how to add programmatically drop down menu in navigation bar? - iphone

Question

can anyone tell. how to create drop down menu in iPhone,and i want add drop down menu in navigateion bar (my concept is sorting(filter) so i want three buttons in menu name,title,description .....)

Answer 1

You can use a UIPopoverController for iPhone.
It's available here.
In the popover you can add a UIPickerView and there's the drop-down.
Basically , on iPhone you can use a UITableView or UIPickerView to simulate a drop down.
And to place it in a nice container you can use the above mentioned popover.

Answer 2

There is no such a component in iOS, so you need to create it by yourself.
You can do that by adding a UIView under your button, and animate it.
Something like...
[self.view addSubview:myMenu];
[myMenu setFrame:CGRectMake(100,30,150,0)];
[UIView animateWithDuration:0.4 animation:^{
[myMenu setFrame:CGRectMake(100,30,150,200)];
}];

Answer 3

//on Drop down button click
-(IBAction)btnDropdownPressed:(id)sender{
if (![popoverController isPopoverVisible])
{
PopOverViewController *attShow=[[PopOverViewController alloc]initWithNibName:#"PopOverViewController" bundle:nil];
NSLog(#"arrFiles==%#",arrFiles);
attShow.arrFiles=arrFiles;
{
popoverController=[[[UIPopoverController alloc]initWithContentViewController:attShow] retain];
[popoverController setPopoverContentSize:CGSizeMake(500,250)];
[popoverController presentPopoverFromRect:CGRectMake(0,0, 500, 30) inView:btnMore permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
}else {
[popoverController dismissPopoverAnimated:YES];
}
}
PopOverViewController.h
{
IBOutlet UITableView *tblView;
NSArray *arrFiles;
}
#property(nonatomic,retain)NSArray *arrFiles;
PopOverViewController.m
- (NSInteger)tableView:(UITableView *)aTableView numberOfRowsInSection:(NSInteger)section
{
return [self.arrFiles count];
}
-(CGFloat)tableView:(UITableView *)aTableView heightForRowAtIndexPath:(NSIndexPath *)indexPath
{
return 40;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = #"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}
cell.textLabel.text=[self.arrFiles objectAtIndex:indexPath.row];
cell.textLabel.font=[UIFont fontWithName:#"Arial" size:14.0f];
cell.selectionStyle=UITableViewCellSelectionStyleNone;
return cell;
}