从滚动视图添加多个图像

Question

我需要 select 滚动视图中的多张图片。

如果我触摸该图像，它会显示 selection 刻度（复选）标记；如果我再碰它，它就会被 deselected。

现在我是这样做的：

我希望当我点击那个特定的图像时它会显示一个勾号（复选标记）；如果我触摸第二个，那么它会为这张图片显示一个勾号（打勾），就像我们从相机胶卷中 select 图片一样。

所以，请尽快帮助我。

以下是我的代码：

-(void)listimagesandanmae
{

int myFavV = [favCompcamelIDArr count];
for (int i = 0; i < myFavV; i++)
{
    CGFloat xOrigin = i * 100;


    favimageView = [[UIImageView alloc] initWithFrame:CGRectMake(xOrigin+20,10,70,70)];

    favimageView.layer.cornerRadius = favimageView.frame.size.width / 2;
    favimageView.clipsToBounds = YES;

    //        imageView.layer.cornerRadius = 60;
    //        imageView.clipsToBounds = YES;
    favimageView.tag=i;

    NSInteger tag = favimageView.tag;
    // then do what you want with this

    if (([favCompcamelIDArr count] >0) ) {


    }

    favnamelistingLbl=[[UILabel alloc]initWithFrame:CGRectMake(xOrigin+23,90,90,27)];

    favnamelistingLbl.textAlignment = NSTextAlignmentCenter;

    favnamelistingLbl.tag=i;


    NSLog(@"%lu",(unsigned long)[favcompnsmeArr count]);

    if (([favCompcamelIDArr count] > 0) ) {

        favnamelistingLbl.text=[favcompnsmeArr objectAtIndex:i];

    }

    [_selectCamelFav addSubview:favnamelistingLbl];

    UITapGestureRecognizer *tappedmyFav = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tappedmyFav:)];
    tappedmyFav.numberOfTapsRequired = 1;

    [favimageView addGestureRecognizer:tappedmyFav];
    NSLog(@"%ld",(long)tag);

    NSString *urStCam=@"http://192.8.1.42:/da/";
    NSString *urStCam1=[urStCam stringByAppendingString:[favcompictureArr objectAtIndex:i]];

    NSString *urStCam2= [urStCam1 stringByReplacingOccurrencesOfString:@"\n" withString:@""];


    [caArray addObject:urStCam2];
    NSLog(@"%@",caArray);

    NSURL *newUrl=[NSURL URLWithString:[caArray objectAtIndex:i]];
    NSData *imageDatash = [NSData dataWithContentsOfURL:newUrl];
    UIImage *image123 = [UIImage imageWithData:imageDatash scale:2.0];
    [favimageView setImage:image123];

    [_selectCamelFav addSubview:favimageView];
    favimageView.userInteractionEnabled = YES;


}
_selectCamelFav.contentSize = CGSizeMake(myFavV * 210, 171);

[_indicatorA startAnimating];
_indicatorA.hidden=YES;


 }

  - (void)tappedmyFav:(UITapGestureRecognizer*)tap
 {
 UITapGestureRecognizer *gesture = (UITapGestureRecognizer *) tap;

  }

Answer 1

您应该继承 UIView。然后添加 UIImageView、UILabel（复选标记）和一个属性来控制 UIView 是否被选中。同时添加 Tap 手势处理程序（选择 = !selected when tapped）

要搜索选择了哪个视图，请在滚动视图中搜索 'selected' UIView 对象。或者您可以在对象为 'selected/unselected' 时维护自己的列表，这样您就不需要搜索所有对象。

从滚动视图添加多个图像

Adding multiple images from a scrollview

objective-c

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ios