[Autosizing TextView] #android #autosize #textview #runtime #uniformsize #granualaritysize #presetsize

arrays.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <array name="autosize_text_sizes">
    <item>12sp</item>
    <item>16sp</item>
    <item>20sp</item>
    <item>24sp</item>
    <item>28sp</item>
  </array>
</resources>

autosize_text_type.xml

<!--Uniform Scaling-->
...
<TextView
    ...
    app:autoSizeTextType="uniform"
    ...
	/>
...

<!--Granualarity-->
...
<TextView
    ...
	app:autoSizeMaxTextSize="28sp"
	app:autoSizeMinTextSize="12sp"
	app:autoSizeStepGranularity="4sp"
    ...
	/>
...
<!--Preset Size-->
...
<TextView
    ...
	app:autoSizePresetSizes="@array/autosize_text_sizes"
    ...
	/>
...

notes.txt

Starting with Android 8.0 (API level 26), you can set these new autosizing properties with the TextView class. Thanks to the Support Library 26.0, you can also use these on devices running Android 4.0 (API level 14) or later by using the TextViewCompat class.

RuntimeAutosize.kt

//Uniform Scaling
...
	TextViewCompat.setAutoSizeTextTypeWithDefaults(this,
    	          TextViewCompat.AUTO_SIZE_TEXT_TYPE_UNIFORM)
...
//Granualarity
	TextViewCompat.setAutoSizeTextTypeUniformWithConfiguration(this,
    	          12, 28, 4,
        	      TypedValue.COMPLEX_UNIT_SP)
...
//Preset Size
TextViewCompat.setAutoSizeTextTypeUniformWithPresetSizes(this,
              context.resources.getIntArray(R.array.autosize_text_sizes),
              TypedValue.COMPLEX_UNIT_SP)