Flutter performance issues.

Flutter performance issues Try to run in release mode . Flutter performance monitoring involves collecting and analyzing an app’s behavior, resource usage, and user behavior data. Cross-platform has a cost. flutter doctor. If you are facing similar issues, try these steps and I hope they help! If you are facing similar issues, try these steps and I hope they help! Apr 9, 2019 · flutter is way more faster than its current competitives like react native or ionic or whatever. Screenshots or recordings of any visible issues. Flutter GitHub: The Flutter GitHub repository. Jan 25, 2024 · However, the optimizer flagged it for causing a performance issue. 6 Found to occur in 2. I wrote a little demo to compare the performance of the two types of Sep 27, 2024 · Flutter, Google’s open-source UI software development toolkit, has gained popularity for its ability to build natively compiled applications for mobile, web, and desktop from a single codebase. Monitoring Flutter App Performance. It provides insights into various performance metrics and helps identify areas that need optimization. 10 found in release: 2. 10 Found to occur in 2. Mar 1, 2019 · For performance bottlenecks in Flutter itself, filing an issue that includes reduced test cases and a Timeline trace make it easy to identify, cross reference, and prioritize specific tasks that Mar 11, 2025 · 🚨 Common Flutter Performance Issues. Performance optimisation issues. 1 Oct 13, 2022 · c: performance Relates to speed or footprint issues (see "perf:" labels) p: maps Google Maps plugin P2 Important issues not at the top of the work list package flutter/packages repository. Make sure you are always using the most current version for the best performance. Mar 26, 2023 · Performance problems such as jerky animations and unresponsive user interfaces may result from this. Flutter pdf generation too slow with image. Viewed 231 times May 7, 2025 · This issue isn't to do with scroll performance. And this is the area where performance gets the hit by a good margin, if not managed correctly. Janky Animations: Dropped frames during transitions or scrolls. This doesn't affect the Flutter state, which lives in the FlutterEngine (unless the FlutterEngine is also released). Jul 11, 2023 · See also f: labels. Release build is much more faster than debug build. This solution helped improve the performance of my app and prevented errors related to the ListView when disabling shrinkWrap. Flutter performance issue with Lottie animation. Anybody some thoughts about the slow Nov 10, 2023 · Hey guys, so with the new Project Suggestions feature, I'm getting warnings about shrink wrap on lists not being performant. dart:ffi being 200x slower than js->canvas sounds suspicious, I'd like to investigate. Mar 11, 2024 · If you only experience performance issues on desktop, the problem might lie in the site implementation or Flutter's own limitations (personally, I haven't encountered performance issues). Analyzed the performance using Lighthouse on a physical mobile device running Chrome, accessed via chrome://inspect/#devices. 0 for flutter take a bit more complex lottie file Actual results Under 3. Flutter DevTools: Use DevTools to monitor widget rebuilds, track memory usage, and diagnose CPU performance issues. found in release: 2. platform-android Android applications specifically team-android Owned by Android platform team triaged-android Triaged by Android Maui vs. When an app performs well, developers can focus on building new features and improving the user experience, rather than fixing performance issues. You can continue execution, step into functions, and inspect the call stack. has reproducible steps The issue has been confirmed reproducible and is ready to work on P2 Important issues not at the top of the work list perf: energy Performance issues related to energy use (power, watts) perf: speed Performance issues related to (mostly rendering) speed r: fixed Issue is closed as already fixed in a Feb 21, 2024 · c: performance Relates to speed or footprint issues (see "perf:" labels) f: scrolling Viewports, list views, slivers, etc. Top 5 Flutter Performance Issues Likely to Face. 3 performance issue in drawing using flutter Jun 17, 2022 · Hello! I am trying to use external map in my app through webview, but scrolling actions causing a performance problems. Feb 25, 2020 · This only occurs on the modal bottom sheet (showModalBottomSheet) and not on the normal one (showBottomSheet). 10 framework flutter/packages/flutter repository. Nov 16, 2021 · It would be more useful to break down the list of issues uncovered by this benchmark into individual Github issues. No doubt, apps can become laggy and janky. If not handled properly, state management can lead to bugs and performance issues. It displays CPU, memory, and FPS statistics on the device screen. Mar 22, 2022 · See also e: labels. Bottlenecks here can result in dropped frames and janky animations. In external browser this html works fine without critical performance issues. Aug 9, 2024 · Optimizing performance can help developers be more productive. Feb 12, 2025 · Types of Flutter Performance Issues. 6 Devices: iPhone 11 Pro Max Logs flutter doctor -v [ ] Flutter (Channel stable, 3. Before diving into optimization techniques, it’s essential to understand the two primary performance areas in Flutter: UI Thread (Rendering Performance): Handles the rendering of widgets, animations, and layouts. Jun 11, 2020 · See also e: labels. This can affect the app's performance and lead to lag and jank. May 14, 2021 · performance issue in drawing using flutter. If I don't use initialScrollOffset the performance is fine. (Alternatively, you can check the Flutter GitHub issue database using the performance label. Jul 24, 2020 · I tried using Listview and Sliverlist, but the performance of my list is very slow. Thanks in part to Flutter's Skia engine and its ability to quickly create and dispose of widgets, Flutter applications are performant by default, so you only need to avoid common pitfalls to achieve excellent performance. If widgets aren't displayed correctly on mobile or performance is poor, it's due to rendering with HTML. Update : Don't use GetX for overall production-level projects. If you're a Flutter developer looking to optimize your apps, you're in the right place. Please keep in mind that it is best to test performance on a real device and in profile mode. Flutter DevTools is a powerful suite of performance tools. Jul 24, 2024 · The framework already offers multiple performance optimization tools. builder() comes in very handy by creating the widgets on demand. Sep 17, 2021 · When I try to scroll through those pages quickly, I get terrible janks/performance issues. An export of the performance trace. Problems involving time when something takes too long or requires the gadget to run faster, the device’s speed will increase. 7 found in release: 3. 0. Here I have a large li Sep 14, 2021 · a: text input Entering text in a text field or keyboard related problems c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 2. Some users, who built apps on Flutter noticed performance issues after the update. May 5, 2019 · Flutter — Firebase Performance and Crashlytics. Pay attention: when i tap on zoom in/out buttons there is no performance drops. The Performance View: A web-based interface that connects to your app and displays detailed performance metrics. Jan 18, 2024 · Use Flutter DevTools to measure the frame rendering time and identify performance issues Conclusion In conclusion, Flutter app development requires a performant and high-quality consideration of Flutter transforms the entire app development process. c: proposal A detailed proposal for a change to Flutter perf: speed Performance issues related to (mostly rendering) speed P1 High-priority issues at the top of the work list team-framework Owned by Framework team triaged-framework Triaged by Framework team labels Jul 11, 2023 Mar 8, 2020 · This is the major bug in flutter, a very clear performance mirror as compared to react-native. Jun 7, 2021 · Today I ran into some performance issue when I used my image gallery app on a folder of 17k images. Jan 11, 2022 · performance issue in drawing using flutter. Test Setup and Observations: I hosted a dummy Flutter web application on this URL without using the --web-renderer html flag. May 20, 2023 · c: performance Relates to speed or footprint issues (see "perf:" labels) d: devtools DevTools related - suite of performance and debugging tools P2 Important issues not at the top of the work list waiting for customer response The Flutter team cannot make further progress on this issue until the original reporter responds will need additional (Alternatively, you can check the Flutter GitHub issue database using the performance label. Apr 24, 2024 · FAQs on Performance Optimization in Flutter Apps What is the Performance View in Flutter DevTools used for? The Performance View in Flutter DevTools is utilized for debugging performance issues in Flutter apps. When I update the loop for render to 50000, I get flutter: render cost: 18 on an iPod Touch 2015, both in debug and release mode. 8. How much does the performance drop as compared to apps written in Java or . Flutter performance profiling. Both Maui and Flutter improve their "tuning" each year. Slow App Startup: 5-second splash screens? No thanks. I use the flutter_animate package for animations, and I have a button with a shimmer effect. – Benyamin Commented Aug 27, 2021 at 15:07 Dec 23, 2024 · 1. 12 I had no problems with more complex Lottie files of around 1 MB. Jul 28, 2020 · It certainly looks like this is mostly a problem with Samsung devices. Flutter DevTools is a suite of performance monitoring and debugging tools for Flutter developers. 10. . 4 Animation is slow in flutter. As I am working on a larg application and I worried about performance issue, becuase I need a supper fast app. This can help developers to spot performance issues. If you are facing similar issues, try these steps and I hope they help! If you are facing similar issues, try these steps and I hope they help! Nov 16, 2021 · It would be more useful to break down the list of issues uncovered by this benchmark into individual Github issues. There are a number of methods you may employ to optimize widget rebuilding in Flutter in order Jul 13, 2021 · The described tools are rather complicated, so we recommend using them when you’ve already checked all the simple aspects, but still have problems with the performance of the app. Flutter provides a suite of tools and resources that are invaluable for diagnosing and solving performance issues. This overlay provides real-time information about widget rebuilds, frame rate, and build times, allowing you to visualize performance issues directly within the app itself. Doctor summary (to see all details, run flutter May 16, 2024 · c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 3. TYPE_CLASS_DATETIME keyboard, it would probably be best to err on the conservative side and go with the full default keyboard for the date pickers and expose the keyboardType as a parameter so that Apr 8, 2025 · Nearly 60% of mobile devs in a 2023 Stack Overflow poll reported app performance problems; Flutter-specific concerns like rebuilds and state management were on the rise. 1: Use smaller image files: No doubt, images are essential for any mobile application. Flutter doesn’t separate the business and interface layers, which means you may be unable to apply your existing learning curve to develop these apps. The tests show such metrics as Apr 14, 2020 · Hello, I am using flutter web view in my app and its a crucial part of my app. Scrolling is fine and smooth. Flutter Gems is also a visual alternative to pub. How to measure Flutter performance? Measuring Flutter Performance involves assessing the speed and efficiency of a Flutter app. So I decided to use the Flutter profiler for the first time. 20 Found to occur in 1. Feel free to reach out for expert guidance tailored to your needs May 9, 2022 · Flutter apps are very performant if some of the performance optimisations are kept in mind while developing the apps. 4. Here I have a large li Feb 7, 2025 · Steps to reproduce. We can't find many big apps made all in flutter and the ones that are (Hamilton or McDonald reward page) are laggy. Use a code Flutter was going to be our choice until we noticed problems with IOS performance. This optimization gains importance as we deal with long lists of children: we don't need to render items that are not in the view, therefore ListView. Benchmark. all cross-platforms have performance issues but between them, flutter is the fastest. Mar 9, 2023 · Troubleshooting And Debugging Your Flutter App are critical skills for any developer and are especially important in mobile app development. Below I attached a screenshot of the performance analysis, which shows, that all widgets inside the sheet are beeing constantly rebuilt while the user is dragging. As for the exact performance issue pointed out by this issue something like solution 1 of @Peng-Qian sounds possible to me I'm pretty new to Flutter app development and most of my experience is in developing mobile apps. May 28, 2024 · Performance overlay: Flutter DevTools offer a Performance Overlay that can be displayed on top of your running app. flutter pub global activate devtools flutter pub global run devtools. After upgrading from Flutter 3. passed first triage perf: speed Performance issues related to (mostly rendering) speed c: performance Relates to speed or footprint issues (see "perf:" labels) c: rendering UI glitches reported at the engine/skia or impeller rendering level and removed from: performance template Issues created via a performance issue The performance issue in drawing app using flutter is resolved by using drawPath() and instead of using setState for each points to update use NotifyListener() to refresh than it will be more efficient than setState. 24. Flutter Performance Best Practices: Flutter’s official performance best practices. 13 Found to occur in 2. Performance Profiling. It helps you track and fix issues in Flutter comes with several performance-analysis tools built in, such as the Dart Observatory or the Flutter's Performance tab. 0. It is a free, open-source project developed by the Flutter team, and it provides developers with a graphical user interface (GUI) to visualize the performance and behavior of their Flutter apps. There are advantages and disadvantages to the two approaches. Mar 6, 2025 · Flutter Documentation: The official Flutter documentation. Avoid The Build() Method. ) There is a second scenario where the performance is heavily impacted and I think flutter core has to do something in this. dependency: dart Dart team may need to help us perf: speed Performance issues related to (mostly rendering) speed tool Affects the "flutter" command-line tool. For performance details on creating more than one FlutterEngine, see multiple Flutters. Flutter performance profilingDiagnosing UI performance issues in Jul 30, 2020 · c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 3. 5 found in release: 2. Apr 19, 2020 · For flutter however we could do something similar or perhaps something entirely different, my point being that it will definitely not be trivial and might even require every user to optimise somewhat for their usecase. Flutter offers several tools for performance analysis. Jul 21, 2023 · Performance issues with Impeller. These tools allow you to monitor your app’s performance in real time and identify issues such as excessive CPU usage, slow frame rates, and memory leaks. For example: MainView - Provides Foo - SubView1 - binds to foo - SubView1_1 - binds to foo - LeafNode1 - binds to foo Is this going to cause multiple rebuilds or performance concerns? Oct 3, 2024 · In the rapidly evolving world of mobile app development, performance is a critical factor that can make or break user experience. Nov 7, 2021 · 2. 5. See also f: labels. Oct 30, 2024 · Flutter DevTools. For example, Flutter DevTools offers a visual and easy way of inspecting and analyzing an application. Dec 15, 2024 · After the Flutter 3. Lots of jank. User can add up to 1000 items at once. 20 Found to occur in 3. of(context). Zip the file and attach it to the May 23, 2019 · How to boost flutter performance and speed up our application. flutter run Nov 22, 2024 · 8. Developing in native would not be optimal from a business perspective, given the market we would access by also having Android, and as a team of 2 Apr 9, 2021 · Now I'm in a trouble with the performance issue of ObjectBox in Flutter. Significant Flutter Performance Issues. – Benyamin Commented Aug 27, 2021 at 15:07 Nov 5, 2024 · As a software development company, we understand the importance of creating high-performance applications that provide a seamless user experience. Maui's approach "should" be able to approach the performance of a native app. However I have noticed that the webview page load is more than twice the original time it takes on the native app and mobile safari browser. #1 from here. These issues occur across various animations, such as routing transitions, UI updates, and even simple widget animations. 5 Found to occur in 2. widget only changes position, flutter performance has some peak but is acceptable with ey May 5, 2023 · Flutter Web WASM is set to be out later in 2023 (Google IO?) [1] and should fix the performance issues. Subsequently, I replaced the Column with a ListView, but the optimizer warned that using shrinkWrap: true on the ListView could lead to performance issues. However, I find that it is performing fine when running the Flutter 3. NET ? Flutter has tons of drawbacks, compose multiplatform fixes all cross platform issues, it’s just the matter of flutter devs focus on improving compose and ditch flutter, the problem of flutter devs is that they’re like BTS stans, they defend the framework by their soul and deny any drawback of flutter, compose multiplatform is built on KMM When using provider, I'm wondering if there are any issues binding multiple levels of the subtree to a parent value. Profile mode gives you detailed performance information, Release mode optimizes the app for performance and speed, this will help you to identify and fix performance issues. If you opened the PedidosYa application at the beginning of 2021, you probably got frustrated Mar 7, 2012 · Steps to reproduce Install 3. Dec 24, 2019 · c: performance Relates to speed or footprint issues (see "perf:" labels) customer: crowd Affects or could affect many people, though not necessarily a specific customer. Use flutter_lints to enforce code style and quality guidelines, which indirectly contribute to better performance and maintainability. Dart Language Tour: A comprehensive guide to the Dart language. May 16, 2019 · a: images Loading, displaying, rendering images c: performance Relates to speed or footprint issues (see "perf:" labels) customer: crowd Affects or could affect many people, though not necessarily a specific customer. May 15, 2025 · To examine performance issues in Flutter, see the Timeline view. Aug 1, 2018 · Aerodynamic instabilities of super long-span bridges have always been the essential issue in design and construction, especially during the deck erection process. Diagnoses app performance issues occurring on your users’ devices. Nov 5, 2022 · How to fix common performance issues in Flutter This article is a compilation of tips and tricks regarding performance of Flutter applications. You can monitor the performance of your app in real-time and find issues like excessive CPU use, frame rate slowdowns, or memory leaks. Performance profiling is crucial for ensuring that your Flutter app runs smoothly across a variety of devices and use cases. Apr 4, 2024 · Here, the scope was intentionally broadened to include performance issues other than just app performance issues because they can share many tools regardless of who the performers are. Probably the files are a little bit complex (76kb) but I need to find a method to improve the performance. flutter run --release Feb 3, 2019 · I’m also having some performance issue with load from assets. In this blog post, we’ll explore a comprehensive set of tips and techniques Nov 27, 2023 · Tools and Resources for Flutter Performance Enhancement. Generally, Flutter applications are performant by default, so you only need to avoid common pitfalls to get excellent performance. Common mistakes in Flutter app development can hinder performance, cause UI inconsistencies, and complicate code maintenance. 9. Jan 17, 2025 · To learn how to use the Performance View (part of Flutter DevTools) for debugging performance issues, see Using the Performance view. Use traces to monitor the performance of specific parts See also f: labels. Please include the following information when submitting an issue for Impeller: The device you are running on, including the chip information. Part 2: Profiling Flutter Apps. 22 to 3. Scrolling in listview,builder is Jun 5, 2023 · Use Dart’s built-in Profile and Release modes for testing performance Use Dart’s built-in “Profile” and “Release” modes for testing performance. Apr 27, 2025 · List of Top Flutter Sentry, App Performance, Crash Analytics & Insights packages. Based on the Xihoumen Bridge, this paper presents a particular insight into the flutter performance of a mega-bridge with a central-slotted box girder while in construction. Neither will ever have as small a memory footprint as a natively coded app. Other issues should be filed separately. I will deduplicate this issue with #76248 as it seems the biggest contributor. Flutter Gems is a curated list of Dart & Flutter packages that are categorized based on functionality. Mar 24, 2022 · No performance issues at all. Apr 30, 2025 · In this story, let’s deep dive into the tools, techniques, and real-world practices for profiling performance in Flutter so you can ship apps that feel buttery smooth — on every device. As per the doc, it. 0 compared to our previous Flutter version 3. The performance drop is due to the fact, that all previous items are also built until the initialScrollOffset is reached. 6, on macOS 13. 20 framework flutter/packages/flutter repository. Flutter performance and memory usage. To solve this problem, Flutter provides the Key class, which can be used to assign a unique identity to a widget that persists even if the widget tree is modified. open pdf file from assets flutter. Time Related Issues. Sep 20, 2023 · This guide will discuss the top reasons for performance issues with Flutter apps and how to optimize them. 22 has reproducible steps The issue has been confirmed reproducible and is ready to work on P3 Issues that are less important to the Flutter project perf: speed Performance issues related to (mostly rendering) speed platform May 23, 2019 · How to boost flutter performance and speed up our application. Jan 25, 2021 · Then you can check with Flutter performance profiling The overlay should always be viewed in profile mode, since debug mode performance is intentionally sacrificed in exchange for expensive asserts that are intended to aid development, and thus the results are misleading. Mar 21, 2019 · c: performance Relates to speed or footprint issues (see "perf:" labels) f: scrolling Viewports, list views, slivers, etc. Jan 16, 2025 · 1. Jun 29, 2024 · This article offers comprehensive strategies to identify and resolve performance issues in Flutter applications, ensuring smooth animations and responsive UI interactions by maintaining a frame May 9, 2018 · Debug build has some performance issues, as many asserts and other validations happen in release build. size to MediaQuery. We cannot address them all at once. 24, our team got report from some users about animation stutters, frame drops. Sep 14, 2021 · a: text input Entering text in a text field or keyboard related problems c: performance Relates to speed or footprint issues (see "perf:" labels) found in release: 2. 3. Jul 6, 2024 · There is a list of Frequently asked questions, so you can find out if the questions you have or the problems you're having were already answered or encountered, and whether there are existing solutions. So I have a large amount of text & pictures & animations, which would benefit from HTML's dressing & flexibility, but there are elements I want to program. Mar 11, 2024 · Even if Flutter app development is among the greatest frameworks for cross-platform development, there’s a chance that employing the framework can cause performance problems. Understanding Flutter’s Performance Bottlenecks. Related questions. Terrible PageView performance. However, when it comes to developing mobile apps with Flutter, performance issues can sometimes arise, impacting the overall quality of the application. Preferring using stateful widgets with pages using textformfield even it have GetX. May 8, 2021 · Hey! Yes, we want dart:ffi to provide good performance. May 11, 2023 · Details My App using GestureDetector to move widgets, but it lags & missing frames causing UX bad I made two simple samples to check this issue: a. Rendering stutters, crashes, rendering glitches. Some people are saying that the issue found only on simulators. It’s particularly useful for profiling apps and identifying performance bottlenecks. Jan 5, 2024 · Flutter is constantly being developed and updated, which means new and better features. See my video recorded on a Xiaomi Redmi Note 8 Pro in profile mode as proof. 7 Found to occur in 3. ) Finally, the performance issues are divided into four categories. 8. Must Read: Flutter Project Ideas Aug 17, 2023 · Details Target Platform: iOS Target OS version/browser: 16. Mar 28, 2024 · This guide will arm you with the top tools to pinpoint bottlenecks, analyze rendering issues, and fine-tune your app, ensuring it provides that delightful user experience Flutter promises. Modified 2 years, 9 months ago. 22 has reproducible steps The issue has been confirmed reproducible and is ready to work on P3 Issues that are less important to the Flutter project perf: speed Performance issues related to (mostly rendering) speed platform Apr 10, 2025 · Prefix the issue title with [Impeller] and include a small reproducible test case. Flutter offers built-in tools for performance profiling. Here are some of the most common performance issues with Flutter development. High Memory Usage: Apps crashing on Jul 12, 2024 · I have been struggling with the same issue of yours and this is how I handled it: first, replace all MediaQuery. Avoid these errors to build robust applications. Additionally, finding Flutter packages that work for desktop is challenging, according to Sep 5, 2023 · Flutter Performance Monitor: A third-party tool for real-time performance monitoring. dev Sep 17, 2021 · When I try to scroll through those pages quickly, I get terrible janks/performance issues. Compared to other development methods, the Flutter application’s APK size is larger. Running app in release build may help. Flutter DevTools. To learn more, see the sections in this topic. However, like any development platform, Flutter apps can encounter performance issues, bugs, and crashes that need debugging. Mar 11, 2025 · This can cause unexpected behavior and can lead to performance issues. and removed from: performance template Issues created via a performance issue template labels Feb 25, 2020 Nov 13, 2024 · It only occurs on debug mode. 19 Found to occur in 3. Apr 2, 2023 · Why is the issue of performance in an Application so important? Let’s see the example of PedidosYa. 13. 10. Jul 18, 2019 · It's working, but the performance is bad and causing a lag of ~ one second when pressing the button to open the page. found in release: 1. Apr 9, 2019 · flutter is way more faster than its current competitives like react native or ionic or whatever. Check out the agenda for this year's Google I/O! Feb 25, 2020 · See also f: labels. When building a Flutter app, you may run into various issues, from minor bugs to major performance problems. To view the performance data, including the widget rebuild information, start the app in Debug mode, and then open the Performance tool window using View > Tool Windows > Flutter Performance . 16+ flutter Install newest lottie 3. 6 on channel stable Apr 16, 2023 · One of the most common issues that developers face in Flutter is state management. org Feb 24, 2025 · flutter analyze and flutter_lints: Use flutter analyze to check your code for static analysis issues and ensure you are following best practices. Apr 30, 2024 · Profiling and analyzing performance issues in Flutter apps is crucial for identifying bottlenecks, optimizing resource usage, and ensuring a smooth user experience. Here’s how you can profile and… Feb 12, 2020 · You can use Flutter profiling tools to determine the performance and determine performance problems in your application, you can find more useful details in the following link about Flutter performance profiling. Flutter Linter: A package for enforcing coding standards. For example, Flutter app performance and infra performance might share the same dashboard and similar alert mechanisms. Profiling involves analyzing your app's performance to identify bottlenecks and optimize it. To avoid such bad performance issues, you can use CounterWidget, which helps develop animation without rebuilding the entire widget tree. 10 Found to occur in 3. I have build big Flutter Web Apps and Performance was the only real issue, hope it is improved soon. I understand that it can be janky in debug mode but it is more noticeably janky in Flutter 3. I found out the problem is caused by an animation. Jul 2, 2022 · flutter performance issues when focus textformfield. Dec 12, 2024 · c: performance Relates to speed or footprint issues (see "perf:" labels) e: device-specific Only manifests on certain devices e: impeller Impeller rendering backend issues and features requests engine flutter/engine repository. Let’s look at each of them individually, starting with the time-related concerns. Build, test, and deploy beautiful mobile, web, desktop, and embedded apps from a single codebase. Flutter vertical scrolling specially with images have jerking issues. Dec 12, 2022 · This resulted in the lowest user satisfaction while debugging performance issues and deploying the app. In DevTools, you can visualize your widget rebuilds, analyze memory usage, and identify potential performance bottlenecks. I have models of Event Recurrence EventPlace which have the relationship in each. As developers increasingly turn to Flutter for its powerful UI capabilities and cross-platform potential, understanding how to optimize app performance has never been more essential. Feb 10, 2025 · App performance encompasses various aspects, from raw speed and I/O throughput to the smoothness of the user interface. Does anyone know why, and how bad it is? May 6, 2025 · Flutter provides several built-in performance analysis tools, including the Dart Observatory and the Flutter Performance tab in the DevTools. here is an example app on playstore (Flutter demo: CINEMA) you can download and test, but that i am sure its flutter bug because all similar apps or with long list views this happens. Part of the DevTools Sep 27, 2018 · c: performance Relates to speed or footprint issues (see "perf:" labels) f: scrolling Viewports, list views, slivers, etc. Initially this is no issue but with a growing number of list items the app Flutter 提供多种性能分析工具。以下是其中几种： The Performance Overlay: Displays a simplified set of metrics directly within your running app. 5 22G74 darwin-x64, locale ru-RU) • Flutter version 3. Jan 8, 2025 · Steps to reproduce When running a Flutter app with Impeller on a Galaxy Tab 7 Lite (Android 14), the performance is really bad. perf: speed Performance issues related to (mostly rendering) speed engine flutter/engine repository. 27 update, I noticed that my phone gets very hot during debugging. Probably it is better to preload the two svg files and then use them. Ask Question Asked 2 years, 9 months ago. Apr 22, 2025 · That’s the common reason for poor Flutter performance. Jun 21, 2021 · I have a flutter app where user can add items to a list which are stored in firebase. Sep 20, 2023 · Stuck on a complex performance issue? Our team at FlutterDude specializes in Flutter app development and performance tuning. engine flutter/engine repository. I started from the Flutter performance profiling page. But, I want to create an app for desktop devices so I wanted to know how performant Flutter apps are, when they run on desktops. To address this, I placed the ListView in a Container with a fixed height to turn off shrink wrap. builder() allows us to create children dynamically as the user scrolls, contrary to ListView and Column that, instead, create all the children in one go. 20 has reproducible steps The issue has been confirmed reproducible and is ready to work on c: performance Relates to speed or footprint issues (see "perf:" labels) and removed c: performance Relates to speed or footprint issues (see "perf:" labels) labels Jun 12, 2020 Jan 11, 2022 · performance issue in drawing using flutter. 6 framework flutter/packages/flutter repository. 0 version on Impeller mode, which I just learned from the issue template when submitting this issue. See also e: labels. Keeping current with 2025's best practices is now required rather than voluntary. f: scrolling Viewports, list views, slivers, etc. When I swipe through the pages slowly, and wait for the scrolling animation to finish, everything is smooth. There are two sorts of time and space-related Flutter Performance Issues. While this page primarily focuses on UI smoothness (lack of stutter or jank), the tools described here can often be used to diagnose other performance issues as well. Dec 12, 2022 · Now, let’s get to know about some of the key Flutter app performance issues. See also p: labels. Performance is one of the most crucial factors that determine the success of a mobile app. Suppose you have a screen with flutter animation or some gif going on and you open a dialog with another flutter file running,the screen will render a lot in this case as two animations are running. When the app's state changes, it can lead to a chain of rebuilds in the widgets tree. I’m using a rotation animation that during the execution continuously switch between two svg files. Basically, these are the things I wish someone told me when I just started using Flutter. Flutter provides several tools and libraries to help developers identify and resolve performance issues. also check this link for more information and details about performance best practices. Identify and fix issues in your code while debugging. Step 5: Fix Issues. 6. I clearly not recommending the package as it is been made issues over production, but you can use for minimizing code in some parts, Navigation or in your personal projects. The app performance can also be measured with Flutter performance benchmark tests, which are done via integration testing. Things like not selectable Text like the Author mentions just show that he does not really know what he is talking about. Avoiding the use of the Build() method is one of the important Flutter performance optimization tips you should consider. Nov 20, 2021 · ListView. 10 Laggy animation. 22 Found to occur in 3. See full list on geeksforgeeks. However, given that it is apparently up to the keyboard installed by the user to decide what it wants to show for a InputType. May 10, 2021 · The Flutter web team says that for the moment HTML documents are better for (dressing) large bodies of text than dressing with the Flutter Widget framework, Flutter excel at programmatic apps. 7. They correspond to the four labels that are used in the Flutter GitHub issue database: “ perf: speed ”, “ perf: memory ”, “ perf: app size ”, “ perf: energy ”. ) Dec 19, 2024 · Rendering animations in your app is one of the most cited topics of interest when it comes to measuring performance. 13 has reproducible steps The issue has been confirmed reproducible and is ready to work on P2 Important issues not at the top of the work list perf: speed Performance issues related to (mostly rendering) speed platform-android Android Jan 16, 2025 · When the Flutter UI component is released, the UI-related memory is freed. Even if the Items are loaded from the internet, the scrolling is very slow. I wouldn't say the bridge is a thing of the past, when we speak about Flutter performance I think it has to do with machine code compilation rather than the architecture itself, because the bridge and Flutter's channels are in fact the same solution, asynchronous serialized message sending through a pub sub system. The problem is that the data insertion takes too long time and this cause the app crash since the operation stacks at the main thread until they finish it. sizeOf(context) the reason is that some properties (other than size) of MediaQuery change when the keyboard is open and close and its trigger unnecessary build. 19 found in release: 3. See also t: labels. Step 1 Jan 20, 2025 · Welcome back, folks! It's Toxigon here, and today we're diving deep into the world of Flutter performance profiling as we stand in 2025. framework flutter/packages/flutter repository. This tool offers the visualization of some metrics, such as CPU utilization, frame rate and memory usage. found in release: 3. jxvb cbi tvrnf zksazb bvw xsnjo evokbvc plle jnoj pjdl