UIPanGestureRecognizer to create Screen similar to Notification Center


In my application i wanted a Screen similar to the Notification Center of the iPhone.

Where user can navigate through 3 screens using swipe gesture and also by selecting the UISegmentedControl index.

So i have figured out below code.

 

-(void)viewDidLoad {

[super viewDidLoad];

 

// I have added a ScrollView on Xib file of width 960px here.

// added content(UIControls) required on first screen at 0px to 320px.

// added content(UIControls) required on second screen at 320px to 640px.

// added content(UIControls) required on third screen at 640px to 960px.

 

// I have added a UISegmentedControl on Xib file and set an action: - (IBAction)changeTab:(id)sender

 

// Add PangestureRecognizer to view

   UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(swipeThroughTabs:)];

   [panRecognizer setMinimumNumberOfTouches:1];

   [panRecognizer setMaximumNumberOfTouches:1];

   [panRecognizer setDelegate:self];

   [self.view addGestureRecognizer:panRecognizer];

}

 

 

-(void)swipeThroughTabs:(id)sender {

   [[[(UITapGestureRecognizer*)sender view] layer] removeAllAnimations];

   

   CGPoint velocity = [(UIPanGestureRecognizer*)sender velocityInView:[sender view]];

   

   if ([(UIPanGestureRecognizer*)sender state] == UIGestureRecognizerStateEnded) {

 

       if (velocity.x < 0) {

           if (segmentedControlForTab.selectedSegmentIndex == 0) {

               [self changeTabManually:1];

           } else if (segmentedControlForTab.selectedSegmentIndex == 1) {

               [self changeTabManually:2];

           }

       } else {

           if (segmentedControlForTab.selectedSegmentIndex == 2) {

               [self changeTabManually:1];

           } else if (segmentedControlForTab.selectedSegmentIndex == 1) {

               [self changeTabManually:0];

           }

       }

       

   }

}

 

-(void)changeTabManually:(NSInteger )selectedIndex {

   [self hideKeyboard];

   [UIView animateWithDuration:0.5

                         delay:0.0

                       options:UIViewAnimationOptionCurveEaseIn

                    animations:^ {

                        [segmentedControlForTab setSelectedSegmentIndex:selectedIndex];

                        CGRect frameOfScrollView = scrollViewSettingPage.frame;

                        switch (selectedIndex) {

                            case 0: {

                                frameOfScrollView.origin.x = 0;

                                scrollViewSettingPage.frame = frameOfScrollView;

                            }

                                break;

                               

                            case 1: {

                                frameOfScrollView.origin.x = -320;

                                scrollViewSettingPage.frame = frameOfScrollView;

                            }

                                break;

                               

                            case 2: {

                                frameOfScrollView.origin.x = -640;

                                scrollViewSettingPage.frame = frameOfScrollView;

                            }

                                break;

                               

                            default:

                                break;

                        }

                    }

                    completion:^(BOOL finished) {

                    }];

}

 

- (IBAction)changeTab:(id)sender {

   [self hideKeyboard];

   UISegmentedControl *segmentedControl = (id)sender;

   

   [UIView animateWithDuration:0.5

                         delay:0.0

                       options:UIViewAnimationOptionCurveEaseIn

                    animations:^ {

                        CGRect frameOfScrollView = scrollViewSettingPage.frame;

                        switch (segmentedControl.selectedSegmentIndex) {

                            case 0: {

                                frameOfScrollView.origin.x = 0;

                                scrollViewSettingPage.frame = frameOfScrollView;

                            }

                                break;

                               

                            case 1: {

                                frameOfScrollView.origin.x = -320;

                                scrollViewSettingPage.frame = frameOfScrollView;

                            }

                                break;

                               

                            case 2: {

                                frameOfScrollView.origin.x = -640;

                                scrollViewSettingPage.frame = frameOfScrollView;

                            }

                                break;

                               

                            default:

                                break;

                        }

                    }

                    completion:^(BOOL finished) {

                    }];

}




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