Add LinearLayout#getGravity

Change-Id: I290790b8e84e14f2702c6fc9c679b1c435cc13a8

api/current.txt

@@ -45678,6 +45678,7 @@ package android.widget {
     method public int getBaselineAlignedChildIndex();
     method public android.graphics.drawable.Drawable getDividerDrawable();
     method public int getDividerPadding();
+    method public int getGravity();
     method public int getOrientation();
     method public int getShowDividers();
     method public float getWeightSum();

api/system-current.txt

@@ -48384,6 +48384,7 @@ package android.widget {
     method public int getBaselineAlignedChildIndex();
     method public android.graphics.drawable.Drawable getDividerDrawable();
     method public int getDividerPadding();
+    method public int getGravity();
     method public int getOrientation();
     method public int getShowDividers();
     method public float getWeightSum();

api/test-current.txt

@@ -45694,6 +45694,7 @@ package android.widget {
     method public int getBaselineAlignedChildIndex();
     method public android.graphics.drawable.Drawable getDividerDrawable();
     method public int getDividerPadding();
+    method public int getGravity();
     method public int getOrientation();
     method public int getShowDividers();
     method public float getWeightSum();

core/java/android/widget/LinearLayout.java

@@ -1781,6 +1781,16 @@ public class LinearLayout extends ViewGroup {
         }
     }
 
+    /**
+     * Returns the current gravity. See {@link android.view.Gravity}
+     *
+     * @return the current gravity.
+     * @see #setGravity
+     */
+    public int getGravity() {
+        return mGravity;
+    }
+
     @android.view.RemotableViewMethod
     public void setHorizontalGravity(int horizontalGravity) {
         final int gravity = horizontalGravity & Gravity.RELATIVE_HORIZONTAL_GRAVITY_MASK;