【代码笔记】剧幕拉开形的首页

一，工程图。

二，代码。

RootViewController.h

#import <UIKit/UIKit.h>
#import "UIImage+SplitImageIntoTwoParts.h"

@interface RootViewController : UIViewController
{
    UIImageView *left;
    UIImageView *right;
}

@end

 

RootViewController.m

#import "RootViewController.h"

@interface RootViewController ()

@end

@implementation RootViewController

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self) {
        // Custom initialization
    }
    return self;
}

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    
    
    NSArray *array = [UIImage splitImageIntoTwoParts:[UIImage imageNamed:@"1"]];
    
    left = [[UIImageView alloc] initWithImage:[array objectAtIndex:0]];
    right = [[UIImageView alloc] initWithImage:[array objectAtIndex:1]];
    
    left.transform = CGAffineTransformIdentity;
    right.transform = CGAffineTransformIdentity;
    
    [self.view addSubview:left];
    [self.view addSubview:right];
    
    [UIView beginAnimations:@"split" context:nil];
    [UIView setAnimationDelegate:self];
    [UIView setAnimationDuration:1];
    [UIView setAnimationDidStopSelector:@selector(animationDidStop:finished:context:)];
    
    left.transform = CGAffineTransformMakeTranslation(-160 ,0);
    right.transform = CGAffineTransformMakeTranslation(160 ,0);
    
    [UIView commitAnimations];

}
-(void)animationDidStop:(NSString *)animationID finished:(NSNumber *)finished context:(void *)context
{
    if ([animationID isEqualToString:@"split"] && finished) {
        [left removeFromSuperview];
        [right removeFromSuperview];
    }
}