How to change EditText font size in Android

activity_main.xml 
 <RelativeLayout     xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:id="@+id/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="10dp"     tools:context=".MainActivity"     android:background="#bde9cb"     >     <!--         android:textSize             Size of the text. Recommended dimension type for text             is "sp" for scaled-pixels (example: 15sp).              Must be a dimension value, which is a floating point             number appended with a unit such as "14.5sp".             Available units are: px (pixels), dp (density-independent             pixels), sp (scaled pixels based on preferred font size),             in (inches), mm (millimeters).     -->     <EditText         android:id="@+id/et"         android:layout_width="250dp"         android:layout_height="wrap_content"         android:padding="10dp"         android:text="Default font size"         />     <EditText         android:id="@+id/et2"         android:layout_width="250dp"         android:layout_height="wrap_content"         android:text="Font size 25dp"         android:padding="10dp"         android:layout_below="@+id/et"         android:textSize="25dp"         />     <EditText         android:id="@+id/et3"         android:layout_width="250dp"         android:layout_height="wrap_content"         android:padding="10dp"         android:layout_below="@+id/et2"         /> </RelativeLayout>
MainActivity.java 
 package com.cfsuman.me.androidcodesnippets;  import android.os.Bundle; import android.app.Activity; import android.util.TypedValue; import android.widget.EditText;   public class MainActivity extends Activity {      @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the widgets reference from XML layout         EditText et = (EditText) findViewById(R.id.et);         EditText et2 = (EditText) findViewById(R.id.et2);         EditText et3 = (EditText) findViewById(R.id.et3);          /*             setTextSize (int unit, float size)                 Set the default text size to a given unit and value                  Parameters                 unit : The desired dimension unit.                 size : The desired size in the given units.          */         et3.setTextSize(TypedValue.COMPLEX_UNIT_DIP,20);          // Set the default text of third EditText         et3.setText("Font size 20dp programmatically");  } }
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