iOS - View Transitions（視圖轉(zhuǎn)換）

使用視圖過渡

視圖過渡是一個(gè)視圖中添加的另一個(gè)視圖，一個(gè)適當(dāng)?shù)倪^渡動(dòng)畫效果的有效途徑。

更新 ViewController.xib 如下：

創(chuàng)建的按鈕中創(chuàng)建的動(dòng)作在 xib 中

更新 ViewController.h 內(nèi)容

聲明兩個(gè)視圖 ViewController 類的實(shí)例。ViewController.h 文件將創(chuàng)建動(dòng)作后，如下所示。

#import <UIKit/UIKit.h>

@interface ViewController : UIViewController
{
    UIView *view1;
    UIView *view2;
}

-(IBAction)flipFromLeft:(id)sender;
-(IBAction)flipFromRight:(id)sender;
-(IBAction)flipFromTop:(id)sender;
-(IBAction)flipFromBottom:(id)sender;
-(IBAction)curlUp:(id)sender;
-(IBAction)curlDown:(id)sender;
-(IBAction)dissolve:(id)sender;
-(IBAction)noTransition:(id)sender;

@end

Update ViewController.m

We will add a custom method setUpView to initialize the views. We also create another method doTransitionWithType: that creates transition from view1 to view2 or vice versa. Then we will implement the action methods we created before that calls the doTransitionWithType: method with the transition type. The updated ViewController.m is follows

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self setUpView];
	// Do any additional setup after loading the view, typically from a nib.
}

-(void)setUpView{
    view1 = [[UIView alloc]initWithFrame:self.view.frame];
    view1.backgroundColor = [UIColor lightTextColor];
    view2 = [[UIView alloc]initWithFrame:self.view.frame];
    view2.backgroundColor = [UIColor orangeColor];
    [self.view addSubview:view1];
    [self.view sendSubviewToBack:view1];

}

-(void)doTransitionWithType:(UIViewAnimationTransition)animationTransitionType{
    if ([[self.view subviews] containsObject:view2 ]) {
        [UIView transitionFromView:view2
                            toView:view1
                          duration:2
                           options:animationTransitionType
                        completion:^(BOOL finished){
                            [view2 removeFromSuperview];
                        }];
        [self.view addSubview:view1];
        [self.view sendSubviewToBack:view1];
    }
    else{
        
        [UIView transitionFromView:view1
                            toView:view2
                          duration:2
                           options:animationTransitionType
                        completion:^(BOOL finished){
                            [view1 removeFromSuperview];
                        }];
        [self.view addSubview:view2];
        [self.view sendSubviewToBack:view2];
        
    }
}


-(IBAction)flipFromLeft:(id)sender
{
    [self doTransitionWithType:UIViewAnimationOptionTransitionFlipFromLeft];
  
}
-(IBAction)flipFromRight:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionFlipFromRight];

}
-(IBAction)flipFromTop:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionFlipFromTop];

}
            
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