SQLiteException : 해당 테이블 없음 : 로그인

Question

기본적으로 자산 폴더에있는 Sqlite 데이터베이스 브라우저를 사용하여 로그인을 시도합니다. 로그인 할 때마다 앱이 항상 닫히고 로그인과 같은 테이블에 대한 오류가 발생합니다.

내 데이터베이스 broswer에는 이러한 테이블이 있지만 ddms에는 android_metadata 만 표시되며 로그인과 같은 테이블은 존재하지 않습니다. 도와주세요.

가 여기 내 DatabaseHelper

public class DatabaseHelper extends SQLiteOpenHelper { 

private static String DB_NAME = "cafs"; 
private static int DB_Version = 2; 
private SQLiteDatabase db; 
private final Context context; 
private String DB_PATH = "/data/data/com.example.trialngiba/databases/"; 

public DatabaseHelper(Context context) { 
super(context, DB_NAME, null, DB_Version); 
this.context = context; 

} 

public void createDataBase() throws IOException { 


     boolean dbExist = checkDataBase(); 
     if (dbExist) { 
    try { 
     copyDataBase(); 
     } catch (IOException e) { 
     throw new Error("Error copying database"); 
     } 
     } else { 
    SQLiteDatabase db = this.getWritableDatabase(); 
    if (db.isOpen()){ 
     db.close(); 
     try { 
      copyDataBase(); 
      } catch (IOException e) { 
      throw new Error("Error copying database"); 
      } 
    } else { 
    try { 
     copyDataBase(); 
     } catch (IOException e) { 
     throw new Error("Error copying database"); 
     } 
    } 
     } 
     } 

private boolean checkDataBase() { 
File dbFile = new File(DB_PATH + DB_NAME); 
return dbFile.exists(); 
} 

private void copyDataBase() throws IOException { 

InputStream myInput = context.getAssets().open(DB_NAME); 
String outFileName = DB_PATH + DB_NAME; 
OutputStream myOutput = new FileOutputStream(outFileName); 
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(); 

} 
public DatabaseHelper open() throws SQLException 
{ 
    db = this.getWritableDatabase(); 
    return this; 
} 
public void close() 
{ 
    db.close(); 
} 

public SQLiteDatabase getDatabaseInstance() 
{ 
    return db; 
} 

public void insertEntry(String userName,String password) 
{ 
ContentValues newValues = new ContentValues(); 

    newValues.put("USERNAME", userName); 
    newValues.put("PASSWORD",password); 


    db.insert("login", null, newValues); 

} 
public int deleteEntry(String UserName) 
{ 

    String where="USERNAME=?"; 
    int numberOFEntriesDeleted= db.delete("login", where, new String[]{UserName}) ; 

return numberOFEntriesDeleted; 
} 
public String getSinlgeEntry(String userName) 
{ 
    Cursor cursor=db.query("login", null, " USERNAME=?", new String[]{userName}, null, null, null); 
if(cursor.getCount()<1) 
{ 
    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) 
{ 

    ContentValues updatedValues = new ContentValues(); 

    updatedValues.put("USERNAME", userName); 
    updatedValues.put("PASSWORD",password); 

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


@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 
Log.d ("onUpgrade first log", Integer.toString(db.getVersion())); 

if (oldVersion == 1) { 

    DB_Version = 2; 
    db.setVersion(2); 
    Log.d ("onUpgrade second log", Integer.toString(db.getVersion())); 

} 

else { 
    Log.d("onUpgrade", "else-clause: Already upgraded!"); 
} 
} 
} 

것은 여기 내 로그 캣

12-01 00:58:02.408: E/Trace(3081): error opening trace file: No such file or directory (2) 
12-01 00:58:09.822: E/SQLiteLog(3081): (1) no such table: login 
12-01 00:58:09.851: E/AndroidRuntime(3081): FATAL EXCEPTION: main 
12-01 00:58:09.851: E/AndroidRuntime(3081): android.database.sqlite.SQLiteException: no such table: login (code 1): , while compiling: SELECT * FROM login WHERE USERNAME=? 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteConnection.nativePrepareStatement(Native Method) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteConnection.acquirePreparedStatement(SQLiteConnection.java:882) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteConnection.prepare(SQLiteConnection.java:493) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteSession.prepare(SQLiteSession.java:588) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:58) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:37) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:44) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1314) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1161) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1032) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1200) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at com.example.trialngiba.DatabaseHelper.getSinlgeEntry(DatabaseHelper.java:131) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at com.example.trialngiba.MainActivity$2.onClick(MainActivity.java:67) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.view.View.performClick(View.java:4091) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.view.View$PerformClick.run(View.java:17072) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.os.Handler.handleCallback(Handler.java:615) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.os.Handler.dispatchMessage(Handler.java:92) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.os.Looper.loop(Looper.java:153) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at android.app.ActivityThread.main(ActivityThread.java:5042) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at java.lang.reflect.Method.invokeNative(Native Method) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at java.lang.reflect.Method.invoke(Method.java:511) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:821) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:584) 
12-01 00:58:09.851: E/AndroidRuntime(3081):  at dalvik.system.NativeStart.main(Native Method) 

Answer 1

입니다 당신이 myOutput을 닫는 깜빡, 반 작성된 파일 시스템에서 삭제한다고 가정하겠습니다.

는 문서

http://developer.android.com/reference/java/io/OutputStream.html을보고 코드에 가까운() 플러시 추가하려고()와.