Created the class EarDataLoaderCommcare to load the data from CommCare.

app/src/main/java/com/aluxoft/earrecognition/loader/EarDataLoaderCommcare.java

+package com.aluxoft.earrecognition.loader;
+
+import android.app.Activity;
+import android.database.Cursor;
+import android.net.Uri;
+
+import com.aluxoft.earrecognition.common.EarData;
+
+/**
+ * Created by josejuliomartinez on 13/10/15.
+ */
+public class EarDataLoaderCommcare extends EarDataLoader {
+
+    @Override
+    public EarData load(Activity current) {
+
+        EarData data = new EarData();
+
+        Cursor c = current.managedQuery(Uri.parse("content://org.commcare.dalvik.case/casedb/case"), null, null, null, null);
+
+        if (c == null) {
+            return data;
+        }
+
+        while (c.moveToNext()) {
+            String caseId = c.getString(c.getColumnIndex("case_id"));
+            Uri uri = Uri.parse("content://org.commcare.dalvik.case/casedb/data/" + caseId);
+            Cursor caseCursor = current.managedQuery(uri, null, null, null, null);
+            if (caseCursor == null) {
+                continue;
+            }
+            while (caseCursor.moveToNext()) {
+                String gender = caseCursor.getString(caseCursor.getColumnIndex("gender"));
+                String features = caseCursor.getString(caseCursor.getColumnIndex("features"));
+                // Agregar el gender, caseid y features a data
+            }
+        }
+
+        return data;
+    }
+}