Events when clicks on UITableViewCell in objective C? - ios

Question

I encountered an issue in my project as below:
I wrote a class that is subclass of UIView with:
1 - a button
2 - a table view
3 - a textfield
I've created an object of that class and add the object to an view of uiviewcontroller. When I click on the button, make the table view appear with a list of all countries and click on a cell of table view, the textfield will get cell's value. I wanna detect events when I touch on a cell of tableview. How can I do that? Please help me, Thank in advance.
P/S: tableview is subView of contentView. Hierarchy as follow:
ViewController - ScrollView - contentView -(View1, View2...)

Answer 1

Is this what you're trying to do?
You didn't give codes, or something.. So, this is just my assumption of what you're trying.. hmm..
Please give us more details... edit your question if necessary..
//viewController.h
#interface viewController : UIViewController
#property (nonatomic) NSMutableArray *selectedIndexs;
// use this array as your dataSource for the secondTableView (popup tableView?)
#end
//viewController.m
#implementation viewController
// codes..
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
/*
you need to store the countries indexPath to cell the name/details
in this example i will just get the `.textLabel.text`
*/
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath/*current selected indexPath*/];
if ([self.selectedIndexs containsObject:cell.textLabel.text])
{
// [self.selectedIndexs removeObject:cell.textLabel.text]; ]> delete if already in the array
// return; ]> if you dont want to remove the object just return..
}
else
[self.selectedIndexs addObject:cell.textLabel.text]; // add the country if not exist in the array
}
- (void)showSelectedCountries:(UIButton *)sender //this is the number 1 from the image (Button)
{
UIView *customViewForSelected = [[UIView alloc] init];
// then if you have declared a property for `dataSource` inside your 'customViewForSelected' just:
customViewForSelected.yourSelectedsDataSource = selectedIndexs;
// then show the view with the table inside which contains only the table.. correct?
[self.view addSubview:customViewForSelected]; // i just added as subview because i dont know how you call it..
}
#end
Hope, you find this helpful.. Cheers..

Answer 2

I created a class: DropdownListViewCountries is subclass of UIView and include a button, a text field and a tableview.
#interface DropdownListViewCountries : UIView<UITextFieldDelegate, UITableViewDelegate>
.In #implementation DropdownListViewCountries, I implemented didSelectRowAtIndexPath
and then I created class: IndividualPersonalData is subview of UIViewController. This class contains a progress view bar.
And then I created an object of DropdownListViewCountries and add to IndividualPersonalData.
How to I touch on a cell of tableview to change progress view value?

Answer 3

UITableView had delegate protocol, and for your needs, you only have to implement
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
You will know where you tap by indexPath, so you know the location, then you can do whatever you want.
If you want to get the corresponding cell, use
- (UITableViewCell *)cellForRowAtIndexPath:(NSIndexPath *)indexPath
Simply pass indexPath from didSelectRowAtIndexPath to cellForRowAtIndexPath

Answer 4

Like people said in the comments, all you need is in the delegate and data source. If you're doing it all programmatically you need to add many things to your code such as <UITableViewDelegate, UITableViewDataSource> and also call them on viewDidLoad. Then you need to implement some methods. Apple has a vast documentation on all classes and methods, take a look at them. You need the didSelectRowAtIndexPath.
Hope I could help

Answer 5

Thanks you all for your help. Now for my purpose I found below code to detect events:
[self.firstDropdownListView.countriesTextField addObserver:self forKeyPath:#"text" options:0 context:nil];
- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
if([keyPath isEqualToString:#"text"] && object == self.firstDropdownListView.countriesTextField)
{
// text has changed
LogDebug(#"HELLO WORLD");
}
}