UiviewController 自定義present 動畫 UIViewControllerAnimatedTransitioning

UIviewController 自定義present 動畫

//
//  PresentAndDismissAnimationController.h
//  TestTranstation
//
//  Created by lance on 14/11/24.
//  Copyright (c) 2014年 Lance. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface PresentAndDismissAnimationController : NSObject <UIViewControllerAnimatedTransitioning>

@property (nonatomic, assign) BOOL isPresenting;

@end

//
//  PresentAndDismissAnimationController.m
//  TestTranstation
//
//  Created by lance on 14/11/24.
//  Copyright (c) 2014年 Lance. All rights reserved.
//

#import "PresentAndDismissAnimationController.h"

@implementation PresentAndDismissAnimationController

- (NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext
{
    return 0.5;
}

- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    /**
     *  dismissing
     */
    if (self.isPresenting) {
        [self executeDismissAnimation:transitionContext];
    } else {
        [self executePresentationAnimation:transitionContext];
    }
}

/**
 *  present 動畫
 *
 *  @param transitionContext
 */
- (void)executePresentationAnimation:(id<UIViewControllerContextTransitioning>)transitionContext
{
    UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    
    UIView *containerView = [[UIApplication sharedApplication] keyWindow];
    
    CGRect frame = containerView.bounds;
    frame.origin.y = -CGRectGetHeight(frame);
    toViewController.view.frame = frame;
    [containerView addSubview:toViewController.view];
    
    NSTimeInterval duration = [self transitionDuration:transitionContext];
    
    frame.origin.y = 0;
    [UIView animateWithDuration:duration animations:^{
        toViewController.view.frame = frame;
    } completion:^(BOOL finished) {
        [transitionContext completeTransition:YES];
    }];
}

/**
 *  dismiss 動畫
 *
 *  @param transitionContext 
 */
- (void)executeDismissAnimation:(id<UIViewControllerContextTransitioning>)transitionContext
{
    
    UIViewController *fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];
    
    UIViewController *toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];
    
    UIView *containerView = [[UIApplication sharedApplication] keyWindow];
    
    CGRect frame = containerView.bounds;
    frame.origin.y = - CGRectGetHeight(frame);
    
    toViewController.view.userInteractionEnabled = YES;
    
    [transitionContext.containerView addSubview:toViewController.view];
    [transitionContext.containerView addSubview:fromViewController.view];
    
    [UIView animateWithDuration:[self transitionDuration:transitionContext] animations:^{
        toViewController.view.tintAdjustmentMode = UIViewTintAdjustmentModeAutomatic;
        fromViewController.view.frame = frame;
    } completion:^(BOOL finished) {
        [transitionContext completeTransition:YES];
    }];
}

@end