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how to use if else conditon on button press based on image of button?
if([UIImage imageNamed:@"checkbox_ticked.png"])
    {
        isActiveStr=[arrayPickerData objectAtIndex:17];
        NSLog(@" is active value is %@ ",isActiveStr);
        isActiveStr=nil;

    }
    else
    {
        NSLog(@"no vlaue send");
        isActiveStr=[[NSMutableString alloc]initWithString:@"1"];
        NSLog(@" is active value %@",isActiveStr);
    }

BOOL checked;

- (void)onButtonTapped:(UIButton *)button {

    checked = !checked;
    ...
}

if (checked) {

    // The button is checked

} else {

     // The button is not checked
}

if ([[myButton imageForState:UIControlStateNormal] isEqual:[UIImage    imageNamed:@"checkbox_ticked.png"]]) {
...

if(!btnCheckbox.selected)
    {
        [btnCheckbox setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"check-out_h" ofType:@"png"]] forState:UIControlStateNormal];
        btnCheckbox.selected=YES;
    }
    else {
        [btnCheckbox setImage:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"check-out" ofType:@"png"]] forState:UIControlStateNormal];
        btnCheckbox.selected=NO;
    }

-(void)checkBoxIsHideNationWideClicked
{
    NSLog(@"nation wide button clicked");

    mybtn.selected=!mybtn.selected;
    defaultsCheckBox=[NSUserDefaults standardUserDefaults];

    if (mybtn.selected)
    {
        [defaultsCheckBox setValue:@"One" forKey:@"CheckBox"];

        NSLog(@" is active value is %@ is fetched succesfuly",hideNationWideStr);
        [CommonVar setHideNationwideData:hideNationWideStr];
        NSLog(@" is active value send to cmmon class %@ sent succesfuly",hideNationWideStr);
    }
    else
    {
        [defaultsCheckBox setValue:@"Two" forKey:@"CheckBox"];
        NSLog(@"no vlaue send");
        hideNationWideStr=[[NSMutableString alloc]initWithString:@"1"];
        [CommonVar setHideNationwideData:hideNationWideStr];
        NSLog(@" is active value send to cmmon class %@ sent succesfuly",hideNationWideStr);
    }
}