diff --git a/example/qml/App.qml b/example/qml/App.qml
index 1550ac96..f0af5371 100644
--- a/example/qml/App.qml
+++ b/example/qml/App.qml
@@ -19,6 +19,7 @@ Window {
             }
             request.headers["token"] ="yyds"
             request.headers["os"] ="pc"
+            console.debug(JSON.stringify(request))
             return request
         }
     }
diff --git a/example/qml/window/MainWindow.qml b/example/qml/window/MainWindow.qml
index c2918f09..921c166e 100644
--- a/example/qml/window/MainWindow.qml
+++ b/example/qml/window/MainWindow.qml
@@ -166,7 +166,7 @@ CustomWindow {
                 //Stack模式，每次切换都会将页面压入栈中，随着栈的页面增多，消耗的内存也越多，内存消耗多就会卡顿，这时候就需要按返回将页面pop掉，释放内存。该模式可以配合FluPage中的launchMode属性，设置页面的启动模式
                 pageMode: FluNavigationViewType.Stack
                 //NoStack模式，每次切换都会销毁之前的页面然后创建一个新的页面，只需消耗少量内存（推荐）
-//                pageMode: FluNavigationViewType.NoStack
+                //                pageMode: FluNavigationViewType.NoStack
                 items: ItemsOriginal
                 footerItems:ItemsFooter
                 topPadding:FluTools.isMacos() ? 20 : 5
@@ -201,15 +201,27 @@ CustomWindow {
         }
     }
 
-    CircularReveal{
-        id:reveal
-        target:window.contentItem
-        anchors.fill: parent
-        onImageChanged: {
-            changeDark()
+    Component{
+        id:com_reveal
+        CircularReveal{
+            id:reveal
+            target:window.contentItem
+            anchors.fill: parent
+            onAnimationFinished:{
+                //动画结束后释放资源
+                loader_reveal.sourceComponent = undefined
+            }
+            onImageChanged: {
+                changeDark()
+            }
         }
     }
 
+    Loader{
+        id:loader_reveal
+        anchors.fill: parent
+    }
+
     function distance(x1,y1,x2,y2){
         return Math.sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2))
     }
@@ -218,11 +230,13 @@ CustomWindow {
         if(FluTools.isMacos() || !FluTheme.enableAnimation){
             changeDark()
         }else{
+            loader_reveal.sourceComponent = com_reveal
             var target = window.contentItem
             var pos = button.mapToItem(target,0,0)
             var mouseX = pos.x
             var mouseY = pos.y
             var radius = Math.max(distance(mouseX,mouseY,0,0),distance(mouseX,mouseY,target.width,0),distance(mouseX,mouseY,0,target.height),distance(mouseX,mouseY,target.width,target.height))
+            var reveal = loader_reveal.item
             reveal.start(reveal.width*Screen.devicePixelRatio,reveal.height*Screen.devicePixelRatio,Qt.point(mouseX,mouseY),radius)
         }
     }
@@ -245,5 +259,4 @@ CustomWindow {
         }
     }
 
-
 }
diff --git a/example/src/component/CircularReveal.cpp b/example/src/component/CircularReveal.cpp
index 29464197..48aef669 100644
--- a/example/src/component/CircularReveal.cpp
+++ b/example/src/component/CircularReveal.cpp
@@ -6,11 +6,12 @@
 CircularReveal::CircularReveal(QQuickItem* parent) : QQuickPaintedItem(parent)
 {
     setVisible(false);
-    _anim = new QPropertyAnimation(this, "radius", this);
-    _anim->setDuration(333);
-    _anim->setEasingCurve(QEasingCurve::OutCubic);
-    connect(_anim, &QPropertyAnimation::finished,this,[=](){
+    _anim.setDuration(333);
+    _anim.setEasingCurve(QEasingCurve::OutCubic);
+    connect(&_anim, &QPropertyAnimation::finished,this,[=](){
+        update();
         setVisible(false);
+        Q_EMIT animationFinished();
     });
     connect(this,&CircularReveal::radiusChanged,this,[=](){
         update();
@@ -31,8 +32,8 @@ void CircularReveal::paint(QPainter* painter)
 }
 
 void CircularReveal::start(int w,int h,const QPoint& center,int radius){
-    _anim->setStartValue(0);
-    _anim->setEndValue(radius);
+    _anim.setStartValue(0);
+    _anim.setEndValue(radius);
     _center = center;
     _grabResult = _target->grabToImage(QSize(w,h));
     connect(_grabResult.data(), &QQuickItemGrabResult::ready, this, &CircularReveal::handleGrabResult);
@@ -43,5 +44,5 @@ void CircularReveal::handleGrabResult(){
     update();
     setVisible(true);
     Q_EMIT imageChanged();
-    _anim->start();
+    _anim.start();
 }
diff --git a/example/src/component/CircularReveal.h b/example/src/component/CircularReveal.h
index 5084b165..9262b044 100644
--- a/example/src/component/CircularReveal.h
+++ b/example/src/component/CircularReveal.h
@@ -18,10 +18,11 @@ public:
     void paint(QPainter* painter) override;
     Q_INVOKABLE void start(int w,int h,const QPoint& center,int radius);
     Q_SIGNAL void imageChanged();
+    Q_SIGNAL void animationFinished();
     Q_SLOT void handleGrabResult();
 private:
     QImage _source;
-    QPropertyAnimation* _anim;
+    QPropertyAnimation _anim = QPropertyAnimation(this, "radius", this);
     QPoint _center;
     QSharedPointer<QQuickItemGrabResult>  _grabResult;
 };
diff --git a/src/FluHttp.cpp b/src/FluHttp.cpp
index 47f88543..a18a76c4 100644
--- a/src/FluHttp.cpp
+++ b/src/FluHttp.cpp
@@ -204,13 +204,11 @@ void FluHttp::download(QString path,QVariantMap params,QVariantMap headers){
         addQueryParam(&url,data["params"].toMap());
         QNetworkRequest request(url);
         addHeaders(&request,data["headers"].toMap());
-        QFile *file = new QFile(path);
+        QSharedPointer<QFile> file(new QFile(path));
         QIODevice::OpenMode mode = QIODevice::WriteOnly|QIODevice::Truncate;
         if (!file->open(mode))
         {
             Q_EMIT error(-1,QString("Url: %1 %2 Non-Writable").arg(request.url().toString(),file->fileName()));
-            file->deleteLater();
-            file = nullptr;
             Q_EMIT finish();
             return;
         }
@@ -234,9 +232,7 @@ void FluHttp::download(QString path,QVariantMap params,QVariantMap headers){
         }
         _cache.removeOne(reply);
         file->close();
-        file->deleteLater();
         reply->deleteLater();
-        file = nullptr;
         reply = nullptr;
         Q_EMIT finish();
     });