[转]IOS Segment页面之间view的切换

有三个view，分别为view1、view2、view3，通过UISegmentedControl进行三个view的切换。

@interface UIViewDemoViewController : UIViewController {
    IBOutlet UIView *view1;
    IBOutlet UIView *view2;
    IBOutlet UIView *view3;
}

- (IBAction)switchViews:(id)sender;
@end

在Interface Builder中分别建立三个view，关联到各自的输出口，每个view上的UISegmentedControl关联到switchViews:操作。

- (void)viewDidLoad {
    [super viewDidLoad];
    [self.view addSubview:view1];
    [self.view addSubview:view2];
    [self.view addSubview:view3];
}

- (IBAction)switchViews:(id)sender{
    UISegmentedControl *segmentedControl = sender;
    [[NSNotificationCenter defaultCenter] postNotificationName:@"switchViews" object:[NSNumber numberWithInteger:[segmentedControl selectedSegmentIndex]]];
}

接着，为UISegmentedControl控件建立一个处理类。

@interface SegmentedControl : UISegmentedControl {
    IBOutlet UIView *view1;
    IBOutlet UIView *view2;
    IBOutlet UIView *view3;
    IBOutlet UIViewDemoViewController* viewController;
}

@end

将UISegmentedControl控件的Class改为刚创建的处理类：SegmentedControl，然后，将UISegmentedControl控件关联到四个输出口：view分别关联到刚创建的三个view上，viewController关联到File's Owner上。

- (void)awakeFromNib{
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(switchViews:)
                                                 name:@"switchViews"
                                               object:nil];
}

- (void)switchViews:(NSNotification*)notification{
    NSNumber *viewNumber = [notification object];
    NSInteger i = [viewNumber integerValue];
    [self setSelectedSegmentIndex:i];
    UIView *chosenView = nil;
    switch (i) {
        case 0:
            chosenView = view1;
            break;
        case 1:
            chosenView = view2;
            break;
        case 2:
            chosenView = view3;
            break;
        default:
            break;
    }
    if (chosenView) {
        [[viewController view] bringSubviewToFront:chosenView];
    }
}

- (void)dealloc{
    [super dealloc];
    [[NSNotificationCenter defaultCenter] removeObserver:self];
}

代码可以到视图切换的动画效果进行下载。