首次上传

单军华

2018-07-11 7b02207537d35bfa1714bf8beafc921f717d100a

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
//
//  PresentAnimator.m
//  transparentwebview
//
//  Created by windshan on 2018/3/14.
//  Copyright © 2018年 prjk. All rights reserved.
//
 
#import "PresentAnimator.h"
 
void *id_key = &id_key;
@implementation UIViewController (LMJAdd)
 
- (void)setId_key:(id)obj {
    objc_setAssociatedObject(self, id_key, obj, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
 
- (id)id_key
{
    return objc_getAssociatedObject(self, id_key);
}
 
@end
 
@interface PresentAnimator()<UIViewControllerTransitioningDelegate, UIViewControllerAnimatedTransitioning>
{
    BOOL _isPresented;
    CGRect _presentViewFrame;
    void(^_presentAnimation)(UIView *presentedView, UIView *containerView, void(^completion)(BOOL finished));
    void(^_dismissAnimation)(UIView *dismissView, void(^completion)(BOOL finished));
    CGFloat _animatedDuration;
}
 
@end
 
 
@implementation PresentAnimator
 
#pragma mark - UIViewControllerTransitioningDelegate
 
- (UIPresentationController *)presentationControllerForPresentedViewController:(UIViewController *)presented presentingViewController:(UIViewController *)presenting sourceViewController:(UIViewController *)source {
    //    A presentViewController B 后，a.presentedViewController就是b，b.presentingViewController就是a，
    LMJPresentationController *presVc = [[LMJPresentationController alloc] initWithPresentedViewController:presented presentingViewController:presenting];
    if (!CGRectIsEmpty(_presentViewFrame)) {
        presVc.presentViewFrame = _presentViewFrame;
    }else {
        presVc.presentViewFrame = [UIScreen mainScreen].bounds;
    }
    
    return presVc;
}
 
- (nullable id <UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source
{
    _isPresented = YES;
    return self;
}
 
- (nullable id <UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed
{
    _isPresented = NO;
    return self;
}
 
 
#pragma mark - UIViewControllerAnimatedTransitioning
 
- (NSTimeInterval)transitionDuration:(id<UIViewControllerContextTransitioning>)transitionContext
{
    return _animatedDuration;
}
 
- (void)animateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    _isPresented ? [self presentAnimateTransition: transitionContext] : [self dismissAnimateTransition: transitionContext];
}
 
- (void)presentAnimateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    //    A presentViewController B 后，a.presentedViewController就是b，b.presentingViewController就是a，
    UIView *containerView = transitionContext.containerView;
    UIView *presentedView = [transitionContext viewForKey:UITransitionContextToViewKey];
    [containerView addSubview:presentedView];
    
    if (_presentAnimation) {
        TWWeak(presentedView);
        TWWeak(transitionContext);
        TWWeak(containerView);
        _presentAnimation(weakpresentedView, weakcontainerView, ^void(BOOL isFinished){
            ///当view的缩放动画完成的时候, 一定要告诉转场上下文
            [weaktransitionContext completeTransition:isFinished];
        });
    }else {
        ///当view的缩放动画完成的时候, 一定要告诉转场上下文
        [transitionContext completeTransition:YES];
    }
}
 
- (void)dismissAnimateTransition:(id<UIViewControllerContextTransitioning>)transitionContext
{
    //    A presentViewController B 后，a.presentedViewController就是b，b.presentingViewController就是a，
    UIView *dismissView = [transitionContext viewForKey:UITransitionContextFromViewKey];
    
    if (_dismissAnimation) {
        TWWeak(dismissView);
        TWWeak(transitionContext);
        _dismissAnimation(weakdismissView, ^void(BOOL isFinished){
            [weakdismissView removeFromSuperview];
            ///当view的缩放动画完成的时候, 一定要告诉转场上下文
            [weaktransitionContext completeTransition:isFinished];
        });
    }else {
        [dismissView removeFromSuperview];
        ///当view的缩放动画完成的时候, 一定要告诉转场上下文
        [transitionContext completeTransition:YES];
    }
}
 
 
+ (void)viewController:(UIViewController *)viewController presentViewController:(UIViewController *)presentViewController presentViewFrame:(CGRect)presentViewFrame  animated:(BOOL)animated completion:(void (^)(void))completion animatedDuration:(NSTimeInterval)duration presentAnimation:(void(^)(UIView *presentedView, UIView *containerView, void(^completionHandler)(BOOL finished)))presentAnimation dismissAnimation:(void(^)(UIView *dismissView, void(^completionHandler)(BOOL finished)))dismissAnimation
{
    PresentAnimator *animator = [[PresentAnimator alloc] init];
    animator->_presentViewFrame = presentViewFrame;
    animator->_animatedDuration = duration;
    animator->_presentAnimation = [presentAnimation copy];
    animator->_dismissAnimation = [dismissAnimation copy];
    [presentViewController setId_key:animator];
    presentViewController.modalPresentationStyle = UIModalPresentationCustom;
    presentViewController.transitioningDelegate = animator;
    [viewController presentViewController:presentViewController animated:animated completion:completion];
}
 
@end
 
 
@implementation LMJPresentationController
 
- (void)containerViewWillLayoutSubviews {
    [super containerViewWillLayoutSubviews];
    self.presentedView.frame = self.presentViewFrame;
}
 
@end