graph

package com.int
import android.R.layout;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextWatcher;
import android.view.Display;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;

import net.astesana.javaluator.DoubleEvaluator;

import android.content.Context;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.Point;
/**
*
* @package Graph.java
* @version 1.0
* @created 23. November 2011
* @updated 16. November 2012
* @copyright (c) 2011-2012 S. Ditlefsen
* @license http://opensource.org/licenses/gpl-license.php GNU Public License
* @about
*
*/

public class Graph extends Activity {

    // Holding variables for input
    private String equation;
    private EditText editTextEquation;

    GraphDrawer graphView;

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


        /*- Get variables from layout graph.xml ------------------------------------- */
        editTextEquation = (EditText) findViewById(R.id.editTextEquation);
        editTextEquation.addTextChangedListener(watcherEditTextEquation);

        /*- Draw pressed ------------------------------------------------------------ */
        Button buttonDraw = (Button)findViewById(R.id.buttonDraw);
        buttonDraw.setOnClickListener(buttonDrawWatcher); // Register the onClick listener


    }

    /*- Update string variable -------------------------- */
    private TextWatcher watcherEditTextEquation = new TextWatcher(){
        public void onTextChanged(CharSequence s, int start, int before, int count) {
            // Try to get string
            try{
                dataEditTextEquation = s.toString();
            } // end try
            catch(NumberFormatException e){
                dataEditTextEquation = "";
            } // end catch
        }
        public void afterTextChanged(Editable s) {
        }
        public void beforeTextChanged(CharSequence s, int start, int count, int after) {
        }
    }; // end editText

    /*- table button was pressed ---------------------------------------------------- */
    private OnClickListener buttonDrawWatcher = new OnClickListener() {
         public void onClick(View v) {


            if(dataEditTextEquation != null){
                    generate_table_and_graph();
            } // if

         } // onClick
     }; // onClickListner


     private void generate_table_and_graph(){
         graphView = new GraphDrawer(this);
         graphView.putExtra(tempDataEditTextEquation);
         graphView.setBackgroundColor(Color.WHITE);
         setContentView(graphView);
     } // generate_table_and_graph


}