Programmatically create UITextFields - objective-c

Question

I can't figure out what is wrong here. Please see coments above NSLog function.
-(void)loadView
{
......
int x_position = 10;
for (self.x = 0; self.x < 3; self.x++)
{
self.textField = [[UITextField alloc] initWithFrame:CGRectMake(10, x_position, 300, 25)];
self.textField.tag = self.x;
// Output 0, 1, 2
NSLog(#"%d", self.x);
x_position += 40;
[self.view addSubview:self.textField];
}
UIButton *btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
[btn addTarget:self action:#selector(showNames) forControlEvents:UIControlEventTouchDown];
[btn setTitle:#"Remove from view" forState:UIControlStateNormal];
btn.frame = CGRectMake(0, x_position + 30, 210, 50);
[self.view addSubview:btn];
[self.textField release];
[self.view release];
}
-(void)showNames
{
while (self.x > 0) {
self.x--;
// output 2, 1, 0
NSLog(#"%d", self.x);
NSLog(#"%#", tmp);
}
}
Here is console log
<UITextField: 0x4b39410; frame = (10 90; 300 25); text = 'Ad'; clipsToBounds = YES; opaque = NO; tag = 2; layer = <CALayer: 0x4b38c30>>
<UITextField: 0x4e22320; frame = (10 50; 300 25); text = 'Asd'; clipsToBounds = YES; opaque = NO; tag = 1; layer = <CALayer: 0x4e0a4c0>>
<UIView: 0x4b32330; frame = (0 20; 320 460); layer = <CALayer: 0x4b329a0>>
I expect object at tag 0 to be UITextField, not UIView.
What is wrong here ?

Answer 1

Every view's tag defaults to zero, so your main UIView will have a tag of zero, and so will any other view where you didn't explicitly set the tag.
I suggest using an offset value for your tags, so you can make them all unique. For example:
#define TEXTFIELD_TAG_OFFSET 100
for (self.x = 0; self.x < 3; self.x++)
{
self.textField = [[UITextField alloc] initWithFrame:CGRectMake(10, x_position, 300, 25)];
self.textField.tag = self.x + TEXTFIELD_TAG_OFFSET;
// Output 0, 1, 2
NSLog(#"%d", self.x);
x_position += 40;
[self.view addSubview:self.textField];
}
Now you can reference the Nth textfield with the tag number TEXTFIELD_TAG_OFFSET + N. That way your textfields will all have unique tags.