Unable to delete task from sqlite database

I am trying to create a delete function for my app. Currently I have created half of the coding, but I dont know how to get delete my row using my movie title.

This is my Java code:

package com.example.moviemanager;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.AsyncTask;
import android.os.Bundle;
import android.widget.EditText;

public class DeleteMovie extends Activity{
  private Long rowID;
private  EditText edtdeleteMovie;

final DatabaseHandler dh = new DatabaseHandler(DeleteMovie.this);


protected void onCreate(Bundle save){
    super.onCreate(save);
    setContentView(R.layout.deletemoviemenu);

    edtdeleteMovie = (EditText)findViewById(R.id.edtDelete);

    Bundle extras = getIntent().getExtras();
    if(extras != null){
        rowID = extras.getLong("row_id");
        edtdeleteMovie.getText();


    }
}

@Override
protected void onResume(){
    super.onResume();
    deleteMovie();
}

private void deleteMovie(){
    AlertDialog.Builder builder = new AlertDialog.Builder(DeleteMovie.this);
    builder.setTitle("Delete Task");
    builder.setTitle("Are you sure to delete this?");

    builder.setPositiveButton("Delete", new DialogInterface.OnClickListener() {


        @Override
        public void onClick(DialogInterface dialog, int which) {
            // TODO Auto-generated method stub
            AsyncTask<Long, Object, Object>deleteMovie = new AsyncTask<Long, Object, Object>(){
                @Override
                protected Object doInBackground(Long... params){
                    dh.deleteRow(params[0]);
                    return null;
                }

                @Override
                protected void onPostExecute(Object result){
                    finish();
                }
            };
            deleteMovie.execute(new Long[] {rowID});
        }
    }
    );

    builder.setNegativeButton("Cancel", null);
    builder.show();

}

}

This is the DatabaseHandler code:

public boolean deleteRow(long rowId){
    String where = KEY_ROWID + "=" + rowId;
    return db.delete(DATABASE_TABLE, where, null) != 0;
}

I tried searching on the internet but i cant find any solution. It would be great if someone can help me with it.