[英]How to scroll UIScrollView programmatically which is a subview of the custom UITableViewCell?
I could not figure out why the scroll view is not being scrolled whereas the current_set variable is getting increased.What is the exact position to write the code to scroll the UIScrollView when it is a subview of the UITableView? 我不知道为什么在增大current_set变量的情况下不能滚动滚动视图。当它是UITableView的子视图时,编写代码以滚动UIScrollView的确切位置是什么?
Here is my code: 这是我的代码:
The definition for tableView:cellForRowAtIndexPath: method:
tableView:cellForRowAtIndexPath:的定义方法:
- (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;
}
Here is the definition for tableView: willDisplayCell:forRowAtIndexPath: method
这是tableView的定义
: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;
}
}
The method which is actually scrolling the scroll view 实际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];
}
Instead of using the 'scrollRectToVisible' method, you may try to set 'contentOffset' of the ScrollView. 您可以尝试设置ScrollView的“ contentOffset”,而不是使用“ scrollRectToVisible”方法。
[cell.setsScrollView setContentOffset:CGPointMake(x, 0) animated:true];
x is the point you want the scrollview scroll to. x是您希望滚动视图滚动到的点。 If you set to (0,0) which is the front.
如果您将(0,0)设置为最前面。
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