问题

I have read some other topics in stackovwrflow with similar problems, But none is answered. So I'm asking here.
我已经阅读了一些在Stack Overflow上与类似问题相关的帖子，但没有得到答案。所以我在这里提问。

I am developing an airhockey game using flutter in android studio. Everything is normal in debbuging mode. But when I build a release version, it's not working correctly.
我正在使用Flutter在Android Studio中开发一款空中曲棍球游戏。在调试模式下一切正常。但是当我构建发布版本时，它不能正常工作。

Maybe this informations help:
也许这些信息会有所帮助：

I tested the app on a Xiaomi which uses android 4. In that device, sometimes the app will open, but most of the time only a black screen appears and nothing else. (about 70% of the time it fails.)
我在一台使用Android 4的小米设备上测试了这个应用程序。在该设备上，有时应用程序会打开，但大多数情况下只会出现黑屏，没有其他内容。（大约70%的时间会失败。）

An other device is a Samsung galaxy J7 with android 8. In that case, the black screen happens more. (about 90%).
另一台设备是三星Galaxy J7，使用Android 8。在这种情况下，黑屏的问题更加严重。（大约90%的时间会出现黑屏。）

The third device is a Xiaomi POCO X3 Pro with android 11. In that case, I could not use the app for just a single time.
第三台设备是小米POCO X3 Pro，使用Android 11。在这种情况下，我一次都无法使用该应用程序。

The libraries I used are:
我使用的库包括：

'package:flutter/services.dart'
'dart:async'
'dart:math'

Let me know if you need more information.
如果您需要更多信息，请告诉我。
By the way, you can get code from github to look in case you need.
顺便说一下，您可以从GitHub获取代码，以便查看，如果需要的话。

'package:flutter/services.dart'
'dart:async'
'dart:math'

答案1

得分: 1

**修复后**：

如果您的 `environment sdk: '>=2.x <3.0.0'`，则可以使用以下代码：

```dart
import 'dart:ui';

Future<void> main() async {
  if (window.physicalSize.isEmpty) {
    window.onMetricsChanged = () {
      if (!window.physicalSize.isEmpty) {
        window.onMetricsChanged = null;
        runApp(const MyApp());
      }
    };
  } else {
    runApp(const MyApp());
  }
}

如果您的 environment sdk: ^3.0.0，可以使用以下代码：

Future<void> main() async {
  FlutterView? flutterView = PlatformDispatcher.instance.views.firstOrNull;
  if (flutterView == null || flutterView.physicalSize.isEmpty) {
    PlatformDispatcher.instance.onMetricsChanged = () {
      flutterView = PlatformDispatcher.instance.views.firstOrNull;
      if (flutterView != null && !flutterView!.physicalSize.isEmpty) {
        PlatformDispatcher.instance.onMetricsChanged = null;
        runApp(const MyApp());
      }
    };
  } else {
    runApp(const MyApp());
  }
}

void main() {
  runApp(const MyApp());
}

import 'dart:ui';

Future<void> main() async {
  if (window.physicalSize.isEmpty) {
    window.onMetricsChanged = () {
      if (!window.physicalSize.isEmpty) {
        window.onMetricsChanged = null;
        runApp(const MyApp());
      }
    };
  } else {
    runApp(const MyApp());
  }
}

Future<void> main() async {
  FlutterView? flutterView = PlatformDispatcher.instance.views.firstOrNull;
  if (flutterView == null || flutterView.physicalSize.isEmpty) {
    PlatformDispatcher.instance.onMetricsChanged = () {
      flutterView = PlatformDispatcher.instance.views.firstOrNull;
      if (flutterView != null && !flutterView!.physicalSize.isEmpty) {
        PlatformDispatcher.instance.onMetricsChanged = null;
        runApp(const MyApp());
      }
    };
  } else {
    runApp(const MyApp());
  }
}