January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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3.3.6. Implementing Interface TextWatcher for Handling EditText Text Changes
You’ll use an anonymous inner class to implement the TextWatcher interface (from package android.text) to respond to events when the user changes the text in this app’s EditText. In particular, you’ll use method onTextChanged to display the currency-formatted bill amount and to calculate the tip and total as the user enters each digit.
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