How to Adjust Text Kerning in Android Textview

How to adjust text kerning in Android TextView?

AFAIK, you cannot adjust kerning in TextView. You may be able to adjust kerning if you draw the text on the Canvas yourself using the 2D graphics APIs.

How to change letter spacing in a Textview?

check out android:textScaleX

Depending on how much spacing you need, this might help. That's the only thing remotely related to letter-spacing in the TextView.

Edit: please see @JerabekJakub's response below for an updated, better method to do this starting with api 21 (Lollipop)

Change text kerning or spacing in TextView?

The solution I found is to mix the solutions 1 and 2 that you described. Adding spaces between letters and than changing the TextScaleX only of the spaces, so you keep other characters the same. I built a custom class that extends TextView and allows you to define the letter spacing. Everything else is automatic =)

I posted the class on this other answer

Hope that helps ^^

TextView text alignment to center

The reason why you see spacing between words is the extra line you are using for the text, which is introducing spaces between incididunt ut and labore et.

Just replace this (two lines):

android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut
            labore et dolore magna aliqua."

With this (one line):

android:text="Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."

I hope it helps!

Auto Scale TextView Text to Fit within Bounds

From June 2018 Android officially started supporting this feature for Android 4.0 (API level 14) and higher.
Check it out at: Autosizing TextViews

With Android 8.0 (API level 26) and higher:

<?xml version="1.0" encoding="utf-8"?>
<TextView
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:autoSizeTextType="uniform"
    android:autoSizeMinTextSize="12sp"
    android:autoSizeMaxTextSize="100sp"
    android:autoSizeStepGranularity="2sp" />

Programmatically:

setAutoSizeTextTypeUniformWithConfiguration(int autoSizeMinTextSize, int autoSizeMaxTextSize, 
        int autoSizeStepGranularity, int unit)

textView.setAutoSizeTextTypeUniformWithConfiguration(
                1, 17, 1, TypedValue.COMPLEX_UNIT_DIP);

Android versions prior to Android 8.0 (API level 26):

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

  <TextView
      android:layout_width="match_parent"
      android:layout_height="200dp"
      app:autoSizeTextType="uniform"
      app:autoSizeMinTextSize="12sp"
      app:autoSizeMaxTextSize="100sp"
      app:autoSizeStepGranularity="2sp" />

</LinearLayout>

Programmatically:

TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(
TextView textView, int autoSizeMinTextSize, int autoSizeMaxTextSize, int autoSizeStepGranularity, int unit) 

TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(textView, 1, 17, 1,
TypedValue.COMPLEX_UNIT_DIP);

Attention: TextView must have layout_width="match_parent" or absolute size!

How to calculate letterSpacing for TextView from sketch values?

According to Romain Guy, Android uses the "1 em = font size" definition, so you'd just do

setLetterSpacing(characterSpacing / textSize)

...just make sure those values are in the same unit (dp vs px)

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