Gson 与 proguard 一同使用

关键要注意# Application classes that will be serialized/deserialized over Gson这一行，要写上自己的数据类。
另外为了保险起见，还可以在变量前添加注解@SerializedName("varName")并在class前添加注解@Keep

##---------------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
-dontwarn sun.misc.**
#-keep class com.google.gson.stream.** { *; }

# Application classes that will be serialized/deserialized over Gson
-keep class my.app.json.* {
    
     *; }

# Prevent proguard from stripping interface information from TypeAdapter, TypeAdapterFactory,
# JsonSerializer, JsonDeserializer instances (so they can be used in @JsonAdapter)
-keep class * extends com.google.gson.TypeAdapter
-keep class * implements com.google.gson.TypeAdapterFactory
-keep class * implements com.google.gson.JsonSerializer
-keep class * implements com.google.gson.JsonDeserializer

# Prevent R8 from leaving Data object members always null
-keepclassmembers,allowobfuscation class * {
    
    
  @com.google.gson.annotations.SerializedName <fields>;
}

##---------------End: proguard configuration for Gson  ----------

import androidx.annotation.Keep;

import com.google.gson.annotations.SerializedName;

@Keep
public class FilterStructure {
    
    
    @SerializedName("title")
    public String title;
    @SerializedName("items")
    public Items[] items;
    public static class Items{
    
    
        @SerializedName("tag_id")
        public int tag_id;
        @SerializedName("tag_name")
        public String tag_name;
    }
}