CODEWITHSUNDEEP
iphone
arachide
arachide

Reputation: 8066

access the dynamic buttons with tag

Hello I have some codes to create dynamic button as below:

- (void)viewDidLoad {

    for (int i = 0; i < 9; i++)   
        for (int j = 0; j < 8; j++) {  
            forControlEvents:UIControlEventTouchDown]; 
            UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
            button.frame = CGRectMake(10+i*34 , 130+j*30, 30 , 20 );
            [button setTitle:@"00" forState:  UIControlStateNormal];
            [button addTarget:self action:@selector(tapped:) forControlEvents:UIControlEventTouchUpInside];
            [self.view addSubview:button];
           button.tag = i;  
        } 
}

I hope to access one dynamic button with tag

How can I do

Welcome any comment.

Thanks interdev

Upvotes: 0

Views: 1373

Answers (3)

Colin Gislason
Colin Gislason

Reputation: 5589

As rekle stated, your views will be assigned the same tag. Use his suggestion to assign the tag (i*100)+j. Then to retrieve those views from another method in the same class, you can use [UIView viewWithTag:] as follows:

for (int i = 0; i < 9; i++)   
    for (int j = 0; j < 8; j++) {
        UIButton *button = [self.view viewWithTag:(i*100)+j];
        // Do more stuff here...
    }
}

Here are the Apple docs on viewWithTag.

Upvotes: 1

rekle
rekle

Reputation: 2375

Another problem you have is that you are setting every button created in the 'j' loop to the tag 'i'. This means you will 8 buttons with the same tag ID. You need to do something different with the tag based on the 'i' and 'j' indices. Maybe something like:

button.tag = (i*100)+j;

That way you can extract the 'i' and 'j' indices from the tag.

Upvotes: 1

ennuikiller
ennuikiller

Reputation: 46965

you have to have a check like the following:

if (button.tag == 1) {
.....do something
}

or a switch statement:

switch (button.tag)
 {
     case 1:
          statements
          break;

     case 2:
          statements
          break;

    //more case statements

     default:
          statements
          break;
 }

Upvotes: 0

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