Update...Delimiter is showing up in my array values caused by Platform or Emulator

When I debug the code below it stores the "," (split delimiter) as a value in the array rawData. When parseDouble gets to that value I get a NumberFormatException. Any ideas?

package com.simplydesign.android.standarddev;

import android.app.Activity;
import android.os.Bundle;
import android.widget.*;
import android.view.*;

public class Main extends Activity {
    /** Called when the activity is first created. */

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

        final Button addBtn = (Button) findViewById(R.id.addBtn);
        final EditText userData = (EditText) findViewById(R.id.editText1);
        final TextView dataCollection = (TextView) findViewById(R.id.textView1);

        addBtn.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                String[] rawData;
                rawData = userData.getText().toString().split(",");
                dataCollection.setText(calculate(rawData));
            }

        });

    }

    public String calculate(String[] a) {

        double[] convertedData = new double[a.length];
        double sum = 0.0;
        StringBuilder output = new StringBuilder();
        int t = 0;

        for (int f = 0; f<a.length;f++){
        convertedData[f] = Double.parseDoub开发者_如何学运维le(a[t]);
        t++;

        }
        for (int k = 0; k < convertedData.length; k++) {
            sum += convertedData[k];
        }
        output.append(sum);
        return output.toString();

    }
}

After a lot of trial and error I have concluded that my problem was coming from a faulty platform / emulator combination. Originally I had my project platform set to 2.1 with an API value of 7.

For whatever reason this was causing problems when I used a comma as a delimiter. It also gave me problems when my numbers had decimal points (the decimal points looked hollow).

Now I have my project set to 1.6 and it works with the comma and decimal points.

Although I found the solution I still don't understand why this is happening. I feel like some of the apps I create need to be on a high platform, at least 2.5. Is 1.6 ok for most apps? Any suggestions on this matter would be GREATLY appreciated.

Try to use TextUtils.split