How to select multiple rows from UIPickerView ios - ios

Question

I want to select more then one rows from UIPickerView and place in UITextField . Language used in my project is objective c . I can't understand logic

Answer 1

As much I have understood what you want to achieve is you want to select more than one item from a list and show it in a UITextField. For that you can do this:
At first Drag and drop a UITableView into your storyboard and connect datasource and delegates.
Drag an UITableViewCell into your tableview and give the reuserIdentifier as TableCell.
Drag an UILabel and an UIImageView onto your tableCell. Give tags to your label and imageView as 888 and 999. Make the imageview like a small box and place it just beside your label.
Take an array for showing the list you want to show user to select items and populate the UITableView with it.
Take another array in which you want to store the selected items.
Just under your implementation declare two arrays like this:
#implementation ViewController {
NSMutableArray *arrItems;
NSMutableArray *arrSelectedItems;
}
Now in your viewDidLoad populate your item array.
- (void)viewDidLoad {
[super viewDidLoad];
arrItems = [[NSMutableArray alloc]init];
for (int i = 0; i < 10; i++) {
NSMutableDictionary *dict = [[NSMutableDictionary alloc]init];
[dict setObject:[NSString stringWithFormat:#"Item%d",i+1] forKey:#"itemName"];
[dict setObject:#"0" forKey:#"isSelected"];
[arrItems addObject:dict]
}
arrSelectedItems = [[NSMutableArray alloc]init];
}
Now implement the DataSource and Delegate methods of UITableView.
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
return arrItems.count;
}
-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:#"TableCell"];
NSMutableDictionary *dict = [arrItems objectAtIndex:indexPath.row];
UILabel *lblItemName = (UILabel *)[cell.contentView viewWithTag:888];
lblItemName.text = [dict valueForKey:#"itemName"];
UIImageView *imageView = (UIImageView *)[cell.contentView viewWithTag:999];
if ([[dict valueForKey:#"isSelected"]isEqualToString:#"0"]) {
imageView.backgroundColor = [UIColor redColor];
} else {
imageView.backgroundColor = [UIColor greenColor];
}
return cell;
}
Now implement the multiple selection login in didSelectRowAtIndexPath like below:
-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
NSMutableDictionary *dict = [arr objectAtIndex:indexPath.row];
if ([arrSelectedItems containsObject:dict]) {
[arrSelectedItems removeObject:dict];
} else {
[arrSelectedItems addObject:dict];
}
if ([[dict valueForKey:#"isSelected"]isEqualToString:#"0"]) {
[dict setObject:#"1" forKey:#"isSelected"];
} else {
[dict setObject:#"0" forKey:#"isSelected"];
}
[tableView reloadRowsAtIndexPaths:#[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
//Here you can show the selected Objects in `UITextField`
self.yourTexField.text = [arrSelectedItems componentsJoinedByString:#","];
}
P.S: I have written the total code here, haven't tested it, so if any errors occurs feel free to leave a comment below, I will be there to solve it.
I think it will help you.

Answer 2

you can create a new tableview with each row as a language, then present it when user respond to textfield.
You can look here for some starter code on how to implement the multiple selection logic.
A textfield has a property call inputview, you can try replacing that with tableview.