Slide to Unlock .... Feel :-)

For this look and feel you need in .h file :-

Nothing.png

 

slideButton.png

 

Container.png

 

#import <UIKit/UIKit.h>

@interface SlideToUnlockViewController : UIViewController {
   
    IBOutlet UISlider *slideToUnlock;
    IBOutlet UIButton *lockButton;
    IBOutlet UILabel *myLabel;
    IBOutlet UIImageView *Container;

}

@property (nonatomic, retain) UISlider *slideToUnlock;
@property (nonatomic, retain) UIButton *lockButton;
@property (nonatomic, retain) UILabel *myLabel;
@property (nonatomic, retain) UIImageView *Container;

-(IBAction)UnLockIt;
-(IBAction)LockIt;
-(IBAction)fadeLabel;

@end


and in .m file :- 

@synthesize slideToUnlock, myLabel, lockButton, Container;

BOOL UNLOCKED = NO;


- (void)viewDidLoad {

    [super viewDidLoad];

    // initialize custom UISlider (you have to do this in viewdidload or applicationdidfinishlaunching.
  
UIImage *stetchLeftTrack= [[UIImage imageNamed:@"Nothing.png"]
                      stretchableImageWithLeftCapWidth:30.0 topCapHeight:0.0];
  
UIImage *stetchRightTrack= [[UIImage imageNamed:@"Nothing.png"]
                       stretchableImageWithLeftCapWidth:30.0 topCapHeight:0.0];
   
[slideToUnlock setThumbImage: [UIImage imageNamed:@"SlideToStop.png"] forState:UIControlStateNormal];
 
  [slideToUnlock setMinimumTrackImage:stetchLeftTrack forState:UIControlStateNormal];
 
  [slideToUnlock setMaximumTrackImage:stetchRightTrack forState:UIControlStateNormal];
   
}


-(IBAction)LockIt {
   
    slideToUnlock.hidden = NO;
  
    lockButton.hidden = YES;
  
    Container.hidden = NO;
  
    myLabel.hidden = NO;
   
   myLabel.alpha = 1.0;
   
   UNLOCKED = NO;
   
   slideToUnlock.value = 0.0;
  
    NSString *str = @"The iPhone is Locked!";
  
   UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Locked" message:str delegate:self cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
 
    [alert show];
  
   [alert release];
}

       -(IBAction)fadeLabel {

    myLabel.alpha = 1.0 - slideToUnlock.value;
   
   }

       -(IBAction)UnLockIt {

   
         if (!UNLOCKED) {
       
       
   
        if (slideToUnlock.value ==1.0) {  // if user slide far enough, stop the operation   
          
  // Put here what happens when it is unlocked
           
            slideToUnlock.hidden = YES;
          
           lockButton.hidden = NO;
         
          Container.hidden = YES;
       
            myLabel.hidden = YES;
          
         UNLOCKED = YES;
      
      }
      else
            {
            // user did not slide far enough, so return back to 0 position
         
             [UIView beginAnimations: @"SlideCanceled" context: nil];
          
             [UIView setAnimationDelegate: self];
       
            [UIView setAnimationDuration: 0.35];
           
              // use CurveEaseOut to create "spring" effect
         
            [UIView setAnimationCurve: UIViewAnimationCurveEaseOut];   
       
            slideToUnlock.value = 0.0;
           
            [UIView commitAnimations];
           
           
            }
       
      }
   
  }