title: Cant find the mistake in code
body: <p>Hi people i have a small problem i cganged the sql database code and my activity code... Now the app crashes when i try to start the activity(1). I am giving you the sql database code too(2). And the text from logcat(3).</p>
  
  <p><strong>(1):</strong></p>
  
  <pre><code>package com.peky.smartornot;
  
  import android.os.Bundle;
  import android.app.Activity;
  import android.view.Menu;
  import android.view.View;
  import android.widget.Button;
  import android.widget.TabHost;
  import android.widget.Toast;
  import android.widget.TabHost.TabSpec;
  import android.widget.TextView;
  
  public class POV1 extends Activity {
      Sql ulaz = new Sql(this);
      TextView joke4text;
      TextView joke3text;
      TextView joke2text;
      TextView joke1text;
  
      @Override
      protected void onCreate(Bundle savedInstanceState) {
          super.onCreate(savedInstanceState);
          setContentView(R.layout.activity_pov1);
          sve();
      }
  
      public void sve() {
          // TODO Auto-generated method stub
          ulaz.open();
          int joker1 = ulaz.procitaj(), joker2 = ulaz.procitaj2(), joker3 = ulaz
                  .procitaj3(), joker4 = ulaz.procitaj4();
          ulaz.close();
          TabHost joker = (TabHost) findViewById(R.id.tabhost);
          joker.setup();
          TabSpec izgled = joker.newTabSpec("tag1");
          izgled.setContent(R.id.tab1);
          izgled.setIndicator("Joker 1");
          joker.addTab(izgled);
          izgled = joker.newTabSpec("tag2");
          izgled.setContent(R.id.tab2);
          izgled.setIndicator("Joker 2");
          joker.addTab(izgled);
          izgled = joker.newTabSpec("tag3");
          izgled.setContent(R.id.tab3);
          izgled.setIndicator("Joker 3");
          joker.addTab(izgled);
          izgled = joker.newTabSpec("tag4");
          izgled.setContent(R.id.tab4);
          izgled.setIndicator("Joker 4");
          joker.addTab(izgled);
          joke1text = (TextView) findViewById(R.id.joker1text);
          joke1text.setText("You have " + joker1 + " jokers !");
          joke2text = (TextView) findViewById(R.id.joker2text);
          joke2text.setText("You have " + joker2 + " jokers !");
          joke3text = (TextView) findViewById(R.id.joker3text);
          joke3text.setText("You have " + joker3 + " jokers !");
          joke4text = (TextView) findViewById(R.id.joker4text);
          joke4text.setText("You have " + joker4 + " jokers !");
      }
  
      public void joker1(View view) {
          Button netocan = (Button) findViewById(R.id.button5);
          Button netocan2 = (Button) findViewById(R.id.button4);
          Button netocan3 = (Button) findViewById(R.id.button2);
          ulaz.open();
          int joker1=ulaz.procitaj(),joker2,joker3,joker4;
          ulaz.close();
          if (joker1 != 0) {
              if(netocan.getVisibility()==View.VISIBLE){
                  netocan.setVisibility(View.INVISIBLE);
                  ulaz.open();
                  joker1=joker1-1;
                  joker2=ulaz.procitaj2();
                  joker3=ulaz.procitaj3();
                  joker4=ulaz.procitaj4();
                  ulaz.spremijoker(joker1, joker2, joker3, joker4);
                  ulaz.close();
                  joke1text = (TextView) findViewById(R.id.joker1text);
                  joke1text.setText("You have " + joker1 + " jokers !");
              }else if(netocan2.getVisibility()==View.VISIBLE){
                  netocan2.setVisibility(View.INVISIBLE);
                  ulaz.open();
                  joker1=joker1-1;
                  joker2=ulaz.procitaj2();
                  joker3=ulaz.procitaj3();
                  joker4=ulaz.procitaj4();
                  ulaz.spremijoker(joker1, joker2, joker3, joker4);
                  ulaz.close();
                  joke1text = (TextView) findViewById(R.id.joker1text);
                  joke1text.setText("You have " + joker1 + " jokers !");
              }else if(netocan3.getVisibility()==View.VISIBLE){
                  netocan3.setVisibility(View.INVISIBLE);
                  ulaz.open();
                  joker1=joker1-1;
                  joker2=ulaz.procitaj2();
                  joker3=ulaz.procitaj3();
                  joker4=ulaz.procitaj4();
                  ulaz.spremijoker(joker1, joker2, joker3, joker4);
                  ulaz.close();
                  joke1text = (TextView) findViewById(R.id.joker1text);
                  joke1text.setText("You have " + joker1 + " jokers !");
              }else{
                  Toast imasodgovor=Toast.makeText(getApplicationContext(), "You can not use more JOKERS1 on this question !", Toast.LENGTH_SHORT);
                  imasodgovor.show();
              }
  
          }else{
              Toast nemasjokera=Toast.makeText(getApplicationContext(), "You dont have enought JOKERS1 !", Toast.LENGTH_SHORT);
              nemasjokera.show();
          }
  
      }
  
      public void joker4(View view) {
          ulaz.open();
          int joker1,joker2,joker3,joker4=ulaz.procitaj4();
          ulaz.close();
          Button netocan = (Button) findViewById(R.id.button5);
          Button netocan2 = (Button) findViewById(R.id.button4);
          Button netocan3 = (Button) findViewById(R.id.button2);
          if (joker4 != 0) {
              if(netocan.getVisibility()==View.VISIBLE || netocan2.getVisibility()==View.VISIBLE || netocan3.getVisibility()==View.VISIBLE){
              netocan.setVisibility(View.INVISIBLE);
              netocan2.setVisibility(View.INVISIBLE);
              netocan3.setVisibility(View.INVISIBLE);
              ulaz.open();
              joker1=ulaz.procitaj();
              joker2=ulaz.procitaj2();
              joker3=ulaz.procitaj3();
              joker4=joker4 - 1;;
              ulaz.spremijoker(joker1, joker2, joker3, joker4);
              ulaz.close();
              joke4text = (TextView) findViewById(R.id.joker4text);
              joke4text.setText("You have " + joker4 + " jokers !");}else{
                  Toast imasodgovor=Toast.makeText(getApplicationContext(), "You can not use more JOKERS4 on this question !", Toast.LENGTH_SHORT);
                  imasodgovor.show();
              }
          } else {
              Toast jokertext = Toast.makeText(getApplicationContext(),
                      "Not enought JOKERS4", Toast.LENGTH_SHORT);
              jokertext.show();
  
          }
      }
  
      public void joker2(View view){
  
      }
      public void tocan(View view){
      }
      public void netocanodgovor(View view) {
      }
  
      @Override
      public boolean onCreateOptionsMenu(Menu menu) {
          // Inflate the menu; this adds items to the action bar if it is present.
          getMenuInflater().inflate(R.menu.pov1, menu);
          return false;
      }
  
  }
  </code></pre>
  
  <p><strong>(2):</strong></p>
  
  <pre><code>package com.peky.smartornot;
  
  import android.content.ContentValues;
  import android.content.Context;
  import android.database.Cursor;
  import android.database.sqlite.SQLiteDatabase;
  import android.database.sqlite.SQLiteOpenHelper;
  
  public class Sql {
      public static final String KEY_ROWID = "_id";
      public static final String KEY_JOKER1 = "joker";
      public static final String KEY_JOKER2 = "joker2";
      public static final String KEY_JOKER3 = "joker3";
      public static final String KEY_JOKER4 = "joker4";
  
      private static final String DATABASE_NAME = "SQL";
      private static final String DATABASE_TABLE = "peoples_table";
      private static final int DATABASE_VERSION = 1;
  
      private DbHelper ourHelper;
      private final Context ourContext;
      private SQLiteDatabase ourDatabase;
  
      private static class DbHelper extends SQLiteOpenHelper {
  
          public DbHelper(Context context) {
              super(context, DATABASE_NAME, null, DATABASE_VERSION);
              // TODO Auto-generated constructor stub
          }
  
          @Override
          public void onCreate(SQLiteDatabase db) {
              // TODO Auto-generated method stub
              db.execSQL("CREATE TABLE " + DATABASE_TABLE + " (" + KEY_ROWID
                      + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_JOKER1
                      + " INTEGER, " + KEY_JOKER2 + " INTEGER, " + KEY_JOKER3
                      + " INTEGER, " + KEY_JOKER4 + " INTEGER);");
          }
  
          @Override
          public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
              // TODO Auto-generated method stub
              db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE);
              onCreate(db);
          }
  
      }
  
      public Sql(Context c) {
          ourContext = c;
      }
  
      public Sql open() {
          ourHelper = new DbHelper(ourContext);
          ourDatabase = ourHelper.getWritableDatabase();
          return this;
      }
  
      public void close() {
          ourHelper.close();
      }
  
      public long spremijoker(int joker1, int joker2, int joker3, int joker4) {
          // TODO Auto-generated method stub
          ContentValues cv = new ContentValues();
  
          cv.put(KEY_JOKER1, joker1);
  
          cv.put(KEY_JOKER2, joker2);
  
          cv.put(KEY_JOKER3, joker3);
  
          cv.put(KEY_JOKER4, joker4);
  
          return ourDatabase.insert(DATABASE_TABLE, null, cv);
  
      }
  
      public int procitaj() {
          // TODO Auto-generated method stub
          String[] columns = new String[] { KEY_ROWID, KEY_JOKER1 };
          Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null,
                  null, null);
          int citac = 0;
          int iJokerammount = c.getColumnIndex(KEY_JOKER1);
          c.moveToLast();
          citac = c.getInt(iJokerammount);
  
          return citac;
  
      }
  
      public int procitaj2() {
          // TODO Auto-generated method stub
          // TODO Auto-generated method stub
          String[] columns = new String[] { KEY_ROWID, KEY_JOKER2 };
          Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null,
                  null, null);
          int citac = 0;
          int iJoker2 = c.getColumnIndex(KEY_JOKER2);
          c.moveToLast();
          citac = c.getInt(iJoker2);
  
          return citac;
  
      }
  
      public int procitaj3() {
          // TODO Auto-generated method stub
          // TODO Auto-generated method stub
          String[] columns = new String[] { KEY_ROWID, KEY_JOKER3 };
          Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null,
                  null, null);
          int citac = 0;
          int iJoker3 = c.getColumnIndex(KEY_JOKER3);
          c.moveToLast();
          citac = c.getInt(iJoker3);
  
          return citac;
  
      }
  
      public int procitaj4() {
          // TODO Auto-generated method stub
          // TODO Auto-generated method stub
          String[] columns = new String[] { KEY_ROWID, KEY_JOKER4 };
          Cursor c = ourDatabase.query(DATABASE_TABLE, columns, null, null, null,
                  null, null);
          int citac = 0;
          int iJoker4 = c.getColumnIndex(KEY_JOKER4);
          c.moveToLast();
          citac = c.getInt(iJoker4);
  
          return citac;
  
      }
  
  }
  </code></pre>
  
  <p>(3):</p>
  
  <pre><code>03-16 19:32:11.580: E/AndroidRuntime(26569): FATAL EXCEPTION: main
  03-16 19:32:11.580: E/AndroidRuntime(26569): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.peky.smartornot/com.peky.smartornot.POV1}: android.database.CursorIndexOutOfBoundsException: Index -1 requested, with a size of 0
  03-16 19:32:11.580: E/AndroidRuntime(26569):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1970)
  </code></pre>