错误：运行 R8 时检测到缺少类。请添加缺少的类或应用在

Question

我完成了应用程序的测试，但每当我运行 flutter build apk 或 flutter build apk --release 时，我都会遇到此错误

ERROR: Missing classes detected while running R8. Please add the missing classes or apply additional keep rules that are generated in C:\Users\HP\Downloads\Friendnpal_flutter-main\Friendnpal_flutter-main\build\flutter_inappwebview\outputs\mapping\release\missing_rules.txt.
ERROR: R8: Missing class android.window.BackEvent (referenced from: void io.flutter.view.FlutterView.startBackGesture(android.window.BackEvent) and 1 other context)

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':flutter_inappwebview:minifyReleaseWithR8'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.R8Task$R8Runnable
   > Compilation failed to complete

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.
> Get more help at https://help.gradle.org.

BUILD FAILED in 35s
Running Gradle task 'assembleRelease'...                           36.7s
Gradle task assembleRelease failed with exit code 1

我尝试将我的missing.txt文件中的内容复制到我的proguard规则中，这是我的proguard规则

# Please add these rules to your existing keep rules in order to suppress warnings.
# This is generated automatically by the Android Gradle plugin.
-dontwarn android.window.BackEvent
# https://github.com/flutter/flutter/issues/78625#issuecomment-804164524
#-keep class io.flutter.app.** { *; }
-keep class io.flutter.plugin.** { *; }
-keep class io.flutter.util.** { *; }
-keep class io.flutter.view.** { *; }
#-keep class io.flutter.** { *; }
-keep class io.flutter.plugins.** { *; }

Answer 1

将其添加到顶部的

android/build.gradle

文件中。

subprojects {
    afterEvaluate {
        if (it.name == "flutter_inappwebview_android") {
            it.android.buildTypes.release.minifyEnabled = false
        }
    }
}

这对我有用。

如果这不适合您，您可以参考this了解更多