Access the contents of a row in UITableView - iphone

Question

So, I am creating a login screen with UITableView. There are two textfields for email and password. When the user presses 'Login' button, I want to store the contents of those two textfields in two NSStrings. How do I do that? Here is the code for cellForRowAtIndexPath:
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *kCellIdentifier = #"Cell";
UITextField *tf = [[UITextField alloc] init];
UITableViewCell *cell = [self.tView dequeueReusableCellWithIdentifier:kCellIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:kCellIdentifier];
cell.accessoryType = UITableViewCellAccessoryNone;
if ([indexPath section] == 0) {
UITextField *playerTextField = [[UITextField alloc] initWithFrame:CGRectMake(10, 10, 250, 30)];
playerTextField.adjustsFontSizeToFitWidth = YES;
playerTextField.textColor = [UIColor blackColor];
if ([indexPath row] == 0) {
playerTextField.placeholder = #"Email";
playerTextField.keyboardType = UIKeyboardTypeEmailAddress;
playerTextField.returnKeyType = UIReturnKeyNext;
tf = jidField = [self makeTextField:#"" placeholder:playerTextField.placeholder];
[cell addSubview:jidField];
}
else {
playerTextField.placeholder = #"Password";
playerTextField.keyboardType = UIKeyboardTypeDefault;
playerTextField.returnKeyType = UIReturnKeyDone;
playerTextField.secureTextEntry = YES;
}
//playerTextField.backgroundColor = [UIColor whiteColor];
playerTextField.autocorrectionType = UITextAutocorrectionTypeNo; // no auto correction support
playerTextField.autocapitalizationType = UITextAutocapitalizationTypeNone; // no auto capitalization support
playerTextField.textAlignment = NSTextAlignmentLeft;
// playerTextField.tag = 0;
//playerTextField.delegate = self;
playerTextField.clearButtonMode = YES; // no clear 'x' button to the right
[playerTextField setEnabled: YES];
[cell addSubview:playerTextField];
}
}
return cell;
}

Answer 1

In cellForRowAtIndexPath, set tag for userid and password field and retrieve the textfields with its tag identifier. Please find following implementation of loginAction method.
- (void)loginAction:(id)sender {
NSIndexPath *userIdRow = [NSIndexPath indexPathForRow:0 inSection:0];
NSIndexPath *passwordFieldRow = [NSIndexPath indexPathForRow:1 inSection:0];
UITableViewCell *userIdTableCell = (UITableViewCell *)[tableview cellForRowAtIndexPath:userIdRow];
UITableViewCell *passwordFieldTableCell = (UITableViewCell *)[tableview cellForRowAtIndexPath:userIdRow];
UITextField *userIDField = (UITextField *)[userIdTableCell viewWithTag:1001];
UITextField *passwordField = (UITextField *)[passwordFieldTableCell viewWithTag:1002];
// You can store now text to either your instance variables or properties in the following statements
NSLog(#"%#", userIDField.text];
NSLog(#"%#", passwordField.text];
}
In cellForRowAtIndexPath, you have to tag your's textfields
if ([indexPath row] == 0) {
playerTextField.tag = 1001;
} else {
playerTextField.tag = 1002;
}

Answer 2

Just like Tarek said, this is how you do it.
In your *.h file
#interface v1ViewController : UITableViewController
{
UITextField IBOutlet *playerEmailTxt;
UITextField IBOutlet *playerPassword;
}
#property (nonatomic, retain) UITextField IBOutlet *playerEmailTxt;
#property (nonatomic, retain) UITextField IBOutlet *playerPassword;
In your *.m file
...
#synthesize playerEmailTxt;
#synthesize playerPassword;
...
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
static NSString *kCellIdentifier = #"Cell";
UITableViewCell *cell = [self.tView dequeueReusableCellWithIdentifier:kCellIdentifier];
if (cell == nil)
{
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:kCellIdentifier];
cell.accessoryType = UITableViewCellAccessoryNone;
if (indexPath.section == 1)
{
if (indexPath.row == 0)
{
playerEmailTxt = [[UITextField alloc] initWithFrame:CGRectMake(10, 10, 250, 30)];
playerEmailTxt.adjustsFontSizeToFitWidth = YES;
playerEmailTxt.textColor = [UIColor blackColor];
playerEmailTxt.placeholder = #"Email";
playerEmailTxt.keyboardType = UIKeyboardTypeEmailAddress;
playerEmailTxt.returnKeyType = UIReturnKeyNext;
[cell addSubview:playerEmailTxt];
}
else if (indexPath.row == 1)
{
playerPassword = [[UITextField alloc] initWithFrame:CGRectMake(10, 10, 250, 30)];
playerPassword.adjustsFontSizeToFitWidth = YES;
playerPassword.textColor = [UIColor blackColor];
playerPassword.placeholder = #"Password";
playerPassword.keyboardType = UIKeyboardTypeDefault;
playerPassword.returnKeyType = UIReturnKeyDone;
playerPassword.secureTextEntry = YES;
[cell addSubview:playerPassword];
}
}
return cell;
}
Now add your login action
-(IBAction)LoginAction
{
NSMutableString *usrEmailStr = [NSMutableString stringWithFormat:#"%#", playerEmailTxt];
NSMutableString *usrPasswdStr = [NSMutableString stringWithFormat:#"%#", playerPassword];
//Do whatever you want with these strings
}

Answer 3

I'd also recommend you check out the free Sensible TableView framework. Seems like a perfect fit for what you're trying to do, since the framework will automatically fetch the data from your fields and store them in any data structure you wish.