iOS视图切换(View Transitions)

IOS视图切换的使用

视图切换通过一系列动画效果实现,包括折叠切换、爆炸切换、卡片式切换等等。

修改 ViewController.xib，如下所示

在 xib 中创建按钮的操作

修改 ViewController.h

#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

在 ViewController 类中声明两个视图的实例。ViewController.h文件代码如下：

修改 ViewController.m

我们将添加自定义方法setUpView来初始化视图。

我们还将创建了另一种方法doTransitionWithType: 实现view1切换到view2，反之亦然。

后我们将执行之前创建的操作的方法即调用 doTransitionWithType: 方法与切换类型。ViewController.m代码如下:

#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];

}
-(IBAction)flipFromBottom:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionFlipFromBottom];

}
-(IBAction)curlUp:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionCurlUp];

}
-(IBAction)curlDown:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionCurlDown];

}
-(IBAction)dissolve:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionCrossDissolve];

}
-(IBAction)noTransition:(id)sender{
    [self doTransitionWithType:UIViewAnimationOptionTransitionNone];

}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

输出

现在当我们运行该应用程序我们会看到下面的输出

您可以选择不同的按钮，看切换是如何工作。选择蜷缩切换将效果如下所示