diff --git a/core/java/com/android/internal/policy/DividerSnapAlgorithm.java b/core/java/com/android/internal/policy/DividerSnapAlgorithm.java
index 669e1efb92491..b8bc1618b3a3e 100644
--- a/core/java/com/android/internal/policy/DividerSnapAlgorithm.java
+++ b/core/java/com/android/internal/policy/DividerSnapAlgorithm.java
@@ -330,6 +330,14 @@ public class DividerSnapAlgorithm {
         return snapTarget;
     }
 
+    public boolean isFirstSplitTargetAvailable() {
+        return mFirstSplitTarget != mMiddleTarget;
+    }
+
+    public boolean isLastSplitTargetAvailable() {
+        return mLastSplitTarget != mMiddleTarget;
+    }
+
     /**
      * Cycles through all non-dismiss targets with a stepping of {@param increment}. It moves left
      * if {@param increment} is negative and moves right otherwise.
diff --git a/packages/SystemUI/res/values/ids.xml b/packages/SystemUI/res/values/ids.xml
index 9697ea6f37880..94d79f27e67f9 100644
--- a/packages/SystemUI/res/values/ids.xml
+++ b/packages/SystemUI/res/values/ids.xml
@@ -63,9 +63,10 @@
     <item type="id" name="is_clicked_heads_up_tag" />
 
     <!-- Accessibility actions for the docked stack divider -->
-    <item type="id" name="action_move_left" />
-    <item type="id" name="action_move_right" />
-    <item type="id" name="action_move_up" />
-    <item type="id" name="action_move_down" />
+    <item type="id" name="action_move_tl_full" />
+    <item type="id" name="action_move_tl_70" />
+    <item type="id" name="action_move_tl_50" />
+    <item type="id" name="action_move_tl_30" />
+    <item type="id" name="action_move_rb_full" />
 </resources>
 
diff --git a/packages/SystemUI/res/values/strings.xml b/packages/SystemUI/res/values/strings.xml
index a03aa28c47c57..8e3ea4c946e07 100644
--- a/packages/SystemUI/res/values/strings.xml
+++ b/packages/SystemUI/res/values/strings.xml
@@ -1580,17 +1580,27 @@
     <!-- Accessibility label for the divider that separates the windows in split-screen mode [CHAR LIMIT=NONE] -->
     <string name="accessibility_divider">Split-screen divider</string>
 
-    <!-- Accessibility action for moving down the docked stack divider [CHAR LIMIT=NONE] -->
-    <string name="accessibility_action_divider_move_down">Move down</string>
+    <!-- Accessibility action for moving docked stack divider to make the left screen full screen [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_left_full">Left full screen</string>
+    <!-- Accessibility action for moving docked stack divider to make the left screen 70% [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_left_70">Left 70%</string>
+    <!-- Accessibility action for moving docked stack divider to make the left screen 50% [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_left_50">Left 50%</string>
+    <!-- Accessibility action for moving docked stack divider to make the left screen 30% [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_left_30">Left 30%</string>
+    <!-- Accessibility action for moving docked stack divider to make the right screen full screen [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_right_full">Right full screen</string>
 
-    <!-- Accessibility action for moving down the docked stack divider [CHAR LIMIT=NONE] -->
-    <string name="accessibility_action_divider_move_up">Move up</string>
-
-    <!-- Accessibility action for moving down the docked stack divider [CHAR LIMIT=NONE] -->
-    <string name="accessibility_action_divider_move_left">Move left</string>
-
-    <!-- Accessibility action for moving down the docked stack divider [CHAR LIMIT=NONE] -->
-    <string name="accessibility_action_divider_move_right">Move right</string>
+    <!-- Accessibility action for moving docked stack divider to make the top screen full screen [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_top_full">Top full screen</string>
+    <!-- Accessibility action for moving docked stack divider to make the top screen 70% [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_top_70">Top 70%</string>
+    <!-- Accessibility action for moving docked stack divider to make the top screen 50% [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_top_50">Top 50%</string>
+    <!-- Accessibility action for moving docked stack divider to make the top screen 30% [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_top_30">Top 30%</string>
+    <!-- Accessibility action for moving docked stack divider to make the bottom screen full screen [CHAR LIMIT=NONE] -->
+    <string name="accessibility_action_divider_bottom_full">Bottom full screen</string>
 
     <!-- Accessibility description of a QS tile while editing positions [CHAR LIMIT=NONE] -->
     <string name="accessibility_qs_edit_tile_label">Position <xliff:g id="position" example="2">%1$d</xliff:g>, <xliff:g id="tile_name" example="Wi-Fi">%2$s</xliff:g>. Double tap to edit.</string>
diff --git a/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java b/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java
index 67c4008b4dc6c..277c60bbb6b64 100644
--- a/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java
+++ b/packages/SystemUI/src/com/android/systemui/stackdivider/DividerView.java
@@ -154,31 +154,62 @@ public class DividerView extends FrameLayout implements OnTouchListener,
         public void onInitializeAccessibilityNodeInfo(View host, AccessibilityNodeInfo info) {
             super.onInitializeAccessibilityNodeInfo(host, info);
             if (isHorizontalDivision()) {
-                info.addAction(new AccessibilityAction(R.id.action_move_up,
-                        mContext.getString(R.string.accessibility_action_divider_move_up)));
-                info.addAction(new AccessibilityAction(R.id.action_move_down,
-                        mContext.getString(R.string.accessibility_action_divider_move_down)));
+                info.addAction(new AccessibilityAction(R.id.action_move_tl_full,
+                        mContext.getString(R.string.accessibility_action_divider_top_full)));
+                if (mSnapAlgorithm.isFirstSplitTargetAvailable()) {
+                    info.addAction(new AccessibilityAction(R.id.action_move_tl_70,
+                            mContext.getString(R.string.accessibility_action_divider_top_70)));
+                }
+                info.addAction(new AccessibilityAction(R.id.action_move_tl_50,
+                        mContext.getString(R.string.accessibility_action_divider_top_50)));
+                if (mSnapAlgorithm.isLastSplitTargetAvailable()) {
+                    info.addAction(new AccessibilityAction(R.id.action_move_tl_30,
+                            mContext.getString(R.string.accessibility_action_divider_top_30)));
+                }
+                info.addAction(new AccessibilityAction(R.id.action_move_rb_full,
+                        mContext.getString(R.string.accessibility_action_divider_bottom_full)));
             } else {
-                info.addAction(new AccessibilityAction(R.id.action_move_left,
-                        mContext.getString(R.string.accessibility_action_divider_move_left)));
-                info.addAction(new AccessibilityAction(R.id.action_move_right,
-                        mContext.getString(R.string.accessibility_action_divider_move_right)));
+                info.addAction(new AccessibilityAction(R.id.action_move_tl_full,
+                        mContext.getString(R.string.accessibility_action_divider_left_full)));
+                if (mSnapAlgorithm.isFirstSplitTargetAvailable()) {
+                    info.addAction(new AccessibilityAction(R.id.action_move_tl_70,
+                            mContext.getString(R.string.accessibility_action_divider_left_70)));
+                }
+                info.addAction(new AccessibilityAction(R.id.action_move_tl_50,
+                        mContext.getString(R.string.accessibility_action_divider_left_50)));
+                if (mSnapAlgorithm.isLastSplitTargetAvailable()) {
+                    info.addAction(new AccessibilityAction(R.id.action_move_tl_30,
+                            mContext.getString(R.string.accessibility_action_divider_left_30)));
+                }
+                info.addAction(new AccessibilityAction(R.id.action_move_rb_full,
+                        mContext.getString(R.string.accessibility_action_divider_right_full)));
             }
         }
 
         @Override
         public boolean performAccessibilityAction(View host, int action, Bundle args) {
-            if (action == R.id.action_move_up || action == R.id.action_move_down
-                    || action == R.id.action_move_left || action == R.id.action_move_right) {
-                int position = getCurrentPosition();
-                SnapTarget currentTarget = mSnapAlgorithm.calculateSnapTarget(
-                        position, 0 /* velocity */);
-                SnapTarget nextTarget =
-                        action == R.id.action_move_up || action == R.id.action_move_left
-                                ? mSnapAlgorithm.getPreviousTarget(currentTarget)
-                                : mSnapAlgorithm.getNextTarget(currentTarget);
+            int currentPosition = getCurrentPosition();
+            SnapTarget nextTarget = null;
+            switch (action) {
+                case R.id.action_move_tl_full:
+                    nextTarget = mSnapAlgorithm.getDismissEndTarget();
+                    break;
+                case R.id.action_move_tl_70:
+                    nextTarget = mSnapAlgorithm.getLastSplitTarget();
+                    break;
+                case R.id.action_move_tl_50:
+                    nextTarget = mSnapAlgorithm.getMiddleTarget();
+                    break;
+                case R.id.action_move_tl_30:
+                    nextTarget = mSnapAlgorithm.getFirstSplitTarget();
+                    break;
+                case R.id.action_move_rb_full:
+                    nextTarget = mSnapAlgorithm.getDismissStartTarget();
+                    break;
+            }
+            if (nextTarget != null) {
                 startDragging(true /* animate */, false /* touching */);
-                stopDragging(getCurrentPosition(), nextTarget, 250, Interpolators.FAST_OUT_SLOW_IN);
+                stopDragging(currentPosition, nextTarget, 250, Interpolators.FAST_OUT_SLOW_IN);
                 return true;
             }
             return super.performAccessibilityAction(host, action, args);