颤振的android应用程序在产品构建上崩溃答案

【问题标题】：flutter android app crashing on prod build颤振的android应用程序在产品构建上崩溃
【发布时间】：2021-07-08 08:32:31
【问题描述】：

我正在为我的项目运行构建命令，以便在它被推送之前在本地检查发布模式，一切运行正常，然后应用程序在运行此命令时立即关闭：

flutter run --release --flavor prod

它失败并显示此错误消息：

Launching lib/main.dart on I4113 in release mode...
Running Gradle task 'assembleProdRelease'...                            
Running Gradle task 'assembleProdRelease'... Done                  35.0s
✓ Built build/app/outputs/flutter-apk/app-prod-release.apk (32.6MB).
Installing build/app/outputs/flutter-apk/app.apk...                 5.4s

Flutter run key commands.
h Repeat this help message.
c Clear the screen
q Quit (terminate the application on the device).
E/AndroidRuntime(31478): FATAL EXCEPTION: main
E/AndroidRuntime(31478): Process: io.rev PID: 31478
E/AndroidRuntime(31478): java.lang.NoSuchMethodError: No interface method a()Ljava/lang/String; in class Landroid/content/res/XmlResourceParser; or its super classes (declaration of 'android.content.res.XmlResourceParser' appears in /system/framework/framework.jar)
E/AndroidRuntime(31478):        at androidx.core.content.FileProvider.parsePathStrategy(Unknown Source:39)
E/AndroidRuntime(31478):        at androidx.core.content.FileProvider.getPathStrategy(Unknown Source:13)
E/AndroidRuntime(31478):        at androidx.core.content.FileProvider.attachInfo(Unknown Source:13)
E/AndroidRuntime(31478):        at android.app.ActivityThread.installProvider(ActivityThread.java:7045)
E/AndroidRuntime(31478):        at android.app.ActivityThread.installContentProviders(ActivityThread.java:6590)
E/AndroidRuntime(31478):        at android.app.ActivityThread.handleBindApplication(ActivityThread.java:6485)
E/AndroidRuntime(31478):        at android.app.ActivityThread.access$1300(ActivityThread.java:225)
E/AndroidRuntime(31478):        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1865)
E/AndroidRuntime(31478):        at android.os.Handler.dispatchMessage(Handler.java:107)
E/AndroidRuntime(31478):        at android.os.Looper.loop(Looper.java:359)
E/AndroidRuntime(31478):        at android.app.ActivityThread.main(ActivityThread.java:7418)
E/AndroidRuntime(31478):        at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(31478):        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/AndroidRuntime(31478):        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:935)

【问题讨论】：

标签： java android flutter

【解决方案1】：

R8 在发布时删除了该类。尝试将这些行添加到您的 app/proguard-rules.pro

-keepattributes EnclosingMethod
-keepattributes InnerClasses
-dontwarn org.xmlpull.v1.**
-dontnote org.xmlpull.v1.**
-keep class org.xmlpull.** { *; }
-keepclassmembers class org.xmlpull.** { *; }

app/build.gradle：

release {
    proguardFiles getDefaultProguardFile(
        'proguard-android-optimize.txt'),
        'proguard-rules.pro'
    signingConfig signingConfigs.release
}

【讨论】：