关于iCarousel和iOS
我有两个标签 第一个名为“标签”的标签放置在旋转木马内的每个视图中。标签的字符串/文本是视图的索引关于iCarousel和iOS,ios,icarousel,Ios,Icarousel,我有两个标签 第一个名为“标签”的标签放置在旋转木马内的每个视图中。标签的字符串/文本是视图的索引 label.text = [[items1 objectAtIndex:index] stringValue]; 我还有第二个标签(在旋转木马外面),名为“outsideLabel”。 我希望outsideLabel的字符串/文本也成为视图的索引(视图始终位于旋转木马的前面) 不知怎的,我做错了,不知道该如何编码,以便在outsideLabel的字符串/文本中显示正确的数字(视图总是在前面)。代
label.text = [[items1 objectAtIndex:index] stringValue];
我还有第二个标签(在旋转木马外面),名为“outsideLabel”。
我希望outsideLabel的字符串/文本也成为视图的索引(视图始终位于旋转木马的前面)
不知怎的,我做错了,不知道该如何编码,以便在outsideLabel的字符串/文本中显示正确的数字(视图总是在前面)。代码显示了正确的数字,但在旋转木马中向后滚动时会出错。转盘类型是timeMachine
我当前的代码:
- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view
{
//create new view if no view is available for recycling
if (view == nil)
{
view = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 200.0f, 200.0f)];
view.contentMode = UIViewContentModeCenter;
label = [[UILabel alloc] initWithFrame:view.bounds];
label.backgroundColor = [UIColor clearColor];
label.textColor = [UIColor whiteColor];
if (carousel == carousel1)
{
CGRect test = CGRectMake(10, 10, 20, 20);
self.label.frame = test;
}
else {
CGRect test = CGRectMake(50, 40, 40, 40);
self.label.frame = test;
}
[view addSubview:label];
}
else
{
label = [[view subviews] lastObject];
}
if (carousel == carousel1)
{
//items in this array are numbers
outsideLabel.text = [[items1 objectAtIndex:index] stringValue];
label.text = [[items1 objectAtIndex:index] stringValue];
((UIImageView *)view).image = [UIImage imageNamed:[view1background objectAtIndex:index]];
}
else
{
//not relevant....
}
return view;
}
在我看来,你想要的是“时光机器”式的旋转木马。我没有看到你的代码在任何地方设置旋转木马类型。您不需要设置转盘类型吗?根据您提供的代码,您似乎没有在正确的位置初始化
外部标签。为了安全起见,您应该在检查视图是否为nil
的块内初始化所有子视图。另一个安全约定是将标记分配给所有子视图,以便以后可以从重用的视图中检索它们,如下面的代码所示。为了便于参考和避免错误,我在实现文件的顶部为这些标记定义了常量,如下所示:
#define INSIDE_LABEL_TAG 1
#define OUTSIDE_LABEL_TAG 2
这更安全,因为它不依赖于视图的结构,就像您的代码一样,您可以在代码中获得最后一个视图:
label = [[view subviews] lastObject];
尝试在该块内部初始化外部标签
,并使用标记。初始化中使用的模式与委托中UITableViewDataSource
单元格的子视图中使用的模式相同:
(UITableViewCell * _Nonnull)tableView:(UITableView * _Nonnull)tableView
cellForRowAtIndexPath:(NSIndexPath * _Nonnull)indexPath
下面是一些伪代码,显示了我将在何处使用标记并初始化outsideLabel
:
- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view
{
//create new view if no view is available for recycling
if (view == nil)
{
//Configure the view
...
/* Initialize views for all carousels */
//Initialize the insideLabel and set its tag
...
insideLabel.tag = INSIDE_LABEL_TAG;
//Initialize the outsideLabel and set its tag
...
outsideLabel.tag = OUTSIDE_LABEL_TAG;
if (carousel == carousel1)
{
//Do any carousel-specific configurations
}
//Add all subviews initialized in this block
[view addSubview:label];
[view addSubview:outsideLabel];
}
else
{
//Get the subviews from an existing view
insideLabel = (UILabel *)[view viewWithTag:INSIDE_LABEL_TAG];
outsideLabel = (UILabel *)[view viewWithTag:OUTSIDE_LABEL_TAG];
}
if (carousel == carousel1)
{
//Set the values for each subview
} else {
//Other carousels...
}
return view;
}
我正在viewDidLoad方法中设置类型。是的,它已经是时间机器了。我仍然只看到一张卡片而不是几张。你看过iCarousel演示应用程序了吗?它们包括时间机器外观的工作演示。(我已经有一段时间没有建立一个新的iCarousel了,所以我记不清上面的细节。)你试过iCarousel的委托方法吗--(void)carouselCurrentItemIndexDidChange:(iCarousel*)carousel?尝试在此处设置值。。希望这能对你有所帮助
- (UIView *)carousel:(iCarousel *)carousel viewForItemAtIndex:(NSInteger)index reusingView:(UIView *)view
{
//create new view if no view is available for recycling
if (view == nil)
{
//Configure the view
...
/* Initialize views for all carousels */
//Initialize the insideLabel and set its tag
...
insideLabel.tag = INSIDE_LABEL_TAG;
//Initialize the outsideLabel and set its tag
...
outsideLabel.tag = OUTSIDE_LABEL_TAG;
if (carousel == carousel1)
{
//Do any carousel-specific configurations
}
//Add all subviews initialized in this block
[view addSubview:label];
[view addSubview:outsideLabel];
}
else
{
//Get the subviews from an existing view
insideLabel = (UILabel *)[view viewWithTag:INSIDE_LABEL_TAG];
outsideLabel = (UILabel *)[view viewWithTag:OUTSIDE_LABEL_TAG];
}
if (carousel == carousel1)
{
//Set the values for each subview
} else {
//Other carousels...
}
return view;
}