David Defour - Université de Perpignan

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SWITCHING ACTIVITIES: ANDROIDMANIFEST.XML ... Most parts of this file were created automatically when the Android project was made in Eclipse. To switch Activities yourself, cut and paste this code from the downloadable source, and change only android:name and android:label. jeudi 26 janvier 12
jeudi 26 janvier 12 OVERALL WIDGET PROJECT LAYOUT Java code Images and XML files that refer to sets of images. The layout files will refer to these images via @drawable/ base_file_name (e.g., @drawable/gps). See ImageButton examples in lecture on buttons. Layout files. The Java code will refer to the overall layouts via R.layout.base_file_name (R.layout.main, R.layout.spinners, etc.). The Java code will refer to specific GUI elements with findViewById(R.id.element_id). Strings. The Java code will refer to these via getString(R.string.string_name). The layout files will refer to these with @string/string_name. You can also define arrays of strings here, or put the arrays in a separate file typically called arrays.xml. Arrays defined here are used in the first Spinner example. In order for one Activity to start another Activity in the same project, you need some entries in here. See upcoming slide.
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jeudi 26 janvier 12 PROGRAMMATION S
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jeudi 26 janvier 12 DESCRIPTION DU
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DESCRIPTION • Titre : Réalisatio
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jeudi 26 janvier 12 EXAMPLE: APP IN
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jeudi 26 janvier 12 DÉPLACEMENTS O
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GESTION DU CONTRÔLE Ordre Fonction
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RÉFÉRENCES: • http://lwh.free.f
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• Motivations RÉSUMÉ DU COURS
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AVANTAGES DES APPLI WEB • Accès
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AVANTAGES DES APPLI MOBILES • Plu
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INCONVÉNIENTS DES APPS • Pas d
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INSTALLATION • Apps génériques
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OS POUR LE DÉVELOPPEMENT DES APPS
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GOOGLE SEARCH: ANDROID jeudi 26 jan
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jeudi 26 janvier 12 PRÉSENCE SUR L
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jeudi 26 janvier 12 CONCLUSION Pré
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• Web apps vs. Android apps jeudi
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jeudi 26 janvier 12 ANDROID: INSTAL
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jeudi 26 janvier 12 INSTALLATION DE
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INSTALLATION DE JAVA SE 6 • http:
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INSTALLATION D’ECLIPSE • http:/
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ANDROID SDK • Présentation • B
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• Présentation PLUGIN ADT • AD
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CONFIGURATION DE ADT • Définisse
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ANDROID VIRTUAL DEVICES (AVDS) •
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LANCEMENT D’UNE APPS SUR jeudi 26
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LANCEMENT DE HELLOANDROID DANS L’
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jeudi 26 janvier 12 HELLO ANDROID
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DÉFINITION DES OPTIONS DU PROJETS
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LANCEMENT DE VOTRE APPS • Fonctio
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LES BASES DE DDMS • Concepts •
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LANCEMENT D’UNE APPS SUR jeudi 26
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VIA L’USB • Prérequis : il fau
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EXPORTER UN PACKAGE • A faire à
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jeudi 26 janvier 12 LANCEMENT DE L
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RÉSUMÉ • Installation des logic
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CONCEPTS DE BASE DE LA PROGRAMMATIO
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jeudi 26 janvier 12 RÉALISER UN PR
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RÉALISER VOTRE PROPRE PROJET ANDRO
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jeudi 26 janvier 12 DÉFINITION DES
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LANCER UNE NOUVELLE APP SUR UN DEVI
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jeudi 26 janvier 12 STRUCTURE D’U
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LES 3 APPROCHES PRINCIPALES • Jav
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APPROCHE XML: SCHÉMA • Java publ
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jeudi 26 janvier 12 LAYOUT JAVA
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jeudi 26 janvier 12 CODE (CORPS) pu
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RÉSULTAT SUR L’ ÉMULATEUR • c
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jeudi 26 janvier 12 LAYOUT XML
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PLUS DE DÉTAILS • res/layout/mai
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RES/LAYOUT/MAIN.XML jeudi 26 j
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} jeudi 26 janvier 12 CODE (JAVA) p
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jeudi 26 janvier 12 ECLIPSE ADT VIS
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jeudi 26 janvier 12 ECLIPSE VISUAL
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• Approches CONCEPTS • Utilisat
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RES/VALUES/STRINGS.XML Say Hello
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• Dans l’émulateur • Click-D
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jeudi 26 janvier 12 PROJECT LAYOUT
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jeudi 26 janvier 12 QUESTIONS?
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RÉSUMÉ DU COURS • Utilisation d
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CONCEPTS • Buts • Changer la co
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RES/LAYOUT/MAIN.XML jeudi 26 janv
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jeudi 26 janvier 12 MAIN ACTIVITY C
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} jeudi 26 janvier 12 EVENT HANDLER
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jeudi 26 janvier 12 RÉSULTATS SUR
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IDÉE • Buts • Changer la coule
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EVENT HANDLER CLASS (PARTIE DE MAIN
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jeudi 26 janvier 12 RÉSULTAT SUR U
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CONCEPT • Buts • Changer la cou
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RES/VALUES/STRINGS.XML Event Hand
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} } jeudi 26 janvier 12 ACTIVITY CL
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jeudi 26 janvier 12 ACTIVITY CLASS
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jeudi 26 janvier 12 RÉSULTATS SUR
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CONCEPT • Buts • Changer la cou
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jeudi 26 janvier 12 RÉSULTAT SUR L
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jeudi 26 janvier 12 GESTION DES ÉV
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jeudi 26 janvier 12 RÉSULTAT SUR L
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jeudi 26 janvier 12 COPIE D’UN PR
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jeudi 26 janvier 12 CONCLUSION
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APPROCHES: CONTRÔLE SIMPLE • Sit
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• Buttons RÉSUMÉ DU COURS • I
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WIDGET LECTURES COMBINED IN SINGLE
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SWITCHING ACTIVITIES: SUMMARY • S
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jeudi 26 janvier 12 APPROACH FOR BU
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XML: LAYOUT FILE (RES/LAYOUT/BUTTON
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JAVA (BUTTONACTIVITY.JAVA) public c
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BUTTON • Idea • A push button d
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XML: STRINGS FILE ENTRIES (PART OF
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jeudi 26 janvier 12 Emulator RESULT
Page 187 and 188: IMAGEBUTTON, VARIATION 1 • Idea
Page 189 and 190: XML: STRINGS FILE ENTRIES (PART OF
Page 191 and 192: jeudi 26 janvier 12 RESULTS (EMULAT
Page 193 and 194: IMAGEBUTTON, VARIATION 2 • Idea
Page 195 and 196: IMAGE DESCRIPTOR FILE (RES/ DRAWABL
Page 201 and 202: RADIOBUTTON • Idea • A button f
Page 203 and 204: FIRST EXAMPLE: EVENT HANDLERS ATTAC
Page 205 and 206: STRINGS FILE AND JAVA • Nothing n
Page 207 and 208: jeudi 26 janvier 12 RADIOBUTTON (WI
Page 209 and 210: XML: LAYOUT FILE ENTRY (PART OF RES
Page 211 and 212: JAVA (RELEVANT PARTS) public class
Page 213 and 214: JAVA (RELEVANT PARTS, CONTINUED) }
Page 215 and 216: jeudi 26 janvier 12 CHECKBOX
Page 221 and 222: TOGGLEBUTTON • Idea • A button
Page 225 and 226: JAVA (RELEVANT PARTS, CONTINUED) Th
Page 227 and 228: jeudi 26 janvier 12 WRAP-UP
Page 229 and 230: jeudi 26 janvier 12 WIDGETS: SPINNE
Page 231 and 232: jeudi 26 janvier 12 GENERAL APPROAC
Page 233 and 234: LAYOUT FILES FOR WIDGET LECTURES
Page 235 and 236: SWITCHING ACTIVITIES: SUMMARY • S
Page 237: SWITCHING ACTIVITIES: WIDGETSINITIA
Page 241 and 242: SPINNER WITH PREDEFINED • Idea CH
Page 243 and 244: ONITEMSELECTEDLISTENER • onItemSe
Page 247 and 248: JAVA (RELEVANT PARTS, CONTINUED) pr
Page 249 and 250: jeudi 26 janvier 12 SPINNER APPROAC
Page 251 and 252: SPINNER (CONTINUED) • Key XML att
Page 255 and 256: JAVA (RELEVANT PARTS) public class
Page 259 and 260: SUMMARY • Spinner with fixed entr
Page 261 and 262: Topics in This Section • LinearLa
Page 263 and 264: Main Layout Strategies • XML-base
Page 265 and 266: Commonly Used Attributes • Size -
Page 267 and 268: Commonly Used Attributes (Continued
Page 269 and 270: LinearLayout • Idea -Put componen
Page 271 and 272: Example Details 271 jeudi 26 janvie
Page 277 and 278: Colors • Idea - Although colors c
Page 279 and 280: Layout File (res/layouts/ nested_la
Page 281 and 282: Localization Preview • Idea -You
Page 283 and 284: Setting Locale Programmatically •
Page 285 and 286: Localized Color File (res/values-qq
Page 287 and 288: Results 287 jeudi 26 janvier 12 Loc
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Using android:layout_weight • Ide
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Java Code public class LayoutWeight
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jeudi 26 janvier 12 RelativeLayout
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Referring to Existing IDs • First
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Example Details 297 jeudi 26 janvie
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jeudi 26 janvier 12 TableLayout ©
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TableRow • Idea - Goes inside Tab
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Hierarchy Viewer • Idea -The Andr
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jeudi 26 janvier 12 Wrap-Up © 2011
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More Reading • Tutorial: Declarin
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jeudi 26 janvier 12 © 2011 Marty H
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jeudi 26 janvier 12 Overview © 201
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Pros and Cons of Following Conventi
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Indentation: blocks that are nested
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Break Things into Small Pieces •
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Use JavaDoc • Use JavaDoc from th
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Use Other Standard Annotations when
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Initialize Local Variables when Dec
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Use TODO Comments for Temporary Cod
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Indent 4 Spaces for Blocks • Inde
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Fully Qualify Imports • List each
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Start JavaDoc Comments with 3 rd Pe
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Start Instance Variables with “m
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Never Ignore Exceptions • Avoid e
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Why Ignoring Exceptions Rule is Too
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Why Generic Exception Rule is (Argu
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Summary • Strictly follow convent
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Topics in This Section • Part I -
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Idea • Android philosophy -Activi
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Summary of Layout 355 jeudi 26 janv
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XML: Layout File: Divider (res/layo
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XML: Colors File (res/values/colors
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Java (LoanCalculatorActivity.java)
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Java (PaymentInfo.java) public clas
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Example: Results 365 jeudi 26 janvi
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Summary • Idea - Specify class na
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Example: Overview • Initial Activ
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XML: Manifest File Template (Androi
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XML: Strings File (res/values/strin
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Summary • Idea - Attach a Bundle
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Option 1: Attaching Entire Bundle t
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XML: Layout File (res/layout/main.x
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Java (IntentFilter1Activity.java) p
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Java (LoanBundler.java, Continued)
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Java (LoanCalculatorActivity, Conti
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More Reading • Tutorial: Intents
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jeudi 26 janvier 12 Intents, Intent
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jeudi 26 janvier 12 Invoking Activi
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Registering to Handle URIs • Matc
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Java (IntentFilter2Activity.java) p
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Summary • Idea - Embed query para
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XML: Manifest File Action Declarati
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Java (IntentFilter2Activity, Contin
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jeudi 26 janvier 12 Intents, Intent
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Using TabActivity: Outline public c
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Option 1: A Single Image • Pros -
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XML Code for Dual-Image Icon
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Example: Overview • Initial Activ
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XML: Manifest File Action Declarati
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Java (TabbedActivity: Tab 2) 443 je
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Summary • Java (extends TabActivi
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Topics in This Section • Localiza
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Big Idea • Good news - Android’
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jeudi 26 janvier 12 Language © 201
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Steps • Make multiple folders wit
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How User Changes Device Language
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Example: The Android Resort • Ide
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Strings File: Spanish (res/values-e
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Manifest File (No Language-Based Ve
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Project Layout 466 jeudi 26 janvier
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Results: Spanish 468 jeudi 26 janvi
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Graphical Layout Editor in Eclipse
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Changing the Language Programmatica
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Idea • Values can be specific to
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Strings File: General Spanish (res/
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Project Layout 480 jeudi 26 janvier
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jeudi 26 janvier 12 Screen Orientat
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Steps • Make two folders: default
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Precedence of Folder Names • Idea
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Layout File: Landscape Mode (res/la
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Dimensions File: Landscape (res/val
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Results: English (Really Non-Spanis
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Results: Mexican Spanish 496 jeudi
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Example: Screen from Widgets Lectur
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jeudi 26 janvier 12 Display Resolut
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Common Approaches • Alternative 1
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Best Practices • For small icons
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More Reading • Developer’s Guid
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jeudi 26 janvier 12 Handling Screen
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Reminder: Preventing Screen Rotatio
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Summary: Saving Data • Override o
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The Bundle Class: Details • Putti
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Loan Payment Comparisons • Idea -
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Core Java Code public class Rotatio
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Core Java Code (Continued) 528 jeud
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Java Code: Saving State 530 jeudi 2
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Java Code: PaymentInfo public class
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Lifecycle Summary onSaveInstanceSta
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More Reading • JavaDoc: Activity
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jeudi 26 janvier 12 Network Program
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jeudi 26 janvier 12 Socket Basics
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Steps for Implementing a Client (Co
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Helper Class: SocketUtils • Idea
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jeudi 26 janvier 12 Example: NIST T
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Manifest File (AndroidManifest.xml)
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Values Files • res/values/strings
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} Main Activity, Continued (NistTim
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jeudi 26 janvier 12 Aside: String F
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Formatted Output: printf • Takes
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Controlling Formatting • Differen
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Printf Example: Controlling Width a
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Parsing Strings Using StringTokeniz
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Interactive Tokenizer: Example impo
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Parsing Strings using the split met
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Interactive Tokenizer: Example publ
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Example Welcome Messages • ftp.mi
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Manifest File (AndroidManifest.xml)
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Main Activity (FtpMessageActivity.j
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} Main Activity, Continued (FtpMess
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HTTP Request/Response: GET • Requ
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Using Telnet to Test Server Command
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Example: Larry Ellison’s Home Pag
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Layout File: Portrait Mode (res/lay
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Values Files • res/values/strings
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Main Activity, Continued (UrlChecke
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Main Activity, Continued (UrlChecke
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Helper Classes • StatusLineParser
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Summary • Basics - Socket socket
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Topics in This Section • Part I (
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Big Idea • Many ways to communica
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URL and HttpURLConnection: Overview
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Simple URL Methods: Example import
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HttpURLConnection: Details • Gett
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URL Searcher • Idea -Print out al
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Layout File (res/layout/ url_search
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Main Activity (UrlSearcher1Activity
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Main Activity, Continued (UrlSearch
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Main Activity, Continued (UrlSearch
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Results 628 jeudi 26 janvier 12
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HttpClient • Idea -A popular clas
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HttpClient: Reading Result of POST
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HttpUtils 634 jeudi 26 janvier 12 p
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XML Files • AndroidManifest.xml -
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} Main Activity, Continued (UrlSear
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jeudi 26 janvier 12 Aside: JSON For
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JSON: Example in JavaScript var per
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Popular Web Services that Send JSON
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JSONObject • Idea -A popular JSON
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Extracting Data From a JSONObject
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jeudi 26 janvier 12 Using JSONObjec
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JSONObject’s Algorithm for JSONif
Page 656 and 657:
Bean Properties: Examples Method Na
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Drawbacks of JSONification • Send
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JSONObject from Bean: Example Resul
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JSON-Based Loan Calculator Service
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Servlet, Continued 664 jeudi 26 jan
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Android Activity, Continued 666 jeu
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Results 668 jeudi 26 janvier 12 htt
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Double Translate App • Idea - The
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Main Activity, Continued 672 jeudi
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Key Helper Class (TranslationUtils)
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Results: Medium-Difficulty Text 676
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Results: More Deliberately-Tricky T
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More Reading • JavaDoc -HttpURLCo
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jeudi 26 janvier 12 Multithreaded P
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684 jeudi 26 janvier 12 Overview ©
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Steps for Concurrent Programming
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Thread Mechanism One: Separate Runn
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Thread Mechanism One: Example publi
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Helper Class public class ThreadUti
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Pros and Cons of Approach • Advan
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Review of Interfaces: Syntax • Sh
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Thread Mechanism Two: Main App Impl
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Thread Mechanism Two: Example publi
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Review of Inner Classes • Class c
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Inner Class Implements Runnable: Te
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} Thread Mechanism Three: Example (
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Pros and Cons • Separate class th
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Race Conditions • Idea - You writ
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} Race Conditions: Example (Continu
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Race Conditions: Solution? • Do t
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Arbitrating Contention for Shared R
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722 jeudi 26 janvier 12 © 2011 Mar
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Methods in ExecutorService Class
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Lower-Level Threading • Use Threa
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Types of Task Queues • Executors.
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Nasty Synchronization Bug public cl
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Synchronization Solution (Continued
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Other Advanced Topics • wait/wait
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More Reading • Books -Java Concur
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740 jeudi 26 janvier 12 Overview ©
Page 742 and 743:
Nonresponsive GUI Controls • Prob
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jeudi 26 janvier 12 Updating UI Aft
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Example: Multi-URL Validator • Id
Page 748 and 749:
Main Activity: Setup Code (Continue
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Main Activity: Button Handler (Afte
Page 752 and 753:
Main Activity: Helper Methods 752 j
Page 754 and 755:
Page 756 and 757:
Displaying a Network Image • Idea
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Making a View for an Image • Idea
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Example: Unthreaded Image Viewer
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View.post • Scenario -Total wait
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Main Activity: Setup Code public cl
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Main Activity: Runnable Inner Class
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AsyncTask • Scenario - Total wait
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AsyncTask Details: Constructor •
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AsyncTask Details: doPostExecute
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Example: Multithreaded Image Viewer
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More Reading • JavaDoc -AsyncTask
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David Defour - Université de Perpignan

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