【发布时间】:2016-04-15 21:18:36
【问题描述】:
我无法弄清楚为什么滚动视图没有被滚动,而 current_set 变量正在增加。当 UIScrollView 是 UITableView 的子视图时,编写滚动 UIScrollView 的代码的确切位置是什么?
这是我的代码:
tableView:cellForRowAtIndexPath:方法的定义:
- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *cellIdentifier=[NSString stringWithFormat:@"regularExerciseCell%li",indexPath.row];
RegularExerciseCell *cell=[tableView1 dequeueReusableCellWithIdentifier:cellIdentifier];
if(!cell)
{
[tableView1 registerNib:[UINib nibWithNibName:@"RegularExerciseCell" bundle:nil] forCellReuseIdentifier:@"regularExerciseCell"];
cell=[tableView1 dequeueReusableCellWithIdentifier:@"regularExerciseCell"];
}
NSLog(@"cellForRow At indexPath %li",indexPath.row);
return cell;
}
这里是tableView:willDisplayCell:forRowAtIndexPath:方法的定义
-(void)tableView:(UITableView *)tableView willDisplayCell:(RegularExerciseCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath
{
if(selectedIndex==indexPath.row)
{
cell.routineViewCard.hidden=NO;
//SCROLL VIEW
float scrollView_width=[UIScreen mainScreen].bounds.size.width;
cell.setsScrollView.tag=indexPath.row;
totalSetsInActiveExercise=[array count];
for (int k=0; k<=totalSetsInActiveExercise; k++)
{
[cell.setsScrollView addSubview:[self subviewOfScrollView:scrollView_width]];
}
cell.setsScrollView.contentSize = CGSizeMake(scrollView_width*([workoutViewSetData count]+1),cell.setsScrollView.frame.size.height);
if(condition) //this condition may be true or false depending upon the scenario
{
[self moveToNextSet:indexPath.row and:@"left"];
}
}
else
{
cell.routineViewCard.hidden=YES;
}
}
真正滚动滚动视图的方法
-(void)moveToNextSet:(long)sender_tag and:(NSString*)direction
{
NSIndexPath *indexPath=[NSIndexPath indexPathForItem:sender_tag inSection:1];
RegularExerciseCell *cell=(RegularExerciseCell*) [workoutTableView cellForRowAtIndexPath:indexPath];
if ([direction isEqualToString:@"right"])
{
if(current_set!=0)
current_set--;
}
else if([direction isEqualToString:@"left"])
{
current_set++;
}
CGRect frame = CGRectMake((cell.setsScrollView.bounds.size.width*(current_set)),0,cell.setsScrollView.bounds.size.width,cell.setsScrollView.bounds.size.height);
[cell.setsScrollView scrollRectToVisible:frame animated:YES];
}
【问题讨论】:
-
我会使用您在“willDisplayCell:forRowAtIndexPath:”中的代码并将其与“cellForIndexPath”一起放入可能会尝试一下
标签: ios objective-c uitableview uiscrollview