[ProgressIndicator] Problems with setting the style for the heirs of the class.

[Ramozjikevic]

Description: Problems with setting the style for the heirs of the class BaseProgressIndicator. Occurs for both CircularProgressIndicator and LinearProgressIndicator. If you create a class that inherits the LinearProgressIndicator or CircularProgressIndicator class, then when creating it programmatically or without specifying a style in the layout, the linearProgressIndicatorStyle style is always applied

Expected behavior: Apply style from the constructor of the created class inherited from LinearProgressIndicator or CircularProgressIndicator. As it is for example in MaterialButton and others.

Source code: The example code created to display the problem

attrs.xml

    <attr name="linearProgressIndicatorSmallStyle" format="reference" />
    <attr name="linearProgressIndicatorMediumStyle" format="reference" />
    <attr name="linearProgressIndicatorLargeStyle" format="reference" />

styles.xml

   <style name="Progress.Linear.Large" parent="Widget.Material3.LinearProgressIndicator">
        <item name="trackColor">#FEC700</item>
        <item name="trackThickness">36dp</item>
    </style>

    <style name="Progress.Linear.Medium" parent="Widget.Material3.LinearProgressIndicator">
        <item name="trackColor">#B1A6FF</item>
        <item name="trackThickness">24dp</item>
    </style>

    <style name="Progress.Linear.Small" parent="Widget.Material3.LinearProgressIndicator">
        <item name="trackColor">#FF506F</item>
        <item name="trackThickness">12dp</item>
    </style>

themes.xml

  <item name="linearProgressIndicatorStyle">@style/Progress.Linear.Medium</item>
  <item name="linearProgressIndicatorSmallStyle">@style/Progress.Linear.Small</item>
  <item name="linearProgressIndicatorMediumStyle">@style/Progress.Linear.Medium</item>
  <item name="linearProgressIndicatorLargeStyle">@style/Progress.Linear.Large</item>

classes

class LargeProgressIndicator @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = R.attr.linearProgressIndicatorLargeStyle
) : LinearProgressIndicator(context, attrs, defStyleAttr)

class MediumProgressIndicator @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = R.attr.linearProgressIndicatorMediumStyle
) : LinearProgressIndicator(context, attrs, defStyleAttr)

class SmallProgressIndicator @JvmOverloads constructor(
    context: Context,
    attrs: AttributeSet? = null,
    defStyleAttr: Int = R.attr.linearProgressIndicatorSmallStyle
) : LinearProgressIndicator(context, attrs, defStyleAttr)

layout snippet

<?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:orientation="vertical"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <TextView
        android:text="Current behavior"
        android:paddingTop="32dp"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <LargeProgressIndicator
        android:layout_margin="16dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <MediumProgressIndicator
        android:layout_margin="16dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <SmallProgressIndicator
        android:layout_margin="16dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <TextView
        android:text="Expected behavior"
        android:paddingTop="32dp"
        android:gravity="center"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"/>

    <LargeProgressIndicator
        style="?linearProgressIndicatorLargeStyle"
        android:layout_margin="16dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <MediumProgressIndicator
        style="?linearProgressIndicatorMediumStyle"
        android:layout_margin="16dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <SmallProgressIndicator
        style="?linearProgressIndicatorSmallStyle"
        android:layout_margin="16dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

Result

It also doesn't work if, create from Code

 SmallProgressIndicator(context)
 SmallProgressIndicator(context, attrs)
 SmallProgressIndicator(context, attrs, R.attr.linearProgressIndicatorSmallStyle)
 LinearProgressIndicator(context, attrs, R.attr.linearProgressIndicatorSmallStyle)

Material Library version: Tested on 1.11.0, 1.12.0-beta01

Device: Android emulator API 29

[paulfthomas]

@pekingme assigning this to you as you're currently working on the ProgressIndicator