Button Error while transfer data from one Activity to another

[Saad Zahoor]

Question : Getting force close error when i press the sign in button .. here's the code



Class 1 : This class where i store data into strings when user enter !!

package com.example.hp.beginner;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.EditText;
import android.widget.RadioButton;
import android.widget.RadioGroup;

/**
 * Created by HP on 6/20/2017.
 */

public class Create_Account extends Activity {



    public EditText userEnteredUserName , userEnteredFirstName , userEnteredLastName , userEnteredAge , userEnteredCountryName ;
    public RadioGroup radioGroup ;
    public RadioButton maleBtnSelect , femaleBtnSelect , otherGenderBtnSelect ;
    public Button goToCreate_Account_2 ;

    public String saveUserName , saveFirstName , saveLastName , saveCountryName , saveAge , saveGender = "" ;



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


    }


    public void ActionDefined() {

        LinkwithXML();
       storeDataIntoString();





        goToCreate_Account_2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent go = new Intent (Create_Account.this , Create_Account_2.class);
                startActivity(go);
            }
        });




    }




    public void storeDataIntoString () {



        saveUserName = userEnteredUserName.getText().toString() ;
        saveFirstName = userEnteredFirstName.getText().toString();
        saveLastName = userEnteredLastName.getText().toString();
        saveAge = userEnteredAge.getText().toString();
        saveCountryName = userEnteredCountryName.getText().toString();

        if (maleBtnSelect.isChecked()){

            saveGender = "Male";
        }
        else if (femaleBtnSelect.isChecked()){

            saveGender = "Female" ;
        }

        else {
            saveGender = "SheMale" ;
        }




    }


    public void LinkwithXML () {

        userEnteredUserName = (EditText) findViewById(R.id.enteredUserName);
        userEnteredFirstName = (EditText) findViewById(R.id.enteredFirstName);
        userEnteredLastName = (EditText) findViewById(R.id.enteredLastName);
        userEnteredAge= (EditText) findViewById(R.id.enteredAge);
        userEnteredCountryName = (EditText) findViewById(R.id.enteredCountry);


        radioGroup = (RadioGroup) findViewById(R.id.radioGroup);

        maleBtnSelect = (RadioButton) findViewById(R.id.maleSelected);
        femaleBtnSelect = (RadioButton) findViewById(R.id.femaleSelected);
        otherGenderBtnSelect = (RadioButton) findViewById(R.id.otherSelected);


        goToCreate_Account_2 = (Button) findViewById(R.id.nextPage);
    }



}

2.This file . After completing signing up . when user sign in i want to display all the data he/she enter

package com.example.hp.beginner;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

/**
 * Created by HP on 6/21/2017.
 */

public class Sign_in extends Activity {

    Create_Account getInfo = new Create_Account() ;

    public EditText userSignInProcessEnteredEmail , userSignInProcessEnteredPassword ;
    public Button proceed_ToSignIn_AND_DisplayId ;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sign_in);

        ButtonFunction();

    }


    public void ButtonFunction () {

        LinkwithXML();
        proceed_ToSignIn_AND_DisplayId.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {







                Intent goto_Activity_and_Display_Info_user_insert = new Intent(Sign_in.this , Display_user_info.class);
                getInfo.storeDataIntoString();
                goto_Activity_and_Display_Info_user_insert.putExtra("uname" , getInfo.saveUserName);
                goto_Activity_and_Display_Info_user_insert.putExtra("fname" , getInfo.saveFirstName);
                goto_Activity_and_Display_Info_user_insert.putExtra("lname" , getInfo.saveLastName);
                goto_Activity_and_Display_Info_user_insert.putExtra("age" , getInfo.saveAge);
                goto_Activity_and_Display_Info_user_insert.putExtra("gender" , getInfo.saveGender);
                goto_Activity_and_Display_Info_user_insert.putExtra("country" , getInfo.saveCountryName);

                startActivity(goto_Activity_and_Display_Info_user_insert);
                finish();
            }
        });

    }

    public void LinkwithXML () {

        userSignInProcessEnteredEmail = (EditText) findViewById(R.id.signInEmailEntered);
        userSignInProcessEnteredPassword = (EditText) findViewById(R.id.signInPassowrdEntered);
        proceed_ToSignIn_AND_DisplayId = (Button) findViewById(R.id.proceedToSignIn_andDisplayData);

    }
}

3.This is the last File where the data will be shown .. Got no problem in first 2 classes .. problem is in this class where i get the data from the class 2 using put extra method .

package com.example.hp.beginner;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;


public class Display_user_info extends Activity {


    public TextView displayUserName , displayFirstName , displayLastName, displayAge , displayCountry , displayGender ;
    public TextView displayEmail , displayPassword  ;


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

       // getData();

    }

    public void getData () {

        String userNameFetch = getIntent().getExtras().getString("uname");
        String firstNameFetch = getIntent().getExtras().getString("fname");
        String lastNameFetch = getIntent().getExtras().getString("lname");
        String ageFetch = getIntent().getExtras().getString("age");
        String genderFetch = getIntent().getExtras().getString("gender");
        String countryNameFetch = getIntent().getExtras().getString("country");


        displayUserName.setText(userNameFetch);
        displayFirstName.setText(firstNameFetch);
        displayLastName.setText(lastNameFetch);
        displayAge.setText(ageFetch);
        displayGender.setText(genderFetch);
        displayCountry.setText(countryNameFetch);

    }



    public void LinkwithXml () {


        displayUserName = (TextView) findViewById(R.id.userNameShow);
        displayFirstName = (TextView) findViewById(R.id.firstNameShow);
        displayLastName = (TextView) findViewById(R.id.lastNameShow);
        displayAge = (TextView) findViewById(R.id.ageShow);
        displayGender = (TextView) findViewById(R.id.genderShow);
        displayCountry = (TextView) findViewById(R.id.countryNameShow);

        displayEmail = (TextView) findViewById(R.id.emailShow);
        displayPassword = (TextView) findViewById(R.id.passShow);


    }



}

[Norm Radder]

Getting force close error

Are there any error messages in the Logcat?   Copy and paste them here.

[Tim Moores]

If an app crashes, the first step is always to look at the logcat where the full stack trace of the exception is shown. And if you then ask about a crash here, post the stack trace along with the relevant code excerpt.