diff --git a/src/gui/animation/animationhandler.cc b/src/gui/animation/animationhandler.cc
index 919d60d2..6947dc62 100755
--- a/src/gui/animation/animationhandler.cc
+++ b/src/gui/animation/animationhandler.cc
@@ -29,6 +29,7 @@ void AnimationHandler::MyFrameCallbackProvider::setFrameDelay(long delay) {
 AnimationHandler::AnimationHandler(){
     mProvider  = nullptr;
     mListDirty = false;
+	mInLooper = false;
     mFrameCallback=std::bind(&AnimationHandler::doFrame,this,std::placeholders::_1);
 }
 
@@ -71,8 +72,8 @@ void AnimationHandler::doAnimationFrame(long frameTime){
 }
 
 bool AnimationHandler::isCallbackDue(AnimationFrameCallback* callback, long currentTime){
-    auto it=mDelayedCallbackStartTime.find(callback);
-    if(it==mDelayedCallbackStartTime.end())return true;
+    auto it = mDelayedCallbackStartTime.find(callback);
+    if(it == mDelayedCallbackStartTime.end())return true;
     if (it->second < currentTime) {
         mDelayedCallbackStartTime.erase(it);
         return true;
@@ -81,9 +82,9 @@ bool AnimationHandler::isCallbackDue(AnimationFrameCallback* callback, long curr
 }
 
 void AnimationHandler::commitAnimationFrame(AnimationFrameCallback* callback, long frameTime){
-    auto it=mDelayedCallbackStartTime.find(callback);
-    auto itc=std::find(mCommitCallbacks.begin(),mCommitCallbacks.end(),callback);
-    if (it==mDelayedCallbackStartTime.end() && itc!=mCommitCallbacks.end()) {
+    auto it = mDelayedCallbackStartTime.find(callback);
+    auto itc = std::find(mCommitCallbacks.begin(),mCommitCallbacks.end(),callback);
+    if (it == mDelayedCallbackStartTime.end() && itc!=mCommitCallbacks.end()) {
         callback->commitAnimationFrame(frameTime);/*commitAnimationFrame mybe call removeCallback!!!*/
         mCommitCallbacks.erase(itc);
     }
@@ -102,6 +103,10 @@ void AnimationHandler::cleanUpList(){
 
 static NeverDestroyed<AnimationHandler>mInst;
 AnimationHandler&AnimationHandler::getInstance(){
+    if(!mInst->mInLooper){
+        Looper::getDefault()->addEventHandler(mInst.get());
+		mInst->mInLooper = true;
+    }
     return *mInst;
 }
 
diff --git a/src/gui/animation/animationhandler.h b/src/gui/animation/animationhandler.h
index 1d25e352..e7c917ca 100755
--- a/src/gui/animation/animationhandler.h
+++ b/src/gui/animation/animationhandler.h
@@ -32,6 +32,7 @@ private:
         void setFrameDelay(long delay)override;
     };
     bool mListDirty;
+	bool mInLooper;
     AnimationFrameCallbackProvider* mProvider;
     Choreographer::FrameCallback mFrameCallback;
     std::list<AnimationFrameCallback*> mAnimationCallbacks;
diff --git a/src/gui/core/looper.cc b/src/gui/core/looper.cc
index 4a504a2f..47a84eee 100755
--- a/src/gui/core/looper.cc
+++ b/src/gui/core/looper.cc
@@ -320,11 +320,19 @@ int Looper::pollInner(int timeoutMillis) {
         EventHandler*es=(*it);
         if(es&&((es->mFlags&1)==0)&&(es->checkEvents()>0)){ 
             es->handleEvents();
-	    if(es->mFlags&1) it = mEventHandlers.erase(it);
-	    if((es->mFlags&3)==3) delete es;//EventHandler owned by looper must be freed here
+            //may be EventHandler::handleEvents will destroy itself,recheck the flags
+            if((es->mFlags&1)==1) it = mEventHandlers.erase(it);
+            if((es->mFlags&3)==3) delete es;//make EventHandler::handleEvents can destroy itself
+            //EventHandler owned by looper must be freed here
+        }
+    }
+    for(auto it=mEventHandlers.begin();it!=mEventHandlers.end();it++){
+        EventHandler*es=(*it);
+        if((es->mFlags&3)==3){
+            it = mEventHandlers.erase(it);
+            delete es;//EventHandler owned by looper must be freed here
         }
     }
-    //removeEventHandlers();
     long elapsedMillis = SystemClock::uptimeMillis()-t1;
 
     // Acquire lock.
@@ -380,7 +388,6 @@ int Looper::pollAll(int timeoutMillis, int* outFd, int* outEvents, void** outDat
         return result;
     } else {
         nsecs_t endTime = SystemClock::uptimeMillis() + timeoutMillis;
-
         for (;;) {
             int result = pollOnce(timeoutMillis, outFd, outEvents, outData);
             if (result != POLL_CALLBACK) {
@@ -621,7 +628,7 @@ void Looper::removeHandler(MessageHandler*handler){
     for(auto it=mHandlers.begin();it!=mHandlers.end();it++){
         if((*it)==handler){
             handler->mFlags|=1;
-	    if((handler->mFlags&2)==0)//handler is not owned by looper,erase at once
+            if((handler->mFlags&2)==0)//handler is not owned by looper,erase at once
                 mHandlers.erase(it);
             break;
         }
@@ -630,7 +637,6 @@ void Looper::removeHandler(MessageHandler*handler){
 
 void Looper::addEventHandler(const EventHandler*handler){
     mEventHandlers.insert(mEventHandlers.begin(),(EventHandler*)handler);
-    LOGE_IF(mEventHandlers.size()>32,"Too many eventhandlers %d",mEventHandlers.size());
 }
 
 void Looper::removeEventHandler(const EventHandler*handler){
diff --git a/src/gui/core/uieventsource.cc b/src/gui/core/uieventsource.cc
index 831ebb0f..636a5b00 100755
--- a/src/gui/core/uieventsource.cc
+++ b/src/gui/core/uieventsource.cc
@@ -49,7 +49,7 @@ int UIEventSource::handleRunnables(){
             RUNNER runner = mRunnables.front();
             if(runner.time > nowms)break;
             mRunnables.pop_front();
-            if(runner.run)runner.run();
+            if(runner.run&&(runner.removed==false))runner.run();
             count++;
         }
         if(((mFlags&1)==0) && mAttachedView->isDirty() && mAttachedView->getVisibility()==View::VISIBLE){
diff --git a/src/gui/view/view.cc b/src/gui/view/view.cc
index a9387288..649ccc0d 100755
--- a/src/gui/view/view.cc
+++ b/src/gui/view/view.cc
@@ -381,11 +381,6 @@ View::~View(){
     mViewCount --;
     LOGD_IF(View::VIEW_DEBUG||(mViewCount>1000),"%p:%d mViewCount=%d",this,mID,mViewCount);
 
-    removeTapCallback();
-    removeLongPressCallback();
-    removePerformClickCallback();
-    removeUnsetPressCallback();
-
     delete mScrollCache;
     mScrollCache = nullptr;
     if(mParent)
@@ -1411,6 +1406,7 @@ void View::onDetachedFromWindowInternal() {
     mPrivateFlags3 &= ~PFLAG3_IS_LAID_OUT;
     mPrivateFlags3 &= ~PFLAG3_TEMPORARY_DETACH;
 
+    removeTapCallback();
     removeUnsetPressCallback();
     removeLongPressCallback();
     removePerformClickCallback();
diff --git a/src/gui/widget/abslistview.cc b/src/gui/widget/abslistview.cc
index 63fda809..98bbc6aa 100755
--- a/src/gui/widget/abslistview.cc
+++ b/src/gui/widget/abslistview.cc
@@ -118,12 +118,6 @@ AbsListView::~AbsListView() {
         mVelocityTracker->recycle();
         mVelocityTracker = nullptr;
     }
-    if(mPerformClick)mPerformClick->removeCallbacks();
-    if(mPendingCheckForLongPress)mPendingCheckForLongPress->removeCallbacks();
-    if(mPendingCheckForTap)mPendingCheckForTap->removeCallbacks();
-    if(mPendingCheckForKeyLongPress)mPendingCheckForKeyLongPress->removeCallbacks();
-	if(mFlingRunnable)mFlingRunnable->removeCallbacks();
-	
     delete mSelector;
     delete mFastScroll;
     delete mRecycler;
@@ -1942,6 +1936,11 @@ void AbsListView::onAttachedToWindow() {
 void AbsListView::onDetachedFromWindow() {
     AdapterView::onDetachedFromWindow();
 
+    if(mPerformClick)mPerformClick->removeCallbacks();
+    if(mPendingCheckForLongPress)mPendingCheckForLongPress->removeCallbacks();
+    if(mPendingCheckForTap)mPendingCheckForTap->removeCallbacks();
+    if(mPendingCheckForKeyLongPress)mPendingCheckForKeyLongPress->removeCallbacks();
+    if(mFlingRunnable)mFlingRunnable->removeCallbacks();
     mIsDetaching = true;
 
     // Dismiss the popup in case onSaveInstanceState() was not invoked