CIE 335

CIE 335.md

Java

Explications

CCO

• Théorique
  • Notes (par lui)
• Pratique
  • Pas de projets complets
  • Pas d’algorithmie
  • Comprendre la phylosophie Android (OS)

Projets durant le CIE

1. Quiz

• Fonctionnel

2. Voyage d’étude

• Amsterdam

3. Android OS

• En anglais car nom de classes

  Activity

  Intent

  Layout

  View

4. Material Design

• Design des apps

  Quantificateur

5. Tests

• Base

  Unitaires

6. Utilisateurs

• Pattern UI (Interface utilisateurs) / UX (Experience utilisateurs)

  Deux Activités

  Toolbar

  Fragments (Responsive-ish)

  Adapter

  Tabs (PageViewer)

  RecyclerView

  Navigation Drawer

  SQLite

Notes

Application

• APK

• App

  Manifests (Config project)

  ATTENTION, si le fichier est incomplet le projet ne se compile pas

• build.gradle (Module: app)

  minSdkVersion 21

  versionCode 1 - Publication

  versionName “1.0” - Publication

  dependencies - Ajout de lib

java

Code (Prog + tests)

• res

  • Ressources de l’app

    Icônes

    Images

    Fichiers

    Layout

    Couleurs

XML

Interface app

<LinearLayout xmlns: … --> root (racine)

…Layout --> (conteneur de mise en page)

LinearLayout

1. Permet de placer les view les uns en dessus des autres

2. Permet de placer les view les uns à droite des autres

3. android:orientation=“vertical”

4. android:orientation=“horizontal”

android:layout_width

Lageur du composant

Layout_ --> Défini par rapport au conteneur

largeur, hauteur : match_parent (tout l’espace du conteneur)

wrap_content : (espace de son propre contenu)

dimensions : dp

TextView

Label

android:background="#f00"

Couleur de fond

Notation hex

android:padding=“20dp”

Marge intérieur

android:layout_margin=“8dp”

Marge extrérieur

android:text

Text affiché

EditText

Zone de saisie

android:layout_marginStart=“20dp”

Marge gauche

android:layout_marginEnd=“20dp”

Marge droite

android:hint=“Merci de saisir votre prénom” />

Placeholder (WEB) / Message d’invite

Button

Bouton

android:layout_gravity=“center”

Positionnement dans le conteneur

android:layout_marginTop=“20dp”

Marge du dessus

android:id="@+id/…"

Identifiant pour accéder à la View depuis le code

activity_game

<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout  
  xmlns:android="http://schemas.android.com/apk/res/android"  
  xmlns:tools="http://schemas.android.com/tools"  
  android:layout_width="match_parent"  
  android:layout_height="match_parent"  
  android:orientation="vertical"  
  tools:context=".controller.GameActivity">  
<TextView  android:id="@+id/activity_game_question_txt"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="2"

android:textColor="@color/colorPrimary"

android:layout_marginTop="5dp"

android:layout_marginBottom="5dp"

android:layout_marginStart="15dp"

android:layout_marginEnd="15dp"

android:textSize="18sp"

android:textStyle="bold"

android:text="Question ?"

android:gravity="center" />
<Button  android:id="@+id/activity_game_answer1_btn"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="1"

android:textColor="@color/colorAccent"

android:layout_margin="5dp"

android:background="@android:color/white"

android:text="Answer 1"

android:textSize="20sp"/>
<Button  android:id="@+id/activity_game_answer2_btn"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_margin="5dp"

android:layout_weight="1"

android:background="@android:color/white"

android:textColor="@color/colorAccent"

android:text="Answer 2"

android:textSize="20sp" />
<Button  android:id="@+id/activity_game_answer3_btn"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="1"

android:textColor="@color/colorAccent"

android:layout_margin="5dp"

android:background="@android:color/white"

android:text="Answer 3"

android:textSize="20sp"/>

<Button  android:id="@+id/activity_game_answer4_btn"

android:layout_width="match_parent"

android:layout_height="0dp"

android:layout_weight="1"

android:textColor="@color/colorAccent"

android:layout_margin="5dp"

android:background="@android:color/white"

android:text="Answer 4"

android:textSize="20sp"/>

</LinearLayout>

Fichier Manifest

<Activity…

MAIN, LAUNCHER - Activité démarrée au lancement

Toutes lesActivity DOIVENT y être déclarée

Interfaces questions

TextView

height

0dp

weight

2

Button

height

0dp

weight

1

* Automatique

android:layout_weight (Définition du poids (l’importance))

Le système additionne les poids

ICI --> 6 (100%)

TextView 2/6

Button 1/6

Fonctionne comme

CSS Grid / Flexbox

Pour une couleur

FF0000

@color/colorPrimary --> Couleur primaire du thème

Variables CSS (ou Prepocessors)

@android:color/white --> Couleur système

android:textColor

Couleur du texte

CSS Equiv

color

android:textSize

Taille de police sp

CSS Equiv

text-size

android:textStyle

bold, italic, normal

CSS Equiv

text-style

text-weight

activity_main

<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
  xmlns:tools="http://schemas.android.com/tools"  
  android:orientation="vertical"  
  android:layout_width="match_parent"  
  android:layout_height="match_parent"  
  tools:context=".controller.MainActivity">  
<!-- Label -->

<TextView

android:id="@+id/activity_main_greeting_txt"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:paddingTop="10dp"

android:paddingStart="10dp"

android:text="Bienvenue, quel est votre prénom ?" />
<!-- Zone de saisie -->

<EditText

android:id="@+id/activity_main_first_name_input"

android:layout_width="match_parent"

android:layout_height="wrap_content"

android:layout_marginStart="20dp"

android:layout_marginEnd="20dp"

android:hint="Merci de saisir votre prénom" />
<!--  Bouton -->

<Button

android:id="@+id/activity_main_play_btn"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="center"

android:padding="20dp"

android:layout_marginTop="20dp"

android:text="Commencer" />

</LinearLayout>

---

Java

Lancement d’Activity

Demande doit être faite à l’OS

L’objet pour communiquer avec le système --> Intent (Enveloppe)

Intent(context, class)

context

l’Activity actuellement en exécution (Demandeur)

mainActivity.this

class

(Réflexion) Nom de l’Activity à démarrer avec le .class

GameActivity.class

MainActivity

Commencer

GameActivity

MainActivity (Stop)

Fin d’une Activity

Finish();

Met fin à l’Activity et s’il y a une autre Activity (soppée) elle redémarre

• Le tag est une information supplémentaire que l’on peut assigner à une View

Lancement d’activity avec retour attendu

(startActivityForResult)

Il faut identifier l’Activity qu’on lance

requestCode

show opening bracket vscode

MainActivity

package ch.ceff.android.monquiz.controller;  
import androidx.annotation.Nullable;

import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;

import android.content.SharedPreferences;

import android.os.Bundle;

import android.text.Editable;

import android.text.TextWatcher;

import android.util.Log;

import android.view.View;

import android.widget.Button;

import android.widget.EditText;

import android.widget.TextView;

import android.widget.Toast;
import ch.ceff.android.monquiz.R;

import ch.ceff.android.monquiz.model.User;
/**


AppCompatActivity --> Activity compatible avec les anciennes versions */public class MainActivity extends AppCompatActivity {
/// Constantes requêtes d'Activity  
private static final int GAME_ACTIVITY_REQUEST_CODE = 42;


/// Constantes pour les SharedPreferences  
private static final String PREF_KEY_FIRST_NAME = "PREF_KEY_FIRST_NAME";

private static final String PREF_KEY_SCORE = "PREF_KEY_SCORE";
/// Bind  
private TextView mGreetingText;

private EditText mFirstNameInput;

private Button mPlayButton;
/// User  
private User mUser;
/// Stockage persistant  
private SharedPreferences mPreferences;
/// Méthode obligatoire --> Création de l'Activity  
@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

/// Inflate le fichier XML pour construire l'interface  
/// R.layout.activity_main  setContentView(R.layout.activity_main);  
/// L'utilisateur de l'app  
mUser = new User();

/// Récupération des sharedPreferences  
mPreferences = getPreferences(MODE_PRIVATE);
/// Votre code à partir d'ici  
mGreetingText = findViewById(R.id.activity_main_greeting_txt);

mFirstNameInput = findViewById(R.id.activity_main_first_name_input);

mPlayButton = findViewById(R.id.activity_main_play_btn);
/// 1) Désactivation du bouton Commencer  
mPlayButton.setEnabled(false);
/// Salutation du USER  
greetUser();
/// 2) Ecouter la zone de saisie pour détecter la composition du nom  
mFirstNameInput.addTextChangedListener(new TextWatcher() {

@Override

public void beforeTextChanged(CharSequence charSequence, int start, int count, int after) {
        <span class="token punctuation">}</span>  

        <span class="token annotation punctuation">@Override</span>  

public void onTextChanged(CharSequence charSequence, int start, int before, int count) {

/// Dès que la première lettre est saisie --> On active le bouton  
mPlayButton.setEnabled(charSequence.toString().length() != 0);
}
        <span class="token annotation punctuation">@Override</span>  

public void afterTextChanged(Editable editable) {
        <span class="token punctuation">}</span>  
    <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  

/// 3) Mise en place du gestionnaire pour le bouton Commencer  
mPlayButton.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View v) {

/// Mémoriser le prénom du User  
String firstName = mFirstNameInput.getText().toString();

mUser.setFirstName(firstName);
/// Stockage du prénom en mémoire  
SharedPreferences.Editor editor = mPreferences.edit();

editor.putString(PREF_KEY_FIRST_NAME, mUser.getFirstName());

/// Validation du stockage  
editor.apply();
/// Démarrage de la seconde activité  
/// 1) Création d'un Intent /// 2) Démarrage de l'Activity décrite dans l'Intent  Intent gameActivity = new Intent(MainActivity.this, GameActivity.class);  
startActivityForResult(gameActivity, GAME_ACTIVITY_REQUEST_CODE);

//                startActivity(gameActivity);  
}

});
Log.d("MainActivity", "---> onCreate()");

}
<span class="token comment">/// Cette méthode est appelée automatiquement lorsque qu'on attend un retour d'Activity  </span>

@Override

protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {

super.onActivityResult(requestCode, resultCode, data);
if (GAME_ACTIVITY_REQUEST_CODE == requestCode) {

if (RESULT_OK == resultCode) {

int score = data.getIntExtra(GameActivity.BUNDLE_EXTRA_SCORE, 0);
mPreferences.edit().putInt(PREF_KEY_SCORE, score).apply();
greetUser();

}

}

}
<span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">greetUser</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    String firstName <span class="token operator">=</span> mPreferences<span class="token punctuation">.</span><span class="token function">getString</span><span class="token punctuation">(</span>PREF_KEY_FIRST_NAME<span class="token punctuation">,</span> null<span class="token punctuation">)</span><span class="token punctuation">;</span>  

if (firstName != null) {

int score = mPreferences.getInt(PREF_KEY_SCORE, 0);
/// Faites mieux lol  
String message = "Vous voilà de retour, " + firstName

+ " !\nVotre dernier score est de " + score

+ ", voulez-vous l'améliorer ?";
mGreetingText.setText(message);

mFirstNameInput.setText(firstName);

mFirstNameInput.setSelection(firstName.length());

mPlayButton.setEnabled(true);

}

}
<span class="token annotation punctuation">@Override</span>  

protected void onStart() {

super.onStart();

Log.d("MainActivity", "---> onStart()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onResume() {

super.onResume();

Log.d("MainActivity", "---> onResume()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onPause() {

super.onPause();

Log.d("MainActivity", "---> onPause()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onStop() {

super.onStop();

Log.d("MainActivity", "---> onStop()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onDestroy() {

super.onDestroy();

Log.d("MainActivity", "---> onDestroy()");

}

}

GameActivity

package ch.ceff.android.monquiz.controller;  
import android.content.DialogInterface;

import android.content.Intent;

import android.os.Bundle;

import android.os.Handler;

import android.util.Log;

import android.view.MotionEvent;

import android.view.View;

import android.widget.Button;

import android.widget.TextView;

import android.widget.Toast;
import androidx.appcompat.app.AlertDialog;

import androidx.appcompat.app.AppCompatActivity;
import java.util.Arrays;
import ch.ceff.android.monquiz.R;

import ch.ceff.android.monquiz.model.Question;

import ch.ceff.android.monquiz.model.QuestionBank;
public class GameActivity extends AppCompatActivity implements View.OnClickListener {
<span class="token keyword">public</span> <span class="token keyword">static</span> <span class="token keyword">final</span> String BUNDLE_EXTRA_SCORE <span class="token operator">=</span> <span class="token string">"BUNDLE_EXTRA_SCORE"</span><span class="token punctuation">;</span>  

private TextView mQuestionText;

private Button mAnswerButton1;

private Button mAnswerButton2;

private Button mAnswerButton3;

private Button mAnswerButton4;
/// Liste de questions  
private QuestionBank mQuestionBank;

/// Question en cours  
private Question mCurrentQuestion;

/// Nombre de questions de la sessions  
private int mNumberOfQuestions;

/// Le score du User  
private int mScore;
/// Désactivation des clics pendant la pause  
private boolean mEnableTouchEvents;
@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_game);
/// Préparation de la liste des questions  
mQuestionBank = this.generateQuestion();
mEnableTouchEvents = true;
/// Première question ?  
mCurrentQuestion = mQuestionBank.getQuestion();

/// Combien de questions à poser ?  
mNumberOfQuestions = 4;
mScore = 0;
mQuestionText = findViewById(R.id.activity_game_question_txt);

mAnswerButton1 = findViewById(R.id.activity_game_answer1_btn);

mAnswerButton2 = findViewById(R.id.activity_game_answer2_btn);

mAnswerButton3 = findViewById(R.id.activity_game_answer3_btn);

mAnswerButton4 = findViewById(R.id.activity_game_answer4_btn);
mAnswerButton1.setOnClickListener(this);

mAnswerButton2.setOnClickListener(this);

mAnswerButton3.setOnClickListener(this);

mAnswerButton4.setOnClickListener(this);
/// Pour éviter trop de tests dans onClick --> Tag --> Index de la réponse  
mAnswerButton1.setTag(0);

mAnswerButton2.setTag(1);

mAnswerButton3.setTag(2);

mAnswerButton4.setTag(3);
this.displayQuestion(mCurrentQuestion);
Log.d("GameActivity", "---> onCreate()");
}
<span class="token keyword">private</span> <span class="token keyword">void</span> <span class="token function">displayQuestion</span><span class="token punctuation">(</span>Question question<span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    mQuestionText<span class="token punctuation">.</span><span class="token function">setText</span><span class="token punctuation">(</span>question<span class="token punctuation">.</span><span class="token function">getQuestion</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  

mAnswerButton1.setText(question.getChoiceList().get(0));

mAnswerButton2.setText(question.getChoiceList().get(1));

mAnswerButton3.setText(question.getChoiceList().get(2));

mAnswerButton4.setText(question.getChoiceList().get(3));

}
<span class="token keyword">private</span> QuestionBank <span class="token function">generateQuestion</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token comment">/// Version 0.1 --&gt; Question en "dur"  </span>

Question question1 = new Question("Quel layout permet d'organiser les éléments horizontalement ou verticalement ?",

Arrays.asList("FrameLayout", "RelativeLayout", "LinearLayout", "ConstraintLayout"), 2);

Question question2 = new Question("Quel attribut permet de définir le sens de remplissage d'un LinearLayout ?",

Arrays.asList("layout_weight", "orientation", "hint", "id"), 1);

Question question3 = new Question("Quel élément est un label ? ",

Arrays.asList("EditText", "TextView", "ImageView", "Button"), 1);

Question question4 = new Question("Quel élément est une zone de saisie de texte ?",

Arrays.asList("Button", "TextView", "ImageView", "EditText"), 3);

Question question5 = new Question("Quel attribut utiliser pour modifier la marge intérieur d'un élément ?",

Arrays.asList("margin", "padding", "gravity", "weight"), 1);

Question question6 = new Question("Quel attribut permet de modifier la couleur de fond d'un élément ?",

Arrays.asList("textColor", "orientation", "layout_height", "background"), 3);

Question question7 = new Question("Quelle méthode est utilisée pour afficher la GUI au lancement de l'application ?",

Arrays.asList("findViewById()", "setEnabled()", "setContentView()", "toString()"), 2);

Question question8 = new Question("Quelle unité faut-il utiliser sous Android pour définir une dimension ?",

Arrays.asList("px", "in", "dp", "cm"), 2);

Question question9 = new Question("Comment s'appelle le fichier de configuration d'une application Android ?",

Arrays.asList("activity_main", "AndroidManifest", "MainActivity", "activity_game"), 1);

Question question10 = new Question("Comment définissez-vous un gestionnaire de clic sur un bouton ?",

Arrays.asList("addOnClickListener", "addTextChangedListener", "setOnCkickListener", "setKeyListener"), 2);
return new QuestionBank(Arrays.asList(question1, question2, question3, question4, question5, question6, question7, question8, question9, question10));

}
<span class="token annotation punctuation">@Override</span>  

public void onClick(View v) {

int reponseIndex = (int) v.getTag();
if (reponseIndex == mCurrentQuestion.getAnswerIndex()) {

mScore++;

Toast.makeText(this, "Correct", Toast.LENGTH_SHORT).show();

} else {

Toast.makeText(this, "Incorrect", Toast.LENGTH_SHORT).show();

}
    mEnableTouchEvents <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>  

/// Améliorer l'UX --> Pause avant d'afficher la prochaine question  
new Handler().postDelayed(new Runnable() {

@Override

public void run() {

mEnableTouchEvents = true;

/// Pépare la prochaine question  
if (--mNumberOfQuestions == 0) {

endGame();

} else {

mCurrentQuestion = mQuestionBank.getQuestion();

displayQuestion(mCurrentQuestion);

}

}

}, 2000);
/// Pépare la prochaine question  
//        if (--mNumberOfQuestions == 0) {  
//            endGame();  
//        } else {  
//            mCurrentQuestion = mQuestionBank.getQuestion();  
//            displayQuestion(mCurrentQuestion);  
//        }  
}
<span class="token comment">/**  



Dès qu'on touche l'écran, ça c'est appelé * Méthode de dispatch des événements * @param ev


@return

*/

@Override

public boolean dispatchTouchEvent(MotionEvent ev) {

return mEnableTouchEvents && super.dispatchTouchEvent(ev);

}
private void endGame() {

/// Affichage d'une boîte de dialogue  
AlertDialog.Builder builder = new AlertDialog.Builder(this);


/// Définir un titre, un message et les boutons  
builder.setTitle("Résultats")

.setMessage("Votre score est de " + mScore)

.setPositiveButton("OK", new DialogInterface.OnClickListener() {

@Override

public void onClick(DialogInterface dialog, int which) {

/// Création d'un intent pour retourner des données  
Intent intent = new Intent();

/// Ajout d'une donnée (EXTRA)  
intent.putExtra(BUNDLE_EXTRA_SCORE, mScore);

/// Que s'est-il passé ?  
setResult(RESULT_OK, intent);

finish(); /// Met fin à l'Activity  
}

})

.setCancelable(false) /// Annule la fermeture de la boîte avec un clic en dehors  
.create()

.show();

}
<span class="token annotation punctuation">@Override</span>  

protected void onStart() {

super.onStart();

Log.d("GameActivity", "---> onStart()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onResume() {

super.onResume();

Log.d("GameActivity", "---> onResume()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onPause() {

super.onPause();

Log.d("GameActivity", "---> onPause()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onStop() {

super.onStop();

Log.d("GameActivity", "---> onStop()");

}
<span class="token annotation punctuation">@Override</span>  

protected void onDestroy() {

super.onDestroy();

Log.d("GameActivity", "---> onDestroy()");

}

}

User

package ch.ceff.android.monquiz.model;  
public class User {

private String mFirstName;
public String getFirstName() {

return mFirstName;

}
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setFirstName</span><span class="token punctuation">(</span>String firstName<span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    mFirstName <span class="token operator">=</span> firstName<span class="token punctuation">;</span>  

}
<span class="token annotation punctuation">@Override</span>  

public String toString() {

return "User{" +

"mFirstName='" + mFirstName + ''' +

'}';

}

}

Question

package ch.ceff.android.monquiz.model;  
import java.util.List;
public class Question {
<span class="token keyword">private</span> String mQuestion<span class="token punctuation">;</span>  

private List<String> mChoiceList;

private int mAnswerIndex;
//    Quel layout permet d'organiser les éléments horizontalement ou verticalement ?  
//    FrameLayout, RelativeLayout, LinearLayout, ConstraintLayout, 2  
public Question(String question, List<String> choiceList, int answerIndex) {

this.setQuestion(question);

this.setChoiceList(choiceList);

this.setAnswerIndex(answerIndex);

}
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setQuestion</span><span class="token punctuation">(</span>String question<span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token keyword">this</span><span class="token punctuation">.</span>mQuestion <span class="token operator">=</span> question<span class="token punctuation">;</span>  

}
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setChoiceList</span><span class="token punctuation">(</span>List<span class="token operator">&lt;</span>String<span class="token operator">&gt;</span> choiceList<span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token keyword">if</span> <span class="token punctuation">(</span>choiceList <span class="token operator">==</span> null<span class="token punctuation">)</span> <span class="token punctuation">{</span>  
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">IllegalArgumentException</span><span class="token punctuation">(</span><span class="token string">"La liste ne peut pas être vide !"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  

}
    <span class="token keyword">this</span><span class="token punctuation">.</span>mChoiceList <span class="token operator">=</span> choiceList<span class="token punctuation">;</span>  

}
<span class="token keyword">public</span> <span class="token keyword">void</span> <span class="token function">setAnswerIndex</span><span class="token punctuation">(</span><span class="token keyword">int</span> answerIndex<span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token keyword">if</span> <span class="token punctuation">(</span>answerIndex <span class="token operator">&lt;</span> <span class="token number">0</span> <span class="token operator">||</span> answerIndex <span class="token operator">&gt;=</span> mChoiceList<span class="token punctuation">.</span><span class="token function">size</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
        <span class="token keyword">throw</span> <span class="token keyword">new</span> <span class="token class-name">IllegalArgumentException</span><span class="token punctuation">(</span><span class="token string">"Mauvaise valeur d'index"</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  

}
    <span class="token keyword">this</span><span class="token punctuation">.</span>mAnswerIndex <span class="token operator">=</span> answerIndex<span class="token punctuation">;</span>  

}
<span class="token keyword">public</span> String <span class="token function">getQuestion</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token keyword">return</span> mQuestion<span class="token punctuation">;</span>  

}
<span class="token keyword">public</span> List<span class="token operator">&lt;</span>String<span class="token operator">&gt;</span> <span class="token function">getChoiceList</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token keyword">return</span> mChoiceList<span class="token punctuation">;</span>  

}
<span class="token keyword">public</span> <span class="token keyword">int</span> <span class="token function">getAnswerIndex</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token keyword">return</span> mAnswerIndex<span class="token punctuation">;</span>  

}
<span class="token annotation punctuation">@Override</span>  

public String toString() {

return "Question{" +

"mQuestion='" + mQuestion + ''' +

", mChoiceList=" + mChoiceList +

", mAnswerIndex=" + mAnswerIndex +

'}';

}

}

QuestionBank

package ch.ceff.android.monquiz.model;  
import java.util.Collections;

import java.util.List;
public class QuestionBank {
<span class="token keyword">private</span> List<span class="token operator">&lt;</span>Question<span class="token operator">&gt;</span> mQuestionList<span class="token punctuation">;</span>  

private int mNextQuestionIndex;
public QuestionBank(List<Question> questionList) {

mQuestionList = questionList;

/// Mélanger la liste  
Collections.shuffle(mQuestionList);

mNextQuestionIndex = 0;

}
<span class="token keyword">public</span> Question <span class="token function">getQuestion</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>  
    <span class="token comment">/// Retoure à 0 si débordement de la liste  </span>

if (mNextQuestionIndex == mQuestionList.size()) {

mNextQuestionIndex = 0;

}
    <span class="token keyword">return</span> mQuestionList<span class="token punctuation">.</span><span class="token function">get</span><span class="token punctuation">(</span>mNextQuestionIndex<span class="token operator">++</span><span class="token punctuation">)</span><span class="token punctuation">;</span>  

}
}

SharedPreferences

Création

mPreferences = getPreferences(MODE_PRIVATE);

Ajout de donnée

1. Récupération de l’éditeur

2. Création de la donnée à stocker

3. Stockage

SharedPreferences.Editor editor = mPreferences.edit(); /// 1)

editor.putString(“NOM”, “VALEUR”); /// 2)

editor.apply(); /// 3)

Lecture

mPreferences.getString(“NOM”, null);

Professions Android

Front-End

Developpeur UX (Science)

Developpeur UI (view)

Developpeur app (controller, model)

Back-End

Developpeur BD, Réseau

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Written by Khodok

Khoding

Written with StackEdit.