When an app is chosen in All Apps, tapping a workspace screen adds it to that screen.

src/com/android/launcher2/PagedView.java

@@ -1009,7 +1009,7 @@ public abstract class PagedView extends ViewGroup {
         mChoiceMode = mode;
     }
 
-    protected void endChoiceMode() {
+    public void endChoiceMode() {
         if (!isChoiceMode(CHOICE_MODE_NONE)) {
             mChoiceMode = CHOICE_MODE_NONE;
             resetCheckedGrandchildren();
@@ -1059,6 +1059,14 @@ public abstract class PagedView extends ViewGroup {
         return null;
     }
 
+    public Object getChosenItem() {
+        View checkedView = (View) getSingleCheckedGrandchild();
+        if (checkedView != null) {
+            return checkedView.getTag();
+        }
+        return null;
+    }
+
     protected void resetCheckedGrandchildren() {
         // loop through children, and set all of their children to _not_ be checked
         final ArrayList<Checkable> checked = getCheckedGrandchildren();