Three Text Fields

Objectives

• Create an app with multiple text fields
• Respond to user input in text fields
• Conform class to an existing protocol

Behavior Requirements

Text Fields

Top text field:

• Should keep a maximum of five characters.
• Any characters the user enters are acceptable.
• If the user enters more than five characters in the text field, any additional characters should not be shown in the text field.
• The backspace key should work.

Middle text field:

• Should be tied to a switch (use documentation for UISwitch control)
• When the switch is in the on position, the text field should be editable with any amount of characters allowed.
• When the switch is in the off position, the text field should not be editable.

Bottom text field:

• Should display a dollar figure with two digits for the pennies, and at least one digit for the dollars.
• The field should originally display $0.00.
• If the user types in five 2's, then the value should progress like this: $0.02, $0.01, $0.12, $1.23, $12.34, and finally $123.45 (assume that the user never backspaces, and that the user only inputs ints into this text field).

Extra Features

• If a user enters a backspace, the text field should update appropriately. For example, if the text field currently contains $123.45, and the user enters a backspace, the textfield should be updated to $12.34
• If the user enters anything but an int, ignore it
• Change the keyboard to the numeric keyboard for this text field only