TreeActivity.java

package com.enoxonenetwork.one.treelights;

import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class TreeActivity extends Activity {
    TextView amt = null;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_tree);
        final Button calculate = (Button) findViewById(R.id.button1);
        final EditText ht = (EditText) findViewById(R.id.editText1);
        final EditText rf = (EditText) findViewById(R.id.EditText01);
        final EditText ri = (EditText) findViewById(R.id.EditText02);
        final EditText sp = (EditText) findViewById(R.id.EditText03);
        final EditText sgs = (EditText) findViewById(R.id.EditText04);
        final EditText sgh = (EditText) findViewById(R.id.EditText05);
        amt = (TextView) findViewById(R.id.amt);
        amt.setText("");
        calculate.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                float height = (float) (Integer.parseInt(ht.getText().toString()));
                float rad = (float) (Integer.parseInt(rf.getText().toString()) + (Integer.parseInt(ri.getText().toString()) / 12));
                float spacing = (float) ((Integer.parseInt(sp.getText().toString())) / 12);
                float sags = (float) (Integer.parseInt(sgs.getText().toString()));
                float sagh = (float) (Integer.parseInt(sgh.getText().toString()));
                int lights = (lights(height, rad, spacing, sags = 0, sagh = 0));
                amt.setText("You will need around " + Integer.toString(lights) + " feet of lights.");

            }
        });
    }

    public int lights(float height, float radius, float spacing, float sags, float sagh) {
         int length = 0;
         int times = (int) (height / spacing);
         float ratio = radius / height;
         for(int i=0;i<times;i++) {
             float h = (height - (i*spacing));
             float r = h * ratio;
             float c = (float) (2*(Math.PI)*r);
             length = (int) (length + c);
         }
         return length;
    }

    public int sag(float sag) {
        int length = 0;

        return length;
    }

    public void basicdialog(String title, String message){
        AlertDialog alertDialog = new AlertDialog.Builder(this).create();
        alertDialog.setTitle(title);
        alertDialog.setMessage(message);
        alertDialog.setButton("OK", new DialogInterface.OnClickListener() {
        public void onClick(DialogInterface dialog, int which) {

        } });
        alertDialog.setIcon(R.drawable.ic_launcher);
        alertDialog.show();
        }
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.activity_tree, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle item selection
        switch (item.getItemId()) {
            case R.id.menu_about:
                Intent aboutActivity = new Intent(getBaseContext(),About.class);
                startActivity(aboutActivity);
                return true;
            case R.id.menu_help:
                Intent helpActivity = new Intent(getBaseContext(),Help.class);
                startActivity(helpActivity);
                return true;
        }
        return false;
    }
}