13

I created first flutter app on Mac.

but I can't build it on iOS simulator. when I build it; an iOS simulator will run. and wait.

vs Code say to me;

-Cannot launch without an active device

-Failed to launch iOS Simulator: Error: Emulator didn't connect within 60 seconds

IDE : vs Code

my Macbook : MacBook Pro 2011 early

macOs version : high Sierra

flutter version : 13.8

xcode version : 9.4

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3
  • When you open the project in xcode (select the ios map and preferably the .xcworkspace) and then try to build it to e.g. the iphone 8? Any difference? Commented Jan 12, 2020 at 12:46
  • I tried and build it. I need upgrade xcode version. I m trying xcode 10.3 install to high Sierra. Commented Jan 12, 2020 at 21:00
  • You can still build the ios version by running is in xcode. Not necessary to do it in AS / VS. (Also I believe High Sierra cannot be upgraded to a higher xcode version.) Commented Jan 14, 2020 at 22:34

11 Answers 11

Reset to default
43

Open Xcode and go to preferences - > locations - > Command Line Tools and select Xcode 10 or above

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2 Comments

Nice! It works. I'm using latest version of xCode (12.1).
I did this, and already had 14.3 set. But set it again, and VS Code was once again able to detect my physical iOS devices. Thanks.
6

at the first run bellow command

sudo xcode-select --switch /Applications/Xcode.app/Contents/Developer

and then

sudo xcodebuild -runFirstLaunch

after than run "flutter devices" now you see ios simulators if running

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5

I have also same issue
follow these instruciton:

Xcode -> Prefrences -> locations -> select your command line tols

Follow the image

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2

Which device do you use as a Simulator? From the docs:

Make sure your simulator is using a 64-bit device (iPhone 5s or later) by checking the settings in the simulator’s Hardware > Device menu.

Run flutter doctor. Are there any errors?

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1 Comment

hi. i chosed iPhone x
2

I have the same problem. Flutter doesn't see any simulators. Flutter required now Xcode 10.2 minimum. You can't run 10.2 on high sierra, therefore use flatter.

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1 Comment

I did run 10.2 on high Sierra. look my blog page : www.onurbozkurt.com.tr it's Turkish but if u look images u can understand. it's possible.
1

I have also same issue follow these instruciton:

Xcode -> Prefrences -> locations -> select your command line tols

Same process we can check in video:- https://youtu.be/2HnOWSC-yaM

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0

If you have multiple Xcode and don't have Xcode With default name "Xcode", this problem may occur. Try to rename one of xcode to "Xcode"

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0

The major issue is with XCode. To quickly fix the issue, open project on XCode(make sure you choose the /ios path inside your flutter project.) and Open Preferences. On preferences dialog, go to Location and choose a command line tool from given option. Restart your IDE.

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0

In my case (with VS Code) I just had to quit the simulator app in my dock and select the simulator again.

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0

I had the same problem , also I've been trying to solve it with all these solutions here, I solved it when I I deleted ios folder and wrote flutter create . in the terminal

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-2

I had many problems with flutter stable version before, Try to change it to Dev version

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