kyleada · March 17, 2016 08:52 · Jul 8, 2014
diff --git a/ArrayAdapter.java b/ArrayAdapter.java
@@ -0,0 +1,93 @@
+import android.support.v7.widget.RecyclerView;
+
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.List;
+
+/**
+ * Created by pascalwelsch on 04.07.14.
+ */
+public abstract class ArrayAdapter<T, VH extends RecyclerView.ViewHolder>
+        extends RecyclerView.Adapter<VH> {
+
+    private List<T> mObjects;
+
+    public ArrayAdapter(final List<T> objects) {
+        mObjects = objects;
+    }
+
+    /**
+     * Adds the specified object at the end of the array.
+     *
+     * @param object The object to add at the end of the array.
+     */
+    public void add(final T object) {
+        mObjects.add(object);
+        notifyItemInserted(getItemCount() - 1);
+    }
+
+    /**
+     * Remove all elements from the list.
+     */
+    public void clear() {
+        final int size = getItemCount();
+        mObjects.clear();
+        notifyItemRangeRemoved(0, size);
+    }
+
+    @Override
+    public int getItemCount() {
+        return mObjects.size();
+    }
+
+    public T getItem(final int position) {
+        return mObjects.get(position);
+    }
+
+    public long getItemId(final int position) {
+        return position;
+    }
+
+    /**
+     * Returns the position of the specified item in the array.
+     *
+     * @param item The item to retrieve the position of.
+     * @return The position of the specified item.
+     */
+    public int getPosition(final T item) {
+        return mObjects.indexOf(item);
+    }
+
+    /**
+     * Inserts the specified object at the specified index in the array.
+     *
+     * @param object The object to insert into the array.
+     * @param index  The index at which the object must be inserted.
+     */
+    public void insert(final T object, int index) {
+        mObjects.add(index, object);
+        notifyItemInserted(index);
+
+    }
+
+    /**
+     * Removes the specified object from the array.
+     *
+     * @param object The object to remove.
+     */
+    public void remove(T object) {
+        final int position = getPosition(object);
+        mObjects.remove(object);
+        notifyItemRemoved(position);
+    }
+
+    /**
+     * Sorts the content of this adapter using the specified comparator.
+     *
+     * @param comparator The comparator used to sort the objects contained in this adapter.
+     */
+    public void sort(Comparator<? super T> comparator) {
+        Collections.sort(mObjects, comparator);
+        notifyItemRangeChanged(0, getItemCount());
+    }
+}