material-components/material-components-android

[dateRangePicker] dynamic DateValidator updates.

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#2,286 opened on Jul 5, 2021

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Good First IssueWidget: DatePickerfeature request

Description

Use case: As a user I want to be able to select data range (from-to) limited in 31 days for example. (range limit should be configurable)

  • By opening a calendar and selecting a date FROM the Calendar should disable all dates for selecting TO according to range limits.
  • By selecting TO date Calendar should become again free for ReSelecting any FROM date.
  • Future from today should be disabled in any cases.

stackoverflow

Contributor guide

Tech stack
javaandroid
Domain
mobile
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Android development basicsMaterial Components for Android
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
20
Research direction
Investigate the MaterialDatePicker implementation in the material components android library, specifically how DateValidator is attached and updated dynamically. Look at the classes `MaterialDatePicker`, `DatePicker`, and the `DateValidator` interface. The issue references a StackOverflow post (see link) that may contain insights. Attempt to modify the picker to accept a configurable range limit and re validate upon date selection.