I use my phone as a device for run my flutter app

still always like that Launching lib\main.dart on JAT L29 in debug mode...

CodePudding user response：

Do flutter clean, Then flutter pub get, And then run the program

CodePudding user response：

Since you didn't provide more details and it seems you are new to Flutter, It's Normal for a Flutter Project to take a few moments when you run/execute it before showing the actual app, and if it still takes much longer than you should run flutter clean -> flutter pub get -> rerun the program!