Как получить данные на кнопке и перейти к следующей кнопке?

Question

Я работаю над Android-викториной. Я создал свою базу данных с одним вопросом и четырьмя вариантами вместе с уровнем сложности. Я создал макет для отображения вопроса с четырьмя кнопками. Теперь проблема заключается в том, как я подключу свою базу данных с вопросом и четырьмя кнопками.

, так что, когда я нажимаю на правую кнопку, он переходит к следующему вопросу, и когда я нажимаю на неправильную кнопку, выдается сообщение об ошибке и завершается.

код в XML

<?xml version="1.0" encoding="utf-8"?> 

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" android:layout_width="fill_parent" 
android:layout_height="fill_parent" android:gravity="center_horizontal" 
android:background="@drawable/background"> 

<LinearLayout android:orientation="horizontal" 
     android:layout_width="wrap_content" 
    android:layout_height="110dp" 
    android:paddingTop="5dip" android:paddingBottom="5dip" 
    android:gravity="center_horizontal"> 

    <ImageView 
     android:id="@+id/logo" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:paddingBottom="1dip" 
     android:paddingTop="1dip" 
     android:src="@drawable/logo2" /> 

</LinearLayout> 

<LinearLayout android:orientation="horizontal" 
    android:layout_width="fill_parent" android:layout_height="wrap_content" 
    android:paddingTop="5dip" android:paddingBottom="5dip" 
    android:gravity="center_horizontal"> 

    <RadioGroup android:layout_width="fill_parent" 
     android:layout_height="wrap_content" android:orientation="vertical" 
     android:background="#99CCFF" 
     android:id="@+id/group1"> 

     <TextView android:layout_width="fill_parent" 
      android:layout_height="wrap_content"   
      android:background="#0000CC" 
      android:textStyle="bold" android:id="@+id/question"/> 

     <Button android:onClick="false" android:id="@+id/answer1" 
      android:layout_width="150dip" /> 

     <Button android:onClick="false" android:id="@+id/answer2" 
      android:layout_width="150dip" />  
     <Button android:onClick="false" android:id="@+id/answer3" 
      android:layout_width="150dip"/> 
     <Button android:onClick="false" android:id="@+id/answer4" 
      android:layout_width="150dip" />  
    </RadioGroup> 
</LinearLayout> 

МОЙ DBHelper.java

public class DBHelper extends SQLiteOpenHelper{ 

//The Android's default system path of your application database. 

private static String DB_PATH = "/data/data/com.starchazer.cyk/databases/"; 
private static String DB_NAME = "questionsDb"; 
private SQLiteDatabase myDataBase; 
private final Context myContext; 

/** 
* Constructor 
* Takes and keeps a reference of the passed context in order to access to the application assets and resources. 
* @param context 
*/ 
public DBHelper(Context context) { 
    super(context, DB_NAME, null, 1); 
    this.myContext = context; 
} 

/** 
* Creates a empty database on the system and rewrites it with your own database. 
* */ 
public void createDataBase() throws IOException{ 

    boolean dbExist = checkDataBase(); 
    if(!dbExist) 
    { 
     //By calling this method and empty database will be created into the default system path 
     //of your application so we are gonna be able to overwrite that database with our database. 
     this.getReadableDatabase(); 

     try { 
      copyDataBase(); 
     } catch (IOException e) { 
      throw new Error("Error copying database"); 
     } 
    } 
} 

/** 
* Check if the database already exist to avoid re-copying the file each time you open the application. 
* @return true if it exists, false if it doesn't 
*/ 
private boolean checkDataBase(){ 
    SQLiteDatabase checkDB = null; 
    try{ 
     String myPath = DB_PATH + DB_NAME; 
     checkDB = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY); 
    }catch(SQLiteException e){ 
     //database does't exist yet. 
    } 
    if(checkDB != null){ 
     checkDB.close(); 
    } 

    return checkDB != null ? true : false; 
} 

/** 
* Copies your database from your local assets-folder to the just created empty database in the 
* system folder, from where it can be accessed and handled. 
* This is done by transfering bytestream. 
* */ 
private void copyDataBase() throws IOException{ 

    //Open your local db as the input stream 
    InputStream myInput = myContext.getAssets().open(DB_NAME); 

    // Path to the just created empty db 
    String outFileName = DB_PATH + DB_NAME; 

    //Open the empty db as the output stream 
    OutputStream myOutput = new FileOutputStream(outFileName); 

    //transfer bytes from the inputfile to the outputfile 
    byte[] buffer = new byte[1024]; 
    int length; 
    while ((length = myInput.read(buffer))>0){ 
     myOutput.write(buffer, 0, length); 
    } 

    //Close the streams 
    myOutput.flush(); 
    myOutput.close(); 
    myInput.close(); 

} 

public void openDataBase() throws SQLException{ 
    //Open the database 
    String myPath = DB_PATH + DB_NAME; 
    myDataBase = SQLiteDatabase.openDatabase(myPath, null, SQLiteDatabase.OPEN_READONLY); 
} 

@Override 
public synchronized void close() { 
    if(myDataBase != null) 
     myDataBase.close(); 
    super.close(); 
} 

@Override 
public void onCreate(SQLiteDatabase db) { 
} 

@Override 
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { 
} 

// Add your public helper methods to access and get content from the database. 
// You could return cursors by doing "return myDataBase.query(....)" so it'd be easy 
// to you to create adapters for your views. 




public List<Question> getQuestionSet(int difficulty, int numQ){ 
    List<Question> questionSet = new ArrayList<Question>(); 
    Cursor c = myDataBase.rawQuery("SELECT * FROM QUESTIONS WHERE DIFFICULTY=" + difficulty + 
      " ORDER BY RANDOM() LIMIT " + numQ, null); 
    while (c.moveToNext()){ 
     //Log.d("QUESTION", "Question Found in DB: " + c.getString(1)); 
     Question q = new Question(); 
     q.setQuestion(c.getString(1)); 
     q.setAnswer(c.getString(2)); 
     q.setOption1(c.getString(3)); 
     q.setOption2(c.getString(4)); 
     q.setOption3(c.getString(5)); 
     q.setRating(difficulty); 
     questionSet.add(q); 
    } 
    return questionSet; 
} 
} 

МОЙ QuestionActivity

public class QuestionActivity extends Activity implements OnClickListener{ 

private Question currentQ; 
private GamePlay currentGame; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.question); 
    /** 
    * Configure current game and get question 
    */ 



    currentGame = ((XYZ_Application)getApplication()).getCurrentGame(); 
    currentQ = currentGame.getNextQuestion(); 
    Button c1 = (Button) findViewById(R.id.answer1); 
    c1.setOnClickListener(this); 
    Button c2 = (Button) findViewById(R.id.answer2); 
    c2.setOnClickListener(this); 
    Button c3 = (Button) findViewById(R.id.answer3); 
    c3.setOnClickListener(this); 
    Button c4 = (Button) findViewById(R.id.answer4); 
    c4.setOnClickListener(this); 

    /** 
    * Update the question and answer options.. 
    */ 
    setQuestions(); 

} 


/** 
* Method to set the text for the question and answers from the current games 
* current question 
*/ 
private void setQuestions() { 
    //set the question text from current question 
    String question = Utility.capitalise(currentQ.getQuestion()) + "?"; 
    TextView qText = (TextView) findViewById(R.id.question); 
    qText.setText(question); 

    //set the available options 
    List<String> answers = currentQ.getQuestionOptions(); 
    TextView option1 = (TextView) findViewById(R.id.answer1); 
    option1.setText(Utility.capitalise(answers.get(0))); 

    TextView option2 = (TextView) findViewById(R.id.answer2); 
    option2.setText(Utility.capitalise(answers.get(1))); 

    TextView option3 = (TextView) findViewById(R.id.answer3); 
    option3.setText(Utility.capitalise(answers.get(2))); 

    TextView option4 = (TextView) findViewById(R.id.answer4); 
    option4.setText(Utility.capitalise(answers.get(3))); 
} 


@Override 
public void onClick(View arg0) { 


    /** 
    * validate a buttonselected has been selected 
    */  
    if (!checkAnswer()) return; 


    /** 
    * check if end of game 
    */ 
    if (currentGame.isGameOver()){ 


     Intent i = new Intent(this, Main.class); 
     startActivity(i); 
     finish(); 
    } 
    else{ 
     Intent i = new Intent(this, QuestionActivity.class); 
     startActivity(i); 
     finish(); 
    } 
} 


@Override 
public boolean onKeyDown(int keyCode, KeyEvent event) 
{ 
    switch (keyCode) 
    { 
    case KeyEvent.KEYCODE_BACK : 
     return true; 
    } 

    return super.onKeyDown(keyCode, event); 
} 


/** 
* Check if a checkbox has been selected, and if it 
* has then check if its correct and update gamescore 
*/ 
private boolean checkAnswer() { 
    String answer = getSelectedAnswer(); 
    if (answer==null){ 

     return false; 
    } 
    else { 

     if (currentQ.getAnswer().equalsIgnoreCase(answer)) 
     { 
      //Log.d("Questions", "Correct Answer!"); 
      currentGame.incrementRightAnswers(); 
     } 
     else{ 
      //Log.d("Questions", "Incorrect Answer!"); 
      currentGame.incrementWrongAnswers(); 
     } 
     return true; 
    } 
} 


/** 
* 
*/ 
private String getSelectedAnswer() { 
    Button c1 = (Button)findViewById(R.id.answer1); 
    Button c2 = (Button)findViewById(R.id.answer2); 
    Button c3 = (Button)findViewById(R.id.answer3); 
    Button c4 = (Button)findViewById(R.id.answer4); 
    if (c1.callOnClick()) 
    { 
     return c1.getText().toString(); 
    } 
    if (c2.callOnClick()) 
    { 
     return c2.getText().toString(); 
    } 
    if (c3.callOnClick()) 
    { 
     return c3.getText().toString(); 
    } 
    if (c4.callOnClick()) 
    { 
     return c4.getText().toString(); 
    } 

    return null; 
} 


} 

Answer 1

Я жалею, что не будет давать код здесь.

Вот что я сделал бы Когда Actvity Запускает

1. нагрузки Вопрос от Db с опциональными
2. Я буду предпочитаю вариант, как массив/ArrayList
3. Присвоить Text Option для каждой кнопки

4. Добавить общий приемник onclick, такой как this

   public void onClick(View v){ 
   int id=v.getId(); 
   String answer=v.getText(); 
   if(answer.equals('ANSWER FROM DB'){ 
   // If right then next question 
   // Else to MainActivity 
       } 
   
   /**switch(id){ 
       case R.id.answer1: 
        processAnswer(1); 
   
        break; 
       case R.id.answer2: 
        processAnswer(2); 
        break; 
       // So on 
       } 
   **/ 
   } 
   

И processAnswer будет выглядеть

void processAnswer(int option){ 
// Since I have the option here 
// I will check it with Database 
// If its correct then next question else exit 
}