AutoSizeTextView - VerstSiu/kotlin_extension GitHub Wiki

Fix layout behaviour error for single wrap constranit case, base on AppCompatTextView auto size implementation.

API List

<attr name="ktx_autoSizeinTextSize" format="dimension"/>
<attr name="ktx_autoSizeMaxTextSize" format="dimension"/>
<attr name="ktx_autoSizeStepGranularity" format="dimension"/>
<attr name="ktx_autoSizePresetSizes" format="reference"/>
<attr name="ktx_debugEnabled" format="boolean"/>

<declare-styleable name="AutoSizeTextView">
  <attr name="ktx_autoSizeMinTextSize"/>
  <attr name="ktx_autoSizeMaxTextSize"/>
  <attr name="ktx_autoSizeStepGranularity"/>
  <attr name="ktx_autoSizePresetSizes"/>
  <attr name="ktx_debugEnabled"/>
</declare-styleable>

Usage

<android.support.constraint.ConstraintLayout
  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">

  <!-- Make sure AutoSizeTextView is the only wrap constraint element -->
  <!-- at it's horizontal elements' chain -->
  <com.ijoic.ktx.widget.autosize.AutoSizeTextView
    android:layout_width="0dp"
    android:layout_height="wrap_content"
    android:ellipsize="end"
    android:maxLines="1"
    app:layout_constraintWidth_default="wrap"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintTop_toTopOf="parent"
    app:layout_constraintBottom_toBottomOf="parent"
    app:ktx_autoSizeMaxTextSize="28sp"
    app:ktx_autoSizeMinTextSize="16sp"/>

</android.support.constraint.ConstraintLayout>

Reference