I am using simplexml in my android project, and everything works fine until I obfuscate the code. Then, errors start pouring in.
Part of the XML is as follows:
<categories success="true">
<category id="102" caption="Magazin" parent="0" num_mags="114" >
<category id="15" caption="Kunst" parent="102" num_mags="13" >
<category id="17" caption="Design" parent="15" num_mags="10" ></category>
<category id="18" caption="Haute+Couture" parent="15" num_mags="2" >
...
I have two classes: CategoryItemList:
@Root(name = "categories")
public class CategoryItemList {
private final List<CategoryItem> mCategoryItems;
/**
* Create a new category items list.
*
* @param categoryItems the list of category items
*/
public CategoryItemList(@ElementList(name = "category", inline = true) final List<CategoryItem> categoryItems) {
mCategoryItems = categoryItems;
}
@ElementList(name = "category", inline = true)
public List<CategoryItem> getCategoryItems() {
return mCategoryItems;
}
}
and CategoryItem:
@Root(name = "category")
public class CategoryItem {
private final int mId;
private final String mCaption;
private final int mParent;
private final int mNumberOfMagazines;
private final ArrayList<CategoryItem> mSubCategoryItems;
/**
* Creating a new category item.
*
* @param id the category id
* @param caption the name of category
* @param parent the parent category
* @param numMags the number of magazines from that category
*/
public CategoryItem(@Attribute(name = "id") final int id,
@Attribute(name = "caption") final String caption,
@Attribute(name = "parent") final int parent,
@Attribute(name = "num_mags") final int numMags,
@ElementList(name = "category", inline = true, required = false) final ArrayList<CategoryItem> subCategoryItems) {
mId = id;
mCaption = caption;
mParent = parent;
mNumberOfMagazines = numMags;
mSubCategoryItems = subCategoryItems;
}
@Attribute(name = "id")
public int getId() {
return mId;
}
@Attribute(name = "caption")
public String getCaption() {
String categoryName = null;
try {
categoryName = URLDecoder.decode(mCaption, "UTF-8");
} catch (final UnsupportedEncodingException e) {
e.printStackTrace();
}
return categoryName;
}
@Attribute(name = "parent")
public int getParentId() {
return mParent;
}
@Attribute(name = "num_mags")
public int getNumbersOfMagazines() {
return mNumberOfMagazines;
}
@ElementList(name = "category", inline = true, required = false)
public ArrayList<CategoryItem> getSubCategory() {
return mSubCategoryItems;
}
}
Now, when I obfuscate the code, if I leave out "-keepattributes Annotation" I get a PersistenceException: Constructor not matched for class.
If I include it, I get an "Unable to determine generic type for parameter 1 of constructor" exception, all these at runtime.
As you can see, the names are there, and I tried to -keep the entire class holding them, all to no avail.
How can I configure Proguard to work with simplexml?
EDIT: My proguard.cfg file is as follows: (it's a bit stuffed with all the things I've tried, but this is the current version)
-dontusemixedcaseclassnames
-dontskipnonpubliclibraryclasses
-dontpreverify
-verbose
-printseeds
-dontoptimize
-keepattributes *Annotation*
-keepattributes EnclosingMethod
-libraryjars <java.home>/lib/rt.jar (javax/xml/stream/** )
-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
-keepclasseswithmembers class * {
native <methods>;
}
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet);
}
-keepclasseswithmembers class * {
public <init>(android.content.Context, android.util.AttributeSet, int);
}
-keepclassmembers enum * {
public static **[] values();
public static ** valueOf(java.lang.String);
}
-keep class * implements android.os.Parcelable {
public static final android.os.Parcelable$Creator *;
}
-dontwarn android.support.**,de.greenrobot.**,org.simpleframework.xml.**
-keep class com.crittercism.**{ *; }
-keepclassmembernames class com.crittercism.**{ *; }
-keepclasseswithmembers class com.crittercism.**{ *; }
-keep class org.simpleframework.**{ *; }
-keepclassmembernames class org.simpleframework.**{ *; }
-keepclasseswithmembers class org.simpleframework.**{ *; }
-keep class crittercism.android.**
-keepclassmembers public class com.crittercism.*{ *;}
-keep public class database.** {
public static <fields>;
}
-keep class android.support.**
-keepclasseswithmembers class android.support.** { *;}
-keep class org.simpleframeork.**
-keepclasseswithmembers class org.simpleframeork.** { *;}
-keep class javax.**
-keepclasseswithmembers class javax.** { *;}
-keep class com.test.category.**
-keepclassmembernames class com.test.category.** { *; }
-keepclasseswithmembers class com.test.category.** { *;}
-keep class com.test.download.**
-keepclassmembernames class com.test.download.** { *; }
-keepclasseswithmembers class com.test.download.** { *;}
-keep class org.simpleframework.**{ *; }
-keep class org.simpleframework.xml.**{ *; }
-keep class org.simpleframework.xml.core.**{ *; }
-keep class org.simpleframework.xml.util.**{ *; }
-keep class org.simpleframework.xml.stream.**{ *; }
-keepclassmembers class * implements java.io.Serializable {
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();
}
You already figured out that keeping annotation is a good idea. You may also try to add type parameter to @ElementList annotation - apparently there is a problem with generic type erasure and simplexml needs additional hint about type of elements in the list
you may also play around with -keepattributes Signature, *Annotation*:
The "Signature" attribute is required to be able to access generic types when compiling in JDK 5.0 and higher.