Question

我有一个实现水平图库的应用。在我的故事板中，当一个作业（桌面视图中的单元格）被点击时，它将重定向并显示作业详细信息。在我的工作细节场景中：我有索引0：公司徽标和名称，工资和职位。在索引1中：我有水平图库 - 我以编程方式创建了一个scrollview，并在scrollview中创建了一个图像视图。这是我创建滚动视图和图像视图的方式：

else if (indexPath.section == 1)
{
    [self getImages];
    [cell.contentView addSubview:self.scrollView];

    return cell;
}

- (void)getImages
{
    mutableURLstorage = [[NSMutableArray alloc] init];
    imagesArray = [[NSMutableArray alloc]init];
    NSInteger noOfImages = (unsigned long)[mutableStorage count];
    NSString* strURL;

    //store image_paths (company and branch) in a mutable array
    for (int i = 0; i < noOfImages; i++)
    {   
        NSDateFormatter *df=[[NSDateFormatter alloc] init];
        [df setDateFormat:@"yyyy-MM-dd hh:mm:ss"];
        NSDate *date = [NSDate date];
        NSDate *oneMinLater = [date dateByAddingTimeInterval:1444];
        NSString *hmac_body =[NSString stringWithFormat:@"%@\n%lld\n%@",METHOD,[@(floor([oneMinLater timeIntervalSince1970])) longLongValue],CONTAINER_PATH] ;

        // below get different string with shaA diagest
        const char *cKey2 = [KEY cStringUsingEncoding:NSASCIIStringEncoding];
        const char *cData2 = [hmac_body cStringUsingEncoding:NSASCIIStringEncoding];
    unsigned char cHMAC2[CC_SHA1_DIGEST_LENGTH];
        CCHmac(kCCHmacAlgSHA1, cKey2, strlen(cKey2), cData2, strlen(cData2), cHMAC2);
        NSData *HMAC2 = [[NSData alloc] initWithBytes:cHMAC2 length:sizeof(cHMAC2)];
        NSString *HMACStr = [[HMAC2 description] stringByReplacingOccurrencesOfString:@"<" withString:@""];
        HMACStr = [HMACStr stringByReplacingOccurrencesOfString:@">" withString:@""];
        HMACStr = [HMACStr stringByReplacingOccurrencesOfString:@" " withString:@""];
        strURL = [NSString stringWithFormat:@"%@%@?temp_url_sig=%@&temp_url_expires=%lld", URLstorage, CONTAINER_PATH, HMACStr, [@(floor([oneMinLater timeIntervalSince1970])) longLongValue]];

        [mutableURLstorage addObject:strURL];
        [imagesArray addObject:[[UIImage alloc] initWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:strURL]]]];
}

    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGSize pageSize = CGSizeMake(ITEM_WIDTH, self.scrollView.frame.size.height);
    _pgCtr = [[UIPageControl alloc] initWithFrame:CGRectMake(0, screenRect.size.height-30, 320, 36)];
    _pgCtr.backgroundColor=[UIColor grayColor];

    int numberofPage=ceil((float)[imagesArray count]/3.5);
    _pgCtr.numberOfPages= numberofPage;
    self.scrollView.contentSize = CGSizeMake(320*numberofPage, pageSize.height);

    int imgCurrentX = 10;
    for (UIImageView* image in imagesArray) {
        @autoreleasepool {
            imageview = [[UIImageView alloc] initWithFrame:CGRectMake(imgCurrentX, 0, 70, 70)];
            imageview.image = (UIImage*)image;
            [imageview setUserInteractionEnabled:YES];
            [self.scrollView addSubview:imageview];
            imgCurrentX = imgCurrentX+80;
        }
    }
}

我能够显示水平图库，但图像全部用于缩略图。现在我在viewDidLoad中实现了这个代码，以确定是否点击了imageview：

[self.view addGestureRecognizer:[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(singleTapAction:)]];

在我的 singleTapAction 方法中，我使用LeveyPopListView来显示放大的图像。

- (void)singleTapAction:(UIGestureRecognizer *)singleTap_
{
    [self createLeveyPopList];
}

- (void)createLeveyPopList
{
    NSString *jobs_name = @"JOBSD";

    if(self.lplv.delegate != nil)
        return;

    self.lplv = [[LeveyPopListView alloc] initWithTitle:@"The following jobs are located here:" options:imagesArray jobName:jobs_name handler:^(NSInteger anIndex) {
}];
    self.lplv.delegate = self;
    [self.lplv showInView:self.view animated:YES];
}

我在弹出窗口中所做的是重新显示原始图像库（作业详细信息场景中的图像库），但图像被放大了。我的应用程序成功实现了水平图库。现在我的问题是，例如图像2被点击，我需要首先显示图像2而不是首先显示图像1。我希望有人可以帮助我。谢谢！

Answer 1

添加一种方法来更改包含图像的ImageView的大小，如下所示：

- (IBAction)buttonTapped:(id)sender {
 // Use this Sender property to your advantage
   [yourImageViewName setFrame:CGRectMake(0, 0, 100, 100)];
}

当然，根据您的需要调整坐标。您还可以在IB中的图像视图设置中进行游戏，以确保在放大时图片不会变形。

现在，您还可以为图片添加标签，并根据您按下的标签放大图片视图。如果您想转而使用该路线，请告诉我，我会发布该代码。我希望我能帮忙！

轻敲ios时放大图像

1 个答案: