Flutter: Schedule audio events for background execution

I am implementing an app in Flutter, for which I need to schedule (audio) events in advance. Only after one event is completed I can schedule the next, since the durat...

Spawning Isolates in for loop and processing parallelly in Dart

<pre><code>for(int i=0;i&lt;2;i++){ ..............preprocessing(pr)........... ..... = await someFunc(someData[i]) (this line spawns off new Isolate) ..............

How To Create A Filtered Image In Flutter

I am trying to create an image filter, what i want to know is, is it possible to apply a color filter to an image and then save that image with the color filters appli...

How to adjust Hue Saturation and Brightness of an image or widget in Flutter?

In my Flutter app, I have an image and three sliders, one for <strong>Hue</strong>, one for <strong>Saturation</strong>, and one for <strong>Brightness</strong>, and I...

How to create a blank image with a specified size in Flutter

I want to create a blank image with a white background and a specified size in Flutter, then I may add other images onto this blank image later to merge them as a new...

Flutter : App Build Failed, ProcessException - gradlew.bat exited abnormally:

I have upgraded flutter to Flutter version 1.2.1. After upgrading when I try to build my application, the following error occurs. Cannot find a solution to this yet. A...

generating GIF thumbnail for video - flutter - image

i'm trying to create an animated thumbnail for videos on the device. Its an android/ios flutter app. so my approach was to do it on the phone with the following dart p...

android_alarm_manager plugin does not continue executing in background in Flutter:

I spent whole weekend in experimenting with <a href="https://pub.dartlang.org/packages/android_alarm_manager" rel="nofollow noreferrer">android_alarm_manager</a> plug-...

How to create a Flutter background service that works also when app closed

I am developing a Flutter app for academic purposes in university. Now, I need to run a sort of "always on" background service in order to use Bluetooth and most impor...

How can I reduce the video recording size in flutter?

I'm using flutter <a href="https://pub.dartlang.org/packages/camera" rel="nofollow noreferrer">camera plugin</a> to record the video. But the recorded video size is to...

FFmpeg: How to Trim and Multiple Overlay Videos

I have a FFmpeg command that is currently working to overlay an image, several <code>drawtext</code> commands, a scaling command, and then finally the output. However,...

Cannot call location.getLocation in the background

Package used:<a href="https://pub.dev/packages/location" rel="nofollow noreferrer">https://pub.dev/packages/location</a> My code: <pre><code>void main() asy...

FirebaseMessaging.onBackgroundMessage stops working when switched to different app

I am using FlutterFire FCM, the onBackgroundMessage method works when the app is in background but when a different app is opened, the method is not invoked. The issue...

flutter : start app in background when the android or ios phones turned on

I want to run my flutter app in the background when the phone turns on. in other words, the app starts in the background in phone startup. until now I didn't use packa...

In background flutter app works only for 1 minute after that it stops its working, is Dart-Isolates good to try?

made a simple counter app with <a href="https://pub.dev/packages/shake" rel="nofollow noreferrer">shake</a> package to increment counter var by shaking phone, things w...