Read raw text file, and display in ScrollView.

This article demonstrate how to read raw text file from /res/raw/ folder, and display the text in a TextView inside ScrollView.

Create raw text file at /res/raw/mytext.txt.

Santa Claus Is Coming To Town:

You better watch out
You better not cry
Better not pout
I'm telling you why
Santa Claus is coming to town

He's making a list,
And checking it twice;
Gonna find out Who's naughty and nice.
Santa Claus is coming to town

He sees you when you're sleeping
He knows when you're awake
He knows if you've been bad or good
So be good for goodness sake!

O! You better watch out!
You better not cry.
Better not pout, I'm telling you why.
Santa Claus is coming to town.
Santa Claus is coming to town.

Add a ScrollView with TextView inside, to our layout.

<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=".MainActivity" 
    android:orientation="vertical">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/hello_world" />

    <ScrollView 
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/mytextview"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"/>
    </ScrollView>
    
</LinearLayout>

Main code:

package com.AndroidTextResource;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;

import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;

public class MainActivity extends Activity {

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  
  TextView myTextView = (TextView)findViewById(R.id.mytextview);
  
  InputStream inputStream = getResources().openRawResource(R.raw.mytext);
  ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
  
  String myText = "";
  int in;
  try {
   in = inputStream.read();
   while (in != -1)
   {
    byteArrayOutputStream.write(in);
    in = inputStream.read(); 
   }
   inputStream.close();
   
   myText = byteArrayOutputStream.toString(); 
  }catch (IOException e) {
   e.printStackTrace(); 
  }

  myTextView.setText(myText); 
 }
 
}