Missed on file. Sorry...

src/org/r3pek/pharmacies/backup/WrapBackupManager.java

@@ -0,0 +1,21 @@
+package org.r3pek.pharmacies.backup;
+
+import android.app.backup.BackupManager;
+
+public class WrapBackupManager {
+    /* class initialization fails when this throws an exception */
+    static {
+        try {
+            Class.forName("android.app.backup.BackupManager");
+        } catch (Exception ex) {
+            throw new RuntimeException(ex);
+        }
+    }
+    
+    /* calling here forces class initialization */
+    public static void isAvailable() { }
+    
+    public static void dataChanged(String packageName) {
+        BackupManager.dataChanged(packageName);
+    }
+}