Cerrar () nunca se llamó explícitamente en base de datos incluso después de implementar close ()

Eclipse me está mostrando el error anterior, aunque he implementado el dicho methos close ().

Aquí está el código:

• Causado por: android.database.sqlite.SQLiteException: no hay tal tabla: (código 1) Android
• Respecto a la Generación Dinámica de Matemáticas y Ciencias en Textview
• El conjunto de conexiones de la base de datos '/data/data/msv_database.db' no ha podido conceder una conexión. Conexiones: 0 activo, 1 inactivo, 0 disponible
• SQLiteDiskIOException con el código de error 10: error de E / S de disco
• La base de datos SQLite no aparece en el Explorador de archivos

public void update_project(View view) { EditText cinone = (EditText) findViewById(R.id.pname); pname = cinone.getText().toString(); String fDate = pday + ". " + pmonth + ". " + pyear; projectdatabase dbupdate = new projectdatabase(UpdateProject.this); dbupdate.open(); dbupdate.updateProject(id, pname, fDate); dbupdate.close(); } 

Logcat:

 12-31 22:05:51.114: E/SQLiteDatabase(4180): close() was never explicitly called on database '/data/data/com.kk.project/databases/project_db' 12-31 22:05:51.114: E/SQLiteDatabase(4180): android.database.sqlite.DatabaseObjectNotClosedException: Application did not close the cursor or database object that was opened here 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.database.sqlite.SQLiteDatabase.<init>(SQLiteDatabase.java:1943) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:1007) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:986) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.database.sqlite.SQLiteDatabase.openOrCreateDatabase(SQLiteDatabase.java:1051) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.ContextImpl.openOrCreateDatabase(ContextImpl.java:770) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.content.ContextWrapper.openOrCreateDatabase(ContextWrapper.java:221) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:157) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at com.kk.project.projectdatabase.open(projectdatabase.java:66) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at com.kk.project.ProjectExplorer.getinfo(ProjectExplorer.java:30) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at com.kk.project.ProjectExplorer.onCreate(ProjectExplorer.java:25) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.Activity.performCreate(Activity.java:4465) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.ActivityThread.access$600(ActivityThread.java:123) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.os.Handler.dispatchMessage(Handler.java:99) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.os.Looper.loop(Looper.java:137) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at android.app.ActivityThread.main(ActivityThread.java:4424) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at java.lang.reflect.Method.invokeNative(Native Method) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at java.lang.reflect.Method.invoke(Method.java:511) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 12-31 22:05:51.114: E/SQLiteDatabase(4180): at dalvik.system.NativeStart.main(Native Method) 12-31 22:05:51.165: E/System(4180): Uncaught exception thrown by finalizer 12-31 22:05:51.174: D/dalvikvm(4180): GREF has increased to 201 12-31 22:05:51.204: I/dalvikvm(4180): threadid=3: reacting to signal 3 12-31 22:05:51.324: E/System(4180): java.lang.IllegalStateException: Don't have database lock! 12-31 22:05:51.324: E/System(4180): at android.database.sqlite.SQLiteDatabase.verifyLockOwner(SQLiteDatabase.java:2090) 12-31 22:05:51.324: E/System(4180): at android.database.sqlite.SQLiteDatabase$1.entryRemoved(SQLiteDatabase.java:2182) 12-31 22:05:51.324: E/System(4180): at android.database.sqlite.SQLiteDatabase$1.entryRemoved(SQLiteDatabase.java:2178) 12-31 22:05:51.324: E/System(4180): at android.util.LruCache.trimToSize(LruCache.java:197) 12-31 22:05:51.324: E/System(4180): at android.util.LruCache.evictAll(LruCache.java:285) 12-31 22:05:51.324: E/System(4180): at android.database.sqlite.SQLiteDatabase.deallocCachedSqlStatements (SQLiteDatabase.java:2143) 12-31 22:05:51.324: E/System(4180): at android.database.sqlite.SQLiteDatabase.closeClosable(SQLiteDatabase.java:1126) 12-31 22:05:51.324: E/System(4180): at android.database.sqlite.SQLiteDatabase.finalize(SQLiteDatabase.java:1914) 12-31 22:05:51.324: E/System(4180): at java.lang.Daemons$FinalizerDaemon.doFinalize(Daemons.java:182) 12-31 22:05:51.324: E/System(4180): at java.lang.Daemons$FinalizerDaemon.run(Daemons.java:168) 12-31 22:05:51.324: E/System(4180): at java.lang.Thread.run(Thread.java:856) 

Lo extraño es que he usado código similar preciously y funcionó perfectamente. Además, otros métodos de la misma clase de base de datos funciona perfectamente.

Código de la actividad que llama a updateProject:

 public class UpdateProject extends Activity implements OnItemSelectedListener, DatePickerDialog.OnDateSetListener { int mPos; String mSelection; String pname; String pdifficulty; int pday; int pmonth; int pyear; String id; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_update_project); id = getIntent().getExtras().getString("idforupdate"); userdatabase viewname = new userdatabase(this); //Get username viewname.open(); String name = viewname.getusername(); viewname.close(); if(name.equals("")) { DialogFragment newFragment = new NouserexitFragment(); newFragment.show(getFragmentManager(), "exit"); } Spinner spinner = (Spinner) findViewById(R.id.difficultyspinner); ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource(this,R.array.difficultyarray, android.R.layout.simple_spinner_item); adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item); spinner.setAdapter(adapter); spinner.setOnItemSelectedListener(this); pdifficulty = spinner.getSelectedItem().toString(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.activity_update_project, menu); return true; } @TargetApi(Build.VERSION_CODES.HONEYCOMB) public void datepicker(View v) { //Date picker DialogFragment newFragment = new DatePickerForUpdate(); newFragment.show(getFragmentManager(), "datePickerforupdate"); } @Override public void onDateSet(DatePicker view, int year, int month, int day) { // TODO Auto-generated method stub pday = day; pmonth = month +1; pyear = year; month = month + 1; Button activityButton = (Button)findViewById(R.id.datebutton); activityButton.setText (day + "." + month + "." + year); } @Override public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) { // TODO Auto-generated method stub UpdateProject.this.mPos = pos; UpdateProject.this.mSelection = parent.getItemAtPosition(pos).toString(); } @Override public void onNothingSelected(AdapterView<?> arg0) { // TODO Auto-generated method stub } public void update_project(View view) { EditText cinone = (EditText) findViewById(R.id.pname); pname = cinone.getText().toString(); String fdate = pday + ". " + pmonth + ". " + pyear; projectdatabase update = new projectdatabase(UpdateProject.this); update.open(); update.updateProject(id, pname, fdate); update.close(); } 

}

Código para la clase de base de datos:

 public class projectdatabase { public static final String KEY_ROWID = "_id"; public static final String PROJECT_NAME = "project_name"; public static final String PROJECT_ID = "project_id"; public static final String PROJECT_DIFFICULTY = "project_difficulty"; public static final String PROJECT_STATUS = "project_status"; public static final String PROJECT_START_DATE = "project_start_date"; public static final String PROJECT_FINISH_DATE = "project_finsish_date"; private static final String DATABASE_NAME = "project_db"; static final String DATABASE_TABLE = "project_details"; private static final int DATABASE_VERSION = 1; private DbHelper ourHelper; private final Context projectdbContext; private SQLiteDatabase projectDatabase; private static class DbHelper extends SQLiteOpenHelper { public DbHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub db.execSQL("CREATE TABLE "+ DATABASE_TABLE + " (" + KEY_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + PROJECT_NAME + " TEXT NOT NULL, " + PROJECT_ID + " INTEGER, " + PROJECT_START_DATE + " TEXT, " + PROJECT_FINISH_DATE + " TEXT, " + PROJECT_DIFFICULTY + " TEXT, " + PROJECT_STATUS + " TEXT);" ); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub db.execSQL("DROP TABLE IF EXIST " + DATABASE_NAME); onCreate(db); } } public projectdatabase (Context c) { projectdbContext = c; } public projectdatabase open() { //Open database ourHelper = new DbHelper(projectdbContext); projectDatabase = ourHelper.getWritableDatabase(); return this; } public void close() { //Close database ourHelper.close(); } public long createEntry(String name, String pid, String startdate, String finishdate, String difficulty, String Status) { //Enter project data into database ContentValues cv = new ContentValues(); cv.put(PROJECT_NAME, name); cv.put(PROJECT_ID, pid); cv.put(PROJECT_START_DATE, startdate); cv.put(PROJECT_FINISH_DATE, finishdate); cv.put(PROJECT_DIFFICULTY, difficulty); cv.put(PROJECT_STATUS, Status); return projectDatabase.insert(DATABASE_TABLE, null, cv); } public String getData() { //Retrieve all project data String[] columns = new String[] {KEY_ROWID, PROJECT_NAME, PROJECT_ID, PROJECT_START_DATE, PROJECT_FINISH_DATE, PROJECT_DIFFICULTY, PROJECT_STATUS}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null); String result = ""; int iRow = c.getColumnIndex(KEY_ROWID); int iName = c.getColumnIndex(PROJECT_NAME); int iID = c.getColumnIndex(PROJECT_ID); int iStartDate = c.getColumnIndex(PROJECT_START_DATE); int iFinishDate = c.getColumnIndex(PROJECT_FINISH_DATE); int iDifficulty = c.getColumnIndex(PROJECT_DIFFICULTY); int iStatus = c.getColumnIndex(PROJECT_STATUS); for(c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { result = result + c.getString(iRow) + "|" + c.getString(iName) + "|" + c.getString(iID) + "|" + c.getString(iStartDate) + "|" + c.getString(iFinishDate) + "|" + c.getString(iDifficulty) + "|" + c.getString(iStatus) + "\n"; } return result; } public Cursor getDataforDisplay () { //Project data for list view String[] columns = new String[] {KEY_ROWID, PROJECT_NAME, PROJECT_FINISH_DATE, PROJECT_DIFFICULTY, PROJECT_STATUS}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, null, null, null, null, null); c.moveToFirst(); return c; } public String getProjectName(String id) { String[] columns = new String[] {PROJECT_NAME,KEY_ROWID}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, KEY_ROWID + "=" + id, null, null, null, null); if(c != null) { int iName = c.getColumnIndex(PROJECT_NAME); c.moveToFirst(); String name = c.getString(iName); return name; } return null; } 

public String getProjectStatus (String id) {

  String[] columns = new String[] {PROJECT_STATUS,KEY_ROWID}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, KEY_ROWID + "=" + id, null, null, null, null); if(c != null) { int iStatus = c.getColumnIndex(PROJECT_STATUS); c.moveToFirst(); String status = c.getString(iStatus); return status; } return null; } 

public String getProjectDifficulty (String id) {

 String[] columns = new String[] {PROJECT_DIFFICULTY,KEY_ROWID}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, KEY_ROWID + "=" + id, null, null, null, null); if(c != null) { int iDiff = c.getColumnIndex(PROJECT_DIFFICULTY); c.moveToFirst(); String diff = c.getString(iDiff); return diff; } return null; 

}

public String getProjectstartdate (String id) {

 String[] columns = new String[] {PROJECT_START_DATE,KEY_ROWID}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, KEY_ROWID + "=" + id, null, null, null, null); if(c != null) { int iSdate = c.getColumnIndex(PROJECT_START_DATE); c.moveToFirst(); String sdate = c.getString(iSdate); return sdate; } return null; 

}

public String getProjectfinishdate (String id) {

 String[] columns = new String[] {PROJECT_FINISH_DATE,KEY_ROWID}; Cursor c = projectDatabase.query(DATABASE_TABLE, columns, KEY_ROWID + "=" + id, null, null, null, null); if(c != null) { int iFdate = c.getColumnIndex(PROJECT_FINISH_DATE); c.moveToFirst(); String fdate = c.getString(iFdate); return fdate; } return null; 

}

public void updateProject (String id, String PName, String FDate) {// método para actualizar la base de datos

 ContentValues cvUpdate = new ContentValues(); cvUpdate.put(PROJECT_NAME, PName); cvUpdate.put(PROJECT_FINISH_DATE, FDate); projectDatabase.update(DATABASE_TABLE, cvUpdate, KEY_ROWID + "=" + id, null); 

}

}

EDIT: Si reemplazo updateProject () método con cualquier otro método de la clase de base de datos, el error desaparece y la aplicación se ejecuta sin ningún problema.

 public class DatabaseHelper extends SQLiteOpenHelper { private static DatabaseHelper mDBHelper; public static DatabaseHelper getInstance(Context ctx) { if (mDBHelper == null) { //this will ensure no multiple instances out there. mDBHelper = new DatabaseHelper(ctx.getApplicationContext()); } return mDBHelper; } } 

 private SQLiteDatabase db; public synchronized SQLiteDatabase open() throws SQLException { if(db ==null){ db = DBHelper.getWritableDatabase(); } return db; } 

 public synchronized void close() { //do nothing. This is a trick. } 

 public projectdatabase open() { ourHelper = new DbHelper(projectdbContext); projectDatabase = ourHelper.getWritableDatabase(); return this; } public void close() { ourHelper.close(); } 

 public void close() { projectDatabase.close(); }