Join FlipAndroid.COM Telegram Group: https://t.me/joinchat/F_aqThGkhwcLzmI49vKAiw


Proguard Parámetro del tipo que falta

Intento ocultar mi código de la aplicación androide con ProGuard . Pero después de esto mi aplicación da la excepción en ejecución:

 11-15 01:46:26.818: W/System.err(21810): java.lang.RuntimeException: Missing type parameter. 11-15 01:46:26.828: W/System.err(21810): at da.<init>(Unknown Source) 11-15 01:46:26.828: W/System.err(21810): at gc.<init>(Unknown Source) 11-15 01:46:26.828: W/System.err(21810): at fx.f(Unknown Source) 11-15 01:46:26.828: W/System.err(21810): at com.yourshows.activity.UnwatchedActivity.onResume(Unknown Source) 

Comprobé un archivo de mapping y encontré esto:

 com.google.gson.reflect.TypeToken -> da: 

Creo que es líneas en mi aplicación como:

  Type mapType = new TypeToken<Map<Integer, WatchedEpisodes>>(){}.getType(); // define generic type jsData = gson.fromJson(r, mapType); 

No puedo entender qué conclusiones debo hacer? No utilice el nombre de la variable menos de tres caracteres o qué?

UPD: respuesta

3 Solutions collect form web for “Proguard Parámetro del tipo que falta”

La respuesta es: use este proguard.cfg

 ##---------------Begin: proguard configuration common for all Android apps ---------- -optimizationpasses 5 -dontusemixedcaseclassnames -dontskipnonpubliclibraryclasses -dontskipnonpubliclibraryclassmembers -dontpreverify -verbose -dump class_files.txt -printseeds seeds.txt -printusage unused.txt -printmapping mapping.txt -optimizations !code/simplification/arithmetic,!field/*,!class/merging/* -allowaccessmodification -keepattributes *Annotation* -renamesourcefileattribute SourceFile -keepattributes SourceFile,LineNumberTable -repackageclasses '' -keep public class * extends android.app.Activity -keep public class * extends android.app.Application -keep public class * extends android.app.Service -keep public class * extends android.content.BroadcastReceiver -keep public class * extends android.content.ContentProvider -keep public class * extends android.app.backup.BackupAgentHelper -keep public class * extends android.preference.Preference -keep public class com.android.vending.licensing.ILicensingService -dontnote com.android.vending.licensing.ILicensingService # Explicitly preserve all serialization members. The Serializable interface # is only a marker interface, so it wouldn't save them. -keepclassmembers class * implements java.io.Serializable { static final long serialVersionUID; private static final java.io.ObjectStreamField[] serialPersistentFields; private void writeObject(java.io.ObjectOutputStream); private void readObject(java.io.ObjectInputStream); java.lang.Object writeReplace(); java.lang.Object readResolve(); } # Preserve all native method names and the names of their classes. -keepclasseswithmembernames class * { native <methods>; } -keepclasseswithmembernames class * { public <init>(android.content.Context, android.util.AttributeSet); } -keepclasseswithmembernames class * { public <init>(android.content.Context, android.util.AttributeSet, int); } # Preserve static fields of inner classes of R classes that might be accessed # through introspection. -keepclassmembers class **.R$* { public static <fields>; } # Preserve the special static methods that are required in all enumeration classes. -keepclassmembers enum * { public static **[] values(); public static ** valueOf(java.lang.String); } -keep public class * { public protected *; } -keep class * implements android.os.Parcelable { public static final android.os.Parcelable$Creator *; } ##---------------End: proguard configuration common for all Android apps ---------- ##---------------Begin: proguard configuration for Gson ---------- # Gson uses generic type information stored in a class file when working with fields. Proguard # removes such information by default, so configure it to keep all of it. -keepattributes Signature # Gson specific classes -keep class sun.misc.Unsafe { *; } #-keep class com.google.gson.stream.** { *; } # Application classes that will be serialized/deserialized over Gson -keep class com.google.gson.examples.android.model.** { *; } ##---------------End: proguard configuration for Gson ---------- 

Muchas gracias al propietario de este proyecto -> google-gson


UPD : google/gson tiene su ejemplo de configuración proguard para aplicaciones android.

Ver en github

Se propone utilizar esta plantilla de configuración

 ##---------------Begin: proguard configuration for Gson ---------- # Gson uses generic type information stored in a class file when working with fields. Proguard # removes such information by default, so configure it to keep all of it. -keepattributes Signature # For using GSON @Expose annotation -keepattributes *Annotation* # Gson specific classes -keep class sun.misc.Unsafe { *; } #-keep class com.google.gson.stream.** { *; } # Application classes that will be serialized/deserialized over Gson -keep class com.google.gson.examples.android.model.** { *; } ##---------------End: proguard configuration for Gson ---------- 

Puesto que no noté el acoplamiento en la pregunta en primero, aquí están las líneas específicas mencionadas en el hilo necesario para conseguir GSON para trabajar con Proguard:

 # Gson uses generic type information stored in a class file when working with fields. Proguard # removes such information by default, so configure it to keep all of it. -keepattributes Signature # Gson specific classes -keep class sun.misc.Unsafe { *; } #-keep class com.google.gson.stream.** { *; } # Application classes that will be serialized/deserialized over Gson -keep class com.google.gson.examples.android.model.** { *; } 

Este problema se puede solucionar utilizando una forma diferente de crear la instancia TypeToken (para el tipo parametrizado Map<Integer, WatchedEpisodes> ):

 Type collectionType = TypeToken.get( $Gson$Types.newParameterizedTypeWithOwner(null, Map.class, Integer.class, WatchedEpisodes.class)).getType(); 

La próxima versión de gson (supongo que 2.8), le permitirá escribir esto más fácilmente:

 Type collectionType = TypeToken.getParameterized(Map.class, Integer.class, WatchedEpisodes.class).getType(); 
FlipAndroid es un fan de Google para Android, Todo sobre Android Phones, Android Wear, Android Dev y Aplicaciones para Android Aplicaciones.