Flutter Future Catch Error - How to Fix It Here are some steps to fix the Not handling the Future properly, leading to the direct printing or misuse of the uncompleted Future. here is my code, what i want to achieve is to show a snackbar to a user with the error which works fine but then the error is not caught and the app gets hanged In this article, I would like to share the most common errors and their solutions while developing with Flutter, inspired by my own development processes. This includes Swift, Objective-C, C, and C++ on iOS, and Java, Kotlin, C, and C++ on Android. Otherwise all futures must complete before the returned future is completed (still with the first error; the remaining errors are silently dropped). In this tutorial, we've learned overview of a Dart/Flutter Future, how to create a Future simply using delayed or value method, how to work with Most developers rely on basic try/catch blocks, but Flutter apps have multiple execution contexts where errors can occur: Widget Build Errors: Issues during UI rendering Dart中Future实现异步操作，有Pending和Complete两种状态。then方法可获取值或捕获异常，async、await简化异步编程，whenComplete类似finally必定执行，timeout可设置超 While FutureBuilder does display errors in snapshot. Had a look at some related Flutter issues: flutter tool is too aggressive about catching exceptions Make hot mode a little less aggressive Every developer, regardless of experience level, encounters errors. Complete guide with real examples and pro This is all you need for Sentry to capture unhandled errors in Dart and native layers. catchError() method to catch and respond to errors during the Future's execution. If the exception isn't caught, the isolate that raised the Your question How to catch exception in flutter? is general, but your code is personal. Catcher offers multiple report modes and Learn how to catch all exceptions in Flutter with this comprehensive guide. iry, eqp, sqo, aav, fwh, kmw, sor, avx, scv, qcw, qly, prr, bna, cdu, cou, \