Migrate to Xstream to prevent too many changes. Still have memory issue, but some flexibility to still find away around it.

app/build.gradle

@@ -29,9 +29,7 @@ dependencies {
     compile 'com.squareup.picasso:picasso:2.5.2' //Apache 2.0
     compile 'com.github.thorbenprimke:realm-recyclerview:0.9.5' //Apache 2.0
     compile 'com.squareup.retrofit:retrofit:2.0.0-beta2' //Apache 2.0
-    compile ('com.squareup.retrofit:converter-simplexml:2.0.0-beta2') {
+    compile ('com.thoughtworks.xstream:xstream:1.4.7') { //BSD
-        exclude group: 'xpp3', module: 'xpp3'
+        exclude group: 'xmlpull'
-        exclude group: 'stax', module: 'stax-api'
-        exclude group: 'stax', module: 'stax'
     }
 }

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/api/MagnatuneAlbumsConverter.java

@@ -1,10 +1,12 @@
 package com.magnatune.eyecreate.companionformagnatune.api;
 
 import com.magnatune.eyecreate.companionformagnatune.model.AlbumResponse;
+import com.magnatune.eyecreate.companionformagnatune.model.xml.Album;
+import com.magnatune.eyecreate.companionformagnatune.model.xml.Track;
 import com.squareup.okhttp.ResponseBody;
-
+import com.thoughtworks.xstream.XStream;
-import org.simpleframework.xml.Serializer;
+import com.thoughtworks.xstream.converters.basic.DateConverter;
-import org.simpleframework.xml.core.Persister;
+import com.thoughtworks.xstream.io.xml.Xpp3Driver;
 
 import java.io.IOException;
 import java.util.zip.GZIPInputStream;
@@ -15,10 +17,15 @@ public class MagnatuneAlbumsConverter implements Converter<ResponseBody,AlbumRes
     @Override
     public AlbumResponse convert(ResponseBody value) throws IOException {
         GZIPInputStream compressedStream = new GZIPInputStream(value.byteStream());
-        Serializer serializer = new Persister();
+        XStream parser = new XStream(new Xpp3Driver());
+        parser.processAnnotations(Album.class);
+        parser.processAnnotations(Track.class);
+        parser.processAnnotations(AlbumResponse.class);
+        parser.registerConverter(new DateConverter("yyyy-MM-dd",new String[]{}));
+        parser.ignoreUnknownElements();
         AlbumResponse conversion = null;
         try {
-            conversion = serializer.read(AlbumResponse.class,compressedStream);
+            conversion = (AlbumResponse) parser.fromXML(compressedStream);
         } catch (Exception e) {
             e.printStackTrace();
         }

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/model/AlbumResponse.java

@@ -1,16 +1,14 @@
 package com.magnatune.eyecreate.companionformagnatune.model;
 
-import com.magnatune.eyecreate.companionformagnatune.model.xml.*;
+import com.thoughtworks.xstream.annotations.XStreamAlias;
-
+import com.thoughtworks.xstream.annotations.XStreamImplicit;
-import org.simpleframework.xml.ElementList;
-import org.simpleframework.xml.Root;
 
 import java.util.List;
 
-@Root(name="AllAlbums")
+@XStreamAlias("AllAlbums")
 public class AlbumResponse {
 
-    @ElementList(inline=true,type= com.magnatune.eyecreate.companionformagnatune.model.xml.Album.class)
+    @XStreamImplicit(itemFieldName = "Album")
     public List<com.magnatune.eyecreate.companionformagnatune.model.xml.Album> albums;
 
 }

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/model/xml/Album.java

@@ -1,51 +1,50 @@
 package com.magnatune.eyecreate.companionformagnatune.model.xml;
 
-import org.simpleframework.xml.Element;
+import com.thoughtworks.xstream.annotations.XStreamAlias;
-import org.simpleframework.xml.ElementList;
+import com.thoughtworks.xstream.annotations.XStreamImplicit;
-import org.simpleframework.xml.Root;
+import com.thoughtworks.xstream.annotations.XStreamOmitField;
 
 import java.util.Date;
 import java.util.List;
 
-@Root(name="Album",strict = false)
+@XStreamAlias("Album")
 public class Album {
 
-    @Element
+    
     public String artist;
 
-    @Element
+    
     public String artistdesc;
 
-    @Element
+    
     public String cover_small;
 
-    @Element
+    
     public String artistphoto;
 
-    @Element
+    
     public String albumname;
 
-    @Element
+    
     public int year;
 
-    @Element(required = false)
     public String album_notes;
 
-    @Element
+    
     public String mp3genre;
 
-    @Element
+    
     public String home;
 
-    @Element
+    
     public String magnatunegenres;
 
-    @Element
+    
     public Date launchdate;
 
-    @Element
+    
     public String albumsku;
 
-    @ElementList(inline=true,type=Track.class)
+    @XStreamImplicit(itemFieldName = "Track")
     public List<Track> tracks;
 }

app/src/main/java/com/magnatune/eyecreate/companionformagnatune/model/xml/Track.java

@@ -1,49 +1,48 @@
 package com.magnatune.eyecreate.companionformagnatune.model.xml;
 
-import org.simpleframework.xml.Element;
+import com.thoughtworks.xstream.annotations.XStreamAlias;
-import org.simpleframework.xml.Root;
 
-@Root(name="Track",strict = false)
+@XStreamAlias("Track")
 public class Track {
-    @Element
+    
     public String artist;
 
-    @Element
+    
     public String artistbio;
 
-    @Element
+    
     public String albumname;
 
-    @Element
+    
     public String trackname;
 
-    @Element
+    
     public int tracknum;
 
-    @Element
+    
     public int year;
 
-    @Element
+    
     public String mp3genre;
 
-    @Element
+    
     public String magnatunegenres;
 
-    @Element
+    
     public String license;
 
-    @Element
+    
     public long seconds;
 
-    @Element
+    
     public String url;
 
-    @Element
+    
     public String mp3lofi;
 
-    @Element
+    
     public String oggurl;
 
-    @Element
+    
     public String isrc;
 }