android.database.sqlite.SQLiteException:没有这样的表：（代码1）
您好，经过三天的浏览、调试，我找不到错误的原因 我使用SQLite DB浏览器扩展名firefox创建了数据库 我添加了我的资产（但它在ndroid studio中DB名称左侧的图标中显示了一个问号） 浏览了几天之后，我尝试更改版本，更改数据库名称和扩展名，尝试将“this.getReadableDatabase（）；”更改为“this.getWriteableDatabase（）；”，反之亦然 但我还是得到了一些人引导我的错误android.database.sqlite.SQLiteException:没有这样的表：（代码1）,android,sqlite,android-sqlite,sqliteopenhelper,Android,Sqlite,Android Sqlite,Sqliteopenhelper,您好，经过三天的浏览、调试，我找不到错误的原因 我使用SQLite DB浏览器扩展名firefox创建了数据库 我添加了我的资产（但它在ndroid studio中DB名称左侧的图标中显示了一个问号） 浏览了几天之后，我尝试更改版本，更改数据库名称和扩展名，尝试将“this.getReadableDatabase（）；”更改为“this.getWriteableDatabase（）；”，反之亦然 但我还是得到了一些人引导我的错误 java.lang.RuntimeException: Unabl
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jalil.justquiz/com.jalil.justquiz.MainActivity}: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
package com.jalil.justquiz;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
/*
* Created by Jalil on 14-11-2015.
*/
public class DatabaseOpenHelper extends SQLiteOpenHelper{
public static String DATABASE_NAME = "";
private static final int DATABASE_VERSION = 3;
private static final String QUIZ_USER_DETAILS_TABLE = "quiz_user_details";
private static final String COLUMN_USERCOUNT = "User_Count";
private static final String COLUMN_USERNAME = "User_Name";
private static final String COLUMN_USRID = "User_Id";
private static final String COLUMN_USERSCORE = "User_Score";
private static final String QUIZ_TITLE_TABLE = "quiz_title";
private static final String COLUMN_QUIZTITLEID = "_id";
private static final String COLUMN_QUIZTITLE = "quiz_title";
private static final String QUIZ_QUESTION_TABLE = "quiz_question";
private static final String COLUMN_QUESTION_ID = "_id";
private static final String COLUMN_QUESTION_TITLE_ID = "quiz_title_id";
private static final String COLUMN_QUESTION = "quiz_question";
private static final String COLUMN_QUESTION_ANSWERED = "quiz_question_answered";
private static final String COLUMN_QUESTION_ANSWERED_CORRECT = "quiz_question_answered_correct";
private static final String QUIZ_OPTION_TABLE = "quiz_option";
private static final String COLUMN_OPTION_ID = "_id";
private static final String COLUMN_OPTION_QUESTION_ID = "quiz_question_id";
private static final String COLUMN_OPTION_1 = "quiz_option_1";
private static final String COLUMN_OPTION_2 = "quiz_option_2";
private static final String COLUMN_OPTION_3 = "quiz_option_3";
private static final String COLUMN_OPTION_4 = "quiz_option_4";
private static final String COLUMN_CORRECT_OPTION = "quiz_correct_option";
// private static final String QUIZ_USER_ANSWER_TABLE = "quiz_user_answer";
// private static final String QUIZ_USER_ANSWER__ID = "quiz_user_answer";
// private static final String QUIZ_USER_ANSWER__OPTION = "quiz_option_id";
private SQLiteDatabase database;
private final Context context;
// database path
private static String DATABASE_PATH;
/** constructor */
public DatabaseOpenHelper(Context ctx,String databaseName) {
super(ctx, databaseName, null, DATABASE_VERSION);
DATABASE_NAME = databaseName;
this.context = ctx;
//DATABASE_PATH = context.getDatabasePath(DATABASE_NAME).getPath() ;
DATABASE_PATH = context.getApplicationInfo().dataDir + "/databases/";
}
/**
* Creates a empty database on the system and rewrites it with your own
* database.
* */
public void create() throws IOException {
boolean dbExist = checkDataBase();
if (dbExist) {
} else {
SQLiteDatabase db = this.getReadableDatabase();
if (db.isOpen()){
db.close();
}
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 = DATABASE_PATH + DATABASE_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);
} 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 = context.getAssets().open(DATABASE_NAME);
// Path to the just created empty db
String outFileName = DATABASE_PATH + DATABASE_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();
}
/** open the database */
public void open() throws SQLException {
String myPath = DATABASE_PATH + DATABASE_NAME;
database = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);
}
/** close the database */
@Override
public synchronized void close() {
if (database != null)
database.close();
super.close();
}
//region User Detail Table
// insert a user into the database
public long insert_QUIZ_USER_DETAILS(int usrCount, String usrName, int userId,int userScore) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_USERCOUNT, usrCount);
initialValues.put(COLUMN_USERNAME, usrName);
initialValues.put(COLUMN_USRID, userId);
initialValues.put(COLUMN_USERSCORE, userScore);
return database.insert(QUIZ_USER_DETAILS_TABLE, null, initialValues);
}
// updates a user
public boolean update_QUIZ_USER_DETAILS(int rowId,int usrCount, String usrName, int userId,int userScore) {
ContentValues args = new ContentValues();
args.put(COLUMN_USERCOUNT, usrCount);
args.put(COLUMN_USERNAME, usrName);
args.put(COLUMN_USRID, userId);
args.put(COLUMN_USERSCORE, userScore);
return database.update(QUIZ_USER_DETAILS_TABLE, args, COLUMN_USRID + "=" + rowId, null) > 0;
}
// retrieves a particular user
public Cursor get_QUIZ_USER_DETAILS(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_USER_DETAILS_TABLE, new String[] {
COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE },
// COLUMN_USERCOUNT, COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE },
COLUMN_USRID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular user
public boolean delete_SELECTED_QUIZ_USER_DETAILS(long rowId) {
return database.delete(QUIZ_USER_DETAILS_TABLE, COLUMN_USRID + "=" + rowId, null) > 0;
}
// retrieves all users
public Cursor getAll_QUIZ_USER_DETAILS() {
return database.query(QUIZ_USER_DETAILS_TABLE, new String[] {
COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE }, null, null,
// COLUMN_USERCOUNT,COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE }, null, null,
null, null, null);
}
//endregion
//region Quiz Title
// insert a quiz title
public long insert_QUIZ_TITLE(int quizTitleId, String quizTitle) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_QUIZTITLEID, quizTitleId);
initialValues.put(COLUMN_QUIZTITLE, quizTitle);
return database.insert(QUIZ_TITLE_TABLE, null, initialValues);
}
// updates a quiz title
public boolean update_QUIZ_TITLE(int rowId,int quizTitleId, String quizTitle) {
ContentValues args = new ContentValues();
args.put(COLUMN_QUIZTITLEID, quizTitleId);
args.put(COLUMN_QUIZTITLE, quizTitle);
return database.update(QUIZ_TITLE_TABLE, args, COLUMN_QUIZTITLEID + "=" + rowId, null) > 0;
}
// retrieves a quiz title
public Cursor get_QUIZ_TITLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_TITLE_TABLE, new String[] {
COLUMN_QUIZTITLE, },
COLUMN_QUIZTITLEID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz title
public boolean delete_SELECTED_QUIZ_TITLE(long rowId) {
return database.delete(QUIZ_TITLE_TABLE, COLUMN_QUIZTITLEID + "=" + rowId, null) > 0;
}
// retrieves all quiz titles
public Cursor getAll_QUIZ_TITLE() {
return database.query(QUIZ_TITLE_TABLE, new String[] { COLUMN_QUIZTITLE }, null, null,
null, null, null);
}
//endregion
//region Quiz Question
// insert a quiz Question
public long insert_QUIZ_QUESTION_TABLE(int quizQuestionId,int quizQuestionTitleId, String quizQuestion,int quizAnswered,int quizAnsweredCorct) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_QUESTION_ID, quizQuestionId);
initialValues.put(COLUMN_QUESTION_TITLE_ID, quizQuestionTitleId);
initialValues.put(COLUMN_QUESTION, quizQuestion);
initialValues.put(COLUMN_QUESTION_ANSWERED, quizAnswered);
initialValues.put(COLUMN_QUESTION_ANSWERED_CORRECT, quizAnsweredCorct);
return database.insert(QUIZ_QUESTION_TABLE, null, initialValues);
}
// updates a quiz Question
public boolean update_QUIZ_QUESTION_TABLE(long rowId,int quizQuestionId,int quizQuestionTitleId, String quizQuestion,int quizAnswered,int quizAnsweredCorct) {
ContentValues args = new ContentValues();
args.put(COLUMN_QUESTION_ID, quizQuestionId);
args.put(COLUMN_QUESTION_TITLE_ID, quizQuestionId);
args.put(COLUMN_QUESTION, quizQuestion);
args.put(COLUMN_QUESTION_ANSWERED, quizAnswered);
args.put(COLUMN_QUESTION_ANSWERED_CORRECT, quizAnsweredCorct);
return database.update(QUIZ_QUESTION_TABLE, args, COLUMN_QUESTION_ID + "=" + rowId, null) > 0;
}
// retrieves a quiz Question
public Cursor get_QUIZ_QUESTION_TABLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_QUESTION_TABLE, new String[] {
COLUMN_QUESTION_TITLE_ID,COLUMN_QUESTION,COLUMN_QUESTION_ANSWERED,COLUMN_QUESTION_ANSWERED_CORRECT },
COLUMN_QUESTION_ID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz Question
public boolean delete_SELECTED_QUIZ_QUESTION_TABLE(long rowId) {
return database.delete(QUIZ_QUESTION_TABLE, COLUMN_QUESTION_ID + "=" + rowId, null) > 0;
}
// retrieves all quiz Questions
public Cursor getAll_QUIZ_QUESTION_TABLE() {
return database.query(QUIZ_QUESTION_TABLE, new String[] { COLUMN_QUESTION }, null, null,
null, null, null);
}
//endregion
//region Quiz Options
// insert quiz Options
public long insert_QUIZ_OPTION_TABLE(int quizOptionId,int quizQuestionId, String quizOption_1, String quizOption_2, String quizOption_3, String quizOption_4,int quizCorrectOption) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_OPTION_ID, quizOptionId);
initialValues.put(COLUMN_OPTION_QUESTION_ID, quizQuestionId);
initialValues.put(COLUMN_OPTION_1, quizOption_1);
initialValues.put(COLUMN_OPTION_2, quizOption_2);
initialValues.put(COLUMN_OPTION_3, quizOption_3);
initialValues.put(COLUMN_OPTION_4, quizOption_4);
initialValues.put(COLUMN_CORRECT_OPTION, quizCorrectOption);
return database.insert(QUIZ_OPTION_TABLE, null, initialValues);
}
// updates a quiz Options
public boolean update_QUIZ_OPTION_TABLE(long rowId, int quizOptionId,int quizQuestionId, String quizOption_1, String quizOption_2, String quizOption_3, String quizOption_4,int quizCorrectOption) {
ContentValues args = new ContentValues();
args.put(COLUMN_OPTION_ID, quizOptionId);
args.put(COLUMN_OPTION_QUESTION_ID, quizQuestionId);
args.put(COLUMN_OPTION_1, quizOption_1);
args.put(COLUMN_OPTION_2, quizOption_2);
args.put(COLUMN_OPTION_3, quizOption_3);
args.put(COLUMN_OPTION_4, quizOption_4);
args.put(COLUMN_CORRECT_OPTION, quizCorrectOption);
return database.update(QUIZ_OPTION_TABLE, args, COLUMN_OPTION_ID + "=" + rowId, null) > 0;
}
// retrieves a quiz Options
public Cursor get_QUIZ_OPTION_TABLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_OPTION_TABLE, new String[] {
COLUMN_OPTION_1,COLUMN_OPTION_2,COLUMN_OPTION_3, COLUMN_OPTION_4,COLUMN_CORRECT_OPTION },
COLUMN_OPTION_ID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz Option
public boolean delete_SELECTED_QUIZ_OPTION_TABLE(long rowId) {
return database.delete(QUIZ_OPTION_TABLE, COLUMN_OPTION_ID + "=" + rowId, null) > 0;
}
// retrieves all quiz Option
public Cursor getAll_QUIZ_OPTION_TABLE() {
return database.query(QUIZ_OPTION_TABLE, new String[] { COLUMN_QUESTION }, null, null,
null, null, null);
}
//endregion
@Override
public void onCreate(SQLiteDatabase arg0) {
// TODO Auto-generated method stub
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
}
11-16 22:51:39.537 16947-16947/com.jalil.justquiz E/SQLiteLog﹕ (1) no such table: quiz_title
11-16 22:51:39.577 16947-16947/com.jalil.justquiz E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.jalil.justquiz, PID: 16947
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jalil.justquiz/com.jalil.justquiz.MainActivity}: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1161)
at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1032)
at com.jalil.justquiz.DatabaseOpenHelper.get_QUIZ_TITLE(DatabaseOpenHelper.java:230)
at com.jalil.justquiz.MainActivity.onCreate(MainActivity.java:37)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
package com.jalil.justquiz;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import java.io.IOException;
import android.widget.Toast;
import android.app.Activity;
import android.database.Cursor;
import android.database.SQLException;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
DatabaseOpenHelper myDbHelper = new DatabaseOpenHelper(this,"QUIZ_db.sqlite");
try {
// check if database exists in app path, if not copy it from assets
myDbHelper.create();
}
catch(IOException ioe) {
throw new Error("Unable to create database");
}
try {
// open the database
myDbHelper.open();
myDbHelper.getWritableDatabase();
} catch (SQLException sqle) {
throw sqle;
}
// retrieve a particular question
Cursor c = myDbHelper.get_QUIZ_TITLE(1);
Toast.makeText(this, "id: " + c.getInt(0) , Toast.LENGTH_LONG).show();
c.close();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
package com.jalil.justquiz;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
/*
* Created by Jalil on 14-11-2015.
*/
public class DatabaseOpenHelper extends SQLiteOpenHelper{
public static String DATABASE_NAME = "";
private static final int DATABASE_VERSION = 3;
private static final String QUIZ_USER_DETAILS_TABLE = "quiz_user_details";
private static final String COLUMN_USERCOUNT = "User_Count";
private static final String COLUMN_USERNAME = "User_Name";
private static final String COLUMN_USRID = "User_Id";
private static final String COLUMN_USERSCORE = "User_Score";
private static final String QUIZ_TITLE_TABLE = "quiz_title";
private static final String COLUMN_QUIZTITLEID = "_id";
private static final String COLUMN_QUIZTITLE = "quiz_title";
private static final String QUIZ_QUESTION_TABLE = "quiz_question";
private static final String COLUMN_QUESTION_ID = "_id";
private static final String COLUMN_QUESTION_TITLE_ID = "quiz_title_id";
private static final String COLUMN_QUESTION = "quiz_question";
private static final String COLUMN_QUESTION_ANSWERED = "quiz_question_answered";
private static final String COLUMN_QUESTION_ANSWERED_CORRECT = "quiz_question_answered_correct";
private static final String QUIZ_OPTION_TABLE = "quiz_option";
private static final String COLUMN_OPTION_ID = "_id";
private static final String COLUMN_OPTION_QUESTION_ID = "quiz_question_id";
private static final String COLUMN_OPTION_1 = "quiz_option_1";
private static final String COLUMN_OPTION_2 = "quiz_option_2";
private static final String COLUMN_OPTION_3 = "quiz_option_3";
private static final String COLUMN_OPTION_4 = "quiz_option_4";
private static final String COLUMN_CORRECT_OPTION = "quiz_correct_option";
// private static final String QUIZ_USER_ANSWER_TABLE = "quiz_user_answer";
// private static final String QUIZ_USER_ANSWER__ID = "quiz_user_answer";
// private static final String QUIZ_USER_ANSWER__OPTION = "quiz_option_id";
private SQLiteDatabase database;
private final Context context;
// database path
private static String DATABASE_PATH;
/** constructor */
public DatabaseOpenHelper(Context ctx,String databaseName) {
super(ctx, databaseName, null, DATABASE_VERSION);
DATABASE_NAME = databaseName;
this.context = ctx;
//DATABASE_PATH = context.getDatabasePath(DATABASE_NAME).getPath() ;
DATABASE_PATH = context.getApplicationInfo().dataDir + "/databases/";
}
/**
* Creates a empty database on the system and rewrites it with your own
* database.
* */
public void create() throws IOException {
boolean dbExist = checkDataBase();
if (dbExist) {
} else {
SQLiteDatabase db = this.getReadableDatabase();
if (db.isOpen()){
db.close();
}
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 = DATABASE_PATH + DATABASE_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);
} 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 = context.getAssets().open(DATABASE_NAME);
// Path to the just created empty db
String outFileName = DATABASE_PATH + DATABASE_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();
}
/** open the database */
public void open() throws SQLException {
String myPath = DATABASE_PATH + DATABASE_NAME;
database = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);
}
/** close the database */
@Override
public synchronized void close() {
if (database != null)
database.close();
super.close();
}
//region User Detail Table
// insert a user into the database
public long insert_QUIZ_USER_DETAILS(int usrCount, String usrName, int userId,int userScore) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_USERCOUNT, usrCount);
initialValues.put(COLUMN_USERNAME, usrName);
initialValues.put(COLUMN_USRID, userId);
initialValues.put(COLUMN_USERSCORE, userScore);
return database.insert(QUIZ_USER_DETAILS_TABLE, null, initialValues);
}
// updates a user
public boolean update_QUIZ_USER_DETAILS(int rowId,int usrCount, String usrName, int userId,int userScore) {
ContentValues args = new ContentValues();
args.put(COLUMN_USERCOUNT, usrCount);
args.put(COLUMN_USERNAME, usrName);
args.put(COLUMN_USRID, userId);
args.put(COLUMN_USERSCORE, userScore);
return database.update(QUIZ_USER_DETAILS_TABLE, args, COLUMN_USRID + "=" + rowId, null) > 0;
}
// retrieves a particular user
public Cursor get_QUIZ_USER_DETAILS(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_USER_DETAILS_TABLE, new String[] {
COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE },
// COLUMN_USERCOUNT, COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE },
COLUMN_USRID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular user
public boolean delete_SELECTED_QUIZ_USER_DETAILS(long rowId) {
return database.delete(QUIZ_USER_DETAILS_TABLE, COLUMN_USRID + "=" + rowId, null) > 0;
}
// retrieves all users
public Cursor getAll_QUIZ_USER_DETAILS() {
return database.query(QUIZ_USER_DETAILS_TABLE, new String[] {
COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE }, null, null,
// COLUMN_USERCOUNT,COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE }, null, null,
null, null, null);
}
//endregion
//region Quiz Title
// insert a quiz title
public long insert_QUIZ_TITLE(int quizTitleId, String quizTitle) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_QUIZTITLEID, quizTitleId);
initialValues.put(COLUMN_QUIZTITLE, quizTitle);
return database.insert(QUIZ_TITLE_TABLE, null, initialValues);
}
// updates a quiz title
public boolean update_QUIZ_TITLE(int rowId,int quizTitleId, String quizTitle) {
ContentValues args = new ContentValues();
args.put(COLUMN_QUIZTITLEID, quizTitleId);
args.put(COLUMN_QUIZTITLE, quizTitle);
return database.update(QUIZ_TITLE_TABLE, args, COLUMN_QUIZTITLEID + "=" + rowId, null) > 0;
}
// retrieves a quiz title
public Cursor get_QUIZ_TITLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_TITLE_TABLE, new String[] {
COLUMN_QUIZTITLE, },
COLUMN_QUIZTITLEID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz title
public boolean delete_SELECTED_QUIZ_TITLE(long rowId) {
return database.delete(QUIZ_TITLE_TABLE, COLUMN_QUIZTITLEID + "=" + rowId, null) > 0;
}
// retrieves all quiz titles
public Cursor getAll_QUIZ_TITLE() {
return database.query(QUIZ_TITLE_TABLE, new String[] { COLUMN_QUIZTITLE }, null, null,
null, null, null);
}
//endregion
//region Quiz Question
// insert a quiz Question
public long insert_QUIZ_QUESTION_TABLE(int quizQuestionId,int quizQuestionTitleId, String quizQuestion,int quizAnswered,int quizAnsweredCorct) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_QUESTION_ID, quizQuestionId);
initialValues.put(COLUMN_QUESTION_TITLE_ID, quizQuestionTitleId);
initialValues.put(COLUMN_QUESTION, quizQuestion);
initialValues.put(COLUMN_QUESTION_ANSWERED, quizAnswered);
initialValues.put(COLUMN_QUESTION_ANSWERED_CORRECT, quizAnsweredCorct);
return database.insert(QUIZ_QUESTION_TABLE, null, initialValues);
}
// updates a quiz Question
public boolean update_QUIZ_QUESTION_TABLE(long rowId,int quizQuestionId,int quizQuestionTitleId, String quizQuestion,int quizAnswered,int quizAnsweredCorct) {
ContentValues args = new ContentValues();
args.put(COLUMN_QUESTION_ID, quizQuestionId);
args.put(COLUMN_QUESTION_TITLE_ID, quizQuestionId);
args.put(COLUMN_QUESTION, quizQuestion);
args.put(COLUMN_QUESTION_ANSWERED, quizAnswered);
args.put(COLUMN_QUESTION_ANSWERED_CORRECT, quizAnsweredCorct);
return database.update(QUIZ_QUESTION_TABLE, args, COLUMN_QUESTION_ID + "=" + rowId, null) > 0;
}
// retrieves a quiz Question
public Cursor get_QUIZ_QUESTION_TABLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_QUESTION_TABLE, new String[] {
COLUMN_QUESTION_TITLE_ID,COLUMN_QUESTION,COLUMN_QUESTION_ANSWERED,COLUMN_QUESTION_ANSWERED_CORRECT },
COLUMN_QUESTION_ID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz Question
public boolean delete_SELECTED_QUIZ_QUESTION_TABLE(long rowId) {
return database.delete(QUIZ_QUESTION_TABLE, COLUMN_QUESTION_ID + "=" + rowId, null) > 0;
}
// retrieves all quiz Questions
public Cursor getAll_QUIZ_QUESTION_TABLE() {
return database.query(QUIZ_QUESTION_TABLE, new String[] { COLUMN_QUESTION }, null, null,
null, null, null);
}
//endregion
//region Quiz Options
// insert quiz Options
public long insert_QUIZ_OPTION_TABLE(int quizOptionId,int quizQuestionId, String quizOption_1, String quizOption_2, String quizOption_3, String quizOption_4,int quizCorrectOption) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_OPTION_ID, quizOptionId);
initialValues.put(COLUMN_OPTION_QUESTION_ID, quizQuestionId);
initialValues.put(COLUMN_OPTION_1, quizOption_1);
initialValues.put(COLUMN_OPTION_2, quizOption_2);
initialValues.put(COLUMN_OPTION_3, quizOption_3);
initialValues.put(COLUMN_OPTION_4, quizOption_4);
initialValues.put(COLUMN_CORRECT_OPTION, quizCorrectOption);
return database.insert(QUIZ_OPTION_TABLE, null, initialValues);
}
// updates a quiz Options
public boolean update_QUIZ_OPTION_TABLE(long rowId, int quizOptionId,int quizQuestionId, String quizOption_1, String quizOption_2, String quizOption_3, String quizOption_4,int quizCorrectOption) {
ContentValues args = new ContentValues();
args.put(COLUMN_OPTION_ID, quizOptionId);
args.put(COLUMN_OPTION_QUESTION_ID, quizQuestionId);
args.put(COLUMN_OPTION_1, quizOption_1);
args.put(COLUMN_OPTION_2, quizOption_2);
args.put(COLUMN_OPTION_3, quizOption_3);
args.put(COLUMN_OPTION_4, quizOption_4);
args.put(COLUMN_CORRECT_OPTION, quizCorrectOption);
return database.update(QUIZ_OPTION_TABLE, args, COLUMN_OPTION_ID + "=" + rowId, null) > 0;
}
// retrieves a quiz Options
public Cursor get_QUIZ_OPTION_TABLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_OPTION_TABLE, new String[] {
COLUMN_OPTION_1,COLUMN_OPTION_2,COLUMN_OPTION_3, COLUMN_OPTION_4,COLUMN_CORRECT_OPTION },
COLUMN_OPTION_ID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz Option
public boolean delete_SELECTED_QUIZ_OPTION_TABLE(long rowId) {
return database.delete(QUIZ_OPTION_TABLE, COLUMN_OPTION_ID + "=" + rowId, null) > 0;
}
// retrieves all quiz Option
public Cursor getAll_QUIZ_OPTION_TABLE() {
return database.query(QUIZ_OPTION_TABLE, new String[] { COLUMN_QUESTION }, null, null,
null, null, null);
}
//endregion
@Override
public void onCreate(SQLiteDatabase arg0) {
// TODO Auto-generated method stub
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
}
11-16 22:51:39.537 16947-16947/com.jalil.justquiz E/SQLiteLog﹕ (1) no such table: quiz_title
11-16 22:51:39.577 16947-16947/com.jalil.justquiz E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.jalil.justquiz, PID: 16947
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jalil.justquiz/com.jalil.justquiz.MainActivity}: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1161)
at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1032)
at com.jalil.justquiz.DatabaseOpenHelper.get_QUIZ_TITLE(DatabaseOpenHelper.java:230)
at com.jalil.justquiz.MainActivity.onCreate(MainActivity.java:37)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
package com.jalil.justquiz;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteException;
import android.database.sqlite.SQLiteOpenHelper;
/*
* Created by Jalil on 14-11-2015.
*/
public class DatabaseOpenHelper extends SQLiteOpenHelper{
public static String DATABASE_NAME = "";
private static final int DATABASE_VERSION = 3;
private static final String QUIZ_USER_DETAILS_TABLE = "quiz_user_details";
private static final String COLUMN_USERCOUNT = "User_Count";
private static final String COLUMN_USERNAME = "User_Name";
private static final String COLUMN_USRID = "User_Id";
private static final String COLUMN_USERSCORE = "User_Score";
private static final String QUIZ_TITLE_TABLE = "quiz_title";
private static final String COLUMN_QUIZTITLEID = "_id";
private static final String COLUMN_QUIZTITLE = "quiz_title";
private static final String QUIZ_QUESTION_TABLE = "quiz_question";
private static final String COLUMN_QUESTION_ID = "_id";
private static final String COLUMN_QUESTION_TITLE_ID = "quiz_title_id";
private static final String COLUMN_QUESTION = "quiz_question";
private static final String COLUMN_QUESTION_ANSWERED = "quiz_question_answered";
private static final String COLUMN_QUESTION_ANSWERED_CORRECT = "quiz_question_answered_correct";
private static final String QUIZ_OPTION_TABLE = "quiz_option";
private static final String COLUMN_OPTION_ID = "_id";
private static final String COLUMN_OPTION_QUESTION_ID = "quiz_question_id";
private static final String COLUMN_OPTION_1 = "quiz_option_1";
private static final String COLUMN_OPTION_2 = "quiz_option_2";
private static final String COLUMN_OPTION_3 = "quiz_option_3";
private static final String COLUMN_OPTION_4 = "quiz_option_4";
private static final String COLUMN_CORRECT_OPTION = "quiz_correct_option";
// private static final String QUIZ_USER_ANSWER_TABLE = "quiz_user_answer";
// private static final String QUIZ_USER_ANSWER__ID = "quiz_user_answer";
// private static final String QUIZ_USER_ANSWER__OPTION = "quiz_option_id";
private SQLiteDatabase database;
private final Context context;
// database path
private static String DATABASE_PATH;
/** constructor */
public DatabaseOpenHelper(Context ctx,String databaseName) {
super(ctx, databaseName, null, DATABASE_VERSION);
DATABASE_NAME = databaseName;
this.context = ctx;
//DATABASE_PATH = context.getDatabasePath(DATABASE_NAME).getPath() ;
DATABASE_PATH = context.getApplicationInfo().dataDir + "/databases/";
}
/**
* Creates a empty database on the system and rewrites it with your own
* database.
* */
public void create() throws IOException {
boolean dbExist = checkDataBase();
if (dbExist) {
} else {
SQLiteDatabase db = this.getReadableDatabase();
if (db.isOpen()){
db.close();
}
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 = DATABASE_PATH + DATABASE_NAME;
checkDB = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);
} 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 = context.getAssets().open(DATABASE_NAME);
// Path to the just created empty db
String outFileName = DATABASE_PATH + DATABASE_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();
}
/** open the database */
public void open() throws SQLException {
String myPath = DATABASE_PATH + DATABASE_NAME;
database = SQLiteDatabase.openDatabase(myPath, null,SQLiteDatabase.OPEN_READWRITE);
}
/** close the database */
@Override
public synchronized void close() {
if (database != null)
database.close();
super.close();
}
//region User Detail Table
// insert a user into the database
public long insert_QUIZ_USER_DETAILS(int usrCount, String usrName, int userId,int userScore) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_USERCOUNT, usrCount);
initialValues.put(COLUMN_USERNAME, usrName);
initialValues.put(COLUMN_USRID, userId);
initialValues.put(COLUMN_USERSCORE, userScore);
return database.insert(QUIZ_USER_DETAILS_TABLE, null, initialValues);
}
// updates a user
public boolean update_QUIZ_USER_DETAILS(int rowId,int usrCount, String usrName, int userId,int userScore) {
ContentValues args = new ContentValues();
args.put(COLUMN_USERCOUNT, usrCount);
args.put(COLUMN_USERNAME, usrName);
args.put(COLUMN_USRID, userId);
args.put(COLUMN_USERSCORE, userScore);
return database.update(QUIZ_USER_DETAILS_TABLE, args, COLUMN_USRID + "=" + rowId, null) > 0;
}
// retrieves a particular user
public Cursor get_QUIZ_USER_DETAILS(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_USER_DETAILS_TABLE, new String[] {
COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE },
// COLUMN_USERCOUNT, COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE },
COLUMN_USRID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular user
public boolean delete_SELECTED_QUIZ_USER_DETAILS(long rowId) {
return database.delete(QUIZ_USER_DETAILS_TABLE, COLUMN_USRID + "=" + rowId, null) > 0;
}
// retrieves all users
public Cursor getAll_QUIZ_USER_DETAILS() {
return database.query(QUIZ_USER_DETAILS_TABLE, new String[] {
COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE }, null, null,
// COLUMN_USERCOUNT,COLUMN_USERNAME, COLUMN_USRID, COLUMN_USERSCORE }, null, null,
null, null, null);
}
//endregion
//region Quiz Title
// insert a quiz title
public long insert_QUIZ_TITLE(int quizTitleId, String quizTitle) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_QUIZTITLEID, quizTitleId);
initialValues.put(COLUMN_QUIZTITLE, quizTitle);
return database.insert(QUIZ_TITLE_TABLE, null, initialValues);
}
// updates a quiz title
public boolean update_QUIZ_TITLE(int rowId,int quizTitleId, String quizTitle) {
ContentValues args = new ContentValues();
args.put(COLUMN_QUIZTITLEID, quizTitleId);
args.put(COLUMN_QUIZTITLE, quizTitle);
return database.update(QUIZ_TITLE_TABLE, args, COLUMN_QUIZTITLEID + "=" + rowId, null) > 0;
}
// retrieves a quiz title
public Cursor get_QUIZ_TITLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_TITLE_TABLE, new String[] {
COLUMN_QUIZTITLE, },
COLUMN_QUIZTITLEID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz title
public boolean delete_SELECTED_QUIZ_TITLE(long rowId) {
return database.delete(QUIZ_TITLE_TABLE, COLUMN_QUIZTITLEID + "=" + rowId, null) > 0;
}
// retrieves all quiz titles
public Cursor getAll_QUIZ_TITLE() {
return database.query(QUIZ_TITLE_TABLE, new String[] { COLUMN_QUIZTITLE }, null, null,
null, null, null);
}
//endregion
//region Quiz Question
// insert a quiz Question
public long insert_QUIZ_QUESTION_TABLE(int quizQuestionId,int quizQuestionTitleId, String quizQuestion,int quizAnswered,int quizAnsweredCorct) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_QUESTION_ID, quizQuestionId);
initialValues.put(COLUMN_QUESTION_TITLE_ID, quizQuestionTitleId);
initialValues.put(COLUMN_QUESTION, quizQuestion);
initialValues.put(COLUMN_QUESTION_ANSWERED, quizAnswered);
initialValues.put(COLUMN_QUESTION_ANSWERED_CORRECT, quizAnsweredCorct);
return database.insert(QUIZ_QUESTION_TABLE, null, initialValues);
}
// updates a quiz Question
public boolean update_QUIZ_QUESTION_TABLE(long rowId,int quizQuestionId,int quizQuestionTitleId, String quizQuestion,int quizAnswered,int quizAnsweredCorct) {
ContentValues args = new ContentValues();
args.put(COLUMN_QUESTION_ID, quizQuestionId);
args.put(COLUMN_QUESTION_TITLE_ID, quizQuestionId);
args.put(COLUMN_QUESTION, quizQuestion);
args.put(COLUMN_QUESTION_ANSWERED, quizAnswered);
args.put(COLUMN_QUESTION_ANSWERED_CORRECT, quizAnsweredCorct);
return database.update(QUIZ_QUESTION_TABLE, args, COLUMN_QUESTION_ID + "=" + rowId, null) > 0;
}
// retrieves a quiz Question
public Cursor get_QUIZ_QUESTION_TABLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_QUESTION_TABLE, new String[] {
COLUMN_QUESTION_TITLE_ID,COLUMN_QUESTION,COLUMN_QUESTION_ANSWERED,COLUMN_QUESTION_ANSWERED_CORRECT },
COLUMN_QUESTION_ID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz Question
public boolean delete_SELECTED_QUIZ_QUESTION_TABLE(long rowId) {
return database.delete(QUIZ_QUESTION_TABLE, COLUMN_QUESTION_ID + "=" + rowId, null) > 0;
}
// retrieves all quiz Questions
public Cursor getAll_QUIZ_QUESTION_TABLE() {
return database.query(QUIZ_QUESTION_TABLE, new String[] { COLUMN_QUESTION }, null, null,
null, null, null);
}
//endregion
//region Quiz Options
// insert quiz Options
public long insert_QUIZ_OPTION_TABLE(int quizOptionId,int quizQuestionId, String quizOption_1, String quizOption_2, String quizOption_3, String quizOption_4,int quizCorrectOption) {
ContentValues initialValues = new ContentValues();
initialValues.put(COLUMN_OPTION_ID, quizOptionId);
initialValues.put(COLUMN_OPTION_QUESTION_ID, quizQuestionId);
initialValues.put(COLUMN_OPTION_1, quizOption_1);
initialValues.put(COLUMN_OPTION_2, quizOption_2);
initialValues.put(COLUMN_OPTION_3, quizOption_3);
initialValues.put(COLUMN_OPTION_4, quizOption_4);
initialValues.put(COLUMN_CORRECT_OPTION, quizCorrectOption);
return database.insert(QUIZ_OPTION_TABLE, null, initialValues);
}
// updates a quiz Options
public boolean update_QUIZ_OPTION_TABLE(long rowId, int quizOptionId,int quizQuestionId, String quizOption_1, String quizOption_2, String quizOption_3, String quizOption_4,int quizCorrectOption) {
ContentValues args = new ContentValues();
args.put(COLUMN_OPTION_ID, quizOptionId);
args.put(COLUMN_OPTION_QUESTION_ID, quizQuestionId);
args.put(COLUMN_OPTION_1, quizOption_1);
args.put(COLUMN_OPTION_2, quizOption_2);
args.put(COLUMN_OPTION_3, quizOption_3);
args.put(COLUMN_OPTION_4, quizOption_4);
args.put(COLUMN_CORRECT_OPTION, quizCorrectOption);
return database.update(QUIZ_OPTION_TABLE, args, COLUMN_OPTION_ID + "=" + rowId, null) > 0;
}
// retrieves a quiz Options
public Cursor get_QUIZ_OPTION_TABLE(long rowId) throws SQLException {
Cursor mCursor = database.query(true, QUIZ_OPTION_TABLE, new String[] {
COLUMN_OPTION_1,COLUMN_OPTION_2,COLUMN_OPTION_3, COLUMN_OPTION_4,COLUMN_CORRECT_OPTION },
COLUMN_OPTION_ID + " = " + rowId, null, null, null, null, null);
if (mCursor != null) {
mCursor.moveToFirst();
}
return mCursor;
}
// delete a particular quiz Option
public boolean delete_SELECTED_QUIZ_OPTION_TABLE(long rowId) {
return database.delete(QUIZ_OPTION_TABLE, COLUMN_OPTION_ID + "=" + rowId, null) > 0;
}
// retrieves all quiz Option
public Cursor getAll_QUIZ_OPTION_TABLE() {
return database.query(QUIZ_OPTION_TABLE, new String[] { COLUMN_QUESTION }, null, null,
null, null, null);
}
//endregion
@Override
public void onCreate(SQLiteDatabase arg0) {
// TODO Auto-generated method stub
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
}
11-16 22:51:39.537 16947-16947/com.jalil.justquiz E/SQLiteLog﹕ (1) no such table: quiz_title
11-16 22:51:39.577 16947-16947/com.jalil.justquiz E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.jalil.justquiz, PID: 16947
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.jalil.justquiz/com.jalil.justquiz.MainActivity}: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.database.sqlite.SQLiteException: no such table: quiz_title (code 1): , while compiling: SELECT DISTINCT quiz_title FROM quiz_title WHERE _id = 1
at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method)
at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:889)
at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:500)
at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588)
at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58)
at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37)
at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44)
at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314)
at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1161)
at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1032)
at com.jalil.justquiz.DatabaseOpenHelper.get_QUIZ_TITLE(DatabaseOpenHelper.java:230)
at com.jalil.justquiz.MainActivity.onCreate(MainActivity.java:37)
at android.app.Activity.performCreate(Activity.java:5231)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
at android.app.ActivityThread.access$800(ActivityThread.java:135)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
at dalvik.system.NativeStart.main(Native Method)
11-16 22:51:39.537 16947-16947/com.jalil.justquick E/SQLiteLog﹕ （1） 没有这样的表格：测验题
11-16 22:51:39.577 16947-16947/com.jalil.justquick E/AndroidRuntime﹕ 致命异常：主
进程：com.jalil.justquick，PID:16947
java.lang.RuntimeException:无法启动活动组件信息{com.jalil.justquick/com.jalil.justquick.MainActivity}:android.database.sqlite.SQLiteException:没有这样的表：测验标题（代码1）：，编译时：从测验标题中选择不同的测验标题，其中_id=1
在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2195）上
位于android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2245）
在android.app.ActivityThread.access$800（ActivityThread.java:135）
在android.app.ActivityThread$H.handleMessage（ActivityThread.java:1196）上
位于android.os.Handler.dispatchMessage（Handler.java:102）
位于android.os.Looper.loop（Looper.java:136）
位于android.app.ActivityThread.main（ActivityThread.java:5017）
位于java.lang.reflect.Method.Invokenactive（本机方法）
位于java.lang.reflect.Method.invoke（Method.java:515）
在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:779）上
位于com.android.internal.os.ZygoteInit.main（ZygoteInit.java:595）
在dalvik.system.NativeStart.main（本机方法）
原因：android.database.sqlite.SQLiteException:没有这样的表：quick\u title（代码1）：，编译时：从quick\u title中选择不同的quick\u title，其中_id=1
位于android.database.sqlite.SQLiteConnection.nativePrepareStatement（本机方法）
位于android.database.sqlite.SQLiteConnection.acquirePreparedStatement（SQLiteConnection.java:889）
位于android.database.sqlite.SQLiteConnection.prepare（SQLiteConnection.java:500）
位于android.database.sqlite.SQLiteSession.prepare（SQLiteSession.java:588）
位于android.database.sqlite.SQLiteProgram.（SQLiteProgram.java:58）
位于android.database.sqlite.SQLiteQuery（SQLiteQuery.java:37）
位于android.database.sqlite.SQLiteDirectCursorDriver.query（SQLiteDirectCursorDriver.java:44）
位于android.database.sqlite.SQLiteDatabase.rawQueryWithFactory（SQLiteDatabase.java:1314）
位于android.database.sqlite.SQLiteDatabase.queryWithFactory（SQLiteDatabase.java:1161）
位于android.database.sqlite.SQLiteDatabase.query（SQLiteDatabase.java:1032）
位于com.jalil.justquick.DatabaseOpenHelper.get_quick_TITLE（DatabaseOpenHelper.java:230）
位于com.jalil.justquick.MainActivity.onCreate（MainActivity.java:37）
位于android.app.Activity.performCreate（Activity.java:5231）
位于android.app.Instrumentation.callActivityOnCreate（Instrumentation.java:1087）
在android.app.ActivityThread.performLaunchActivity（ActivityThread.java:2159）上
位于android.app.ActivityThread.handleLaunchActivity（ActivityThread.java:2245）
在android.app.ActivityThread.access$800（ActivityThread.java:135）
在android.app.ActivityThread$H.handleMessage（ActivityThread.java:1196）上
位于android.os.Handler.dispatchMessage（Handler.java:102）
位于android.os.Looper.loop（Looper.java:136）
位于android.app.ActivityThread.main（ActivityThread.java:5017）
位于java.lang.reflect.Method.Invokenactive（本机方法）
位于java.lang.reflect.Method.invoke（Method.java:515）
在com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run（ZygoteInit.java:779）上
位于com.android.internal.os.ZygoteInit.main（ZygoteInit.java:595）
在dalvik.system.NativeStart.main（本机方法）
更新：从DDMS打开数据库时，数据库中似乎只有android_元数据选项卡。因此它没有显示这样的表，但为什么要将“资产”文件夹中数据库中的表复制到“/databases”文件夹中的数据库中呢。仔细检查以确保您创建了它，因为您的语法是正确的，查看它在使用时是否引发I/O异常；您的数据库缺少非常重要的表“android_metadata”Hi@Jasz我正在使用SQLite DB browser预创建选项卡，因此我的代码检查数据库是否存在，如果不创建空数据库，则从资产文件夹中的数据库复制选项卡。还尝试了getWriteableDatabase（），但仍然存在相同的错误--PankajNimgade--我确实有android_元数据，这是我的附加表列表中的第一个表，看起来你没有创建表。仔细检查以确保您创建了它，因为您的语法是正确的，查看它在使用时是否引发I/O异常；您的数据库缺少非常重要的表“android_metadata”Hi@Jasz我正在使用SQLite DB browser预创建选项卡，因此我的代码检查数据库是否存在，如果不创建空数据库，则从资产文件夹中的数据库复制选项卡。还尝试了getWriteableDatabase（），但仍然存在相同的错误--PankajNimgade——我确实有android_元数据，这是我附件列表中的第一个表