Styjun

How do rulers get rich from war?

Should I inform my future product owner that there is a good chance that a team member will leave the company soon?

Is it safe to unplug a blinking USB drive after 'safely' ejecting it?

Why would a fighter use the afterburner and air brakes at the same time?

Minimize taxes now that I earn more

What's the word for a student who doesn't register but goes to a class anyway?

Which museums have artworks of all four ninja turtles' namesakes?

Delete empty subfolders, keep parent folder

Is a global DNS record a security risk for phpMyAdmin?

Decimal “XOR” operator

Database Table/Column rules

Why do we need to use transistors when building an OR gate?

Quick Kurodoko Puzzle: Threes and Triples

Probability of rolling a specific combination of results with nd6

Algorithm for competing cells of 0s and 1s

Is there a connection between IT and Ghostbusters?

Neural net with scalar Boolean output for binary classification

Were the Apollo mission ascent stages left in graveyard orbits?

What is the word for a person who destroys monuments?

Applications of mathematics in clinical setting

What are the end bytes of *.docx file format

As an employer, can I compel my employees to vote?

Paradox regarding phase transitions in relativistic systems

Why did Inosuke called Tanjiro as "Kentaro"?

How to solve an unknown error: NullPointerException: Attempt to invoke virtual method…setOnClickListener? [duplicate]

Can not find a View with findViewById()Android StartActivity(Intent) -> NullPointerException (something to do with onclicklistener)Attempt to invoke virtual method Editablejava.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.Button.setOnClickListenerMediaPlayer crash. Attempt to invoke virtual methodAndriod app crash and gives the error attempt to invoke virtual method on a null object referenceFunction setOnClickListener(new View.OnClickListener()Attempt to invoke virtual method on a null object referenceAttempt to invoke virtual method 'void android.support.v7.widget.CardView.setOnClickListenerAttempt to invoke virtual method addView on null reference object even though object is referenced

.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;

-1

This question already has an answer here:

• 
  Can not find a View with findViewById()
  
  4 answers
  
  

I followed an online tutorial for creating a login/register activity using SQLite. The tutorial is only 4 months old, and I followed the tutorial exactly when I ran my app, it is not starting my Intent, and it gave me the following error:

fatal exception main: .... caused by: java.lang.NullPointerException:
Attempt to invoke virtual method 'void
android.widget.TextView.setOnClickListener(android.view.View$OnClickListener)'
on a null object reference....

It was a textView, with an onClickListener, and I've changed it to a button...

register.setOnClickListener(new View.OnClickListener()//the error is on this line
 @Override
 public void onClick(View v)
 Intent registerIntent = new Intent(Login.this, Register.class);
 startActivity(registerIntent);
 
);

java android android-intent onclicklistener

share|improve this question

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

marked as duplicate by Mike M. android
Users with the  android badge can single-handedly close android questions as duplicates and reopen them as needed.

StackExchange.ready(function()
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function()
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
function()
$hover.showInfoMessage('',
messageElement: $msg.clone().show(),
transient: false,
position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
dismissable: false,
relativeToBody: true
);
,
function()
StackExchange.helpers.removeMessages();

);
);
);
Apr 14 at 11:11

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Stack trace please?
  
  – JustAFellowCoder
  Mar 28 at 14:20
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Can you provide the code for the initialization statement of register button
  
  – Saurav Kumar
  Mar 28 at 14:20
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference at com.benvanj.android.homehr.Login.onCreate(Login.java:32)
  
  – Ben Van Jaarsveld
  Mar 28 at 14:22
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Is your line setContentView(R.layout.layoutName) before the initialization statement
  
  – Saurav Kumar
  Mar 28 at 17:03
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  BEAUTIFUL!!!! thanks Saurav!!!!!
  
  – Ben Van Jaarsveld
  Mar 28 at 19:54
  

  
  
  
  

 | 
show 4 more comments

-1

This question already has an answer here:

• 
  Can not find a View with findViewById()
  
  4 answers
  
  

I followed an online tutorial for creating a login/register activity using SQLite. The tutorial is only 4 months old, and I followed the tutorial exactly when I ran my app, it is not starting my Intent, and it gave me the following error:

fatal exception main: .... caused by: java.lang.NullPointerException:
Attempt to invoke virtual method 'void
android.widget.TextView.setOnClickListener(android.view.View$OnClickListener)'
on a null object reference....

It was a textView, with an onClickListener, and I've changed it to a button...

register.setOnClickListener(new View.OnClickListener()//the error is on this line
 @Override
 public void onClick(View v)
 Intent registerIntent = new Intent(Login.this, Register.class);
 startActivity(registerIntent);
 
);

java android android-intent onclicklistener

share|improve this question

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

marked as duplicate by Mike M. android
Users with the  android badge can single-handedly close android questions as duplicates and reopen them as needed.

StackExchange.ready(function()
if (StackExchange.options.isMobile) return;

$('.dupe-hammer-message-hover:not(.hover-bound)').each(function()
var $hover = $(this).addClass('hover-bound'),
$msg = $hover.siblings('.dupe-hammer-message');

$hover.hover(
function()
$hover.showInfoMessage('',
messageElement: $msg.clone().show(),
transient: false,
position: my: 'bottom left', at: 'top center', offsetTop: -7 ,
dismissable: false,
relativeToBody: true
);
,
function()
StackExchange.helpers.removeMessages();

);
);
);
Apr 14 at 11:11

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Stack trace please?
  
  – JustAFellowCoder
  Mar 28 at 14:20
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Can you provide the code for the initialization statement of register button
  
  – Saurav Kumar
  Mar 28 at 14:20
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.TextView.setOnClickListener(android.view.View$OnClickListener)' on a null object reference at com.benvanj.android.homehr.Login.onCreate(Login.java:32)
  
  – Ben Van Jaarsveld
  Mar 28 at 14:22
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Is your line setContentView(R.layout.layoutName) before the initialization statement
  
  – Saurav Kumar
  Mar 28 at 17:03
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  BEAUTIFUL!!!! thanks Saurav!!!!!
  
  – Ben Van Jaarsveld
  Mar 28 at 19:54
  

  
  
  
  

 | 
show 4 more comments

This question already has an answer here:

• 
  Can not find a View with findViewById()
  
  4 answers
  
  

I followed an online tutorial for creating a login/register activity using SQLite. The tutorial is only 4 months old, and I followed the tutorial exactly when I ran my app, it is not starting my Intent, and it gave me the following error:

fatal exception main: .... caused by: java.lang.NullPointerException:
Attempt to invoke virtual method 'void
android.widget.TextView.setOnClickListener(android.view.View$OnClickListener)'
on a null object reference....

It was a textView, with an onClickListener, and I've changed it to a button...

register.setOnClickListener(new View.OnClickListener()//the error is on this line
 @Override
 public void onClick(View v)
 Intent registerIntent = new Intent(Login.this, Register.class);
 startActivity(registerIntent);
 
);

java android android-intent onclicklistener

share|improve this question

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

register.setOnClickListener(new View.OnClickListener()//the error is on this line
 @Override
 public void onClick(View v)
 Intent registerIntent = new Intent(Login.this, Register.class);
 startActivity(registerIntent);
 
);

java android android-intent onclicklistener

java android android-intent onclicklistener

share|improve this question

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

share|improve this question

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

edited Mar 29 at 8:48

halfer

15.3k77 gold badges6363 silver badges129129 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

asked Mar 28 at 14:16

Ben Van JaarsveldBen Van Jaarsveld

1866 bronze badges

1 Answer
1

active

oldest

votes

0

you must use initialization before this code

intializ example :

Button register= (Button) findViewById(R.id.button);

share|improve this answer

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Button register; register = (Button) findViewById(R.id.register);.... yip was there...
  
  – Ben Van Jaarsveld
  Mar 28 at 14:30
  
  

  
  
  
  

add a comment
 | 

0

you must use initialization before this code

intializ example :

Button register= (Button) findViewById(R.id.button);

share|improve this answer

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Button register; register = (Button) findViewById(R.id.register);.... yip was there...
  
  – Ben Van Jaarsveld
  Mar 28 at 14:30
  
  

  
  
  
  

add a comment
 | 

0

you must use initialization before this code

intializ example :

Button register= (Button) findViewById(R.id.button);

share|improve this answer

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Button register; register = (Button) findViewById(R.id.register);.... yip was there...
  
  – Ben Van Jaarsveld
  Mar 28 at 14:30
  
  

  
  
  
  

add a comment
 | 

you must use initialization before this code

intializ example :

Button register= (Button) findViewById(R.id.button);

share|improve this answer

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges

share|improve this answer

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges

answered Mar 28 at 14:26

Mersad NilchyMersad Nilchy

5188 bronze badges