fixed 676334b9 from https://gitee.com/openharmony/graphic_ui/pulls/313

IssueNo:#I423M9
Description:fix scroll bar bugs
Sig:graphic
Feature or Bugfix:Bugfix
Binary Source:No
Signed-off-by: NYueBiang <suyue7@huawei.com>

frameworks/components/root_view.cpp

@@ -639,6 +639,11 @@ void RootView::DrawTop(UIView* view, const Rect& rect)
         }
         stackCount = 0;
         curView = par->GetNextSibling();
+        if (enableAnimator) {
+            par->OnPostDraw(*dc_.mapBufferInfo, curViewRect);
+        } else {
+            par->OnPostDraw(*dc_.bufferInfo, curViewRect);
+        }
         par = par->GetParent();
     }
 }

frameworks/components/ui_arc_scroll_bar.cpp

@@ -21,14 +21,13 @@
 namespace {
 constexpr uint16_t START_ANGLE_IN_DEGREE = 60;
 constexpr uint16_t END_ANGLE_IN_DEGREE = 120;
-constexpr uint16_t SCROLL_BAR_WIDTH = 4;
 constexpr uint16_t SCROLL_BAR_MIN_ARC = 10;
 } // namespace
 
 namespace OHOS {
 UIArcScrollBar::UIArcScrollBar()
     : radius_(0),
-      width_(SCROLL_BAR_WIDTH),
+      width_(0),
       startAngle_(START_ANGLE_IN_DEGREE),
       endAngle_(END_ANGLE_IN_DEGREE),
       center_({0, 0}) {}
@@ -67,7 +66,7 @@ void UIArcScrollBar::DrawForeground(BufferInfo& gfxDstBuffer, const Rect& invali
     }
 
     ArcInfo arcInfo = {0};
-    arcInfo.radius = radius_;
+    arcInfo.radius = (radius_ > 0) ? (radius_ - 1) : 0;
     arcInfo.center = center_;
     arcInfo.startAngle = MATH_MAX(startAngle, START_ANGLE_IN_DEGREE);
     arcInfo.endAngle = MATH_MIN(endAngle, END_ANGLE_IN_DEGREE);

frameworks/components/ui_list.cpp

@@ -44,7 +44,13 @@ UIList::Recycle::~Recycle()
 void UIList::Recycle::MesureAdapterRelativeRect()
 {
     uint16_t i = 0;
+    if (listView_ == nullptr) {
+        return;
+    }
     UIView* childHead = listView_->childrenHead_;
+    if (childHead == nullptr) {
+        return;
+    }
     uint16_t idx = childHead->GetViewIndex();
     if (listView_->direction_ == VERTICAL) {
         int32_t height = 0;