Flutter 应用程序打开，但卡在启动画面上

Question

When I built my iOS app, it opened perfectly in the simulator on my Macbook. When I publish the app on the itunes store, the app does not work anymore. The splashscreen is shown, but stays on the screen.

Answer 1

Solution for me:

1) updated my iOS toolchain with flutter doctor

2) flutter clean

3) flutter build ios --release in the terminal

4) Archive in Xcode

Answer 2

我通过删除project_root/ios/Pods/ & project_root/ios/Podfile.lock并在flutter clean & flutter build ios --release之后再次运行pod install解决这个flutter build ios --release

Answer 3

I tried various solutions. But finally i found out issue was version of my android studio(ide used for development for flutter, in my case). I updated my version to 3.2.1 and then followed instructions to run in xcode and it worked in my case. Hope it helps!

Answer 4

I added WidgetsFlutterBinding.ensureInitialized() to the main page.

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(MyApp());
}

Answer 5

I had this problem with an android build of an app that uses multiple flavors, but in the end it turned out I was simply using the wrong APK file.

So the build created 3 apk files eg.

myapp.apk
myapp-test-debug.apk
myapp-test-release.apk

My assumption was to use the test-release.apk which got the app stuck on the splash screen. Using the myapp.apk did not have this problem.

Bit of a facepalm moment for myself but maybe this helps someone else looking for an answer!

Answer 6

I face the same issues, and I finally found that the root of the problem is the setting of workspace of xcode,when i change the workspace settings from legacy build system to new build system,the bug disappear . hope can help you.

Answer 7

Maybe Podfile is out of date.

Solution for me:

1. Remove Pobfile folder and Pobfile.lock direction: "your_flutter_project/ios/"
2. Run flutter clean
3. Run flutter pub get
4. Run flutter build ios

Hope this helpful.

Answer 8

If non of the above solutions work for you on ios, Try this. In xcode under Targets > General. Set Main interface to Main and set luanch screen file to LaunchScreen.

This worked for me on IOS.

Answer 9

Add android:allowBackup="false" tag inside your <application> object in your app manifest