导入“AppScrollView.h”

Question

我有UIScrollView个子视图UIView，此处UIView也有类型UIImageView的子视图。

层次结构类似于ViewController -> UIScrollView -> UIView -> UIImageView。

全部，UIScrollView, UIView, UIImageView动态添加，全部启用userInteractionEnabled=YES，当用户滚动下一个SIX UIScrollView时，UIViews上可见的SIX视图将可见。

我正在实施UITouch事件以检测UIImageView

上的任何触摸

-(void) touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
    //I want to detect particular UIImageView
}

-(void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
{
    //Here, user can move any UIImageView
}

但是，我无法检测到它的触摸。我试着用其他方式说here。还尝试了我的一些想法，但我找到了＆amp;意识到UIScrollView下的任何子视图都无法检测到任何对象。

我还尝试了另外一件事，我在UIView中添加了self.view作为子视图，任何有趣的知道，它会检测到touch !!

是否有人遇到过此类问题，有任何解决方案吗？任何帮助将不胜感激。

Answer 1

试试这个： -

- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
{
 UITouch *touch = [[event allTouches] anyObject];
 //sampleImageView is the imageView.
 CGPoint location = [touch locationInView:sampleImageView];
 if ([touch view] == sampleImageView) 
  {
    //.....    
  }
}

用于触摸检测。检查它希望它有所帮助。谢谢：）

Answer 2

你可以做一件事，

我已经面临同样的问题，所以在UIscrollview中添加Caustom UIButton并设置图像并将所有按钮的标签定义到UIButton中。这种方式非常顺利。

UIScrollView* scrForSubItem = [[UIScrollView alloc] initWithFrame:CGRectMake(10,2,1024,580)]; 
[scrForSubItem setAlwaysBounceVertical:YES];
scrForSubItem.minimumZoomScale = 1;
scrForSubItem.maximumZoomScale = 3;
scrForSubItem.scrollEnabled = YES;
scrForSubItem.pagingEnabled = NO;
scrForSubItem.directionalLockEnabled = YES;
scrForSubItem.showsVerticalScrollIndicator = YES;
scrForSubItem.backgroundColor = [UIColor clearColor];
scrForSubItem.delegate = self;

int xOffset = 0;
int yOffset = 0;
for (int i = 0; i < [currnetitem count]; i++) {


UIImageView* imgViewBtn=[[[UIImageView alloc]initWithFrame:CGRectMake(xOffset,yOffset,            246,170)] autorelease];

    [imgViewBtn setUserInteractionEnabled:YES];
    [imgViewBtn setContentMode:UIViewContentModeScaleAspectFit];
    imgViewBtn.image=btnImg;

    UIButton *btnSelectTile = [UIButton buttonWithType:UIButtonTypeCustom];
    [btnSelectTile setFrame:CGRectMake(0,0,246,170)];
    [btnSelectTile setTag:i];
    [btnSelectTile setBackgroundColor:[UIColor clearColor]];
    [btnSelectTile addTarget:self action:@selector(scrImagePressed:) forControlEvents:UIControlEventTouchUpInside];
    [imgViewBtn addSubview:btnSelectTile];

    [self.scrForSubItem addSubview:imgViewBtn];
   xOffset += btnSelectTile.frame.size.width+10;

    if(xOffset>scrollWidth)
    {
        xOffset=0;
        yOffset += btnSelectTile.frame.size.height+10;
        [scrForSubItem setContentSize:CGSizeMake(xOffset,yOffset)];
    }
    else{

        [scrForSubItem setContentSize:CGSizeMake(xOffset,170)];

    }

    [self.viewa ddSubview:scrForSubItem];

}

Answer 3

//创建.h文件

@interface AppScrollView：UIScrollView {

}

（ID）initWithFrame：方法（的CGRect）帧;

@end

//创建.m文件

导入“AppScrollView.h”

@implementation AppScrollView

（ID）initWithFrame：方法（的CGRect）帧 { if（[super initWithFrame：frame]）{ } 回归自我; }
- （void）touchesEnded：（NSSet *）触及withEvent：（UIEvent *）事件 {
//如果不拖动，请将事件发送给下一个响应者

if（！self.dragging）
```
[self.nextResponder touchesEnded: touches withEvent:event]; 
```
否则
```
[super touchesEnded: touches withEvent: event];
```
}

@end

现在在你的UIViewController

中

//为滚动视图创建对象

AppScrollView * scrollView;

UIScrollView未检测到UITouch事件

3 个答案:

导入“AppScrollView.h”