getting java.lang.runtimeexception java.lang.runtimeexception

Question

I am getting java.lang.runtimeexception and java.lang.nullpointexception .Please help me with this piece of code.

package co.sds.iitr.bullsandcows;

import android.app.Activity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity implements OnClickListener {

TextView P1Num;
EditText np1;
Button btok;
String n;
int Num;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    P1Num = (TextView) findViewById(R.id.tvNum1);
    np1 = (EditText) findViewById(R.id.etNum);
    btok = (Button) findViewById(R.id.btNext);


    btok.setOnClickListener(this);

}

@Override
public void onClick(View v) 
{
    // TODO Auto-generated method stub
    n = np1.getText().toString();
    Num = Integer.valueOf(n);


    Intent in = new Intent("co.sds.iitr.GUESSACTIVITY");
    in.putExtra("Num", Num);
    startActivity(in);

}

Log cat for this code http://imgur.com/CgMrFdC&JmHj5fk&iervlj8

Attaching your logcat as text inside your question will make it easier for other users to help you. — ssantos
– ssantos, Commented Oct 12, 2013 at 8:49
On what line are you getting the error? The stack trace will tell you this. — Dawood ibn Kareem
– Dawood ibn Kareem, Commented Oct 12, 2013 at 8:52

Hariharan · Accepted Answer · 2013-10-12 08:57:56Z

1

First of all, check whether your package name is co.sds.iitr.bullsandcows or co.sds.iitr

If your package name is co.sds.iitr.bullsandcows then change the following line

Intent in = new Intent("co.sds.iitr.GUESSACTIVITY");

to

Intent in = new Intent(this,co.sds.iitr.bullsandcows.GUESSACTIVITY.class);

else,

change the following line

Intent in = new Intent("co.sds.iitr.GUESSACTIVITY");

to

Intent in = new Intent(this,co.sds.iitr.GUESSACTIVITY.class);

in your code.

And also check whether you have declared your GUESSACTIVITY in your manifest.

And finally don't hardcode your class name in intent.

edited Oct 12, 2013 at 8:57

answered Oct 12, 2013 at 8:52

Hariharan

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Comments

GrIsHu · Accepted Answer · 2013-10-12 08:46:45Z

0

You might forget to register your co.sds.iitr.GuessActivity in your manifest file and also make sure while starting activity directly explicitly specifying the name make sure for the case sensitivity of the activity name.

answered Oct 12, 2013 at 8:46

GrIsHu

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Comments

ssantos · Accepted Answer · 2013-10-12 08:52:07Z

0

The problem seems to be inside GuessActivity code, which you need to post in your question. Anyway, you should consider starting a new intent like this.-

Intent in = new Intent(this, GuessActivity.class);

Hardcoding strings is always a source of errors.

answered Oct 12, 2013 at 8:52

ssantos

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