CODEWITHSUNDEEP
objective-ciosuitableviewuibutton
Ollie
Ollie

Reputation: 196

UIButton not clickable after UITableView scrolled

I have a UITableView which is populated with some cells. I have created a UIButton using the following snippet, it is placed next to one of the section headers.

UIButton *addButton = [UIButton buttonWithType:UIButtonTypeCustom];
[addButton addTarget:self action:@selector(addButtonPressed) forControlEvents:UIControlEventTouchUpInside];
[addButton setBackgroundImage:[UIImage imageNamed:@"add.png"] forState:UIControlStateNormal];
addButton.backgroundColor = [UIColor clearColor];
addButton.frame = CGRectMake(270, 150, 29, 29);

The button is placed and works correctly. However, after the view is scrolled (even slightly - like 1 pixel), the button works once and then ceases to respond. When it fails to respond the action for when it is clicked is not triggered and the button doesn't give the 'depressed' shadow. The rest of the application runs as normal and it does not crash.

This seems odd because after I scroll the button is clickable once more before it stops working. The button is used to insert rows into the table, so after it is pressed there is an extra row, possibly this is breaking the bounds or something?

Button pressed function:

- (void)addButtonPressed {
    self.addClientTable.editing = YES;

    // First figure out how many sections there are
    NSInteger lastSectionIndex = [self numberOfSectionsInTableView:self.addClientTable] - 1;

    // Then grab the number of rows in the last section
    NSInteger lastRowIndex = [self.addClientTable numberOfRowsInSection:lastSectionIndex];

    [self.addClientTable insertRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:lastRowIndex inSection:lastSectionIndex]] withRowAnimation:UITableViewRowAnimationRight];

    self.addClientTable.editing = NO;
}

Where addClientTable is the UITableView.

What could cause a UIButton to stop responding to clicks and where in my scenario would this be caused by?

Upvotes: 1

Views: 849

Answers (1)

ggrana
ggrana

Reputation: 2335

I am almost sure that your problem is that your button is out of it superview, and you are not using the clip subviews option in your view that contains the button, or in one of it superviews.

Set to true all the views property clip subviews and see if it appears your button. (We expect that the button disappear)

If you provide more code I can try to help you to solve this problem.

-

Reading again your question, another probable problem to it is that you have one view in front of your button. You can test it changing the background of your view, or something like that.

Upvotes: 3

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