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