Question

我有一个包含两个子视图的视图。我有它工作，所以一次只显示一个子视图，每个子视图都有一个按钮，当点击按钮时，子视图将翻转，下一个子视图将出现。问题是看起来似乎整个视图都在翻转。在这个网站上阅读有关如何解决问题后，我尝试将子视图添加到容器中并翻转它。但是现在，虽然当我按下按钮时我的第一个子视图显示出来但它不再翻转。它没有做任何事情。我在方法中放了一个日志语句来翻转子视图，以及一个断点，据我所知，它不再被调用。我对xcode和目标c和代表都很新，我不知道如何继续。任何帮助，将不胜感激。感谢。

我在此处列出了相关代码： ViewController的标头

@interface ExerciseViewController : UIViewController<ExerciseSubViewDelegate>

//stuff for subviews
@property (nonatomic, strong) ExerciseSubViewImage *subViewImage;
@property (nonatomic, strong) ExerciseSubViewText *subViewText;
@property UIView *panel;

@end

这是ViewController的代码：

@interface ExerciseViewController ()

@end

@implementation ExerciseViewController

@synthesize subViewImage, subViewText;

- (void)viewDidLoad
{

    self.subViewImage.delegate = self;

    _panel = [[UIView alloc] initWithFrame:CGRectMake(0,0, self.view.bounds.size.width,  self.view.bounds.size.height/2)];
    _panel.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:_panel];
   [_panel addSubview:subViewImage];
}
-(ExerciseSubViewImage *)subViewImage
{
   if (!subViewImage)
   {

       CGRect subViewImageFrame = CGRectMake(0,0, _panel.bounds.size.width, _panel.bounds.size.height);
       self.subViewImage = [[ExerciseSubViewImage alloc] initWithFrame:subViewImageFrame];

       [_panel addSubview:subViewImage];

   }
    return subViewImage;
}
-(ExerciseSubViewText *)subViewText
{
    if (!subViewText)
    {

        CGRect subViewTextFrame = CGRectMake(0,0, _panel.bounds.size.width, _panel.bounds.size.height);
        self.subViewText = [[ExerciseSubViewText alloc] initWithFrame:subViewTextFrame];

        self.subViewText.backgroundColor = [UIColor blueColor];
        [_panel addSubview:subViewText];
    }
    return subViewText;
}

-(void)exerciseSubViewImagePressed
{

    [UIView transitionWithView:_panel
                      duration:0.2
                      options:UIViewAnimationOptionTransitionFlipFromRight
                    animations:^{
                         [subViewImage removeFromSuperview];
                        [_panel addSubview:subViewText];
                    }
                      completion: nil];
//This is how I did it before I added the container
    /*[UIView transitionFromView:subViewImage
                        toView:subViewText
                      duration:0.2
                       options:UIViewAnimationOptionTransitionFlipFromRight
                    completion:nil];
    self.subViewText.delegate = self;*/
    NSLog(@"Ipushedtheimage");
}
-(void)exerciseSubViewTextPressed
{//I haven't updated this yet
   [UIView transitionFromView:subViewText
                        toView:subViewImage
                      duration:0.2
                       options:UIViewAnimationOptionTransitionFlipFromRight
                    completion:nil];
    self.subViewImage.delegate = self;



- (void)didReceiveMemoryWarning
{

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

    subViewImage = nil;

    subViewText = nil;

}

@end

这是代理人的代码 #import

@protocol ExerciseSubViewDelegate <NSObject>

-(void) exerciseSubViewImagePressed;
-(void) exerciseSubViewTextPressed;

@end 我还添加了第一个子视图的代码：＃进口 #import“ExerciseSubViewDelegate.h”

@interface ExerciseSubViewImage : UIView

@property (nonatomic, strong) UIButton *button;
@property (nonatomic, assign) id<ExerciseSubViewDelegate>delegate;
@property (strong, nonatomic) UIImageView *exerciseImageView;


@end


#import "ExerciseSubViewImage.h"
#import "UIImage+animatedGIF.h"

@implementation ExerciseSubViewImage

@synthesize button;
@synthesize delegate;

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
        //Initialization code
        self.button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
        CGRect buttonFrame = CGRectMake(50,200,100,35);
        self.button.frame = buttonFrame;
        [self.button setTitle:@"Image"forState:UIControlStateNormal];
        [self.button addTarget:self
                    action:@selector(buttonTouched)
                    forControlEvents:UIControlEventTouchUpInside];
        [self addSubview:self.button];

        _exerciseImageView = [[UIImageView alloc] initWithFrame:CGRectMake(50,20,160,158)]; 

        NSURL *url = [[NSBundle mainBundle] URLForResource:@"AppleLogo" withExtension:@"gif"];
        _exerciseImageView.image = [UIImage animatedImageWithAnimatedGIFURL:url];
                             [self addSubview:self.exerciseImageView];


    }
    return self;
}
-(void)buttonTouched
{
    NSLog(@"imagebuttonpressed");
    [self.delegate exerciseSubViewImagePressed];
}

再一次，任何帮助都会受到赞赏。我知道我可能只是不理解简单的东西。

Answer 1

确定。这花了我整个周末，但我终于自己想出来了。我想我会在这里找到答案，万一其他人有类似的问题。在尝试了其他几种方法之后，我终于回到了我在这里使用的方法，并开始插入一大堆NSLog来确定每个东西执行的顺序。我最终做的是改变这个:(全部在顶部的ViewController中））

  self.subViewImage.delegate = self;

    _panel = [[UIView alloc] initWithFrame:CGRectMake(0,0, self.view.bounds.size.width,    self.view.bounds.size.height/2)];
    _panel.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:_panel];
   [_panel addSubview:subViewImage];

到此：

    //create panel
    _panel = [[UIView alloc] initWithFrame:CGRectMake(0,0, self.view.bounds.size.width, s   self.view.bounds.size.height/2)];
    _panel.backgroundColor = [UIColor whiteColor];
    [self.view addSubview:_panel];
    [_panel addSubview:subViewImage];

    //Set the subview delegates
    self.subViewImage.delegate = self;
    self.subViewText.delegate = self;

试图修复子视图翻转，现在子视图按钮不再起作用？

1 个答案: