Question

I’m having trouble looping through a set of dynamically created UITextFields and storing those values as a double to be added to an array later on. I’m still pretty new to obj-c programming so bear with me if this question seems trivial. Thanks. This is what I have so far.

NSMutableArray *textFieldCashArray = [[NSMutableArray alloc] init];
double textFieldCash;
for (int y=0; y<25; y++) {       
    UITextField *myLabel = (UITextField *)[self.view viewWithTag:y];            
    textFieldCash =  [myLabel.text doubleValue];
    [textFieldCashArray addObject:[NSNumber numberWithDouble:textFieldCash]];    
}

P.S and here is the error message I’m getting

Pro[962:b303] -[UIControl text]: unrecognized selector sent to instance 0x680f850
2012-04-01 16:05:46.305 iFinance Pro[962:b303] *** Terminating app due to uncaught      exception 'NSInvalidArgumentException', reason: '-[UIControl text]: unrecognized selector sent to instance 0x680f850'
*** Call stack at first throw:

Answer 1

I think what’s going on here is that the loop variable is being used as the tag, and the loop starts at zero. viewWithTag will answer either the receiver or one of it’s subviews with a given tag, so if the view controller’s main view has tag==0 (which it probably does), your first text request is being sent to that top-level view.

Try setting the text field tags to some non-zero value, starting at SOME_OFFSET. Then in your loop:

for (y=0; y<25; y++) {
     UITextField *myLabel = (UITextField *)[self.view viewWithTag:y+SOME_OFFSET]; 
     // ...
}