SignUp | Login | User's Setting by using SharedPreferences in Android

About Example:- Here is the example that "How to do SignUp | Login and Update user's Profile  in Android Application By using Coding"

Basic Requirement:-
1. MainActivity.java  | activity_main.xml
2.Login |   login.xml
3.Signup | signup.xml
4.UserProfile   |   user_profile.xml
5.UserProfileUpdate   | user_profile_update.xml
6.SharedConstant

Steps are:-
Step 1: Add a new project and open activity_main.xml and write following code:-

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
    android:orientation="vertical"
    android:gravity="center"
    android:layout_height="match_parent">

    <TextView
        android:textSize="20sp"
        android:id="@+id/uerName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_margin="30dp"
        android:text="Welcome"/>

</LinearLayout>

Steps 2: MainActivity.java

package com.example.supriyabharti.profilesettingexmp;


import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.preference.PreferenceManager;
import android.support.v7.app.AppCompatActivity;

public class MainActivity extends AppCompatActivity {

    SharedConstant sharedConstant;
    @Override   

       protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        sharedConstant=new SharedConstant(MainActivity.this);

        new Handler().postDelayed(new Runnable(){
            public void run(){
                String strUserPhone=sharedConstant.getStringPref("userPhone");
                if(strUserPhone.matches("")){
                    startActivity(new Intent(MainActivity.this,SignUp.class));
                    finish();
                }else {
                    startActivity(new Intent(MainActivity.this, UserProfile.class));
                    finish();
                }
            }

        },3000 );

    }
}

Steps 3: SharedConstant.java

package com.example.supriyabharti.profilesettingexmp;

import android.content.Context;
import android.content.SharedPreferences;
public class SharedConstant  {

    SharedPreferences preferences;
    SharedPreferences.Editor editor;
    public SharedConstant(Context context) {
        preferences=context.getSharedPreferences("MyData", Context.MODE_PRIVATE);
    }

    public  void setPrefString(String key,String value){
        editor=preferences.edit();
        editor.putString(key,value);
        editor.commit();
    }
    public  String getStringPref(String key){
        return preferences.getString(key,"");
    }
}




Steps 4:- SignUp.java

package com.example.supriyabharti.profilesettingexmp;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/** * Created by supriyabharti on 05/09/17. */
public class SignUp extends AppCompatActivity {
    TextView tvLogin;
    EditText edName,edPhone;
    Button btnSignup;
    @Override    
       Loginprotected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.signup);
        final SharedConstant pref=new SharedConstant(SignUp.this);
        tvLogin=(TextView)findViewById(R.id.login);
        edName=(EditText)findViewById(R.id.userName);
        edPhone=(EditText)findViewById(R.id.userPhone);
        btnSignup=(Button) findViewById(R.id.signUp);

        btnSignup.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                if(edName.getText().toString().isEmpty() && edPhone.getText().toString().isEmpty()){
                    Toast.makeText(getApplicationContext(),"Please enter Value",Toast.LENGTH_LONG).show();

                }else{
                    pref.setPrefString("userName",edName.getText().toString());
                    pref.setPrefString("userPhone",edPhone.getText().toString());
                    pref.setPrefString("userLocation","");
                    startActivity(new Intent(SignUp.this,UserProfile.class));
                    finish();
                }
            }
        });

        tvLogin.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                startActivity(new Intent(SignUp.this,Login.class));
                finish();
            }
        });
    }
}


Steps 5:- signup.xml









<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    

android:layout_width="match_parent"

    

android:gravity="center"

    

android:layout_height="match_parent">

    <EditText

        

android:id="@+id/userName"

       

android:layout_margin="20dp"

        

android:layout_width="match_parent"

        

android:layout_height="wrap_content"

        

android:hint="Name"/>

    <EditText

        

android:id="@+id/userPhone"

        

android:layout_margin="20dp"

        

android:layout_width="match_parent"

        

android:layout_height="wrap_content"

        

android:hint="Phone"/>

    <Button

        

android:id="@+id/signUp"

        

android:layout_width="wrap_content"

        

android:layout_height="wrap_content"

        

android:text="Signup"/>

    <TextView

        

android:id="@+id/login"

        

android:layout_width="wrap_content"

        

android:layout_height="wrap_content"

       

android:text="Login"

        

android:textSize="20sp"

        

android:layout_marginTop="20dp"/>



</LinearLayout>

Steps 6:- Login.java
package com.example.supriyabharti.profilesettingexmp;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/** * Created by supriyabharti on 05/09/17. */
public class Login extends AppCompatActivity {
    TextView tvSignup;
    EditText edPhone;
    Button btnLoginup;
    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.login);
       final SharedConstant sharedConstant=new SharedConstant(Login.this);
        tvSignup=(TextView)findViewById(R.id.userSignup);
        btnLoginup=(Button) findViewById(R.id.userLogin);
        edPhone=(EditText) findViewById(R.id.userPhone);

        btnLoginup.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                if(edPhone.getText().toString().matches("")){
                    Toast.makeText(getApplicationContext(),"Please enter value",Toast.LENGTH_LONG).show();

                }else{
                    String str=sharedConstant.getStringPref("userPhone");
                    if(str.equalsIgnoreCase(edPhone.getText().toString())){
                        startActivity(new Intent(Login.this,UserProfile.class));
                        finish();

                    }else {
                        Toast.makeText(getApplicationContext(),"Invalid Login",Toast.LENGTH_LONG).show();
                    }
                }
            }
        });
        tvSignup.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                startActivity(new Intent(Login.this,SignUp.class));
                finish();
            }
        });
    }
}

Steps 7:- login.xml









<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="match_parent"

    android:gravity="center"

    android:layout_height="match_parent">



    <EditText

        android:id="@+id/userPhone"

        android:layout_margin="20dp"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:hint="Phone"/>

    <Button

        android:id="@+id/userLogin"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Login"/>

    <TextView

        android:id="@+id/userSignup"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="SignUp"

        android:textSize="20sp"

        android:layout_marginTop="20dp"/>



</LinearLayout>

Steps 8:- UserProfile.java
package com.example.supriyabharti.profilesettingexmp;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

/** * Created by supriyabharti on 05/09/17. */
public class UserProfile extends AppCompatActivity {
    TextView logout,userName;
    Button viewProfile;
    SharedConstant sharedConstant;
    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.user_profile);
        logout=(TextView)findViewById(R.id.logout);
        userName=(TextView)findViewById(R.id.uerName);
        viewProfile=(Button) findViewById(R.id.viewProfile);
        sharedConstant=new SharedConstant(UserProfile.this);

        String s=sharedConstant.getStringPref("userName");
        userName.setText(s);
        logout.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                sharedConstant.setPrefString("userName","");
                sharedConstant.setPrefString("userPhone","");
                startActivity(new Intent(UserProfile.this,SignUp.class));
                finish();
            }
        });

        viewProfile.setOnClickListener(new View.OnClickListener() {
            @Override            public void onClick(View view) {
                startActivity(new Intent(UserProfile.this,UserProfileUpdate.class));

            }
        });
    }
}







Steps 9:-user_profile.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    
xmlns:app="http://schemas.android.com/apk/res-auto"    
xmlns:tools="http://schemas.android.com/tools"    
android:layout_width="match_parent"    
android:orientation="vertical"    
android:layout_height="match_parent">

    <TextView        
android:id="@+id/uerName"        
android:layout_width="wrap_content"        
android:layout_height="wrap_content"        
android:layout_gravity="center"        
android:layout_margin="30dp"        
android:text="Name"        
android:textSize="25sp"        
android:textStyle="bold"        
android:textColor="#000"/>
    <Button        
android:id="@+id/viewProfile"        
android:layout_width="wrap_content"        
android:layout_height="wrap_content"        
android:text="View Full Profile"        
android:layout_gravity="center"/>
    <TextView        
android:id="@+id/logout"        
android:layout_width="match_parent"        
android:gravity="center"        
android:layout_marginTop="20dp"        
android:layout_height="wrap_content"        
android:text="Logout"/>

</LinearLayout>

Steps 10:- UserProfileUpdate.java
package com.example.supriyabharti.profilesettingexmp;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/** * Created by supriyabharti on 05/09/17. */
public class UserProfileUpdate extends AppCompatActivity {
    EditText edPhone,edName,edLocation;
    Button btnEdit,btnSave;
    @Override    
protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.user_profile_update);
       final SharedConstant sharedConstant=new SharedConstant(UserProfileUpdate.this);
        btnEdit=(Button) findViewById(R.id.userLogin);
        btnSave=(Button) findViewById(R.id.userSave);
        edPhone=(EditText) findViewById(R.id.userPhone);
        btnSave.setVisibility(View.GONE);
        btnEdit.setVisibility(View.VISIBLE);



        edName=(EditText) findViewById(R.id.userName);
        edLocation=(EditText) findViewById(R.id.userLocation);

        edName.setText(sharedConstant.getStringPref("userPhone"));
        edPhone.setText(sharedConstant.getStringPref("userName"));
        edLocation.setText(sharedConstant.getStringPref("userLocation"));

        edName.setEnabled(false);
        edPhone.setEnabled(false);
        edLocation.setEnabled(false);

        btnEdit.setOnClickListener(new View.OnClickListener() {
            @Override            
public void onClick(View view) {

                edName.setEnabled(true);
                edPhone.setEnabled(true);
                edLocation.setEnabled(true);
                btnSave.setVisibility(View.VISIBLE);
                btnEdit.setVisibility(View.GONE);


            }
        });
        btnSave.setOnClickListener(new View.OnClickListener() {
            @Override            
public void onClick(View view) {
                sharedConstant.setPrefString("userName",edName.getText().toString());
                sharedConstant.setPrefString("userPhone",edPhone.getText().toString());
                sharedConstant.setPrefString("userLocation",edLocation.getText().toString());
                edName.setEnabled(false);
                edPhone.setEnabled(false);
                edLocation.setEnabled(false);
                btnSave.setVisibility(View.GONE);
                btnEdit.setVisibility(View.VISIBLE);
            }
        });

    }
}



Steps 11:- user_profile_update.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
  android:orientation="vertical"   
 android:layout_width="match_parent"   
 android:layout_height="match_parent">
    <TextView        
android:layout_width="match_parent"       
 android:gravity="center"        
android:layout_marginTop="20dp"        
android:textStyle="bold"        
android:textColor="#000"       
 android:textSize="25sp"       
 android:layout_height="wrap_content"       
 android:text="User Name"/>

    <EditText        
android:id="@+id/userName"        
android:layout_margin="10dp"        
android:layout_width="match_parent"        
android:layout_height="wrap_content"        
android:hint="Name"/>
    <EditText        
android:id="@+id/userPhone"        
android:layout_margin="10dp"        
android:layout_width="match_parent"        
android:layout_height="wrap_content"        
android:hint="Phone"/>
    <EditText        
android:id="@+id/userLocation"        
android:layout_margin="10dp"        
android:layout_width="match_parent"        
android:layout_height="wrap_content"        
android:hint="Location"/>
    <Button        
android:id="@+id/userLogin"        
android:layout_gravity="center"        
android:layout_width="wrap_content"        
android:layout_height="wrap_content"        
android:text="Edit"        
android:visibility="gone"/>
    <Button        
android:id="@+id/userSave"        
android:layout_gravity="center"        
android:layout_width="wrap_content"        
android:layout_height="wrap_content"        
android:text="save"        
android:visibility="gone"/>

</LinearLayout>



OUTPUT:-