iOS轉場動畫初探，ios轉場初探

iOS轉場動畫初探，ios轉場初探

一般我們就用兩種轉場push和present

present

/** 1.設定代理 - (instancetype)init { self = [super init]; if (self) { self.transitioningDelegate = self; self.modalPresentationStyle = UIModalPresentationCustom; } return self; } 2.添加協議<UIViewControllerTransitioningDelegate> 3.重寫協議方法 － 在協議方法裡面初始化 - (id<UIViewControllerAnimatedTransitioning>)animationControllerForPresentedController:(UIViewController *)presented presentingController:(UIViewController *)presenting sourceController:(UIViewController *)source{  }  - (id<UIViewControllerAnimatedTransitioning>)animationControllerForDismissedController:(UIViewController *)dismissed{  } **/

2.push

第一個控制器推第二個控制器的時候

 　　ViewController2 *vc = [[ViewController2 alloc]init];    self.navigationController.delegate = vc; //必須寫這句話    [self.navigationController pushViewController:vc animated:YES];

第二個控制器

@interface ViewController2 : UIViewController<UINavigationControllerDelegate>@end

代理方法

- (id<UIViewControllerAnimatedTransitioning>)navigationController:(UINavigationController *)navigationController animationControllerForOperation:(UINavigationControllerOperation)operation fromViewController:(UIViewController *)fromVC toViewController:(UIViewController *)toVC {}

上面就是push和present發生的地方，都需要返回一個 UIViewControllerAnimatedTransitioning

所以我們寫一個類

@interface WJTransiation_Mobile : NSObject<UIViewControllerAnimatedTransitioning>

@end

然後修改裡面的協議方法

//動畫時間

- (NSTimeInterval)transitionDuration:(nullable id <UIViewControllerContextTransitioning>)transitionContext;

//自訂過渡動畫

- (void)animateTransition:(id <UIViewControllerContextTransitioning>)transitionContext;

執行過渡動畫

1.擷取前後控制器

 　　UIViewController *toVC = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey];    UIViewController *fromVC = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey];

2.獲得轉場動畫視圖

UIView *containerView = [transitionContext containerView];

3.將前後控制器需要進行動畫的視圖添加到containerView上

 　　[containerView addSubview:tempView];    [containerView addSubview:toVC.view];

4.執行自己的動畫

demo連結:http://pan.baidu.com/s/1kTPPUMb

：

補：

//動態添加transiationView屬性@interface UIViewController (transiationView)@property (nonatomic,strong)UIView *transiationView;@end

#import <objc/runtime.h>@implementation UIViewController (transiationView)static char transiationViewKey;- (void)setTransiationView:(UIView *)transiationView {    return objc_setAssociatedObject(self, &transiationViewKey, transiationView, OBJC_ASSOCIATION_RETAIN_NONATOMIC);}- (UIView *)transiationView {     return objc_getAssociatedObject(self, &transiationViewKey);}@end