In Java:
Call the setAutoSizeTextTypeUniformWithPresetSizes()
method:
setAutoSizeTextTypeUniformWithPresetSizes(int[] presetSizes, int unit)
In XML:
Use the autoSizePresetSizes
attribute in the layout XML file:
<TextView android:id=”@+id/autosizing_textview_presetsize”
android:layout_width=”wrap_content”
android:layout_height=”250dp”
android:layout_marginLeft=”0dp”
android:layout_marginTop=”0dp”
android:autoSizeText=”uniform”
android:autoSizePresetSizes=”@array/autosize_text_sizes”
android:text=”Hello World!”
android:textSize=”100sp”
app:layout_constraintLeft_toLeftOf=”parent”
app:layout_constraintTop_toTopOf=”parent” />
To access the array as a resource, define the array in the res/values/arrays.xml file:
<array name=”autosize_text_sizes”>
<item>10sp</item>
<item>12sp</item>
<item>20sp</item>
<item>40sp</item>
<item>100sp</item>
</array>
Check out the AutosizingTextViews-Demo at GitHub for more details.