OnClickListener in Android Studio

Question

I m attempting to develop and app using the new Android Studio  but I keep receiving major errors on my OnClickListeners  Mainly it is telling me that it cannot resolve symbol  setOnClickListener  and it also cannot resolve  View v   package com sigmachi derbydays   import android app Activity  import android content Intent  import android os Bundle  import android view Menu  import android view View  import android view View OnClickListener  import android widget Button   public class MainActivity extends Activity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main                Override     public boolean onCreateOptionsMenu Menu menu               Inflate the menu  this adds items to the action bar if it is present          getMenuInflater   inflate R menu main  menu           return true             Button button   Button  findViewById R id standingsButton       button setOnClickListener new View OnClickListener             public void onClick View v                startActivity new Intent MainActivity this StandingsActivity class                        That is the code in the class  Information Compilation completed with 11 errors and 0 warnings in 4 sec Information 11 errors Information 0 warnings  Users angelo AndroidStudioProjects SigmaChiDerbyDaysProject SigmaChiDerbyDays src main java com sigmachi derbydays MainActivity java     Error Error line  28 Gradle   lt identifier gt  expected     Error Error line  28 Gradle  illegal start of type     Error Error line  28 Gradle      expected     Error Error line  28 Gradle      expected     Error Error line  28 Gradle  invalid method declaration  return type required     Error Error line  30 Gradle  illegal start of type     Error Error line  30 Gradle      expected     Error Error line  30 Gradle      expected     Error Error line  30 Gradle  not a statement     Error Error line  30 Gradle      expected     Error Error line  33 Gradle  illegal start of type   Those are the errors I am receiving which makes absolutely no sense  Line 28 starts at when I do button setOnClickListener  EDIT  Now I receive a force close when I press the button  This is the class it should open  a bare class with the only change being the layout to open  package com sigmachi derbydays   import android os Bundle  import android app Activity  import android view Menu   public class StandingsActivity extends Activity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout standings layout                Override     public boolean onCreateOptionsMenu Menu menu               Inflate the menu  this adds items to the action bar if it is present          getMenuInflater   inflate R menu main  menu           return true

User · Accepted Answer

Button button   Button  findViewById R id standingsButton   button setOnClickListener new View OnClickListener         public void onClick View v            startActivity new Intent MainActivity this StandingsActivity class                This code is not in any method  If you want to use it  it must be within a method like OnCreate    protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity main        Button button   Button  findViewById R id standingsButton       button setOnClickListener new View OnClickListener             public void onClick View v                startActivity new Intent MainActivity this StandingsActivity class

User · Answer

Override     public boolean onCreateOptionsMenu Menu menu               Inflate the menu  this adds items to the action bar if it is present          getMenuInflater   inflate R menu main  menu           return true           Override     public boolean onOptionsItemSelected MenuItem item             int id   item getItemId             if  id    R id standingsButton                startActivity new Intent MainActivity this StandingsActivity class                return true                    return super onOptionsItemSelected item

User · Answer

you will need to button initilzation inside method instead of trying to initlzing View s at class level do it as    Button button      lt  lt  declare here        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main           button   Button  findViewById R id standingsButton      lt  lt  initialize here             set OnClickListener for Button here         button setOnClickListener new View OnClickListener             public void onClick View v                startActivity new Intent MainActivity this StandingsActivity class

User · Answer

This worked for me   protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity newarea        btnSave    Button findViewById R id btnSave        OnClickListener btnListener   new OnClickListener              Override         public void onClick android view View view                finish                         btnSave setOnClickListener btnListener

User · Answer

protected void onCreate Bundle savedInstanceState       super onCreate savedInstanceState        setContentView R layout activity my       titolorecuperato    TextView  findViewById R id textView       String stitolo   titolorecuperato getText   toString         Button btnHome    Button  findViewById R id button        btnHome setOnClickListener new View OnClickListener              Override         public void onClick View view                    same thing as Nic007 said before    You do need to write code inside  onCreate  method  Sorry me too for the  indent     first comment here

[java] OnClickListener in Android Studio

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