January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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7.7. ColorDialogFragment Class
Class ColorDialogFragment (Figs. 7.34–7.38) extends DialogFragment to create an AlertDialog for setting the drawing color. The class’s instance variables (lines 19–24) are used to reference the GUI controls for selecting the new color, displaying a preview of it and storing the color as a 32-bit int value that represents the color’s ARGB values.
1 // ColorDialogFragment.java 2 // Allows user to set the drawing color on the DoodleView 3 package com.deitel.doodlz; 4 5 import android.app.Activity; 6 import android.app.AlertDialog; 7 import android.app.Dialog; 8 import android.app.DialogFragment; 9 import android.content.DialogInterface;10 import android.graphics.Color; ...
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