How to Change the Date Format in Material Range Date Picker for Android Development

Learn how to easily change the date format in Material Range Date Picker from `dd/mm/yyyy` to `mm/dd/yyyy` and store start and end dates in separate variables in your Android app.
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This video is based on the question https://stackoverflow.com/q/76850699/ asked by the user 'Vikas Kumar' ( https://stackoverflow.com/u/22349982/ ) and on the answer https://stackoverflow.com/a/76850935/ provided by the user 'viethoang' ( https://stackoverflow.com/u/12523577/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Changing Date Format in Material Range Date Picker

When building Android applications, developers often need to collect user input efficiently. One common requirement is to gather date ranges using a date picker widget. Recently, a developer faced a challenge: they needed to change the date format from dd/mm/yyyy to mm/dd/yyyy using the Material Range Date Picker and store the start and end dates in separate variables. If you're encountering a similar issue, don't worry! This post will walk you through a clear and concise solution to this problem.

The Problem

You want to change the date format of the selections made in the Material Range Date Picker in order to work seamlessly with your application's expected input format. Additionally, you want to ensure that these values are stored in two distinct variables: one for the start date and one for the end date.

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While attempting to retrieve the user-selected dates, you might have faced a ClassCastException error that typically indicates an issue with type expectations in your callback method.

The Solution

To resolve this and successfully format the dates, you need to make some adjustments to your date picker listener. Here are the detailed steps you should follow:

Step 1: Adjust the Listener Callback

You need to update the type in your OnPositiveButtonClickListener. Instead of expecting a Long, you should utilize a Pair<Long, Long> to represent the start and end dates.

Here's the updated method implementation:

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Step 2: Explanation of Code Changes

SimpleDateFormat

The SimpleDateFormat class allows you to format and parse dates in a locale-sensitive manner. By constructing it with the format "MM/dd/yyyy", dates will be presented in the desired order.

Pair Long, Long

The Pair<Long, Long> parameter passed represents the start and end dates of your selection. Using this structure allows you to access both dates easily without causing type-related errors.

Step 3: Displaying the Dates

You can choose to display these formatted dates in a Toast, set them to a TextView, or process them further in your application as needed.

Conclusion

Changing the date format in the Material Range Date Picker is an essential task for many Android developers. By updating your listener to correctly handle pairs of long values and formatting them through SimpleDateFormat, you can achieve the desired result without any runtime errors.

By following the outlined steps and example code, you should be able to easily implement the date format change in your application, enhancing the user experience and ensuring consistency in date handling across your app.

If you have any further questions or run into issues, feel free to reach out for assistance!

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