UISwitch not working if dragged

Question

I have a UISwitch added as a contentview inside a UITableViewCell.

The control works only if tapped, but if I try to drag it to the left or the right, the selector function is not called.

Any help?

kindly post the code that you tried, which help to answer accordingly. — iLearner, May 06 '14 at 13:31
UISwitch doesn't send change events when dragging, only when releasing its handle after a drag that would toggle its state. — Cyrille, May 06 '14 at 13:54

score 2 · Answer 1 · answered May 12 '14 at 09:38

switch_Bool = [[UISwitch alloc]initWithFrame:CGRectMake(0,0,20,20)];
[switch_Bool addTarget:self action:@selector(actionBoolSwitch:) forControlEvents:UIControlEventTouchUpInside];
[cell.contentView addSubview:switch_Bool];

It works only if i tap my UISwitch, but if i drag it, the function actionBoolSwitch is not called...

score 1 · Answer 2 · edited May 23 '17 at 12:30

What I understood from your question is, you are trying to add a UiSwitch to table view cell.

The very first thing you need to do as a standard practice is to create a subclass of UITableViewCell, add all the components you need and then use it in cellForRowAtIndexPath.

take a look at below sample code.

  //inside your cell creation block


    UISwitch *mySwitch = [[UISwitch alloc] initWithFrame:CGRectMake(add coordinates here...)];
    [mySwitch addTarget:self action:@selector(changeSwitch:) forControlEvents:UIControlEventValueChanged];
    mySwitch.tag = indexpath.row;
    [cell.contentview addSubview:mySwitch];

  }

  - (void)changeSwitch:(id)sender{

   if([sender isOn])
    {
      NSLog(@"Switch is ON");
    } 
   else
   {
    NSLog(@"Switch is OFF");
   }

 }

Also take a look at this link

score 1 · Answer 3 · answered Nov 28 '16 at 13:28

1

You may be using UIControlEventTouchUpInside event. Use UIControlEventValueChanged instead, so your action is called every time the UISwitch value changes, no matter what event was the trigger.

answered Nov 28 '16 at 13:28

Alvaro

1,188
13
21

score -2 · Answer 4 · answered May 06 '14 at 13:52

Try this.

To find the cell that holds the switch

UISwitch *switchInCell = (UISwitch *)sender;
UITableViewCell * cell = (UITableViewCell*) swithInCell.superview;

To find the indexpath of that cell

NSIndexPath * indexpath = [myTableView indexPathForCell:cell]

 - (void) switchChanged:(id)sender {

         UISwitch *switchInCell = (UISwitch *)sender;
         UITableViewCell * cell = (UITableViewCell*) swithInCell.superview;
         NSIndexPath * indexpath = [myTableView indexPathForCell:cell]
         NSString *strCatID =[[NSString alloc]init];
         strCatID = [self.catIDs objectAtIndex:indexpath];
         NSLog( @"The switch for item %@ is %@",StrCatID, switchInCell.on ? @"ON" : @"OFF" );
        }

UISwitch not working if dragged

4 Answers4