您好我在数据库中创建了一个表。 当我运行它时，我看到没有名为endTime的列的疯狂异常。 问题是，我看到我在onCreate方法上创建了该列。
代码：
package com.example.pref;
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 Databasehandler extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "ScheduleManager";
// Contacts table name
private static final String TABLE_SCHEDULE = "schedule";
// Contacts Table Columns names
private static final String KEY_ID = "id";
private static final String KEY_START_TIME = "StartTime";
private static final String KEY_END_TIME = "EndTime";
private static final String KEY_MONDAY = "Monday";
private static final String KEY_TUESDAY = "Tuesday";
private static final String KEY_WEDNESDAY = "Wednesday";
private static final String KEY_THURSDAY = "Thursday";
private static final String KEY_SATURDAY = "Saturday";
private static final String KEY_FRIDAY = "Friday";
private static final String KEY_SUNDAY = "Sunday";
public Databasehandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// + KEY_ID + " INTEGER PRIMARY KEY AUTOINCREMENT,"
// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_SCHEDULE_TABLE = "CREATE TABLE " + TABLE_SCHEDULE + "("
+ KEY_ID + " INTEGER PRIMARY KEY," + KEY_START_TIME
+ " BIGINT," + KEY_END_TIME + " BIGINT," + KEY_MONDAY
+ " INTEGER," + KEY_TUESDAY + " INTEGER," + KEY_WEDNESDAY
+ " INTEGER," + KEY_THURSDAY + " INTEGER," + KEY_FRIDAY
+ " INTEGER," + KEY_SATURDAY + " INTEGER," + KEY_SUNDAY
+ " INTEGER" + ")";
db.execSQL(CREATE_SCHEDULE_TABLE);
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_SCHEDULE);
// Create tables again
onCreate(db);
}
// Adding new Preference
public void addPreference(Preference pref) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_ID, pref.getID());
values.put(KEY_START_TIME, pref.getStartTime());
values.put(KEY_END_TIME, pref.getEndTime());
values.put(KEY_MONDAY, pref.getMonday());
values.put(KEY_TUESDAY, pref.getTuesday());
values.put(KEY_WEDNESDAY, pref.getWednesday());
values.put(KEY_THURSDAY, pref.getThursday());
values.put(KEY_FRIDAY, pref.getFriday());
values.put(KEY_SATURDAY, pref.getSaturday());
values.put(KEY_SUNDAY, pref.getSunday());
// Inserting Row
db.insert(TABLE_SCHEDULE, null, values);
db.close(); // Closing database connection
}
// Getting single message
public Preference getPreference(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_SCHEDULE, new String[] { KEY_ID,
KEY_START_TIME, KEY_END_TIME, KEY_MONDAY, KEY_TUESDAY,
KEY_WEDNESDAY, KEY_THURSDAY, KEY_FRIDAY, KEY_SATURDAY,
KEY_SUNDAY }, KEY_ID + "=?contact",
new String[] { String.valueOf(id) }, null, null, null, null);
if (cursor != null)
cursor.moveToFirst();
Preference pref = new Preference(cursor.getInt(0), cursor.getInt(1),
cursor.getInt(2), cursor.getInt(3), cursor.getInt(4),
cursor.getInt(5), cursor.getInt(6), cursor.getInt(7),
cursor.getInt(8), cursor.getInt(9));
// return contact
return pref;
}
// Getting All messages
public List<Preference> getAllPreferences() {
List<Preference> preferenceList = new ArrayList<Preference>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_SCHEDULE;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Preference pref = new Preference();
pref.setID(Integer.parseInt(cursor.getString(0)));
pref.setStartTime(Integer.parseInt(cursor.getString(1)));
pref.setEndTime(Integer.parseInt(cursor.getString(2)));
pref.setMonday(Integer.parseInt(cursor.getString(3)));
pref.setTuesday(Integer.parseInt(cursor.getString(4)));
pref.setWednesday(Integer.parseInt(cursor.getString(5)));
pref.setThursday(Integer.parseInt(cursor.getString(6)));
pref.setFriday(Integer.parseInt(cursor.getString(7)));
pref.setSaturday(Integer.parseInt(cursor.getString(8)));
pref.setSunday(Integer.parseInt(cursor.getString(9)));
// Adding contact to list
preferenceList.add(pref);
} while (cursor.moveToNext());
}
// return contact list
return preferenceList;
}
// Getting All messages
public List<Preference> getPreferences(int index, int limit) {
List<Preference> preferenceList = new ArrayList<Preference>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_SCHEDULE + " LIMIT "
+ index + ", " + limit;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
Preference pref = new Preference();
pref.setID(Integer.parseInt(cursor.getString(0)));
pref.setStartTime(Integer.parseInt(cursor.getString(1)));
pref.setEndTime(Integer.parseInt(cursor.getString(2)));
pref.setMonday(Integer.parseInt(cursor.getString(3)));
pref.setTuesday(Integer.parseInt(cursor.getString(4)));
pref.setWednesday(Integer.parseInt(cursor.getString(5)));
pref.setThursday(Integer.parseInt(cursor.getString(6)));
pref.setFriday(Integer.parseInt(cursor.getString(7)));
pref.setSaturday(Integer.parseInt(cursor.getString(8)));
pref.setSunday(Integer.parseInt(cursor.getString(9)));
// Adding contact to list
preferenceList.add(pref);
} while (cursor.moveToNext());
}
// return contact list
return preferenceList;
}
// Getting message Count
public int getPreferenceCount() {
// String countQuery = "SELECT * FROM " + TABLE_SCHEDULE;
String countQuery = "SELECT count(id) FROM " + TABLE_SCHEDULE;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
cursor.close();
// return count
return cursor.getCount();
}
// Updating single message
public int updatePreference(Preference pref) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_ID, pref.getID());
values.put(KEY_START_TIME, pref.getStartTime());
values.put(KEY_END_TIME, pref.getEndTime());
values.put(KEY_MONDAY, pref.getMonday());
values.put(KEY_TUESDAY, pref.getTuesday());
values.put(KEY_WEDNESDAY, pref.getWednesday());
values.put(KEY_THURSDAY, pref.getThursday());
values.put(KEY_FRIDAY, pref.getFriday());
values.put(KEY_SATURDAY, pref.getSaturday());
values.put(KEY_SUNDAY, pref.getSunday());
// updating row
return db.update(TABLE_SCHEDULE, values, KEY_ID + " = ?",
new String[] { String.valueOf(pref.getID()) });
}
// Deleting single message
public void deleteMessage(Preference pref) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_SCHEDULE, KEY_ID + " = ?",
new String[] { String.valueOf(pref.getID()) });
// db.close();
}
public int deleteAllMessages() {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete(TABLE_SCHEDULE, null, null);
}
}
logcat
08-10 11:24:29.976: E/Database(2997): Error inserting id=1 Saturday=0 Thursday=0 Monday=0 Tuesday=0 Wednesday=0 EndTime=0 StartTime=0 Friday=0 Sunday=0
08-10 11:24:29.976: E/Database(2997): android.database.sqlite.SQLiteException: table schedule has no column named EndTime: , while compiling: INSERT INTO schedule(id, Saturday, Thursday, Monday, Tuesday, Wednesday, EndTime, StartTime, Friday, Sunday) VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?);
谢谢。 / mkounal