Question

我正在开发一个应用程序，我有15个图像存储在阵列中作为前图像和另外15个图像作为后图像。我想将该图像垂直添加到scrollview我已成功完成，但现在我的问题是如何比较这两个数组图像。

在垂直滚动视图上添加正面图像成功添加但未随机改组，即当我双击前面的图像时，显示后面的阵列图像，但仍然在该图像视图中显示前面的图像。

请帮我解决这个问题。

提前致谢。

请检查我的代码：

- (void)viewDidLoad
{
    [super viewDidLoad];


    AppDelegate * delegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];

    delegate.front=TRUE;
    delegate.back=FALSE;


    UIScrollView *scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];

    [scrollView setPagingEnabled:YES];

    [scrollView setShowsHorizontalScrollIndicator:NO];

    FrontsCards=[[NSMutableArray alloc]initWithObjects:@"cloub1.png",@"cloub2.png",@"cloub3.png",@"cloub4.png",@"cloub5.png",@"cloub6.png",@"cloub7.png",@"cloub8.png",@"cloub9.png",@"cloub10.png",@"cloub11.png",@"cloub12.png",@"diamond1.png",@"diamond2.png",@"diamond3.png",@"diamond4.png",@"diamond5.png", nil];

    for(int m=0; m<[FrontsCards count];m++)
      {
        ImgView.tag=m;

        int randIdx=arc4random()%[FrontsCards count];


        NSString *imageName=[FrontsCards objectAtIndex:randIdx];

    //  NSLog(@"%d",randIdx);


        NSString *fullImageName=[NSString stringWithFormat:@"%@",imageName];

        int padding=25;
        // padding is given.

        CGRect imageViewFrame=CGRectMake(scrollView.frame.size.width*m+padding, scrollView.frame.origin.y, scrollView.frame.size.width-2*padding, scrollView.frame.size.height);

        ImgView=[[UIImageView alloc]initWithFrame:imageViewFrame];

        [ImgView setImage:[UIImage imageNamed:fullImageName]];

        [ImgView setContentMode:UIViewContentModeScaleAspectFill];


        [scrollView addSubview:ImgView];


        UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapImgView:)];
        doubleTap.numberOfTapsRequired = 2;
        doubleTap.delegate = self;

        [self.ImgView addGestureRecognizer:doubleTap];

        self.ImgView.userInteractionEnabled=YES;


    }

    CGSize scrollViewSize=CGSizeMake(scrollView.frame.size.width*[FrontsCards count], scrollView.frame.size.height);
    [scrollView setContentSize:scrollViewSize];
    [self.view addSubview:scrollView];




}


- (void)doubleTapImgView:(UITapGestureRecognizer *)gesture
{


    AppDelegate * delegate=(AppDelegate *)[[UIApplication sharedApplication]delegate];

    delegate.back=TRUE;

    delegate.front=FALSE;


    NSLog(@"%d", gesture.view.tag);

        NSLog(@"double-tap");

    BackCards =[[NSMutableArray alloc]initWithObjects:@"card1.jpg",@"card2.jpg",@"card3.jpg",@"card4.jpg", nil];

    UIScrollView *scrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, 320, 480)];

    [scrollView setPagingEnabled:YES];

    [scrollView setShowsHorizontalScrollIndicator:NO];

    for(int m=0; m< [BackCards count];m++)
    {       
        NSString *imageName=[BackCards objectAtIndex:m];

        NSString *fullImageName=[NSString stringWithFormat:@"%@",imageName];

        int padding=25;
        // padding is given.

        CGRect imageViewFrame=CGRectMake(scrollView.frame.size.width*m+padding, scrollView.frame.origin.y, scrollView.frame.size.width-2*padding, scrollView.frame.size.height);

        ImgView=[[UIImageView alloc]initWithFrame:imageViewFrame];

        [ImgView setImage:[UIImage imageNamed:fullImageName]];

        [ImgView setContentMode:UIViewContentModeScaleAspectFill];


        [scrollView addSubview:ImgView];


        UITapGestureRecognizer *doubleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(doubleTapImgView:)];
        doubleTap.numberOfTapsRequired = 2;
        doubleTap.delegate = self;

        [self.ImgView addGestureRecognizer:doubleTap];

        self.ImgView.userInteractionEnabled=YES;


    }

    CGSize scrollViewSize=CGSizeMake(scrollView.frame.size.width*[FrontsCards count], scrollView.frame.size.height);
    [scrollView setContentSize:scrollViewSize];
    [self.view addSubview:scrollView];

}

Answer 1

为了实现这一目标，您可以为每个图像设置Tag值，当您点击该特定图像时，您将获得标记值并使用该tag值。

self.imagview.tag=Unique_tagValue;

单击该图像时，您可以从另一个阵列设置图像。

self.imageview.image=[UIImage imageNamed:[backArray objectAtIndex:self.imageview.tag]];

编辑： -

用于imageview的viewDidLoad方法集标记中的

，ImgView.tag=m+100;

在doubleTapImgView方法

中保留以下代码

 for(int m=0; m< [BackCards count];m++)
    { 
      UIImageView *imgview=(UIImageView *)[scrollview viewWithTag:m+100];
      imgview.image=[UIImage imagNamed:[BackCards objectAtIndex:m]];
    }

子视图翻译： -

 [self.view bringSubviewToFront:frontview];

Answer 2

您可以对backArray和front Array中的图像使用相同的名称，也可以唯一地设置每个图像的标记值，并比较这些标记以解决问题。

 imgV.tag=tagValue;

希望这有帮助。

获取图像索引

2 个答案: