Android sharedpreferences Example

1/  Create A New Project  And set Button in XML

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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:id="@+id/main"
    android:layout_width="match_parent"
    android:gravity="center"
    android:layout_height="match_parent"
    tools:context=".MainActivity">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:orientation="vertical">
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Shared Preferences Example"
            android:textSize="25dp"
            android:layout_marginBottom="20dp"
            android:textColor="@color/black"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <Button
            android:id="@+id/setBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Set Data"
            tools:ignore="MissingConstraints" />

        <Button
            android:id="@+id/getBtn"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Get Data"
            tools:ignore="MissingConstraints" />
    </LinearLayout>

</RelativeLayout>


 

1/  Set Sharedpreferences in  MainActivity.java

package com.example.sharedpreferences;

import android.annotation.SuppressLint;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

import androidx.activity.EdgeToEdge;
import androidx.appcompat.app.AppCompatActivity;
import androidx.core.graphics.Insets;
import androidx.core.view.ViewCompat;
import androidx.core.view.WindowInsetsCompat;

public class MainActivity extends AppCompatActivity {

    SharedPreferences sharedPreferences;

    SharedPreferences.Editor myEdit;

    Button setBtn,getBtn;
    @SuppressLint("MissingInflatedId")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        EdgeToEdge.enable(this);
        setContentView(R.layout.activity_main);

        sharedPreferences = getSharedPreferences("MySharedPref",MODE_PRIVATE);
        myEdit = sharedPreferences.edit();

        setBtn=findViewById(R.id.setBtn);
        getBtn=findViewById(R.id.getBtn);

        setBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                myEdit.putString("product", "Banana");
                myEdit.putInt("price", 10);
                myEdit.commit();
                Toast.makeText(MainActivity.this, "Shared Preferences Set", Toast.LENGTH_SHORT).show();
            }
        });


        getBtn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String name = sharedPreferences.getString("product", "");
                int age = sharedPreferences.getInt("price", 0);


                Toast.makeText(MainActivity.this, name+"", Toast.LENGTH_SHORT).show();
            }
        });

    }
}