我的项目在序列化/反序列化期间实现了一个TypeAdapter
inGson
来保留对象的多态状态。无论如何,该项目在开发测试期间运行良好,但是当它使用proguard 混淆发布并经过测试时,它就崩溃了。
03-21 10:06:53.632: E/AndroidRuntime(12441): FATAL EXCEPTION: main
03-21 10:06:53.632: E/AndroidRuntime(12441): java.lang.AssertionError
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.internal.bind.TypeAdapters$EnumTypeAdapter.<init>(SourceFile:724)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.internal.bind.TypeAdapters$26.create(SourceFile:753)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.Gson.getAdapter(SourceFile:353)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory$1.<init>(SourceFile:82)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.createBoundField(SourceFile:81)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.getBoundFields(SourceFile:118)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.internal.bind.ReflectiveTypeAdapterFactory.create(SourceFile:72)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.Gson.getAdapter(SourceFile:353)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.Gson.toJson(SourceFile:578)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.Gson.toJsonTree(SourceFile:479)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.Gson.toJsonTree(SourceFile:458)
03-21 10:06:53.632: E/AndroidRuntime(12441): at com.google.gson.Gson$3.serialize(SourceFile:137)
我的 Gson 特定的 proguard 配置是:
##---------------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.** { *; }
#This is extra - added by me to exclude gson obfuscation
-keep class com.google.gson.** { *; }
##---------------End: proguard configuration for Gson ----------
我使用的TypeAdapter是:
public final class GsonWorkshiftAdapter implements JsonSerializer<IWorkshift>, JsonDeserializer<IWorkshift> {
private static final String CLASSNAME = "CLASSNAME";
private static final String INSTANCE = "INSTANCE";
@Override
public JsonElement serialize(IWorkshift src, Type typeOfSrc, JsonSerializationContext context) {
String className = src.getClass().getCanonicalName();
JsonElement elem = context.serialize(src);
JsonObject retValue = new JsonObject();
retValue.addProperty(CLASSNAME, className);
retValue.add(INSTANCE, elem);
return retValue;
}
@Override
public IWorkshift deserialize(JsonElement json, Type typeOfT, JsonDeserializationContext context) throws JsonParseException {
JsonObject jsonObject = json.getAsJsonObject();
JsonPrimitive prim = (JsonPrimitive) jsonObject.get(CLASSNAME);
String className = prim.getAsString();
Class<?> klass = null;
try { klass = Class.forName(className); }
catch (ClassNotFoundException e) { throw new JsonParseException(e.getMessage()); }
return context.deserialize(jsonObject.get(INSTANCE), klass);
}
}
我对 Gson 特有的这个错误进行了大量搜索,但找不到任何有用的答案。但是我发现了另一个类似问题的问题。
开发者社区的任何帮助将不胜感激。