FlexiCoder Blog

In order to move the cursor automatically to the next data entry field when the user presses Next on the keyboard you need to resignFirstResponder from the current field and assign it to the next field using becomeFirstResponder

- (BOOL)textFieldShouldReturn:(UITextField *)textField {
	if (textField == field1TextField) {
		[textField resignFirstResponder];
		[field2TextField becomeFirstResponder];
	}
	else if (textField == field2TextField) {
		[textField resignFirstResponder];
		[field3TextField becomeFirstResponder];
	}
	else if (textField == field3TextField) {
		[textField resignFirstResponder];
	}
	return YES;
}

You need to set the Return Key types accordingly within the interface builder. Your ViewController must also implement UITextFieldDelegate and the textfields delegate assignment must be set via IB to the File’s Owner

See what I do

If you’ve updated your development phones to have the latest OS, 3.0.1, then you won’t be able to load you apps onto the device without first following this apple advisory

2. Copy and paste the following line into Terminal:

ln -s /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0\ \(7A341\) / Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0.1

But theres a catch, if you copy the text they have from the document into Terminal there is an extra space created before the second “Developer” path, remove that and all should be ok.

i.e. the command line should be…

ln -s /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0\ \(7A341\) /Developer/Platforms/iPhoneOS.platform/DeviceSupport/3.0.1

When you alter your underlying data model the iPhone simulator will not be able to load your app as the cached version of the database doesn’t match the new one. The easiest way to resolve the problem is to run the simulator, click and hold your app and remove it like you would remove an app from your actual phone.

Once you’ve created your data model within Xcode, you may need to generate the classes so that you can use and reference them in your main project. To do this open the data model, select File/New File… from the Xcode menu system, this will display the following screen…

New File screen with Managed Object Class selected

If you want to get into iPhone development this is a great book to start from Beginning iPhone Development by apress