Question

使用点击手势创建ImageView列表时遇到问题。当我创建手势时，不会调用选择器功能。当我创建只有一个imageView函数被调用。知道为什么吗？这是一个大型滚动视图的子视图。

这是我的代码：

UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self     action:@selector(imageTaped:)];
singleTap.numberOfTapsRequired = 1;
singleTap.numberOfTouchesRequired = 1;
for(int k=0;k<MyList.count;k++){
    for(int i=0;i<listSize;i++){
        UIImageView *clickForDetail =[[UIImageView alloc]initWithFrame:CGRectMake(i*HELLO_WIDTH,k*LIST_ROW_HEIGH ,HELLO_WIDTH, LIST_ROW_HEIGH)];
        clickForDetail.backgroundColor = [UIColor clearColor];
        clickForDetail.tag = tag;
        clickForDetail.userInteractionEnabled = YES;
        [clickForDetail addGestureRecognizer:singleTap];

        [myScroll addSubview:clickForDetail];
        tag++;
    }
}

和选择器功能：

-(void)imageTaped: (UITapGestureRecognizer *)recognizer
{
    NSLog(@"single Tap on imageview");
}

是否有可能以某种方式获取被点击的ImageView的标签？

Answer 1

您需要为每个视图对象添加不同的点击手势

for(int k=0;k<MyList.count;k++){
    for(int i=0;i<listSize;i++){
UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self     action:@selector(imageTaped:)];
singleTap.numberOfTapsRequired = 1;
singleTap.numberOfTouchesRequired = 1;
        UIImageView *clickForDetail =[[UIImageView alloc]initWithFrame:CGRectMake(i*HELLO_WIDTH,k*LIST_ROW_HEIGH ,HELLO_WIDTH, LIST_ROW_HEIGH)];
        clickForDetail.backgroundColor = [UIColor clearColor];
        clickForDetail.tag = tag;
        clickForDetail.userInteractionEnabled = YES;
        [clickForDetail addGestureRecognizer:singleTap];

        [epgScroll addSubview:clickForDetail];
        tag++;
    }
}


-(void)imageTaped: (UITapGestureRecognizer *)recognizer
{
    NSLog(@"single Tap on imageview");
UIImageView *selectedTextView = (UIImageView *)recognizer.view;
}

使用点击手势识别器添加图像视图列表时未调用选择器功能

1 个答案: