Android PassData Between Activities

PassData Between Activities:

interactivity entails sharing of data between activities, whereby information is passed from one activity to the other.

This is usually accomplished by the use of Intent objects which provide facilities for data passing by key values.

This process enables you to pass information such as a string, integer or any other object between various modules within your application.

Example:

                                    
                                        // activity_pass_data_between_activities_example.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".PassDataBetweenActivitiesExample"
        android:gravity="center"
        android:orientation="vertical"
        android:background="@color/colorOrange">
   
       <FrameLayout
           android:id="@+id/pasFrame"
           android:layout_width="match_parent"
           android:layout_height="match_parent">
   
           <LinearLayout
               android:id="@+id/passlin"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:orientation="vertical"
               android:padding="16dp"
               android:layout_gravity="center"
               android:gravity="center">
   
               <TextView
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:text="Fill Below Details"
                   android:textColor="@color/colorWhite"
                   android:textSize="37dp"
                   android:gravity="center"/>
   
               <EditText
                   android:id="@+id/name"
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:hint="Enter your name"
                   android:layout_marginTop="16dp"/>
   
               <EditText
                   android:id="@+id/age"
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:layout_marginTop="16dp"
                   android:hint="Enter your age"/>
   
               <Button
                   android:id="@+id/submit1"
                   android:layout_width="wrap_content"
                   android:layout_height="wrap_content"
                   android:text="Submit"
                   android:textColor="@color/colorWhite"
                   android:layout_gravity="center"
                   android:layout_marginTop="25dp"
                   android:background="@color/colorAccent"/>
   
            </LinearLayout>
   
        </FrameLayout>
   
</LinearLayout>


// activity_two.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context=".ActivityTwo"
        android:gravity="center"
        android:padding="16dp"
        android:orientation="vertical"
        android:background="@color/colorPrimaryDark">
   
       <FrameLayout
           android:id="@+id/pasFrame"
           android:layout_width="match_parent"
           android:layout_height="match_parent">
   
           <LinearLayout
               android:id="@+id/passlin"
               android:layout_width="match_parent"
               android:layout_height="wrap_content"
               android:orientation="vertical"
               android:padding="16dp"
               android:layout_gravity="center"
               android:gravity="center">
   
               <TextView
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:text="This is the Second Activity"
                   android:textColor="@color/colorWhite"
                   android:textSize="30dp"
                   android:gravity="center"
                   android:layout_marginBottom="50dp"/>
   
               <TextView
                   android:id="@+id/text_view1"
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:text=""
                   android:textColor="@color/colorWhite"
                   android:textSize="30dp"
                   android:gravity="center"/>
   
               <TextView
                   android:id="@+id/text_view2"
                   android:layout_width="match_parent"
                   android:layout_height="wrap_content"
                   android:text=""
                   android:textColor="@color/colorWhite"
                   android:textSize="30dp"
                   android:gravity="center"/>
   
               <Button
                   android:id="@+id/back"
                   android:layout_width="wrap_content"
                   android:layout_height="wrap_content"
                   android:text="Back"
                   android:textColor="@color/colorWhite"
                   android:gravity="center"
                   android:background="@color/colorOrange"
                   android:layout_marginTop="30dp"/>
   
            </LinearLayout>
    
        </FrameLayout>
   
</LinearLayout>

                                    
                                        // PassDataBetweenActivitiesExample.java

package com.example.widgets;
    
import android.content.Intent;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;
   
public class PassDataBetweenActivitiesExample extends AppCompatActivity {
   
    EditText editText1,editText2;
    Button submit;
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_pass_data_between_activities_example);
   
        editText1=(EditText)findViewById(R.id.name);
        editText2=(EditText)findViewById(R.id.age);
        submit=(Button) findViewById(R.id.submit1);
   
        submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
   
                String nameText=editText1.getText().toString().trim();
                String ageText=editText2.getText().toString().trim();
                if (nameText.equals("") || ageText.equals("")){
                    Toast.makeText(getApplicationContext(),"Plz fill all the fields",Toast.LENGTH_SHORT).show();
                }else {
                    Intent intent=new Intent(getApplicationContext(), ActivityTwo.class);
                    intent.putExtra("name",nameText);
                    intent.putExtra("age",ageText);
                    startActivity(intent);
                }
            }
        });
   
   
    }
}
   
// ActivityTwo.java

package com.example.widgets;
    
import android.content.Intent;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
    
public class ActivityTwo extends AppCompatActivity {
   
    TextView t1,t2;
    Button b1;
    String text1,text2;
   
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_two);
   
        t1=(TextView)findViewById(R.id.text_view1);
        t2=(TextView)findViewById(R.id.text_view2);
        b1=(Button)findViewById(R.id.back);
   
        t1.setText(text1);
        t2.setText(text2);
   
        b1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
   
                Intent intent=new Intent(getApplicationContext(),PassDataBetweenActivitiesExample.class);
                startActivity(intent);
                finish();
   
            }
        });
   
   
    }
}

                                    
                                        // PassDataBetweenActivitiesExample.kt
package com.example.widgets

import android.content.Intent
import android.os.Bundle
import android.view.View
import android.widget.Button
import android.widget.EditText
import android.widget.Toast
import androidx.appcompat.app.AppCompatActivity

class PassDataBetweenActivitiesExample : AppCompatActivity() {

    private lateinit var editText1: EditText
    private lateinit var editText2: EditText
    private lateinit var submit: Button

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_pass_data_between_activities_example)

        editText1 = findViewById(R.id.name)
        editText2 = findViewById(R.id.age)
        submit = findViewById(R.id.submit1)

        submit.setOnClickListener {
            val nameText = editText1.text.toString().trim()
            val ageText = editText2.text.toString().trim()
            if (nameText.isEmpty() || ageText.isEmpty()) {
                Toast.makeText(applicationContext, "Plz fill all the fields", Toast.LENGTH_SHORT).show()
            } else {
                val intent = Intent(applicationContext, ActivityTwo::class.java)
                intent.putExtra("name", nameText)
                intent.putExtra("age", ageText)
                startActivity(intent)
            }
        }
    }
}

// ActivityTwo.kt
package com.example.widgets

import android.content.Intent
import android.os.Bundle
import android.view.View
import android.widget.Button
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity

class ActivityTwo : AppCompatActivity() {

    private lateinit var t1: TextView
    private lateinit var t2: TextView
    private lateinit var b1: Button
    private var text1: String = ""
    private var text2: String = ""

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_two)

        t1 = findViewById(R.id.text_view1)
        t2 = findViewById(R.id.text_view2)
        b1 = findViewById(R.id.back)

        t1.text = text1
        t2.text = text2

        b1.setOnClickListener {
            val intent = Intent(applicationContext, PassDataBetweenActivitiesExample::class.java)
            startActivity(intent)
            finish()
        }
    }
}

Output