How to create checkbox in iOS?

I have taken two custom buttons and one method, to set their check and uncheck

In viewdidload() i have written like this..

[checkbox_01 setImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
[checkbox_02 setImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
isChecked_01 = NO; //declared as boolean to change check and uncheck for button one
isChecked_02 = NO; //declared as boolean to change check and uncheck for button two

And in method

-(IBAction)checkboxOnClick:(UIButton *)sender {
    if (sender.tag == 1) {
        if (isChecked_01 == NO) {
            [checkbox_01 setImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateNormal];
            isChecked_01 = YES;
        }
        else
        {
            [checkbox_01 setImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
            isChecked_01 = NO;
        }
    }

    if (sender.tag == 2) {
        if (isChecked_02 == NO) {
            [checkbox_02 setImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateNormal];
            isChecked_02 = YES;
        }
        else
        {
            [checkbox_02 setImage:[UIImage imageNamed:@"unchecked.png"] forState:UIControlStateNormal];
            isChecked_02 = NO;
        }
    }
}

is there any other way to create check boxes in ios..? i have taken each checkbox with one isChecked boolean value for it.. is there posibilities to use only one boolean for entire check list.....