material-components / material-components/material-components-android

[ProgressIndicator] Indeterminate linear progress indicator doesn't look indeterminate when animations are disabled

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bug Widget: ProgressIndicator
Dominant language
Java
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Description

**How to reproduce:**
- Open Developer options and set "Animator duration scale" to "Animation off"
- Open ProgressIndicatorMainDemoFragment and uncheck "Determinate mode"

You can see that the linear indicator looks more like a determinate indicator at 0% than an indeterminate indicator:

**Material Library version:** 1.13.0-alpha13

Contributor guide

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First steps

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  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the issue in ProgressIndicatorMainDemoFragment with Animator duration scale set to Animation off and Determinate mode unchecked. Trace the linear indeterminate indicator implementation and its disabled-animation path; it is done when the indicator still visibly communicates indeterminate progress without animations, with regression coverage if an existing test entry point is found.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, java
Domain
mobile, mobile-dev
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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