[英]How to scroll UIScrollView programmatically which is a subview of the custom UITableViewCell?
我不知道為什么在增大current_set變量的情況下不能滾動滾動視圖。當它是UITableView的子視圖時,編寫代碼以滾動UIScrollView的確切位置是什么?
這是我的代碼:
tableView:cellForRowAtIndexPath:的定義方法:
- (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;
}
這是tableView的定義:willDisplayCell:forRowAtIndexPath:方法
-(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;
}
}
實際滾動滾動視圖的方法
-(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];
}
您可以嘗試設置ScrollView的“ contentOffset”,而不是使用“ scrollRectToVisible”方法。
[cell.setsScrollView setContentOffset:CGPointMake(x, 0) animated:true];
x是您希望滾動視圖滾動到的點。 如果您將(0,0)設置為最前面。
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