Resolving Application Errors Caused by Second Tap on EditText Field in Android

Описание: Discover why your Android app crashes when tapping the EditText twice and how to fix it. Learn about `ResourceNotFoundException` and theme inconsistencies in your Android application.
---
This video is based on the question https://stackoverflow.com/q/76084944/ asked by the user 'Stanislaw' ( https://stackoverflow.com/u/21713685/ ) and on the answer https://stackoverflow.com/a/76085597/ provided by the user 'Marcin Orlowski' ( https://stackoverflow.com/u/1235698/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Why second tap on edittext field causes application error?

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Understanding the Application Error on Second Tap of EditText Field

As an Android developer, encountering an application error can be frustrating, especially when it's triggered by a seemingly innocuous action like tapping an EditText field multiple times. A recent query highlighted this issue perfectly: tapping the EditText works fine when it's empty, but causes a runtime error once a character is entered. In this guide, we will explore the cause behind this error and provide a solution to rectify it.

The Problem

The user reported an error while working with an EditText component that accepts a phone number. Here’s a brief summary of their experience:

What Happened?: The application allowed tapping on an empty EditText field multiple times. However, once a character was entered and the keyboard was closed, tapping the field again caused the app to crash.

The Error: The log messages revealed that there was a Resources$NotFoundException, indicating that something needed by the EditText was missing or incorrectly referenced in the application resources.

The Cause of the Error

After examining the provided code and error log, it becomes clear that the root cause of the crash is related to the dynamic theming set by the FontSettings.setDynamicTheme() method. Here's what happens in detail:

Dynamic Theme Application: This method tries to set a theme that may reference various styles and resources including drawables and fonts. If any of these resources are missing or incorrectly configured, it leads to an invalid state for the EditText.

Why It Works with Empty EditText: When there is no content in the EditText, many of the widgets associated with it do not need to render, thus avoiding potential problems related to missing resources. However, once the EditText has content, it tries to render all its components, triggering the crash due to the missing resources.

Proposed Solution

To remedy this app-crashing bug, follow these steps:

1. Verify Resource Availability

Begin by verifying whether all resources (like drawables or fonts) referenced in your styles are correctly available in your project.

2. Check FontSettings Updates

Since FontSettings appears to be an external library, ensure that you have the latest version. Libraries frequently receive updates that fix issues related to theme applications.

3. Inspect and Modify Styles

If the issue persists after verifying the resources and updating FontSettings, inspect the specific styles involved in theming your application. Look for any references that may be pointing to non-existent drawable or font resources.

4. Add Exception Handling

As a good practice, you can add exception handling in your code to gracefully manage unexpected errors. This can sometimes offer a workaround while debugging the root cause.

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

In conclusion, resolving the app crashing issue when tapping an EditText field a second time requires careful debugging and adjustments around dynamic theming. Always ensure that your resources are correctly configured and up to date. Monitoring your application's resource handling can save you from frustrating runtime errors in the future. By following the outlined steps, you should restore smooth functionality to your EditText interactions.

Now that you have the knowledge to tackle this issue, feel free to delve deeper into resource management and error handling to ensure a seamless user experience in your applications!