modify drop_down_list_footer_button

Author: Trinea

res/layout/drop_down_list_footer.xml

@@ -17,8 +17,9 @@
         android:id="@+id/drop_down_list_footer_button"
         style="@style/drop_down_list_footer_font_style"
         android:layout_width="wrap_content"
-        android:layout_height="match_parent"
+        android:layout_height="@dimen/drop_down_list_footer_button_height"
         android:layout_centerInParent="true"
+        android:layout_marginLeft="@dimen/drop_down_list_footer_button_margin_left"
         android:background="@android:color/transparent"
         android:gravity="center"
         android:text="@string/drop_down_list_footer_default_text" />

res/values/dimens.xml

@@ -5,5 +5,7 @@
     <dimen name="drop_down_list_header_release_min_distance">20dp</dimen>
     <dimen name="drop_down_list_header_progress_bar_height">36dp</dimen>
     <dimen name="drop_down_list_footer_progress_bar_height">36dp</dimen>
+    <dimen name="drop_down_list_footer_button_margin_left">8dp</dimen>
+    <dimen name="drop_down_list_footer_button_height">48dp</dimen>
 
 </resources>

src/cn/trinea/android/common/util/ListUtils.java

@@ -13,6 +13,10 @@ public class ListUtils {
     /** default join separator **/
     public static final String DEFAULT_JOIN_SEPARATOR = ",";
 
+    public static <V> int getSize(List<V> sourceList) {
+        return ListUtils.isEmpty(sourceList) ? 0 : sourceList.size();
+    }
+
     /**
      * is null or its size is 0
      *