NoSuchMethodError per VideoView.setOnPreparedListener()

Question

Ho problemi con Proguard e la mia VideoView personalizzata per la mia app. Sembra che offuscare il mio codice causi problemi con la mia VideoView. Ogni volta che provo a impostare OnPreparedListener per il video, la mia app si arresta in modo anomalo. Vedi:

11-13 15:54:45.881 19428-19428/com.<REDACTED> E/AndroidRuntime﹕ FATAL EXCEPTION: main 
Process: com.<REDACTED>, PID: 19428 
java.lang.NoSuchMethodError: No virtual method setOnPreparedListener(Landroid/media/MediaPlayer$e;)V in class Landroid/widget/VideoView; or its super classes (declaration of 'android.widget.VideoView' appears in /system/framework/framework.jar:classes2.dex) 
     at com.<REDACTED>.ui.module.MHVideoPlayerModule.initializeVideoPlayer(MHVideoPlayerModule.java:174) 
     at com.<REDACTED>.ui.module.MHVideoPlayerModule.initializeViewData(MHVideoPlayerModule.java:154) 
     at com.<REDACTED>.ui.activity.MHVideoDetailActivity.a(MHVideoDetailActivity.java:198) 
     at com.<REDACTED>.ui.activity.MHVideoDetailActivity.b(MHVideoDetailActivity.java:171) 
     at com.<REDACTED>.ui.activity.MHVideoDetailActivity.a_(MHVideoDetailActivity.java:255) 
     at com.<REDACTED>.service.f.al.b(MHVideoUrlTaskManager.java:131) 
     at com.<REDACTED>.service.a.e.onPostExecute(MHAsyncServiceTask.java:194) 
     at android.os.AsyncTask.finish(AsyncTask.java:632) 
     at android.os.AsyncTask.access$600(AsyncTask.java:177) 
     ... 

Ho provato ad aggiungere le righe sottostanti al file Proguard, ma non aiutano.

-keep class com.<REDACTED>.ui.module.MHVideoPlayerModule { *; } 
-keep class android.widget.VideoView { *; } 

EDIT: Ecco il file proguard-project.txt:

# If your project uses WebView with JS, uncomment the following 
# and specify the fully qualified class name to the JavaScript interface 
# class: 
-keepclassmembers class com.<REDACTED>.common.JavaScriptInterface { 
    public *; 
} 

# Google Play Services start 
# https://developer.android.com/google/play-services/setup.html 
-keep class * extends java.util.ListResourceBundle { 
    protected Object[][] getContents(); 
} 

-keep public class com.google.android.gms.common.internal.safeparcel.SafeParcelable { 
    public static final *** NULL; 
} 

-keepnames @com.google.android.gms.common.annotation.KeepName class * 
-keepclassmembernames class * { 
    @com.google.android.gms.common.annotation.KeepName *; 
} 

-keepnames class * implements android.os.Parcelable { 
    public static final ** CREATOR; 
} 
# Google Play Services end 

-dontwarn javax.jdo.** 
-dontwarn javax.naming.** 
-dontwarn com.google.api.client.googleapis.extensions.android.gms.** 
-dontwarn com.google.android.gms.** 
-dontwarn com.squareup.okhttp.** 

-keep public class android.net.http.SslError 
-keep public class android.webkit.WebViewClient 
-keep public class android.widget.VideoView 

-dontwarn android.webkit.WebView 
-dontwarn android.net.http.SslError 
-dontwarn android.webkit.WebViewClient 
-dontwarn android.media.MediaPlayer 
-dontwarn android.widget.VideoView 

-dontwarn org.bouncycastle.** 
-dontwarn org.apache.commons.codec.binary.Base64 

-keepattributes SourceFile,LineNumberTable 
-printusage build/outputs/proguard/unused.txt 
-printconfiguration build/outputs/proguard/configuration.txt 

-libraryjars libs 

-keep class com.crashlytics.** { *; } 
-keep class io.fabric.** { *; } 
-keep class android.support.v4.app.** { *; } 
-keep interface android.support.v4.app.** { *; } 
-keep class com.facebook.** { *; } 

# New Relic start 
# https://docs.newrelic.com/docs/mobile-monitoring/mobile-monitoring-installation/android/installing-android-apps-gradle-android-studio#proguard 
-keep class com.newrelic.** { *; } 
-dontwarn com.newrelic.** 
-keepattributes Exceptions, Signature, InnerClasses 
# New Relic end 

-dontshrink 

Answer 1

Ti sembra stanno fornendo anche un'implementazione personalizzata android.media.MediaPlayer e/o android.media.MediaPlayer.OnPreparedListener:

java.lang.NoSuchMethodError: No virtual method setOnPreparedListener(Landroid/media/MediaPlayer$e;)V in class Landroid/widget/VideoView; or its super classes (declaration of 'android.widget.VideoView' appears in /system/framework/framework.jar:classes2.dex)

setOnPreparedListener - Il metodo che si sta chiamando

(L - Il prefisso Smali per gli oggetti

android/media/MediaPlayer$e - Il nome del tipo effettivo si sta cercando di passare al metodo. Questo è il problema. Il tipo di classe interna OnPreparedListener viene offuscato. Deve essere android/media/MediaPlayer$OnPreparedListener

android/widget/VideoView la classe che sta tentando di ospitare questa firma del metodo.

---

Hai un personalizzato MediaPlayer o MediaPlayer.OnPreparedListener che utilizza i nomi dei pacchetti originali? Se è così, devi anche escludere quelli da Proguard. Qualcosa di simile:

-keep class android.media.** { *; }

Answer 2

basta controllare inserendo sotto la linea nel vostro "progaurd-project.txt" file di

-keep class android.widget.** { *; }