(iOS)how to make the button and label working? - uibutton

Question

please take a look my code
-(IBAction)clickButton1:(id)sender{
label1.hidden=NO;
button1.userInteractionEnabled = NO;
NSString *sql = [NSString stringWithFormat:#"SELECT * FROM table order by id asc"];
NSArray *all = [datebase selectData:sql columns:71];
index = [all count]-1;
if (index < 0) {
NSLog(#"no");
}
else{
for(i=0;i<=index;i++){
NSArray *row = [all objectAtIndex:i];
NSString *serid = [row objectAtIndex:0];
NSString *logtime = [row objectAtIndex:1];
NSString *post =[NSString stringWithFormat:#"?id=%#&logtime=%#",id,ttime];
NSString *searchTerm = [post stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
NSString *hostStr = #"http://www.theurl.com/sy.php";
hostStr = [hostStr stringByAppendingString:searchTerm];
NSData *dataURL = [NSData dataWithContentsOfURL: [NSURL URLWithString: hostStr]];
NSString *serverOutput = [[NSString alloc] initWithData:dataURL encoding: NSUTF8StringEncoding];
if([serverOutput isEqualToString:#"1"]){
if (i==index) {
NSLog(#"success");
}
}
else {
NSLog(#"error");
}
}
}
}
i use the code,and clicked the button, but the label is still hidden, and so to the button1, but if i move the code only left
-(IBAction)clickButton1:(id)sender{
label1.hidden=NO;
button1.userInteractionEnabled = NO;
}
ok they work, so what's wrong with my code? can anybody help me? many thanks

Answer 1

USE NSLog(#"bla bla bla") for trace, like this:
-(IBAction)clickButton1:(id)sender {
NSLog(#"bla bla bla")
label1.hidden=NO;
button1.userInteractionEnabled = NO;
}
to check connection with label1 and button1 in IB. (outlets)