CODEWITHSUNDEEP
android
user3205928
user3205928

Reputation: 3

Error:unfortunately app stopped

Hi I am beginner in the android I am doing small tasks like creating activities,buttons,check box etc.The code will work fine and I will get desired output.If i try to add new which may contain error I will get unfortunately app stopped then again if i undo all the changes what I did and run the code again will get same error.

what is the problem and what I have to do? This is the code after undoing changes is there any problem?This is the main activity.Please any one help me.

CheckBox rememberMe = (CheckBox)findViewById(R.id.checkBox1);



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

         button1 = (Button) findViewById(R.id.button1);
          button1.setOnClickListener(new OnClickListener() {

                public void onClick(View v) {
                    EditText text= (EditText) findViewById (R.id.editText1);
                    EditText text1= (EditText) findViewById (R.id.editText2);
                    SharedPreferences sp=getSharedPreferences(MY_FILE,Context.MODE_PRIVATE);
                    String textview1= text.getText().toString();
                    String password1= text1.getText().toString();

                    String oldname=sp.getString("name",name);
                    String oldpassword=sp.getString("password","");
                    if(!textview1.equals(null) && !password1.equals(null))
                    {

                        if(textview1.equals(oldname)&& password1.equals(oldpassword))

                        {

                            Intent i=new Intent(MainActivity.this,MenuScreen.class);
                         startActivity(i);

                        }



                    else{
                    AlertDialog alertDialog = new AlertDialog.Builder(MainActivity.this).create();
                    alertDialog.setTitle("error msg");
                    alertDialog.setMessage("You should register before");
                    alertDialog.show();
                    }

                    }

                }   


            });    
          button2= (Button)findViewById (R.id.button2);
          button2.setOnClickListener(new OnClickListener(){
              public void onClick(View v){
                  Intent j=new Intent(MainActivity.this,Registration.class);
                  startActivity(j);
                  }
          });

    }



    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }

}

Upvotes: 0

Views: 99

Answers (3)

user543
user543

Reputation: 3633

After calling setContentView() only your layout will be loaded.So put below code

CheckBox rememberMe = (CheckBox)findViewById(R.id.checkBox1);

in onCreate() after setContentView().

Upvotes: 0

kalyan pvs
kalyan pvs

Reputation: 14590

This Line Causes you error..

CheckBox rememberMe = (CheckBox)findViewById(R.id.checkBox1);

The above line not out side the onCreate() method..place it inside onCreate() because after setContentView() only you will get the View Object.

Upvotes: 2

PrvN
PrvN

Reputation: 2395

CheckBox rememberMe = (CheckBox)findViewById(R.id.checkBox1);

put into onCreate()

Upvotes: 1

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