Flutter release apk doesnt work - just white screen

Question

My app works perfectly in DEBUG mode. But when I create a release APK or run in release mode I get an only white screen after starting the app. After some trying, I detected that the problem is in method, that I call after runApp(); But what is the problem?

void handleAppLifecycleState() {
  SystemChannels.lifecycle.setMessageHandler((msg) async {
    if (msg == "AppLifecycleState.resumed") {
      await updateStatusBar();
    }
    return Future.value(msg);
  });
}

Are you missing some Manifest permissions? Debug and Release builds use different AndroidManifest.xml files. — Scott, Mar 30 '20 at 18:15
How do you detected that this one is the problematic method? — i6x86, Mar 31 '20 at 00:03
I did not miss some permissions in manifest. It was working before upgrading flutter. And this problem was detected randomly. I was commenting on some parts of code — Mykhailo Krentsin, Mar 31 '20 at 18:36
Facing the same issue! Did you find a solution for the same? — Nicks, Aug 17 '20 at 11:04
yes, I use the method described here: https://stackoverflow.com/questions/49869873/flutter-update-widgets-on-resume — Mykhailo Krentsin, Oct 13 '20 at 20:38

score 2 · Answer 1 · answered Feb 08 '21 at 21:14

2

I thing your problem is your gradle version. a was same problem and I solved it with change gradle version to 3.5.4.

dependencies {
        classpath "com.android.tools.build:gradle:3.5.4"
     ...

    }

answered Feb 08 '21 at 21:14

Aslami.dev

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Flutter release apk doesnt work - just white screen

1 Answers1