Android Determine App Starts First Time OR Not Programmatically?

This example demonstrates about Android Determine App Starts First Time OR Not Programmatically.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version = "1.0" encoding = "utf-8"?>
<android.support.constraint.ConstraintLayout 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:layout_height = "match_parent"
   tools:context = ".MainActivity">
   <TextView
      android:id = "@+id/frstTime"
      android:layout_width = "match_parent"
      android:layout_height = "wrap_content"
      android:text = "Hello World!"
      android:textSize = "30sp"
      app:layout_constraintBottom_toBottomOf = "parent"
      app:layout_constraintLeft_toLeftOf = "parent"
      app:layout_constraintRight_toRightOf = "parent"
      app:layout_constraintTop_toTopOf = "parent" />
</android.support.constraint.ConstraintLayout>

In the above code, we have taken textview, when user open application, it will check whether it is the first time or not. If first time, it will append first-time text to textview or else it shows more than first-time text.

Step 3 − Add the following code to src/MainActivity.java

package com.example.andy.myapplication;
import android.content.Context;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.TextView;
public class MainActivity extends AppCompatActivity {
   SharedPreferences sharedPreferences;
   SharedPreferences.Editor sharedEditor;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      sharedPreferences = getPreferences(Context.MODE_PRIVATE);
      sharedEditor = sharedPreferences.edit();
      TextView frstTime = findViewById(R.id.frstTime);
      if (isItFirestTime()) {
         frstTime.setText("First Time");
      } else {
         frstTime.setText("Not a First Time");
      }
   }
   public boolean isItFirestTime() {
      if (sharedPreferences.getBoolean("firstTime", true)) {
         sharedEditor.putBoolean("firstTime", false);
         sharedEditor.commit();
         sharedEditor.apply();
         return true;
      } else {
         return false;
      }
   }
}

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from the android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –

When user open app first time, it will show the message, as shown above, else it will show the message as shown below-

Click here to download the project code