CODEWITHSUNDEEP
iosobjective-ccheckboxuibutton
Taskinul Haque
Taskinul Haque

Reputation: 724

iOS - Handling Multiple Checkboxes

I need to use checkboxes (instead of UISwitch), as eventually these are going to be printed onto a sheet. I'm using the following code to initialize my check box 

checkbox1 = [[UIButton alloc] initWithFrame:CGRectMake(40, 226.5, 134, 20)];
[checkbox1 setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
[checkbox1 setBackgroundImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];
[checkbox1 addTarget:self action:@selector(checkboxSelected:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:checkbox1];

and the following code to handle the switch 

-(void)checkboxSelected:(id)sender {

if([checkbox1 isSelected]==YES) {
    [checkbox1 setSelected:NO];
} else {
    [checkbox1 setSelected:YES];
}

All this works perfectly fine . . . when I'm dealing with 1 checkbox . . . but if I want to have lets say 10 checkboxes on the same page - Do i need to create 10 separate methods ?

It just seems wasteful . . .. is there a better way to acheive this ?

Thank you for all your help

Upvotes: 1

Views: 3152

Answers (3)

Nitin Gohel
Nitin Gohel

Reputation: 49730

you have to manage evey Button check Box withing a single Method by using tag:-

Lat say you crating 10 Buttong with ForLoop 

for(i=0;i<10;i++)
{
checkbox1 = [[UIButton alloc] initWithFrame:CGRectMake(40, 226.5, 134, 20)];
[checkbox1 setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
[checkbox1 setBackgroundImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];
checkbox1.tag=i;
[checkbox1 setSelected:NO];
[checkbox1 addTarget:self action:@selector(checkboxSelected:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:checkbox1];
}

-(void)checkboxSelected:(UIButton*)sender {
     UIButton *btnPly = (UIButton *)sender;
    if([btnPly isSelected]==YES) {
        [btnPly setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
        [btnPly setSelected:NO];
    } else {
        [btnPly setSelected:YES];
        [btnPly setBackgroundImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];

    }
}

Upvotes: 1

Vladimir
Vladimir

Reputation: 170849

You can have the same method for all checkboxes. Sender parameter in your checkboxSelected method is the UIButton that triggered the action, so it will be tapped checkbox in your case:

-(void)checkboxSelected:(UIButton*)sender {
    sender.selected = !sender.selected;
}

Upvotes: 4

Agent Chocks.
Agent Chocks.

Reputation: 1312

try this one

for(i=0;i<10;i++)
{
HTN = [[UIButton alloc] initWithFrame:CGRectMake(40, 226.5, 134, 20)];
[HTN setBackgroundImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
[HTN setBackgroundImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];
HTN.tag=i;
[HTN addTarget:self action:@selector(checkboxSelect:) forControlEvents:UIControlEventTouchUpInside];
[self addSubview:checkbox1];
}

and to check whether selected or not 

-(void)checkboxSelect:(UIButton*)sender {
    sender.selected = !sender.selected;
}

Upvotes: 1

Related Questions