android - How to set TextView line spacing

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/rl"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:padding="16dp"     tools:context=".MainActivity"     android:background="#b0bfc7"     >     <TextView         android:id="@+id/tv"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Line One\nLine Two\nLine spacing default"         android:background="#fdfbd0"         android:textSize="18dp"         android:layout_margin="10dp"         android:padding="10dp"         />     <!--         android:lineSpacingExtra             Extra spacing between lines of text.              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).              This may also be a reference to a resource (in the form "@[package:]type:name") or             theme attribute (in the form "?[package:][type:]name") containing a value of this type.              This corresponds to the global attribute resource symbol lineSpacingExtra.     -->     <TextView         android:id="@+id/tv_second"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Line One\nLine Two\nLineSpacingExtra = 10dp"         android:background="#eaa3a3"         android:textSize="18dp"         android:layout_margin="10dp"         android:padding="10dp"         android:layout_toRightOf="@id/tv"         android:layout_toEndOf="@id/tv"         android:lineSpacingExtra="10dp"         />     <!--         android:lineSpacingMultiplier             Extra spacing between lines of text, as a multiplier.              Must be a floating point value, such as "1.2".              This may also be a reference to a resource (in the form "@[package:]type:name") or             theme attribute (in the form "?[package:][type:]name") containing a value of this type.              This corresponds to the global attribute resource symbol lineSpacingMultiplier.     -->     <TextView         android:id="@+id/tv_third"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Line One\nLine Two\nLineSpacingMultiplier = 2"         android:background="#a3eabb"         android:textSize="18dp"         android:layout_below="@id/tv_second"         android:layout_margin="10dp"         android:padding="10dp"         android:lineSpacingMultiplier="2"         />     <TextView         android:id="@+id/tv_fourth"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Line One\nLine Two\nChange the line spacing"         android:background="#ef85e4"         android:textSize="18dp"         android:layout_below="@id/tv_second"         android:layout_toRightOf="@id/tv_third"         android:layout_toEndOf="@id/tv_third"         android:layout_margin="10dp"         android:padding="10dp"         />     <Button         android:id="@+id/btn"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:text="Change Fourth TextView Line Spacing"         android:layout_alignParentEnd="true"         android:layout_alignParentRight="true"         android:layout_alignParentBottom="true"         /> </RelativeLayout> 

MainActivity.java

 package com.cfsuman.me.androidcodesnippets;  import android.app.Activity; import android.content.Context; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.RelativeLayout; import android.widget.TextView;   public class MainActivity extends AppCompatActivity {      private Context mContext;     private Activity mActivity;      private RelativeLayout mRelativeLayout;     private TextView mTextViewSecond;     private TextView mTextViewThird;     private TextView mTextViewFourth;     private Button mButton;       @Override     protected void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.activity_main);          // Get the application context         mContext = getApplicationContext();          // Get the activity         mActivity = MainActivity.this;          // Get the widgets reference from XML layout         mRelativeLayout = (RelativeLayout) findViewById(R.id.rl);         mTextViewSecond = (TextView) findViewById(R.id.tv_second);         mTextViewThird = (TextView) findViewById(R.id.tv_third);         mTextViewFourth = (TextView) findViewById(R.id.tv_fourth);         mButton = (Button) findViewById(R.id.btn);          // Set a click listener for button         mButton.setOnClickListener(new View.OnClickListener() {             @Override             public void onClick(View view) {                 /*                     public void setLineSpacing (float add, float mult)                         Sets line spacing for this TextView. Each line will have its height                         multiplied by mult and have add added to it.                      Parameters                         add : float                         mult : float                 */                  // Programmatically set the line spacing of fourth TextView                 mTextViewFourth.setLineSpacing(0,1.5f);             }         });     } }