fix(android): fix drag and drop issues (#13387)

* fix: allow drop-and-drop with single touch

* chore(android): change opacity on drag (parity with iOS)

* fix: remove typo

* chore: add null-check

* chore: remove custom opacity

* fix: remove unused imports

* chore(android): add spacing to drag icon

android/modules/ui/res/drawable/titanium_icon_drag.xml

@@ -1,10 +1,10 @@
 <vector xmlns:android="http://schemas.android.com/apk/res/android"
-android:width="24dp"
-android:height="24dp"
-android:viewportWidth="24"
-android:viewportHeight="24"
-android:tint="#C3C3C3">
-<path
-    android:fillColor="@android:color/black"
-    android:pathData="M20,9H4v2h16V9zM4,15h16v-2H4V15z"/>
+	android:width="24dp"
+	android:height="34dp"
+	android:tint="#C3C3C3"
+	android:viewportWidth="24"
+	android:viewportHeight="34">
+	<path
+		android:fillColor="@android:color/black"
+		android:pathData="M 20 14 L 4 14 L 4 16 L 20 16 Z M 4 20 L 20 20 L 20 18 L 4 18 Z" />
 </vector>

android/modules/ui/src/java/ti/modules/titanium/ui/widget/listview/ListViewHolder.java

@@ -27,11 +27,14 @@
 import android.graphics.drawable.PaintDrawable;
 import android.os.Build;
 import android.util.TypedValue;
+import android.view.MotionEvent;
 import android.view.View;
 import android.view.ViewGroup;
 import android.widget.ImageView;
 import android.widget.TextView;
 
+import androidx.recyclerview.widget.RecyclerView;
+
 import java.lang.ref.WeakReference;
 
 import ti.modules.titanium.ui.UIModule;
@@ -157,6 +160,23 @@ public void bind(final ListItemProxy proxy, final boolean selected)
 		if (isEditing && canMove) {
 			this.rightImage.setImageDrawable(dragDrawable);
 			this.rightImage.setVisibility(View.VISIBLE);
+
+			RecyclerView.ViewHolder mViewHolder = this;
+
+			this.rightImage.setOnTouchListener(new View.OnTouchListener()
+			{
+				@Override
+				public boolean onTouch(View view, MotionEvent motionEvent)
+				{
+					if (motionEvent.getActionMasked() == MotionEvent.ACTION_DOWN) {
+						TiListView listView = listViewProxy.getListView();
+						listView.startDragging(mViewHolder);
+					}
+					return false;
+				}
+			});
+		} else {
+			this.rightImage.setOnTouchListener(null);
 		}
 
 		if (proxy != null) {

android/modules/ui/src/java/ti/modules/titanium/ui/widget/listview/ListViewProxy.java

@@ -312,7 +312,7 @@ public int getIndexOfSection(ListSectionProxy section)
 	 *
 	 * @return TiListView
 	 */
-	private TiListView getListView()
+	public TiListView getListView()
 	{
 		final TiUIListView view = (TiUIListView) this.view;
 

android/modules/ui/src/java/ti/modules/titanium/ui/widget/listview/TiListView.java

@@ -49,6 +49,7 @@ public class TiListView extends TiSwipeRefreshLayout implements OnSearchChangeLi
 	private final ListViewProxy proxy;
 	private final TiNestedRecyclerView recyclerView;
 	private final List<KrollDict> selectedItems = new ArrayList<>();
+	private final ItemTouchHelper itemTouchHelper;
 
 	private boolean hasLaidOutChildren = false;
 	private SelectionTracker tracker = null;
@@ -176,7 +177,7 @@ public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy)
 
 		// Create ItemTouchHelper for swipe-to-delete and move gestures.
 		final ItemTouchHandler itemTouchHandler = new ItemTouchHandler(this.adapter, this.proxy, this.recyclerView);
-		final ItemTouchHelper itemTouchHelper = new ItemTouchHelper(itemTouchHandler);
+		itemTouchHelper = new ItemTouchHelper(itemTouchHandler);
 		itemTouchHelper.attachToRecyclerView(this.recyclerView);
 
 		// Fire `postlayout` on layout changes.
@@ -606,6 +607,16 @@ public void setSeparator(int color, int height)
 		this.recyclerView.invalidate();
 	}
 
+	/**
+	 * Starts dragging programatically.
+	 *
+	 * @param vHolder The dedicated view holder
+	 */
+	public void startDragging(RecyclerView.ViewHolder vHolder)
+	{
+		itemTouchHelper.startDrag(vHolder);
+	}
+
 	/**
 	 * Set row separator drawable.
 	 *