[BUG] Unhandled exception: FormatException: Invalid number (at character 1)

[amalikmuhd]

ℹ️ Info

Version: e.g. v0.9.2

💬 Description

I updated flutter to 2.10.0, I ran the command and it showed successfully " Successfully generated launcher icons" but below the successful sentence I got this below message

Unhandled exception:
FormatException: Invalid number (at character 1)

^

#0 int._handleFormatError (dart:core-patch/integers_patch.dart:129:7)
#1 int.parse (dart:core-patch/integers_patch.dart:55:14)
#2 minSdk (package:flutter_launcher_icons/android.dart:309:18)
#3 createIconsFromConfig (package:flutter_launcher_icons/main.dart:94:47)
#4 createIconsFromArguments (package:flutter_launcher_icons/main.dart:60:7)
#5 main (file:///Users/aoomle/tools/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.9.2/bin/main.dart:6:26)
#6 _delayEntrypointInvocation. (dart:isolate-patch/isolate_patch.dart:295:32)
#7 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:192:12)
pub finished with exit code 255

[KAnggara75]

i have same bug like yours, with v0.9.1

[wocodes]

Experienced same here

[KAnggara75]

ℹ️ Info

Version: e.g. v0.9.2

💬 Description

I updated flutter to 2.10.0, I ran the command and it showed successfully " Successfully generated launcher icons" but below the successful sentence I got this below message

Unhandled exception: FormatException: Invalid number (at character 1)

^

#0 int._handleFormatError (dart:core-patch/integers_patch.dart:129:7) #1 int.parse (dart:core-patch/integers_patch.dart:55:14) #2 minSdk (package:flutter_launcher_icons/android.dart:309:18) #3 createIconsFromConfig (package:flutter_launcher_icons/main.dart:94:47) #4 createIconsFromArguments (package:flutter_launcher_icons/main.dart:60:7) #5 main (file:///Users/aoomle/tools/flutter/.pub-cache/hosted/pub.dartlang.org/flutter_launcher_icons-0.9.2/bin/main.dart:6:26) #6 _delayEntrypointInvocation. (dart:isolate-patch/isolate_patch.dart:295:32) #7 _RawReceivePortImpl._handleMessage (dart:isolate-patch/isolate_patch.dart:192:12) pub finished with exit code 255

change file android/app/build.gradle
from this

to this

[kabagouda]

I just got the same error and fixed it by manually setting the minSdkVersion in android/app/build.gradle

    defaultConfig {
        applicationId "com.example.foo"
        minSdkVersion 16 // <<== set this
        targetSdkVersion flutter.targetSdkVersion
        versionCode flutterVersionCode.toInteger()
        versionName flutterVersionName
    }

New Flutter projects now have the minSdkVersion set to flutter.minSdkVersion which (currently) resolves to 16 but it appears the package does not pick up that value.

EDIT: Note, minSDKVersion 16 is the bare minimum. Some apps may require a higher minimum for like 19 or even 21 depending on what plugins you have installed (e.g. WebView, Google Maps and several FlutterFire plugins etc.)

Originally posted by @cklanac in #324 (comment)

[harlekintiger]

Also important: You can't have the string 'minSdkVersion' anywhere before the actual declaration of the min SDK Version! If you did //minSdkVersion flutter.minSdkVersion above the version it will crash. Remove it or move it down below the actual declaration.
Maybe the plugin should check if a line is commented out and ignore those

[MikiVanousek]

I have the same issue. I think solving it by removing flutter.minSdkVersion goes against having things specified in pubspce.yaml, which is the reason I wanted to use this package in the first place.

[Clashkid155]

It showing ✓ Successfully generated launcher icons gives the impression that it actually succeed. I think that should be fixed too if it doesn't require to much work.

[codesxt]

The solution was not working for me until I read @harlekintiger 's comment. Removed "minSdkVersion" from the comments and it worked perfectly.

[eilgug]

I got the same issue and fixed by this:
https://stackoverflow.com/questions/70580684/flutter-launcher-icons-not-working-unhandled-exception-formatexception-invalid

[MikiVanousek]

It is actually the same for other people's production flutter apps on my device

[abraralidev]

I also facing this error. Can anyone tell me the solution?

[MikiVanousek]

It is not solved.

[Francmape]

Changed the gradle but error still exists.