以编程方式创建的按钮单击以打开表视图或弹出窗口

Question

I have created a button programmatically in a UITableViewCell and I want it to open a new table view or popup when clicked. Please give me some tutorial or hint. Below is my code:

UIButton *button =[UIButton buttonWithType:UIButtonTypeCustom];
button.frame=CGRectMake(0,0,360,25);
[button addTarget:self action:@selector(dropDownClick) forControlEvents:UIControlEventTouchUpInside];

-(IBAction)dropDownClick
{
    //Here I know there should be some code but I am not getting what it should be since I am new to iPad/iPhone development
}

Answer 1

If you just want to show a popup when tapping the button, you can use UIAlertVIew

- (IBAction)dropDownClick {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Title of popup" 
                                                    message:@"Did this popup show?" 
                                                   delegate:self 
                                          cancelButtonTitle:@"Yes" 
                                          otherButtonTitles:nil];
    [alert addButtonWithTitle:@"No"];
    [alert show];
}

Answer 2

Here a sample to do it

//DISEGNO DELLE CELLE
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *CellIdentifier;

CellIdentifier = @"CellStorico";


UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];

    CGRect tRect1 = CGRectMake(0.0f, 3.0f, 768.0f, 40.0f);
    id title1 = [[UIButton alloc] initWithFrame:tRect3];
    [title1 addTarget:self action:@selector(ClickCheck:) forControlEvents:UIControlEventTouchUpInside];
    [title1 setTag:3];

    [cell addSubview:title1];
    [title1 release];

}




if ([[[Storico objectAtIndex:[indexPath row]] objectForKey:@"Selezionato"] isEqualToString:@"0"]) {
    [(UIButton *) [cell viewWithTag:3] setImage:[UIImage imageNamed:@"NoCheck.png"] forState:UIControlStateNormal];
    [(UIButton *) [cell viewWithTag:3] setImage:[UIImage imageNamed:@"NoCheck.png"] forState:UIControlStateHighlighted];
    [(UIButton *) [cell viewWithTag:3] setImage:[UIImage imageNamed:@"NoCheck.png"] forState:UIControlStateSelected];        
} else {
    [(UIButton *) [cell viewWithTag:3] setImage:[UIImage imageNamed:@"Check.png"] forState:UIControlStateNormal];
    [(UIButton *) [cell viewWithTag:3] setImage:[UIImage imageNamed:@"Check.png"] forState:UIControlStateHighlighted];
    [(UIButton *) [cell viewWithTag:3] setImage:[UIImage imageNamed:@"Check.png"] forState:UIControlStateSelected];
}   



return cell;
}

Click Management

-(void)ClickCheck:(id)sender{

//Ex. Load a New View
FrmScadenzeGenerali *SchermataScadenzeGenerali=[[FrmScadenzeGenerali alloc] initWithNibName:@"FrmScadenzeGenerali" bundle:nil];
[[self navigationController] pushViewController:SchermataScadenzeGenerali animated:YES];
[SchermataScadenzeGenerali release];


//Ex. PopUp a View
[self.view insertSubview:[TabTestata view] atIndex:0];

//Show a Message
UIAlertView *Alert = [[UIAlertView alloc] initWithTitle:@"Attenzione!" message:@"Error Text Message To Show!" delegate:self cancelButtonTitle:@"Ok" otherButtonTitles:nil];
    [Alert show];
    [Alert release];
}

Answer 3

I assume you are using a UINavigationController with your UITableView .

If so, you can do try this to make it open a new table view:

• Make a new class which is a subclass of UITableViewController . Make sure the checkbox named "With XIB for user interface" is checked. Give it a name, ie "MyTableViewController".
• Open the implementation file (the one ending in .m) of your class where you have your dropDownClick method, and import your new class with #import "MyTableViewController.h" . Do this at the top of your class (.m file).
• Edit your dropDownClick method to the following lines:

---

-(IBAction)dropDownClick
{
    MyTableViewController *vc = [[MyTableViewController alloc] initWithNibName:@"MyTableViewController"]; // Loads a .xib file called "MyTableViewController.xib"
    [self.navigationController pushViewController:vc animated:YES]; // This is where the swapping happens.
    [vc release]; // Remember to do this if your app does not use ARC.
}

You could also do this without using a .xib, but then it would be a bit different.