由於某種原因，數據沒有存儲在SQLite數據庫中？錯誤

我試圖在一個新的我的sql數據庫中存儲一些數據，並得到logcat錯誤，說該表不存在，儘管我創建了一個方法來做到這一點。這是我的代碼！由於某種原因，數據沒有存儲在SQLite數據庫中？錯誤

DataBaseHelper2.java -

package com.example.david.myview3; 

/** 
* Created by David on 23/03/2017. 
*/ 

import android.content.Context; 
import android.database.sqlite.SQLiteDatabase; 
import android.database.sqlite.SQLiteDatabase.CursorFactory; 
import android.database.sqlite.SQLiteOpenHelper; 
import android.util.Log; 

public class DataBaseHelper2 extends SQLiteOpenHelper { 
public DataBaseHelper2(Context context, String name, CursorFactory   factory, int version) { 
    super(context, name, factory, version); 
} 

// Called when no database exists in disk and the helper class needs 
// to create a new one. 
@Override 
public void onCreate(SQLiteDatabase _db) { 
    _db.execSQL(LoginDataBaseAdapter.DATABASE_CREATE1); 
    _db.execSQL(LoginDataBaseAdapter.DATABASE_CREATE2); 
    _db.execSQL(LoginDataBaseAdapter.DATABASE_CREATE3); 
    _db.execSQL(LoginDataBaseAdapter.DATABASE_CREATE4); 
    _db.execSQL(LoginDataBaseAdapter.DATABASE_CREATE5); 


} 

// Called when there is a database version mismatch meaning that the version 
// of the database on disk needs to be upgraded to the current version. 
@Override 
public void onUpgrade(SQLiteDatabase _db, int _oldVersion, int _newVersion) { 
    // Log the version upgrade. 
    Log.w("TaskDBAdapter", "Upgrading from version " + _oldVersion + " to " + _newVersion + ", which will destroy all old data"); 


    // Upgrade the existing database to conform to the new version. Multiple 
    // previous versions can be handled by comparing _oldVersion and _newVersion 
    // values. 
    // The simplest case is to drop the old table and create a new one. 
    _db.execSQL("DROP TABLE IF EXISTS " + "TEMPLATE"); 


    // Create a new one. 
    onCreate(_db); 
} 
}

SurveyDataBaseAdapter -

package com.example.david.myview3; 

/** 
* Created by David on 23/03/2017. 
*/ 

import android.content.ContentValues; 
import android.content.Context; 
import android.database.Cursor; 
import android.database.SQLException; 
import android.database.sqlite.SQLiteDatabase; 

public class SurveyDataBaseAdapter { 
static final String DATABASE_NAME = "survey.db"; 
static final int DATABASE_VERSION = 1; 
public static final int NAME_COLUMN = 1; 
// TODO: Create public field for each column in your table. 
// SQL Statement to create a new database. 
static final String DATABASE_CREATE1 = "create table " + "USER" + 
     "(" + "ID" + " integer primary key autoincrement," + "ID int,NAME text); "; 
static final String DATABASE_CREATE2 = "create table " + "QUESTION" + 
     "(" + "ID2" + " integer primary key autoincrement," + "QUESTION text,ANSWER1 text, ANSWER2 text, ANSWER3 text); "; 
static final String DATABASE_CREATE3 = "create table " + "RESPONSE" + 
     "(" + "ID3" + " integer primary key autoincrement," + "ID int,QUESTION text, ANSWER int); "; 

// Variable to hold the database instance 
public SQLiteDatabase db2; 
// Context of the application using the database. 
private final Context context; 
// Database open/upgrade helper 
private DataBaseHelper2 dbHelper2; 

public SurveyDataBaseAdapter(Context _context) { 
    context = _context; 
    dbHelper2= new DataBaseHelper2(context, DATABASE_NAME, null, DATABASE_VERSION); 
} 

public SurveyDataBaseAdapter open() throws SQLException { 
    db2 = dbHelper2.getWritableDatabase(); 
    return this; 
} 

public void close() { 
    db2.close(); 
} 

public SQLiteDatabase getDatabaseInstance() { 
    return db2; 
} 

public void insertQuestion(String question, String answerOne, String answerTwo, String answerThree) { 
    ContentValues newValues = new ContentValues(); 
    // Assign values for each row. 
    newValues.put("QUESTION", question); 
    newValues.put("ANSWER1", answerOne); 
    newValues.put("ANSWER2", answerTwo); 
    newValues.put("ANSWER3", answerThree); 
    // Insert the row into your table 
    db2.insert("QUESTION", null, newValues); 
    ///Toast.makeText(context, "Reminder Is Successfully Saved", Toast.LENGTH_LONG).show(); 
} 

//new try 

public void insertEntry2(String question, String answer) { 
    ContentValues newValues2 = new ContentValues(); 
    // Assign values for each row. 
    newValues2.put("QUESTION", question); 
    newValues2.put("ANSWER", answer); 

    // Insert the row into your table 
    db2.insert("SURVEY1", null, newValues2); 
    ///Toast.makeText(context, "Reminder Is Successfully Saved", Toast.LENGTH_LONG).show(); 
} 

public int deleteEntry(String UserName) { 
    //String id=String.valueOf(ID); 
    String where = "USERNAME=?"; 
    int numberOFEntriesDeleted = db2.delete("LOGIN", where, new String[]{UserName}); 
    // Toast.makeText(context, "Number fo Entry Deleted Successfully : "+numberOFEntriesDeleted, Toast.LENGTH_LONG).show(); 
    return numberOFEntriesDeleted; 
} 


public String[] getQuestion() { 

    final String TABLE_NAME = "QUESTION"; 

    String selectQuery = "SELECT * FROM " + TABLE_NAME; 
    SQLiteDatabase db = this.getDatabaseInstance(); 
    Cursor cursor = db2.rawQuery(selectQuery, null); 
    String[] data = null; 

    if(cursor.moveToFirst()) { 
     do { 
      // get the data into the array, or class variable 
     }while (cursor.moveToNext()); 
    } 

    cursor.close(); 
    return data; 
} 

public String getSingleEntry() 
{ 
    Cursor cursor=db2.query("QUESTION", null, null, null, null, null, null); 
    cursor.moveToFirst(); 
    String question= cursor.getString(cursor.getColumnIndex("QUESTION")); 
    cursor.close(); 
    return question; 
} 

public void updateEntry(String userName, String password) { 
    // Define the updated row content. 
    ContentValues updatedValues = new ContentValues(); 
    // Assign values for each row. 
    updatedValues.put("USERNAME", userName); 
    updatedValues.put("PASSWORD", password); 

    String where = "USERNAME = ?"; 
    db2.update("LOGIN", updatedValues, where, new String[]{userName}); 
} 

}

CreateSurveyActivity.java

package com.example.david.myview3; 

/** 
    * Created by David on 23/03/2017. 
*/ 

import android.app.Activity; 
import android.app.Dialog; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.Toast; 
import android.content.Context; 
import android.view.inputmethod.InputMethodManager; 


public class CreateSurveyActivity extends DashBoardAppActivity { 

EditText editQuestion, editAnswer1, editAnswer2, editAnswer3; 
Button btnNext, btnComplete; 
SurveyDataBaseAdapter SurveyDataBaseAdapter; 





@Override 
protected void onCreate(Bundle savedInstanceState) { 

    super.onCreate(savedInstanceState); 
    setContentView(R.layout.photoalbum); 

    // get Instance of Database Adapter 
    SurveyDataBaseAdapter = new SurveyDataBaseAdapter(this); 
    SurveyDataBaseAdapter = SurveyDataBaseAdapter.open(); 

    // Get References of Views 
    editQuestion = (EditText) findViewById(R.id.editTextQuestion); 
    editAnswer1 = (EditText) findViewById(R.id.editTextAnswer1); 
    editAnswer2 = (EditText) findViewById(R.id.editTextAnswer2); 
    editAnswer3 = (EditText) findViewById(R.id.editTextAnswer3); 

    // Get Refs of buttons 


    btnComplete = (Button) findViewById(R.id.buttonSignUP); 
} 


public void createSurvey(View V){ 

    final Dialog dialog = new Dialog(CreateSurveyActivity.this); 
    dialog.setContentView(R.layout.photoalbum); 
    dialog.setTitle("Create"); 

    // get the Refferences of views 
    final EditText editQuestion=(EditText)dialog.findViewById(R.id.editTextQuestion); 
    editQuestion.setOnFocusChangeListener(new View.OnFocusChangeListener() { 
     @Override 
     public void onFocusChange(View v, boolean hasFocus) { 
      if (!hasFocus) { 
       hideKeyboard(v); 
      } 
     } 
    }); 
    final EditText editAnswer1=(EditText)dialog.findViewById(R.id.editTextAnswer1); 
    editAnswer1.setOnFocusChangeListener(new View.OnFocusChangeListener() { 
     @Override 
     public void onFocusChange(View v, boolean hasFocus) { 
      if (!hasFocus) { 
       hideKeyboard(v); 
      } 
     } 
    }); 
    final EditText editAnswer2=(EditText)dialog.findViewById(R.id.editTextAnswer2); 
    editAnswer2.setOnFocusChangeListener(new View.OnFocusChangeListener() { 
     @Override 
     public void onFocusChange(View v, boolean hasFocus) { 
      if (!hasFocus) { 
       hideKeyboard(v); 
      } 
     } 
    }); 
    final EditText editAnswer3=(EditText)dialog.findViewById(R.id.editTextAnswer3); 
    editAnswer3.setOnFocusChangeListener(new View.OnFocusChangeListener() { 
     @Override 
     public void onFocusChange(View v, boolean hasFocus) { 
      if (!hasFocus) { 
       hideKeyboard(v); 
      } 
     } 
    }); 


    // Set On ClickListener 
    Button btnNext = (Button) dialog.findViewById(R.id.buttonNext); 
    btnNext.setOnClickListener(new View.OnClickListener() { 

     public void onClick(View v) { 
      // TODO Auto-generated method stub 

      String question = editQuestion.getText().toString(); 
      String answer1 = editAnswer1.getText().toString(); 
      String answer2 = editAnswer2.getText().toString(); 
      String answer3 = editAnswer3.getText().toString(); 

      // check if any of the fields are vaccant 
      if (question.equals("") || answer1.equals("") || answer2.equals("") || answer3.equals("")) { 
       Toast.makeText(getApplicationContext(), "Field Vaccant", Toast.LENGTH_LONG).show(); 
       return; 
      } 

      { 
       // Save the Data in Database 
       SurveyDataBaseAdapter.insertQuestion(question, answer1, answer2, answer3); 
       Toast.makeText(getApplicationContext(), "Question Successfully Created ", Toast.LENGTH_LONG).show(); 
      } 
     } 
    }); 
    dialog.show(); 

    // try to send home on complete button press 
    //* 
    //btnNext = (Button) findViewById(R.id.buttonNext); 
    // btnNext.setOnClickListener(new View.OnClickListener() { 

     // final Intent intent = new Intent(context, DashHomeActivity.class); 
     // 
    // }); 
} 

public void hideKeyboard(View view){ 
    InputMethodManager inputMethodManager =(InputMethodManager)getSystemService(Activity.INPUT_METHOD_SERVICE); 
    inputMethodManager.hideSoftInputFromWindow(view.getWindowToken(), 0); 
} 


@Override 
protected void onDestroy() { 
    // TODO Auto-generated method stub 
    super.onDestroy(); 

    SurveyDataBaseAdapter.close(); 
} 
}

的logcat -

04-17 20:26:41.408 14322-14322/com.example.david.myview3 E/SQLiteLog: (1)  no such table: QUESTION 

    04-17 20:26:41.408 14322-14322/com.example.david.myview3 E/SQLiteDatabase: Error inserting ... 
                      android.database.sqlite.SQLiteException: no such table: QUESTION (code 1): , while compiling: INSERT INTO QUESTION(QUESTION,ANSWER3,ANSWER2,ANSWER1) VALUES (?,?,?,?) 
                       at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
                       at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:919) 
                       at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:530) 
                       at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
                      at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
                      at android.database.sqlite.SQLiteStatement.<init>(SQLiteStatement.java:31) 
                      at android.database.sqlite.SQLiteDatabase.insertWithOnConflict(SQLiteDatabase.java:1547) 
                      at android.database.sqlite.SQLiteDatabase.insert(SQLiteDatabase.java:1404) 
                       at com.example.david.myview3.SurveyDataBaseAdapter.insertQuestion(SurveyDataBase Adapter.java:59) 
                       at com.example.david.myview3.CreateSurveyActivity$5.onClick(CreateSurveyActivity .java:117) 
                       at android.view.View.performClick(View.java:4785) 
                       at android.view.View$PerformClick.run(View.java:19869) 
                       at android.os.Handler.handleCallback(Handler.java:739) 
                       at android.os.Handler.dispatchMessage(Handler.java:95) 
                       at android.os.Looper.loop(Looper.java:155) 
                       at android.app.ActivityThread.main(ActivityThread.java:5696) 
                       at java.lang.reflect.Method.invoke(Native Method) 
                       at java.lang.reflect.Method.invoke(Method.java:372) 
                       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:10 28) 
                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:823)

來源

2017-04-17 Dave95

請張貼logcat的輸出.. .. – Opiatefuchs

並且爲了創建你正在使用'（LoginDataBaseAdapter.DATABASE_CREATE1）'的表'但你還沒有發佈'LoginDataBaseAdap ter'，只是'SurveyDataBaseAdapter' – Opiatefuchs

修正了這個錯誤併發布了logcat。 – Dave95

使用SurveyDataBaseAdapter.DATABASE_CREATE1而不是LoginDataBaseAdapter.DATABASE_CREATE1。

在你DataBaseHelper2.java，更新onCreate()方法如下：

@Override 
public void onCreate(SQLiteDatabase _db) { 
    _db.execSQL(SurveyDataBaseAdapter.DATABASE_CREATE1); 
    _db.execSQL(SurveyDataBaseAdapter.DATABASE_CREATE2); 
    _db.execSQL(SurveyDataBaseAdapter.DATABASE_CREATE3); 
}

在你SurveyDataBaseAdapter，更新SQL表創建如下聲明：

static final String DATABASE_CREATE1 = "CREATE TABLE " + "USER" + "(" + 
     "ID INTEGER PRIMARY KEY AUTOINCREMENT, " + 
     "ID1 INTEGER, " + "NAME TEXT " + ")"; 
static final String DATABASE_CREATE2 = "CREATE TABLE " + "QUESTION" + "(" + 
     "ID2 INTEGER PRIMARY KEY AUTOINCREMENT, " + 
     "QUESTION TEXT, " + "ANSWER1 TEXT, " + "ANSWER2 TEXT, " + "ANSWER3 TEXT " + ")"; 
static final String DATABASE_CREATE3 = "CREATE TABLE " + "RESPONSE" + "(" + 
     "ID3 INTEGER PRIMARY KEY AUTOINCREMENT, " + 
     "ID INTEGER, " + "QUESTION TEXT, " + "ANSWER INTEGER " + ")";

來源

2017-04-17 18:36:59 FAT

修復了這個，但仍然錯誤，我發佈了logcat。謝謝。 – Dave95

請嘗試我更新的答案。根據我的答案中提到的更新sql語句 – FAT

由於某種原因，數據沒有存儲在SQLite數據庫中？錯誤

回答

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