Java 在Android游戏中添加问题的问题

我是Android Studio和Java的初学者，我的第一个Android应用程序几乎已经完成，但是，我试图添加5个以上的问题，但当我添加问题6时，它没有显示出来。下面是我的DbHelper.java类的代码：

package com.example.triviality;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class DbHelper extends SQLiteOpenHelper {
    private static final int DATABASE_VERSION = 1;
    // Database Name
    private static final String DATABASE_NAME = "triviaQuiz";
    // tasks table name
    private static final String TABLE_QUEST = "quest";
    // tasks Table Columns names
    private static final String KEY_ID = "id";
    private static final String KEY_QUES = "question";
    private static final String KEY_ANSWER = "answer"; //correct option
    private static final String KEY_OPTA= "opta"; //option a
    private static final String KEY_OPTB= "optb"; //option b
    private static final String KEY_OPTC= "optc"; //option c
    private SQLiteDatabase dbase;
    public DbHelper(Context context) {
        super(context, DATABASE_NAME, null, DATABASE_VERSION);
    }
    @Override
    public void onCreate(SQLiteDatabase db) {
        dbase=db;
        String sql = "CREATE TABLE IF NOT EXISTS " + TABLE_QUEST + " ( "
                + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_QUES
                + " TEXT, " + KEY_ANSWER+ " TEXT, "+KEY_OPTA +" TEXT, "
                +KEY_OPTB +" TEXT, "+KEY_OPTC+" TEXT)";
        db.execSQL(sql);
        addQuestions();
        db.close();
    }
    private void addQuestions()
    {
        Question q1=new Question("Which company is the largest manufacturer" +
                " of network equipment?","HP", "IBM", "CISCO", "CISCO");
        this.addQuestion(q1);
        Question q2=new Question("Which of the following is NOT " +
                "an operating system?", "SuSe", "BIOS", "DOS", "BIOS");
        this.addQuestion(q2);
        Question q3=new Question("Which of the following is the fastest" +
                " writable memory?","RAM", "FLASH","Register","Register");
        this.addQuestion(q3);
        Question q4=new Question("Which of the following device" +
                " regulates internet traffic?", "Router", "Bridge", "Hub","Router");
        this.addQuestion(q4);
        Question q5=new Question("Which of the following is NOT an" +
                " interpreted language?","Ruby","Python","BASIC","BASIC");
        this.addQuestion(q5);
        Question q6 = new Question("2+2 is equal to" +
                " which of the following?","0","22","4","4");
        this.addQuestion(q6);
    }
    @Override
    public void onUpgrade(SQLiteDatabase db, int oldV, int newV) {
        // Drop older table if existed
        db.execSQL("DROP TABLE IF EXISTS " + TABLE_QUEST);
        // Create tables again
        onCreate(db);
    }
    // Adding new question
    public void addQuestion(Question quest) {
        //SQLiteDatabase db = this.getWritableDatabase();
        ContentValues values = new ContentValues();
        values.put(KEY_QUES, quest.getQUESTION());
        values.put(KEY_ANSWER, quest.getANSWER());
        values.put(KEY_OPTA, quest.getOPTA());
        values.put(KEY_OPTB, quest.getOPTB());
        values.put(KEY_OPTC, quest.getOPTC());
        // Inserting Row
        dbase.insert(TABLE_QUEST, null, values);
    }
    public List<Question> getAllQuestions() {
        List<Question> quesList = new ArrayList<Question>();
        // Select All Query
        String selectQuery = "SELECT  * FROM " + TABLE_QUEST;
        dbase=this.getReadableDatabase();
        Cursor cursor = dbase.rawQuery(selectQuery, null);
        // looping through all rows and adding to list
        if (cursor.moveToFirst()) {
            do {
                Question quest = new Question();
                quest.setID(cursor.getInt(0));
                quest.setQUESTION(cursor.getString(1));
                quest.setANSWER(cursor.getString(2));
                quest.setOPTA(cursor.getString(3));
                quest.setOPTB(cursor.getString(4));
                quest.setOPTC(cursor.getString(5));
                quesList.add(quest);
            } while (cursor.moveToNext());
        }
        // return quest list
        return quesList;
    }
    public int rowcount()
    {
        int row=0;
        String selectQuery = "SELECT  * FROM " + TABLE_QUEST;
        SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);
        row=cursor.getCount();
        return row;
    }
}

在这个问题上，我尝试添加问题6，但没有显示：

private void addQuestions()
    {
        Question q1=new Question("Which company is the largest manufacturer" +
                " of network equipment?","HP", "IBM", "CISCO", "CISCO");
        this.addQuestion(q1);
        Question q2=new Question("Which of the following is NOT " +
                "an operating system?", "SuSe", "BIOS", "DOS", "BIOS");
        this.addQuestion(q2);
        Question q3=new Question("Which of the following is the fastest" +
                " writable memory?","RAM", "FLASH","Register","Register");
        this.addQuestion(q3);
        Question q4=new Question("Which of the following device" +
                " regulates internet traffic?", "Router", "Bridge", "Hub","Router");
        this.addQuestion(q4);
        Question q5=new Question("Which of the following is NOT an" +
                " interpreted language?","Ruby","Python","BASIC","BASIC");
        this.addQuestion(q5);
        Question q6 = new Question("2+2 is equal to" +
                " which of the following?","0","22","4","4");
        this.addQuestion(q6);
    }

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谁能帮帮我吗？我使用的教程就是从这里开始的，我使用的代码也可以从这里获得。

我想你的问题在于这段代码

---

public void onClick（View v）{…如果（qidBy

没有显示

你的意思是你没有看到数据库中的问题吗？你需要发布更多的代码并更好地解释。例如什么

addQuestion（）

实际上是这样的，你是如何尝试显示这些的。codeMagic不，我的意思是它在我运行应用程序时不会显示，我发布了更多的代码这对于一个简单的静态修复是正确的，但是对于一些更动态的东西，他可以做一些类似于

if（qid

（这是一个完整的假设，因为我没有像您那样深入研究代码：P）@zgc7009同意，只是不想为初学者添加太多内容。：-）感谢您的帮助，但现在，该应用程序正在向我抛出一个致命异常IndexOutOfBounds异常，无效索引5大小为5。我现在该怎么办？我想您需要调试该应用程序，我现在不能作为人工调试器。：P）

private void addQuestions()
    {
        Question q1=new Question("Which company is the largest manufacturer" +
                " of network equipment?","HP", "IBM", "CISCO", "CISCO");
        this.addQuestion(q1);
        Question q2=new Question("Which of the following is NOT " +
                "an operating system?", "SuSe", "BIOS", "DOS", "BIOS");
        this.addQuestion(q2);
        Question q3=new Question("Which of the following is the fastest" +
                " writable memory?","RAM", "FLASH","Register","Register");
        this.addQuestion(q3);
        Question q4=new Question("Which of the following device" +
                " regulates internet traffic?", "Router", "Bridge", "Hub","Router");
        this.addQuestion(q4);
        Question q5=new Question("Which of the following is NOT an" +
                " interpreted language?","Ruby","Python","BASIC","BASIC");
        this.addQuestion(q5);
        Question q6 = new Question("2+2 is equal to" +
                " which of the following?","0","22","4","4");
        this.addQuestion(q6);
    }