ...
     }
}

[chaseacton]

Originally Posted by smithdale87

I dont think you've looked very hard then. I'll assume you know how to work with interface builder, and you know some very basic programming stuff.

-(IBAction)onButtonPress
{
  theTimer =    [NSTimer scheduledTimerWithTimeInterval:1 target:self selector:@selector( updateTimerDisplay) userInfo:nil repeats:YES];
}

-(void)updateTimerDisplay
{
     //set label text or whatever to current time left
     //decrement current time left

    if( timeLeft <=0 )  // a class var you can setup yourself. Hope you can do this
     {
       [theTimer invalidate]; //this stops the timer
      

      //now you can load the next view
     // ...
     }
}

I actually just figured it out before you told me.

My only question now, is how do i load another view when the timer reaches 0?

[smithdale87]

It depends on where you're calling the timer from.

I usually keep different views in different xib files, so when I want to switch views, this is how I do it:

MyNewViewController vc = [[MyNewViewController alloc] initWithNibName:@"MyNewViewController" bundle:nil];
[self.navigationController pushViewController: vc animated:YES];
[vc release];

[chaseacton]

Originally Posted by smithdale87

It depends on where you're calling the timer from.

I usually keep different views in different xib files, so when I want to switch views, this is how I do it:

MyNewViewController vc = [[MyNewViewController alloc] initWithNibName:@"MyNewViewController" bundle:nil];
[self.navigationController pushViewController: vc animated:YES];
[vc release];

Thanks for the quick reply, but that doesnt help. I need to open up another view within the same xib, when the timer reaces 0.


my code looks like this. what and where would i insert the code to do this?

I think it needs to be put around where "[timer invalidate];" is.

#import "MainView.h"

@implementation MainView
@synthesize timer, countLabel;
int count = 1;

-(void)awakeFromNib {
	
	counter.text = @"0";
	
}

- (IBAction)startTimer {
	time = 30.0;
	timer = [NSTimer scheduledTimerWithTimeInterval: 1.0 target: self selector:@selector (countDown) userInfo:nil repeats:YES];
}

-(void)countDown {
	time = time - 1;
	if (time == 0) {
		[timer invalidate];
			}
	[self updateLabel];
}


-(void)updateLabel {
	countLabel.text = [NSString stringWithFormat:@"%i" , time];
}

- (IBAction)addUnit {
	
	if(count >= 999) return;
	
	NSString *numValue = [[NSString alloc] initWithFormat:@"%d", count++];
	counter.text = numValue;
	[numValue release];
}

- (IBAction)subtractUnit {
	
	if(count <= 0) return;
	
	NSString *numValue = [[NSString alloc] initWithFormat:@"%d", count--];
	counter.text = numValue;
	[numValue release];	
}



@end

[smithdale87]

Connect your 2nd view to an IBOutlet.

Then, when timer reaches zero, just do self.view = secondView;

[wearmaize]

Can't you just make an "if" statement?

if label.text == 0 {
// load another view //
}