Passing Data between Activities using Intent Example

Screenshots :

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:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="com.chantisandroid.exampleapp.MainActivity">

    <EditText

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:id="@+id/editText"

        android:layout_alignParentTop="true"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="46dp"

        android:layout_marginLeft="5dp"

        android:layout_marginRight="5dp" />

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="send"

        android:id="@+id/button"

        android:layout_marginTop="58dp"

        android:layout_below="@+id/editText"

        android:layout_centerHorizontal="true" />

</RelativeLayout>

activity_second.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:layout_width="match_parent"

    android:layout_height="match_parent"

    tools:context="com.chantisandroid.exampleapp.SecondActivity">

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:textAppearance="?android:attr/textAppearanceLarge"

        android:id="@+id/textView"

        android:layout_centerVertical="true"

        android:layout_centerHorizontal="true" />

</RelativeLayout>

MainActivity.java :

package com.chantisandroid.exampleapp;

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;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {

    Button button;

    EditText editText;

    String string;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        editText = (EditText)findViewById(R.id.editText);

        button = (Button)findViewById(R.id.button);

        button.setOnClickListener(this);

    }

    @Override

    public void onClick(View view) {

        string = editText.getText().toString().trim();

        Intent in = new Intent(this, SecondActivity.class);

        in.putExtra("name", string);

        startActivity(in);

     }

}

SecondActivity.java :

package com.chantisandroid.exampleapp;

import android.content.Intent;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.widget.TextView;

public class SecondActivity extends AppCompatActivity {

    TextView textView;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_second);

        textView = (TextView)findViewById(R.id.textView);

        Intent in = getIntent();

        String myname = in.getStringExtra("name");

        textView.setText(myname);

    }

}

AndroidManifest.xml :

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

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

    package="com.chantisandroid.exampleapp">

    <application

        android:allowBackup="true"

        android:icon="@mipmap/ic_launcher"

        android:label="@string/app_name"

        android:supportsRtl="true"

        android:theme="@style/AppTheme">

        <activity android:name=".MainActivity">

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

        <activity android:name=".SecondActivity"></activity>

    </application>

</manifest>