My android app closes unexpectedly. Eclipse says it can't connect to the local host

Question

I'm creating an android application. It compiles well and eclipse does not spot any errors. However when I run it I get this in the stack trace.

<disconnected>DalvikVM[localhost:8639]  

Here is my code:

package com.warhammerdicerrolleralpha;


import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView;

public class myMain extends Activity 
{

    EditText enternumberofdice;

    TextView textGenerateNumber;

    int number1;

    int number2;

    ImageView i;

    private EditText text, text2, text3;

    private Button btutorial1;

    private int myFaceValue;

    int myNum;

    /**
     * Called when the activity is first created.
     * 
     * @return
     */
    @Override

    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        textGenerateNumber = (TextView) findViewById(R.id.text4);

        number1 = Integer.parseInt(text.getText().toString());

        number2 = Integer.parseInt(text2.getText().toString());

        ImageView i = new ImageView(this);

        i.setAdjustViewBounds(true);

    }

    public void go() 
    {
        while (myNum > 0) 
        {

            textGenerateNumber.setText(String.valueOf(enternumberofdice));

             --myNum;

            return;
        }
    }

    public int roll() 
    {
        int val = (int) (6 * Math.random() + 1); // Range 1-6
        setValue(val);
        return val;
    }

    {
        try 
        {
            myNum = Integer.parseInt(enternumberofdice.getText().toString());
        } 
            catch (NumberFormatException nfe) 
        {
            enternumberofdice.setText("Does not work");
        }
    }

    public int getValue() 
    {
        return myFaceValue;
    }

    public void setValue(int myFaceValue) 
    {
        this.myFaceValue = myFaceValue;

    }

    {
        switch (myFaceValue) 
        {
        case 5:
            i.setImageResource(R.drawable.dicefive);
            break;
        case 1:
            i.setImageResource(R.drawable.diceone);
            break;
        case 3:
            i.setImageResource(R.drawable.dicethree);
            break;
        case 2:
            i.setImageResource(R.drawable.dicetwo);
            break;
        case 4:
            i.setImageResource(R.drawable.dicefour);
            break;
        case 6:
            i.setImageResource(R.drawable.dicesix);
            break;
        default:
            i.setImageResource(R.drawable.error);
            break;
        }

        text = (EditText) findViewById(R.id.editText1);

        text2 =(EditText) findViewById(R.id.editText2);

        text3 = (EditText) findViewById(R.id.editText3);  

        btutorial1 = (Button) findViewById(R.id.button1);

        btutorial1.setOnClickListener((OnClickListener) this);

        Button buttonGenerate = (Button) findViewById(R.id.button1);

        enternumberofdice = (EditText) findViewById(R.id.enternumberofdice);

        Button buttonGenerate2 = (Button) findViewById(R.id.battlecalculate);

        buttonGenerate2.setOnClickListener(new OnClickListener()    
        {

            @Override
            public void onClick(View v) 
            {
                    setContentView(R.layout.main2);
            }

        });

        buttonGenerate.setOnClickListener(new OnClickListener()     
        {
            @Override
            public void onClick(View v) 
            {
                // TODO Auto-generated method stub
                go();

                roll();
            }

        });
    }

    public void onClick(View view) 
    {
        switch (view.getId()) 
        {
            case R.id.button1:

                if (number1 > number2) 
                {
                    text3.setText("Three and above");       
                    return;
                }

                else if (number1 < number2) 
                {
                    text3.setText("Five and above");        
                    return;
                }

                else if (number1 == number2) 
                {
                    text3.setText("Four and above");        
                    return;
                }

                else
                {
                    text3.setText("Not Working");       
                    return;
                }

        }
    }
}

PS How do you add xml code to your post. When I add xml code to my post, it doesn't appear in the preview page.

Here is my stack trace.

DalvikVM[localhost:8695]
Thread [<1> main] (Suspended (exception RuntimeException))
ActivityThread.performLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2585
ActivityThread.handleLaunchActivity(ActivityThread$ActivityRecord, Intent) line: 2679
ActivityThread.access$2300(ActivityThread, ActivityThread$ActivityRecord, Intent) line: 125 ActivityThread$H.handleMessage(Message) line: 2033
ActivityThread$H(Handler).dispatchMessage(Message) line: 99 Looper.loop() line: 123 ActivityThread.main(String[]) line: 4627
Method.invokeNative(Object, Object[], Class, Class[], Class, int, boolean) line: not available [native method]
Method.invoke(Object, Object...) line: 521
ZygoteInit$MethodAndArgsCaller.run() line: 868
ZygoteInit.main(String[]) line: 626 NativeStart.main(String[]) line: not available [native method]
Thread [<6> Binder Thread #2] (Running) Thread [<5> Binder Thread #1] (Running)

Answer 1

The class-level variable initialization you do, eg textGenerateNumber , must be done after the call to to setContentView in the onCreate method.

Update: restructuring the code you should have something like this. Though, the number1 and number2 assignments doesn't make sense since you haven't initialized the text and text2 variables.

....

EditText enternumberofdice;
TextView textGenerateNumber;
private EditText text, text2, text3;
private Button btutorial1;
int number1;
int number2;
ImageView i;
private int myFaceValue;
int myNum;


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

    textGenerateNumber = (TextView) findViewById(R.id.text4);

    //BUG: will fail since text/text2 isn't initialized
    //number1 = Integer.parseInt(text.getText().toString());
    //number2 = Integer.parseInt(text2.getText().toString());

    i = new ImageView(this);
    i.setAdjustViewBounds(true);
}

Answer 2

final TextView textGenerateNumber = (TextView) findViewById(R.id.text4);

is run before the onCreate method so your views don't exist yet. Add all code to retrieve views after your call to setContentView() .