Question

i want to use search in my db. so i use several codes that i will tag them. i use 2 row , one for names and the other for description for name.(something like dictionary). now this is my code and this is my helper for search.
the lines with new comment , i add them to code manually.

public class SQLiteCountryAssistant extends SQLiteOpenHelper
{
private static final String DB_NAME = "usingsqlite.db";
private static final int DB_VERSION_NUMBER = 1;
private static final String DB_TABLE_NAME = "countries";
private static final String DB_COLUMN_1_NAME = "country_name";
private static final String DB_COLUMN_2_DESCRIPTION = "country_description"; //new

private static final String DB_CREATE_SCRIPT = "create table " + DB_TABLE_NAME +
                        " (_id integer primary key autoincrement, " +
                        "country_name text not null);)";

private SQLiteDatabase sqliteDBInstance = null;

public SQLiteCountryAssistant(Context context)
{
    super(context, DB_NAME, null, DB_VERSION_NUMBER);
}

@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
    // TODO: Implement onUpgrade
}

@Override
public void onCreate(SQLiteDatabase sqliteDBInstance)
{
    Log.i("onCreate", "Creating the database...");
    sqliteDBInstance.execSQL(DB_CREATE_SCRIPT);
}

public void openDB() throws SQLException
{
    Log.i("openDB", "Checking sqliteDBInstance...");
    if(this.sqliteDBInstance == null)
    {
        Log.i("openDB", "Creating sqliteDBInstance...");
        this.sqliteDBInstance = this.getWritableDatabase();
    }
}

public void closeDB()
{
    if(this.sqliteDBInstance != null)
    {
        if(this.sqliteDBInstance.isOpen())
            this.sqliteDBInstance.close();
    }
}

public long insertCountry(String countryName, String Discription) //new
{
    ContentValues contentValues = new ContentValues();
    contentValues.put(DB_COLUMN_1_NAME, countryName);
    contentValues.put(DB_COLUMN_2_DESCRIPTION, Discription); //new
    Log.i(this.toString() + " - insertCountry", "Inserting: " + countryName);
    Log.i(this.toString() + " - insertDescription", "Inserting: " + Discription); //new
    return this.sqliteDBInstance.insert(DB_TABLE_NAME, null, contentValues);
}

public boolean removeCountry(String countryName)
{
    int result = this.sqliteDBInstance.delete(DB_TABLE_NAME, "country_name='" 
            + countryName + "'", null);

    if(result > 0)
        return true;
    else
        return false;
}

public long updateCountry(String oldCountryName, String newCountryName, String Description)
{ //new
    ContentValues contentValues = new ContentValues();
    contentValues.put(DB_COLUMN_1_NAME, newCountryName);
    contentValues.put(DB_COLUMN_2_DESCRIPTION, Description); //new
    return this.sqliteDBInstance.update(DB_TABLE_NAME, contentValues, "country_name='" 
            + oldCountryName + "'", null);
}

public String[] getAllCountries()
{
    Cursor cursor = this.sqliteDBInstance.query(DB_TABLE_NAME, 
            new String[] {DB_COLUMN_1_NAME}, null, null, null, null, null);

    if(cursor.getCount() >0)
    {
        String[] str = new String[cursor.getCount()];
        int i = 0;

        while (cursor.moveToNext())
        {
             str[i] = cursor.getString(cursor.getColumnIndex(DB_COLUMN_1_NAME));
             i++;
         }
        return str;
    }
    else
    {
        return new String[] {};
    }
}

public String[] getAllDescriptions()
{
    Cursor cursor = this.sqliteDBInstance.query(DB_TABLE_NAME, 
            new String[] {DB_COLUMN_2_DESCRIPTION}, null, null, null, null, null);

    if(cursor.getCount() > 0)
    {
        String[] str = new String[cursor.getCount()];
        int i = 0;

        while (cursor.moveToNext())
        {
             str[i] = cursor.getString(cursor.getColumnIndex(DB_COLUMN_2_DESCRIPTION));
             i++;
         }
        return str;
    }
    else
    {
        return new String[] {};
    }
}

/*** new ***/
public String getDescription(String username) {
    Cursor cursor = this.sqliteDBInstance.query(DB_TABLE_NAME, 
            new String[] {DB_COLUMN_2_DESCRIPTION}, null, null, null, null, null);


    if ((cursor.getCount() == 0) || !cursor.moveToFirst()) {
        return null;
    }

    String DES = new String(); 
    DES = cursor.getString(cursor.getColumnIndex(DB_COLUMN_2_DESCRIPTION));
    return DES;
}  
}

in the last function with /*** new ***/, i use search code. i think my problem must be in here…

public class UsingSQLite extends Activity
{
private SQLiteCountryAssistant sqlliteCountryAssistant;

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    final AutoCompleteTextView textView = (AutoCompleteTextView) 
        findViewById(R.id.autocompleteCountry);

    sqlliteCountryAssistant = new SQLiteCountryAssistant(UsingSQLite.this);
    sqlliteCountryAssistant.openDB();

    // Insert a few countries that begin with "C"
    sqlliteCountryAssistant.insertCountry("Cambodia", "good country");
    sqlliteCountryAssistant.insertCountry("Cameroon", "where is it??");
    sqlliteCountryAssistant.insertCountry("Canada", "i like it :D");
    sqlliteCountryAssistant.insertCountry("Cape Verde", "!!!!!");
    sqlliteCountryAssistant.insertCountry("Cayman Islands", "it must be an island");
    sqlliteCountryAssistant.insertCountry("Chad", "what is that?");
    sqlliteCountryAssistant.insertCountry("Chile", "really, i don't know it!");
    sqlliteCountryAssistant.insertCountry("China", "TOO much big...");

    //sqlliteCountryAssistant.removeCountry("Chad");
    //sqlliteCountryAssistant.updateCountry("Canada", "Costa Rica");

    String[] countries = sqlliteCountryAssistant.getAllCountries();

    // Print out the values to the log
    for(int i = 0; i < countries.length; i++)
    {
        Log.i(this.toString(), countries[i]);
    }

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_item, 
            countries);

    textView.setAdapter(adapter);
    textView.setOnItemClickListener(new OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view, int position,
                long rowId) {
            String selection = (String) parent.getItemAtPosition(position);
            TextView tv1 = (TextView) findViewById(R.id.textView1);
            tv1.setText("Description : " + sqlliteCountryAssistant.getDescription(selection));
        }
    });

}

public void onDestroy()
{
    super.onDestroy();
    sqlliteCountryAssistant.close();
}
}

this is my code. i type my word, word appear then i touch it. in this position , i must see the description. but i get error. this is my log cat.

08-04 14:14:26.713: D/dalvikvm(25317): GC_EXTERNAL_ALLOC freed 56K, 52% free 2741K/5639K,      external 264K/519K, paused 79ms
08-04 14:14:28.715: I/Database(25317): sqlite returned: error code = 1, msg = no such column: country_description
08-04 14:14:28.715: D/AndroidRuntime(25317): Shutting down VM
08-04 14:14:28.715: W/dalvikvm(25317): threadid=1: thread exiting with uncaught exception (group=0x401ec560)
08-04 14:14:28.735: E/AndroidRuntime(25317): FATAL EXCEPTION: main
08-04 14:14:28.735: E/AndroidRuntime(25317): android.database.sqlite.SQLiteException: no such column: country_description: , while compiling: SELECT country_description FROM countries
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteCompiledSql.native_compile(Native Method)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteCompiledSql.compile(SQLiteCompiledSql.java:92)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteCompiledSql.<init>(SQLiteCompiledSql.java:65)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteProgram.<init>(SQLiteProgram.java:83)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteQuery.<init>(SQLiteQuery.java:49)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteDirectCursorDriver.query(SQLiteDirectCursorDriver.java:42)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteDatabase.rawQueryWithFactory(SQLiteDatabase.java:1356)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteDatabase.queryWithFactory(SQLiteDatabase.java:1235)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1189)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.database.sqlite.SQLiteDatabase.query(SQLiteDatabase.java:1271)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at com.usingsqlite.SQLiteCountryAssistant.getDescription(SQLiteCountryAssistant.java:140)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at com.usingsqlite.UsingSQLite$1.onItemClick(UsingSQLite.java:61)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.widget.AutoCompleteTextView.performCompletion(AutoCompleteTextView.java:952)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.widget.AutoCompleteTextView.access$1400(AutoCompleteTextView.java:92)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.widget.AutoCompleteTextView$DropDownItemClickListener.onItemClick(AutoCompleteTextView.java:1489)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.widget.AdapterView.performItemClick(AdapterView.java:284)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.widget.ListView.performItemClick(ListView.java:3513)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.widget.AbsListView$PerformClick.run(AbsListView.java:1849)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.os.Handler.handleCallback(Handler.java:587)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.os.Handler.dispatchMessage(Handler.java:92)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.os.Looper.loop(Looper.java:130)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at android.app.ActivityThread.main(ActivityThread.java:3835)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at java.lang.reflect.Method.invokeNative(Native Method)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at java.lang.reflect.Method.invoke(Method.java:507)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:858)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
08-04 14:14:28.735: E/AndroidRuntime(25317):    at dalvik.system.NativeStart.main(Native Method)
08-04 14:14:30.957: I/Process(25317): Sending signal. PID: 25317 SIG: 9

i hope someone can help me.

Answer 1

[1] First of all delete the created database from your AVD

OR If you have installed it on Real Device, then Uninstall it from device

because the table already created there has not column DB_COLUMN_2_DESCRIPTION(“country_description”)

[2] Update your DB_CREATE_SCRIPT as following

private static final String DB_CREATE_SCRIPT = "CREATE TABLE " + DB_TABLE_NAME
     + " (_id INTEGER PRIMARY KEY AUTOINCREMENT, "
     + DB_COLUMN_1_NAME + " TEXT, "
     + DB_COLUMN_2_DESCRIPTION + " TEXT);";

And then Install and run the whole application from starting activity

---

EDIT
For you bean-class can a java file Countries.java::

public Countries {
    String name, desc;

    public Countries(String name, String desc) {
         this.name = name;
         this.desc = desc;
    }
}

When you fill cursor read data for both name and description from your database table.

Then from that fill your

ArrayList<Countries> countriesList = new ArrayList<Countries>();

using iterator of cursor.

And when you want to make search data then search it from this filled countriesList.