I have an Android-based application that connects to Google App Engine using Rest services, the application works fine until it is confused through ProGuard before release.
Error registered in LogCat when starting a running application:
Unable to convert a [application/json,UTF-8] representation into an object of
class com.enterprisemk.android.bcw.bincollection.WasteCollectionAreasContainer
org.codehaus.jackson.map.JsonMappingException: No suitable constructor found
for type [simple type, class
com.enterprisemk.android.bcw.bincollection.WasteCollectionAreasContainer]:
can not instantiate from JSON object (need to add/enable type information?)
In the proguard-project.txt file, I have the following:
-keepattributes *Annotation*,EnclosingMethod
-keep public class org.w3c.** {public private protected *;}
-dontwarn org.w3c.**
-keep public class org.joda.time.** {public private protected *;}
-dontwarn org.joda.time.**
-keep public class org.restlet.** { *; }
-dontwarn org.restlet.**
-keep public class org.codehaus.** { *; }
-dontwarn org.codehaus.**
-keepattributes Signature
-keepnames class com.fasterxml.jackson.** { *; }
-dontwarn com.fasterxml.jackson.databind.**
And my class to which the error relates looks like this:
public class WasteCollectionAreasContainer {
public List<WasteCollectionAreas> wasteCollectionAreasList;
public List<WasteCollectionAreas> getWasteCollectionAreasList() {
return wasteCollectionAreasList;
}
public void setWasteCollectionAreasist(List<WasteCollectionAreas> wasteCollectionAreasList) {
this.wasteCollectionAreasList = wasteCollectionAreasList;
}
public WasteCollectionAreasContainer() {
wasteCollectionAreasList = new ArrayList<WasteCollectionAreas>();
}
@JsonCreator
public WasteCollectionAreasContainer(List<WasteCollectionAreas> wasteCollectionAreasList) {
this.wasteCollectionAreasList = wasteCollectionAreasList;
}
}
To repeat before obfuscation through ProGuard, the application works fine.
Can someone help me solve this problem?
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