这是我的数据库助手类，出现错误，这是您的控制台
“原因：SQL（查询）错误或数据库丢失。（无此表：配置文件（代码1）：，编译时：从配置文件中选择*，其中id_profile = 6）”
引起原因：SQL（query）错误或数据库丢失。 （无此表：配置文件（代码1）：，而在编译时：从id_profile = 6的配置文件中选择*）
引起原因：SQL（query）错误或数据库丢失。 （无此表：配置文件（代码1）：，而在编译时：从id_profile = 6的配置文件中选择*）
引起原因：SQL（query）错误或数据库丢失。 （无此表：配置文件（代码1）：，而在编译时：从id_profile = 6的配置文件中选择*）
引起原因：SQL（query）错误或数据库丢失。 （无此表：配置文件（代码1）：，而在编译时：从id_profile = 6的配置文件中选择*）
引起原因：SQL（query）错误或数据库丢失。 （没有这样的表：概要文件（代码1）：，而在编译时：从id_profile = 6的概要文件中选择*）原因：SQL（query）错误或缺少数据库。 （没有这样的表：概要文件（代码1）：，而在编译时：从id_profile = 6的概要文件中选择*）原因：SQL（query）错误或缺少数据库。 （无此表：配置文件（代码1）：，而在编译时：从id_profile = 6的配置文件中选择*）
引起原因：SQL（query）错误或数据库丢失。 （没有这样的表：概要文件（代码1）：，而在编译时：从id_profile = 6的概要文件中选择*）原因：SQL（query）错误或缺少数据库。 （没有这样的表：profile（代码1）：，而在编译时：从id_profile = 6的配置文件中选择*）
任何人请访问帮助
public class DatabaseHelper extends SQLiteOpenHelper {
private static String DB_NAME = "ocinator.db";
private static String DB_PATH = "";
private static final int DB_VERSION = 8;
private SQLiteDatabase mDataBase;
private final Context mContext;
private boolean mNeedUpdate = false;
static final String PROFILE_TABLE = "CREATE TABLE profile (" +
" id_profile INTEGER PRIMARY KEY AUTOINCREMENT," +
" first_name VARCHAR (15)," +
" last_name VARCHAR (15)," +
" email VARCHAR (50)," +
" phone VARCHAR (30)," +
" login_status VARCHAR (20)," +
" username VARCHAR (30)," +
" password TEXT," +
" ocinator_id DOUBLE," +
" name VARCHAR (39)," +
" nickname VARCHAR (30)," +
" registered_date DATETIME" +
");";
static final String NOTIFICATIONS_TABLE = "CREATE TABLE notification_oc (" +
" notification_id INTEGER PRIMARY KEY AUTOINCREMENT," +
" notification_title TEXT," +
" notification_message TEXT," +
" notification_firetime DATETIME," +
" notification_creationtime DATETIME DEFAULT (CURRENT_TIMESTAMP)," +
" notification_status TEXT" +
");" ;
/**
* Constructor
* Takes and keeps a reference of the passed context in order to access to the application assets and resources.
* @param context
*/
public DatabaseHelper(Context context) {
super(context, DB_NAME, null, DB_VERSION);
if (android.os.Build.VERSION.SDK_INT >= 17)
DB_PATH = context.getApplicationInfo().dataDir + "/databases/";
else
DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
this.mContext = context;
copyDataBase();
this.getReadableDatabase();
}
public void updateDataBase() throws IOException {
if (mNeedUpdate) {
File dbFile = new File(DB_PATH + DB_NAME);
if (dbFile.exists())
dbFile.delete();
copyDataBase();
mNeedUpdate = false;
}
}
private boolean checkDataBase() {
File dbFile = new File(DB_PATH + DB_NAME);
return dbFile.exists();
}
private void copyDataBase() {
if (!checkDataBase()) {
this.getReadableDatabase();
this.close();
try {
copyDBFile();
} catch (IOException mIOException) {
throw new Error("ErrorCopyingDataBase");
}
}
}
private void copyDBFile() throws IOException {
System.out.println("Input xx started");
InputStream mInput = mContext.getAssets().open(DB_NAME);
//InputStream mInput = mContext.getResources().openRawResource(R.raw.info);
OutputStream mOutput = new FileOutputStream(DB_PATH + DB_NAME);
byte[] mBuffer = new byte[1024];
int mLength;
while ((mLength = mInput.read(mBuffer)) > 0)
mOutput.write(mBuffer, 0, mLength);
mOutput.flush();
mOutput.close();
mInput.close();
}
public boolean openDataBase() throws SQLException {
mDataBase = SQLiteDatabase.openDatabase(DB_PATH + DB_NAME, null, SQLiteDatabase.CREATE_IF_NECESSARY);
return mDataBase != null;
}
@Override
public synchronized void close() {
if (mDataBase != null)
mDataBase.close();
super.close();
}
@Override
public void onCreate(SQLiteDatabase db) {
// db.execSQL(PROFILE_TABLE);
// db.execSQL(NOTIFICATIONS_TABLE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
if (newVersion > oldVersion)
mNeedUpdate = true;
// db.execSQL("DROP TABLE IF EXISTS profile");
// db.execSQL("DROP TABLE IF EXISTS notification_oc");
// onCreate(db);
}
public boolean insertNotification (String title, String msg, String time, String status) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("notification_title", title);
contentValues.put("notification_message", msg);
contentValues.put("notification_firetime", time);
contentValues.put("notification_status", status);
db.insert("notification_oc", null, contentValues);
return true;
}
public ArrayList<String> getAllNotifications() {
ArrayList<String> array_list = new ArrayList<String>();
//hp = new HashMap();
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery( "select * from notification_oc", null );
res.moveToFirst();
while(res.isAfterLast() == false){
array_list.add(res.getString(res.getColumnIndex("notification_title")));
res.moveToNext();
}
return array_list;
}
public Cursor getNotification(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor res = db.rawQuery( "select * from notification_oc where notification_id="+id+"", null );
return res;
}
public int numberOfRowsInNotifications(){
SQLiteDatabase db = this.getReadableDatabase();
int numRows = (int) DatabaseUtils.queryNumEntries(db, "notification_oc");
return numRows;
}
public Integer deleteNotification (Integer id) {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete("notification_oc",
"notification_id = ? ",
new String[] { Integer.toString(id) });
}
public boolean insertUser (String username, String password, String nickname, String email) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues contentValues = new ContentValues();
contentValues.put("username", username);
contentValues.put("password", password);
contentValues.put("nickname", nickname);
contentValues.put("email", email);
db.insert("profile", null, contentValues);
return true;
}
public Integer deleteUser (Integer id) {
SQLiteDatabase db = this.getWritableDatabase();
return db.delete("profile",
"id_profile = ? ",
new String[] { Integer.toString(id) });
}
public Cursor getUser(int id) {
SQLiteDatabase db = this.getReadableDatabase();
System.out.println("USERNAMEX1 : 111" );
Cursor res = db.rawQuery( "select * from profile where id_profile="+id+"", null );
System.out.println("USERNAMEX2 : 222" );
return res;
}
// Add your public helper methods to access and get content from the database.
// You could return cursors by doing "return myDataBase.query(....)" so it'd be easy
// to you to create adapters for your views.
}
答案 0 :(得分：0)
您正在使用它作为数据库目录：
if (android.os.Build.VERSION.SDK_INT >= 17)
DB_PATH = context.getApplicationInfo().dataDir + "/databases/";
else
DB_PATH = "/data/data/" + context.getPackageName() + "/databases/";
然后
DB_PATH + DB_NAME
您应该将其用作复制目的地。
context.getDatabasePath() + "/" + DB_NAME
似乎问题是您复制到了SQLiteOpenHelper的目录以外的地方。尽管复制后使用了mDatabase来打开文件，但这不是SQLiteOpenHelper所要使用的，而SQLiteOpenHelper会将其自身用于getReadableDatabase和getWritableDatabase，这不是复制的文件，并且没有所需的表。