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PONot able to retrieve data from DB second time in Android
 

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  1. PONot able to retrieve data from DB second time in Android
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    <p>I have created an app that can save contacts from text box to database. Contacts would be number entered or from default contacts. This app has about 5 edit text.</p> <p>The problem over here is: The first time when I enter the number and click save button the number is getting saved and also gets retrieved properly. When I do the same the second time for a new number. The number is getting saved. When I try to retrieve the numbers from DB I can't see the number. </p> <p>I am using getter and setter methods for storing the transaction values.</p> <p>Below is what I have tried and getting the problem: </p> <p>From edittext to database via getters and setters method.</p> <pre><code> Contacts contacts = new Contacts(); //arrsendcontactsinverse is the arraylist which stores all the numbers contacts.setArrcontactsofbean(arrsendcontactsinverse); database.addContacts(contacts); </code></pre> <p>//to retrieve the data i am using the code below.</p> <pre><code>db = new DataBase(this); if(db.getContactsCount()&gt;0) { Contacts contactFromDb = db.getContacts(); contact1.setText(contactFromDb.getArrcontactsofbean().get(0)); contact2.setText(contactFromDb.getArrcontactsofbean().get(1)); contact3.setText(contactFromDb.getArrcontactsofbean().get(2)); contact4.setText(contactFromDb.getArrcontactsofbean().get(3)); contact5.setText(contactFromDb.getArrcontactsofbean().get(4)); } } </code></pre> <p>This is the code in the DataBase.java.</p> <pre><code>public class DataBase extends SQLiteOpenHelper { private static final int DATABASE_VERSION = 1; private static final String TABLE_CONTACTS = "ContactsTable"; private static final String KEY_CONTACT1 = "contact1"; //column name private static final String KEY_CONTACT2 = "contact2"; //column name private static final String KEY_CONTACT3 = "contact3"; //column name private static final String KEY_CONTACT4 = "contact4"; //column name private static final String KEY_CONTACT5 = "contact5"; //column name ArrayList&lt;String&gt; arrcontactofdatabasehandler= new ArrayList&lt;String&gt;(); public Databasehandler(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } public void onCreate(SQLiteDatabase db) { String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS +"(" +KEY_CONTACT1+ " TEXT," +KEY_CONTACT2+ " TEXT," +KEY_CONTACT3+ " TEXT," +KEY_CONTACT4+ " TEXT," +KEY_CONTACT5+ " TEXT," + ")"; db.execSQL(CREATE_CONTACTS_TABLE); } // Adding new contact void addContacts(Contacts contacts) { SQLiteDatabase db = this.getWritableDatabase(); ContentValues values = new ContentValues(); values.put(KEY_CONTACT1,contacts.getArrcontactsofbean().get(0)); values.put(KEY_CONTACT2,contacts.getArrcontactsofbean().get(1)); values.put(KEY_CONTACT3,contacts.getArrcontactsofbean().get(2)); values.put(KEY_CONTACT4,contacts.getArrcontactsofbean().get(3)); values.put(KEY_CONTACT5,contacts.getArrcontactsofbean().get(4)); db.insert(TABLE_CONTACTS, null, values); db.close(); } // Getting contacts Contacts getContacts() { String selectQuery = "SELECT * FROM " + TABLE_CONTACTS; SQLiteDatabase db = this.getWritableDatabase(); Cursor cursor = db.rawQuery(selectQuery, null); Contacts contacts = new Contacts(); // looping through all rows and adding to list if (cursor.moveToFirst()) { do { arrcontactofdatabasehandler.add(cursor.getString(0)); arrcontactofdatabasehandler.add(cursor.getString(1)); arrcontactofdatabasehandler.add(cursor.getString(2)); arrcontactofdatabasehandler.add(cursor.getString(3)); arrcontactofdatabasehandler.add(cursor.getString(4)); } while (cursor.moveToNext()); } contacts.setArrcontactsofbean(arrcontactofdatabasehandler); cursor.close(); db.close(); return contacts; } public int getContactsCount() { String countQuery = "SELECT * FROM " + TABLE_CONTACTS; SQLiteDatabase db = this.getReadableDatabase(); Cursor cursor = db.rawQuery(countQuery, null); int count = cursor.getCount(); cursor.close(); // return count db.close(); return count; } public void dropTable() { SQLiteDatabase db = this.getWritableDatabase(); db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS); String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS +"(" +KEY_CONTACT1+ " TEXT," +KEY_CONTACT2+ " TEXT," +KEY_CONTACT3+ " TEXT," +KEY_CONTACT4+ " TEXT," +KEY_CONTACT5+ " TEXT," + ")"; db.execSQL(CREATE_CONTACTS_TABLE); db.close(); } } </code></pre> <p>Contacts.java.(these are the getter and setter methods )</p> <pre><code> public class Contacts { ArrayList&lt;String&gt; arrcontactsofbean= new ArrayList&lt;String&gt;(); public Contacts() { } public ArrayList&lt;String&gt; getArrcontactsofbean() { return arrcontactsofbean; } public void setArrcontactsofbean(ArrayList&lt;String&gt; arrcontactsofbean) { this.arrcontactsofbean = arrcontactsofbean; } } </code></pre> <p>I couldn't find out the exact problem here.</p>
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    1. USDevAndro
    1. USDevAndro
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. PONot able to retrieve data from DB second time in Android
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      1. VTUpMod
    1. COpost the whole class. where is your insert method?
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      1. PONot able to retrieve data from DB second time in Android
      1. USStefan Beike
    2. COI have done it. Thanks!
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      1. PONot able to retrieve data from DB second time in Android
      1. USDevAndro
    3. COCan you place the code where you are retrieving the contacts from contacts object?
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      1. PONot able to retrieve data from DB second time in Android
      1. USuser_CC
 

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