[error record] error -32000 received from application: there are no running service protocol

One 、 Error message

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stay Android Studio Run in Flutter Program , Click on Button to run the program , Report the following error :

Performing hot restart...Syncing files to device Pixel 2...Error -32000 received from application: There are no running service protocol handlers.Restarted application in 1,106ms.

Two 、 Solution

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1、 Solution 1

stay Android Studio Medium Flutter In Engineering , Of " Terminal " Execute the following two commands successively at the command line terminal :

① Execute the first command :

flutter clean

② Carry out the second order :

flutter run

Execution effect :

Microsoft Windows [ edition  10.0.18363.1139](c) 2019 Microsoft Corporation. All rights reserved .D:\002_Project\002_Android_Learn\flutter_app_hello>flutter cleanDeleting build...                                                  729msDeleting .dart_tool...                                               6msD:\002_Project\002_Android_Learn\flutter_app_hello>flutter runLaunching lib\main.dart on Pixel 2 in debug mode...Running Gradle task 'assembleDebug'...Running Gradle task 'assembleDebug'... Done                        52.2s√ Built build\app\outputs\apk\debug\app-debug.apk.Installing build\app\outputs\apk\app.apk...                        14.1s

Execute screenshot :

2、 Solution 2 ( recommend )

To run a Flutter After the application , There is a point in the lower right corner of the triangle in the figure below , Indicates that there are currently Flutter The app is running , Run it again , Will pop up the above " Error -32000 received … " error ;

Kill the current application process in the mobile phone , Exit app ;

At this time, the point on the right side of the triangle disappears , Run again , You can run it successfully ;