How to open and close tableView on a button click? - ios

Question

2I'm working on dropDowns, i'm creating buttons and dropdown tableView dynamically. When i click first button last tableView was opened. But i want to open specific tableView (at a time i want to open only one dropdown).
float y = 0;
float x = (self.answersView.frame.size.width/2)+175;
float Iy = 0;
float Ix = 675;
float Tx = (self.answersView.frame.size.width/2)+175;
float Ty = 0;
for (int i=0; i<self.radioBtnTagArr.count; i++) {
self.dropdownBtn = [UIButton buttonWithType:UIButtonTypeSystem];
self.dropdownBtn.frame = CGRectMake(x, y+30, (self.answersView.frame.size.width/2)-200, 50);
[self.dropdownBtn setTitle:#"0" forState:UIControlStateNormal];
self.dropdownBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
[self.dropdownBtn setTitleColor:[UIColor colorWithRed:24/255.0 green:56/255.0 blue:131/255.0 alpha:1] forState:UIControlStateNormal];
self.dropdownBtn.titleLabel.font = [UIFont systemFontOfSize:25];
[self.dropdownBtn addTarget:self action:#selector(dropdownBtnTapMethod:) forControlEvents:UIControlEventTouchUpInside];
self.dropdownBtn.backgroundColor = [UIColor lightGrayColor];
[self.scrollView addSubview:self.dropdownBtn];
self.dropdownBtn.tag = [[self.btnTagArr objectAtIndex:i] intValue];
y = y+70;
self.dropdownImageView = [[UIImageView alloc]initWithFrame:CGRectMake(Ix, Iy+50, 20, 10)];
self.dropdownImageView.image = [UIImage imageNamed:#"dropdown.png"];
[self.answersView addSubview:self.dropdownImageView];
Iy = Iy+70;
self.dropdownTableView = [[UITableView alloc]initWithFrame:CGRectMake(Tx, Ty+80, (self.answersView.frame.size.width/2)-200, 50) style:UITableViewStylePlain];
self.content = #[ #"Monday", #"Tuesday", #"Wednesday",#"Thursday",#"Friday",#"Saturday",#"Sunday"];
self.dropdownTableView.delegate = self;
self.dropdownTableView.dataSource = self;
[self.answersView addSubview:self.dropdownTableView];
Ty = Ty+70;
self.dropdownTableView.hidden = YES;
}
//The event handling method
- (void)dropdownBtnTapMethod:(UIButton *) sender {
if (self.dropdownTableView.hidden == YES) {
self.dropdownTableView.hidden = NO;
} else {
self.dropdownTableView.hidden = YES;
}
}
And how to set table view height dynamically.

Answer 1

Try this :
NSMutableArray *arrTableview; // make global
In ViewDidLoad
arrTableview = [NSMutableArray New];
Change in following method
for (int i=0; i<self.radioBtnTagArr.count; i++) {
self.dropdownBtn = [UIButton buttonWithType:UIButtonTypeSystem];
self.dropdownBtn.tag = i; // add this line
self.dropdownBtn.frame = CGRectMake(x, y+30, (self.answersView.frame.size.width/2)-200, 50);
[self.dropdownBtn setTitle:#"0" forState:UIControlStateNormal];
self.dropdownBtn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
[self.dropdownBtn setTitleColor:[UIColor colorWithRed:24/255.0 green:56/255.0 blue:131/255.0 alpha:1] forState:UIControlStateNormal];
self.dropdownBtn.titleLabel.font = [UIFont systemFontOfSize:25];
[self.dropdownBtn addTarget:self action:#selector(dropdownBtnTapMethod:) forControlEvents:UIControlEventTouchUpInside];
self.dropdownBtn.backgroundColor = [UIColor lightGrayColor];
[self.scrollView addSubview:self.dropdownBtn];
//self.dropdownBtn.tag = [[self.btnTagArr objectAtIndex:i] intValue]; // This line commented.
y = y+70;
self.dropdownImageView = [[UIImageView alloc]initWithFrame:CGRectMake(Ix, Iy+50, 20, 10)];
self.dropdownImageView.image = [UIImage imageNamed:#"dropdown.png"];
[self.answersView addSubview:self.dropdownImageView];
Iy = Iy+70;
self.dropdownTableView = [[UITableView alloc]initWithFrame:CGRectMake(Tx, Ty+80, (self.answersView.frame.size.width/2)-200, 50) style:UITableViewStylePlain];
self.content = #[ #"Monday", #"Tuesday", #"Wednesday",#"Thursday",#"Friday",#"Saturday",#"Sunday"];
self.dropdownTableView.delegate = self;
self.dropdownTableView.dataSource = self;
[self.answersView addSubview:self.dropdownTableView];
[arrTableview addObject :self.dropdownTableView];
Ty = Ty+70;
self.dropdownTableView.hidden = YES;
}
Selector
- (void)dropdownBtnTapMethod:(UIButton *) sender {
UITableView *tableView =[arrTableview objectAtIndex:sender.tag]
if (tableView.hidden == YES) {
tableView.hidden = NO;
} else {
tableView.hidden = YES;
}
}