Explicit Intent in Android Application

File Name: MainActivity.java

package com.example.abbu.explicit_intent;

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

public class MainActivity extends AppCompatActivity {

    EditText editTextfield;
    Button btnSend;

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

        // Casting
        editTextfield = (EditText) findViewById(R.id.editText_field);
        btnSend = (Button) findViewById(R.id.button_send);
        intent();
    }

    public void intent(){
        btnSend.setOnClickListener(
                new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        String value = editTextfield.getText().toString();
                        Intent i = new Intent(MainActivity.this, ReceiverActivity.class);
                        i.putExtra("message", value);
                        startActivity(i);
                    }
                }
        );
    }

}

File Name: activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="com.example.abbu.explicit_intent.MainActivity">

    <EditText
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:inputType="textPersonName"
        android:ems="10"
        android:layout_marginTop="76dp"
        android:background="#ECF0F1"
        android:id="@+id/editText_field"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true" />

    <Button
        android:text="Send"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="38dp"
        android:id="@+id/button_send"
        android:background="#95A5A6"
        android:layout_below="@+id/editText_field"
        android:layout_centerHorizontal="true" />

    <TextView
        android:text="Enter Your Name:"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/editText_field"
        android:layout_alignStart="@+id/editText_field"
        android:layout_marginBottom="29dp"
        android:id="@+id/textView" />

</RelativeLayout>

File Name: strings.xml

<resources>
    <string name="app_name">Explicit_Intent</string>
</resources>

File Name: ReceiverActivity.java

package com.example.abbu.explicit_intent;

import android.content.Intent;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Created by Abbu on 4/15/2017.
 */

public class ReceiverActivity extends MainActivity{
    TextView tv_receive;


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

        // Casting
        tv_receive = (TextView) findViewById (R.id.textViewreceive);

        Intent in = getIntent();
        String string = in.getStringExtra("message");
        tv_receive.setText(string);
    }
}



File Name: receiver_activity.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:text="Hello:"
        android:layout_marginTop="200dp"
        android:layout_marginLeft="100dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textView4" />

    <TextView
        android:layout_marginLeft="100dp"
        android:background="#ECF0F1"
        android:ems="10"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/textViewreceive" />
</LinearLayout>

Output:
activity_main.xml

After clicking on SEND button, it'll take us to receiver_activity.xml
receiver_activity.xml