[WEEX-485][Android] fix slider bug: scroll when scrollable=false make index not work

Author: luckybilly

android/sdk/src/main/java/com/taobao/weex/ui/view/WXCircleViewPager.java

@@ -138,6 +138,11 @@ public int superGetCurrentItem() {
     return super.getCurrentItem();
   }
 
+  @Override
+  public boolean onInterceptTouchEvent(MotionEvent ev) {
+    return scrollable && super.onInterceptTouchEvent(ev);
+  }
+
   @Override
   public boolean onTouchEvent(MotionEvent ev) {
     if(!scrollable) {