title: java.lang.IllegalStateException:getWritableDatabase called recursively
body: <p><strong>Please help me to rsolve the error :</strong>    </p>
  
  <pre><code>D/AndroidRuntime(836): Shutting down VM
  W/dalvikvm(836): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
  E/AndroidRuntime(836): FATAL EXCEPTION: main
  E/AndroidRuntime(836): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.FirstProject/com.example.FirstProject.List}: java.lang.IllegalStateException: getWritableDatabase called recursively
  E/AndroidRuntime(836):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
  E/AndroidRuntime(836):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
  E/AndroidRuntime(836):  at android.app.ActivityThread.access$2300(ActivityThread.java:125)
  E/AndroidRuntime(836):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
  E/AndroidRuntime(836):  at android.os.Handler.dispatchMessage(Handler.java:99)
  E/AndroidRuntime(836):  at android.os.Looper.loop(Looper.java:123)
  E/AndroidRuntime(836):  at android.app.ActivityThread.main(ActivityThread.java:4627)
  E/AndroidRuntime(836):  at java.lang.reflect.Method.invokeNative(Native Method)
  E/AndroidRuntime(836):  at java.lang.reflect.Method.invoke(Method.java:521)
  E/AndroidRuntime(836):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
  E/AndroidRuntime(836):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
  E/AndroidRuntime(836):  at dalvik.system.NativeStart.main(Native Method)
  E/AndroidRuntime(836): Caused by: java.lang.IllegalStateException: getWritableDatabase called recursively
  E/AndroidRuntime(836):  at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:81)
  E/AndroidRuntime(836):  at com.example.FirstProject.Database.onCreate(Database.java:36)
  E/AndroidRuntime(836):  at android.database.sqlite.SQLiteOpenHelper.getWritableDatabase(SQLiteOpenHelper.java:106)
  E/AndroidRuntime(836):  at android.database.sqlite.SQLiteOpenHelper.getReadableDatabase(SQLiteOpenHelper.java:158)
  E/AndroidRuntime(836):  at com.example.FirstProject.List.onCreate(List.java:38)
  E/AndroidRuntime(836):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
  E/AndroidRuntime(836):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
  E/AndroidRuntime(836):  ... 11 more
  </code></pre>
  
  <p><strong>code:</strong></p>
  
  <pre><code>package com.example.FirstProject;
  
  import android.app.Activity;
  import android.app.ListActivity;
  import android.content.Intent;
  import android.database.Cursor;
  import android.database.sqlite.SQLiteDatabase;
  import android.os.Bundle;
  import android.view.View;
  import android.widget.AdapterView;
  import android.widget.AdapterView.OnItemClickListener;
  import android.widget.ArrayAdapter;
  import android.widget.EditText;
  import android.widget.ListAdapter;
  import android.widget.ListView;
  import android.widget.SimpleCursorAdapter;
  import android.widget.TextView;
  import android.widget.Toast;
  
  
  
  public class List extends ListActivity{
  ListView stations;
  protected int tn;
  protected TextView source;
  protected EditText searchText;
  protected ListAdapter adapter;
  protected Cursor cursor;
  
  
   @Override
      public void onCreate(Bundle savedInstanceState)throws IllegalStateException {
          super.onCreate(savedInstanceState);
  
          setContentView(R.layout.screen2);
  
         tn = getIntent().getIntExtra("tn", 0);
         SQLiteDatabase db = (new Database(this)).getReadableDatabase();
        // searchText = (EditText) findViewById (android.R.id.list);
          stations = (ListView) findViewById (android.R.id.list);
  
  
          Cursor cursor = db.rawQuery("SELECT source._id,FROM tinfo WHERE city._id =     Mumbai", new String[]{});
          startManagingCursor(cursor);
  
          adapter = new SimpleCursorAdapter(this,  R.layout.screen2,  cursor, new     String[] {}, new int[] {});
          stations.setAdapter(adapter);
  
   }
  
  }
  </code></pre>