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我從版本1向我的數據庫添加了3個新列，因此我將其更改爲版本2，但現在當我使用使用我的數據庫的活動時，我的應用崩潰並在logcat中顯示此列。升級後SQLitedatabase崩潰
04-02 18：41：09.013：E/AndroidRuntime（19171）：致命異常：主 04-02 18：41：09.013：E/AndroidRuntime（19171）： 了java.lang.RuntimeException：無法啓動活動 ComponentInfo {com.fullfrontalgames.numberfighter/com.fullfrontalgames.numberfighter.AccountSettings}： android.database.sqlite.SQLiteException：接近「CREATE」：語法錯誤 （代碼1）：，編譯時：create table NFDB（ID整數主鍵 自動增量，USERNAME文本CREATE UNIQUE INDEX idx_keytype ON tableName（USERNAME）; USERNAME text，PASSWORD text，EMAIL text，NUMBERINPUT text，SCORE text，FRIENDS文本）;
04-02 18：41：09.013：E/AndroidRuntime（19171）： android.database.sqlite.SQLiteException：致近 「創建」：語法錯誤 （碼1）：在編譯：創建表NFDB（ID整數主鍵 自動增量，USERNAME文本CREATE UNIQUE INDEX idx_keytype ON tableName（USERNAME）; USERNAME text，PASSWORD text，EMAIL text，NUMBERINPUT text，SCORE text，FRIENDS text）;
我看不到任何地方的語法錯誤，我有我的DBHelper幫助類放棄我的舊錶，並使新表。
這裏是我的我將對DBAdapter和DBHelper類
package com.fullfrontalgames.numberfighter;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
public class DBAdapter
{
static final String DATABASE_NAME = "NFDB.db";
static final int DATABASE_VERSION = 2;
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_CREATE = "create table "+"NFDB"+
"(" +"ID"+" integer primary key autoincrement,"+ "USERNAME text CREATE UNIQUE INDEX idx_keytype ON tableName (USERNAME);" +
"PASSWORD text,EMAIL text,NUMBERINPUT text,SCORE text,FRIENDS text); ";
// Variable to hold the database instance
public SQLiteDatabase db;
// Context of the application using the database.
private final Context context;
// Database open/upgrade helper
private DataBaseHelper DBHelper;
public DBAdapter(Context _context)
{
context = _context;
DBHelper = new DataBaseHelper(context, DATABASE_NAME, null, DATABASE_VERSION);
}
public DBAdapter open() throws SQLException
{
db = DBHelper.getWritableDatabase();
return this;
}
public void close()
{
db.close();
}
public SQLiteDatabase getDatabaseInstance()
{
return db;
}
public void insertEntry(String userName,String password,String email)
{
ContentValues newValues = new ContentValues();
// Assign values for each row.
newValues.put("USERNAME", userName);
newValues.put("PASSWORD",password);
newValues.put("EMAIL", email);
// Insert the row into your table
db.insert("NFDB", null, newValues);
///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= db.delete("NFDB", where, new String[]{userName}) ;
// Toast.makeText(context, "Number fo Entry Deleted Successfully : "+numberOFEntriesDeleted, Toast.LENGTH_LONG).show();
return numberOFEntriesDeleted;
}
public String getSinlgeEntry(String userName)
{
Cursor cursor=db.query("NFDB", null, " USERNAME=?", new String[]{userName}, null, null, null);
if(cursor.getCount()<1) // UserName Not Exist
{
cursor.close();
return "NOT EXIST";
}
cursor.moveToFirst();
String password= cursor.getString(cursor.getColumnIndex("PASSWORD"));
cursor.close();
return password;
}
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 = ?";
db.update("NFDB",updatedValues, where, new String[]{userName});
}
public String getData() {
String[] columns = new String[] { "ID", "USERNAME"};
Cursor c = db.query("NFDB", columns, null, null, null, null, null, null);
String result ="";
int iRow = c.getColumnIndex("ID");
int iName = c.getColumnIndex("USERNAME");
for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) {
result = result + c.getString(iRow) + " " + c.getString(iName) + "/n";
}
return result;
}
public String getUsername(String searchName) {
Cursor c = db.query("NFDB",
new String[] { "USERNAME" },
"USERNAME = ?",
new String[] { searchName },
null, null, null);
if (c.moveToNext())
return c.getString(0);
else
return "";
}
public void InsertScore(String Username,String Score)
{
ContentValues ScoreValues = new ContentValues();
ScoreValues.put("USERNAME", Username);
ScoreValues.put("SCORE", Score);
db.insert("NFDB", null, ScoreValues);
}
public String GetGameScore(String Username,String Score)
{
Cursor cursor = db.query("NFDB", null, "USERNAME",new String[]{Username,Score}, null, null, null);
cursor.moveToFirst();
cursor.close();
return Username;
}
public String GetAllScore()
{
String[] columns = new String[] {"ID","USERNAME","SCORE"};
Cursor cursor = db.query("NFDB", columns, null, null, null, null, null);
String result="";
int iRow = cursor.getColumnIndex("ID");
int iUsername = cursor.getColumnIndex("USERNAME");
int iScore = cursor.getColumnIndex("SCORE");
for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
result = result + cursor.getString(iRow) + " " + cursor.getString(iUsername) + " " + cursor.getString(iScore) + "/n";
}
return result;
}
public void InsertNumber(String Username,String Number)
{
ContentValues NumberValues = new ContentValues();
NumberValues.put("USERNAME", Username);
NumberValues.put("NUMBERINPUT", Number);
db.insert("NFDB", null, NumberValues);
}
public String GetNumber(String Username,String Number)
{
Cursor cursor = db.query("NFDB", null, "USERNAME", new String[]{Username,Number}, null, null, null, null);
cursor.moveToFirst();
cursor.close();
return Username;
}
public String GetAllNumbers()
{
String[] columns = new String[] {"ID","USERNAME","NUMBERINPUT"};
Cursor cursor = db.query("NFDB", columns, null, null, null, null, null, null);
String result="";
int iRow = cursor.getColumnIndex("ID");
int iName = cursor.getColumnIndex("USERNAME");
int iNumber = cursor.getColumnIndex("NUMBERINPUT");
for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
result = result + cursor.getString(iRow) + " " + cursor.getString(iName) + " " + cursor.getString(iNumber) + "/n";
}
return result;
}
public void InsertFriends (String Username,String Friends)
{
ContentValues FriendValues = new ContentValues();
FriendValues.put("USERNAME", Username);
FriendValues.put("FRIENDS", Friends);
db.insert("NFDB", null, FriendValues);
}
public int DeleteFriends(String Username,String Friends)
{
String where = "USERNAME=?,FRIENDS=?";
int numberOfEntriesDeleted = db.delete("NFDB", where, new String[]{Username,Friends});
return numberOfEntriesDeleted;
}
public String GetFriend(String Username,String Friend)
{
Cursor cursor = db.query("NFDB", null, "USERNAME", new String[]{Username,Friend}, null, null, null, null);
cursor.moveToFirst();
cursor.close();
return Username;
}
public String GetAllFriends()
{
String[] columns = new String[] {"ID","USERNAME","FRIENDS"};
Cursor cursor = db.query("NFDB", columns, null, null, null, null, null, null);
String result="";
int iRow = cursor.getColumnIndex("ID");
int iName = cursor.getColumnIndex("USERNAME");
int iFriends = cursor.getColumnIndex("FRIENDS");
for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
result = result + cursor.getString(iRow) + " " + cursor.getString(iName) + " " + cursor.getString(iFriends) + "/n";
}
return result;
}
}
包com.fullfrontalgames.numberfighter的代碼;
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 DataBaseHelper extends SQLiteOpenHelper { public DataBaseHelper(Context context, String name,CursorFactory factory, int version) { super(context, name, factory, version); } // TODO Auto-generated constructor stub // 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(DBAdapter.DATABASE_CREATE); } // 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 " + "NFDB"); // Create a new one. onCreate(_db); } }
'ON tableName（USERNAME）;「'你認爲''''必須是'，'。 – Smit