Question

ios动画两个视图变换问题

贴代码

／／.m文件

@interface limingViewController ()

@property (weak, nonatomic) IBOutlet UILabel *count;

@property (weak, nonatomic) IBOutlet UIButton *button1;

@property (weak, nonatomic) IBOutlet UIButton *button2;

@property (weak, nonatomic) IBOutlet UIButton *button3;

@end

@implementation limingViewController

-(id) firstview

{

if(!_firstview)

{

_firstview=[[UIView alloc]initWithFrame:CGRectMake(65, 100, 200, 100)];

_firstview.backgroundColor=[UIColor redColor];

}

return _firstview;

}

-(id) secondview

{

if (!_secondview) {

_secondview=[[UIView alloc]init];

_secondview.backgroundColor=[UIColor blueColor];

}

return _secondview;

}

-(id) thirdview

{

if (!_thirdview) {

_thirdview=[[UIView alloc]init];

_thirdview.backgroundColor=[UIColor blackColor];

}

return _thirdview;

}

- (void)viewDidLoad

{

UIView *containview=[[UIView alloc]initWithFrame:self.firstview.frame];

self.firstview.frame=containview.bounds;

self.secondview.frame=containview.bounds;

self.thirdview.frame=containview.bounds;

[containview addSubview:self.secondview];

[containview addSubview:self.thirdview];

[containview addSubview:self.firstview];

[self.view addSubview:containview];

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

}

- (IBAction)redButton:(id)sender {

self.count1++;

self.count.text=[NSString stringWithFormat:@"Count:%d",self.count1];

[UIView transitionFromView:self.firstview toView:self.secondview duration:2 options:UIViewAnimationOptionTransitionFlipFromLeft|UIViewAnimationOptionShowHideTransitionViews completion:^(BOOL finished)

{}];

}
我想把第一个视图由动画的方式变换成第二个视图。但是为什么每次变换是会变成第三个视图。求大神告知。感激不尽。

Answer 1

[containview addSubview:self.secondview];

[containview addSubview:self.thirdview];

[containview addSubview:self.firstview];

你调换一下addSubview的顺序。你没指定层次关系，每次add都是到最顶层。

追问

能帮我把代码贴出来吗，你这么说我也不是很明白。

谢谢

追答

[containview addSubview:self.thirdview];
[containview addSubview:self.secondview];
[containview addSubview:self.firstview];

追问

我试了 还是失败。。。

追答

transitionFromView 这个方法本身是用来做翻转效果的，就像一张纸的A面翻到B面，二维世界实际只有2面，但你现在加了3个面进来，我不知道你想干什么，可能你是想调试代码，如果你实在想调试出一个结果，我建议你把三面分别设置三种背景颜色，位置错开，方便观察。