有没有办法在颤振中执行多线程

Question

Documentation says flutter is single threaded even the asynchronous task is executed on the same thread which means that while we wait for another task to be completed, we will continue executing our synchronous code. But I have a situation where i need to process on multiple images, and process on each image takes approx 1.5 secconds. Sample code for this is below

for(var image in images){
    processOnImage(image);    
}

processOnImage(var image){
    // it takes approx 1.5 secconds 
}

So in above script if i have 20 images then it takes approx 30 seccond, which is too high in my case. So I want to know that is there any way to start multithreading to reduce time consumption, like below

for(var image in images){
    startNewThread processOnImage(image);    
}

processOnImage(var image){
    // it takes approx 1.5 secconds 
}

Answer 1

You should read the dart docs. https://dart.dev/guides/language/concurrency Dart supports concurrent programming

for(var image in images){
    processOnImage(image);    
}

procesOnImage(var image){
    var receive = ReceivePort();
    Isolate.spawn(yourFunctionToRun, receive.sendPort);
}