diff --git a/src/gui/widget/abslistview.cc b/src/gui/widget/abslistview.cc
index 639d855b..3a4790b1 100755
--- a/src/gui/widget/abslistview.cc
+++ b/src/gui/widget/abslistview.cc
@@ -1538,7 +1538,7 @@ bool  AbsListView::canScrollList(int direction) {
 }
 
 bool AbsListView::trackMotionScroll(int deltaY, int incrementalDeltaY) {
-    int childCount = getChildCount();
+    const int childCount = getChildCount();
     if (childCount == 0) {
         return true;
     }
@@ -3765,7 +3765,7 @@ void AbsListView::FlingRunnable::start(int initialVelocity) {
 
     mLV->mTouchMode = TOUCH_MODE_FLING;
     mSuppressIdleStateChangeCall = false;
-    mLV->postOnAnimation(*this);//mFlingRunnable);
+    mLV->postOnAnimation(*this);
     if (PROFILE_FLINGING) {
         if (!mLV->mFlingProfilingStarted) {
             mLV->mFlingProfilingStarted = true;
@@ -3781,7 +3781,7 @@ void AbsListView::FlingRunnable::startSpringback() {
     if (mScroller->springBack(0, mLV->mScrollY, 0, 0, 0, 0)) {
         mLV->mTouchMode = TOUCH_MODE_OVERFLING;
         mLV->invalidate();
-        mLV->postOnAnimation(*this);//mFlingRunnable);
+        mLV->postOnAnimation(*this);
     } else {
         mLV->mTouchMode = TOUCH_MODE_REST;
         mLV->reportScrollStateChange(OnScrollListener::SCROLL_STATE_IDLE);
@@ -3794,7 +3794,7 @@ void AbsListView::FlingRunnable::startOverfling(int initialVelocity) {
     mLV->mTouchMode = TOUCH_MODE_OVERFLING;
     mSuppressIdleStateChangeCall = false;
     mLV->invalidate();
-    mLV->postOnAnimation(*this);//mFlingRunnable);
+    mLV->postOnAnimation(*this);
 }
 
 void AbsListView::FlingRunnable::edgeReached(int delta) {
@@ -3811,7 +3811,7 @@ void AbsListView::FlingRunnable::edgeReached(int delta) {
             mLV->mPositionScroller->stop();
     }
     mLV->invalidate();
-    mLV->postOnAnimation(*this);//mFlingRunnable);
+    mLV->postOnAnimation(*this);
 }
 
 void AbsListView::FlingRunnable::startScroll(int distance, int duration, bool linear, bool suppressEndFlingStateChangeCall) {
@@ -3821,13 +3821,13 @@ void AbsListView::FlingRunnable::startScroll(int distance, int duration, bool li
     mScroller->startScroll(0, initialY, 0, distance, duration);
     mLV->mTouchMode = TOUCH_MODE_FLING;
     mSuppressIdleStateChangeCall = suppressEndFlingStateChangeCall;
-    mLV->postOnAnimation(*this);//mFlingRunnable);
+    mLV->postOnAnimation(*this);
 }
 
 void AbsListView::FlingRunnable::endFling() {
     mLV->mTouchMode = TOUCH_MODE_REST;
 
-    mLV->removeCallbacks(*this);//mFlingRunnable);
+    mLV->removeCallbacks(*this);
     mLV->removeCallbacks(mCheckFlywheel);
 
     if (!mSuppressIdleStateChangeCall)
@@ -3872,7 +3872,7 @@ void AbsListView::FlingRunnable::run() {
             View* firstView = mLV->getChildAt(0);
             mLV->mMotionViewOriginalTop = firstView->getTop();
             // Don't fling more than 1 screen
-            delta = std::min(mLV->getHeight() - mLV->mPaddingBottom - mLV->mPaddingTop - 1, delta);
+            delta = std::min(mLV->getHeight() - mLV->mPaddingTop - mLV->mPaddingBottom - 1, delta);
         } else {
             // List is moving towards the bottom. Use last view as mMotionPosition
             int offsetToLast = mLV->getChildCount() - 1;
@@ -3880,7 +3880,7 @@ void AbsListView::FlingRunnable::run() {
             View* lastView = mLV->getChildAt(offsetToLast);
             mLV->mMotionViewOriginalTop = lastView->getTop();
             // Don't fling more than 1 screen
-            delta = std::max(-(mLV->getHeight() - mLV->mPaddingBottom - mLV->mPaddingTop - 1), delta);
+            delta = std::max(-(mLV->getHeight() - mLV->mPaddingTop - mLV->mPaddingBottom - 1), delta);
         }
 
         // Check to see if we have bumped into the scroll limit
@@ -3908,7 +3908,7 @@ void AbsListView::FlingRunnable::run() {
         if (more && !atEnd) {
             if (atEdge) mLV->invalidate();
             mLastFlingY = y;
-            mLV->postOnAnimation(*this);//mFlingRunnable);
+            mLV->postOnAnimation(*this);
         } else {
             endFling();
             if (PROFILE_FLINGING) {
@@ -3942,7 +3942,7 @@ void AbsListView::FlingRunnable::run() {
                 }
             } else {
                 mLV->invalidate();
-                mLV->postOnAnimation(*this);//mFlingRunnable);
+                mLV->postOnAnimation(*this);
             }
         } else {
             endFling();
diff --git a/src/gui/widget/checkable.h b/src/gui/widget/checkable.h
index 83a6afb7..c9280083 100755
--- a/src/gui/widget/checkable.h
+++ b/src/gui/widget/checkable.h
@@ -2,13 +2,13 @@
 #define __CHECKABLE_H__
 #include <core/callbackbase.h>
 namespace cdroid{
-//#define FUNCTION_AS_CHECKABLE
+//#define FUNCTION_AS_CHECKABLE 1
 class Checkable{
 public:
 #ifdef FUNCTION_AS_CHECKABLE
-    CallbackBase<void,bool>setChecked;//virtual void setChecked(bool checked)=0;
-    CallbackBase<bool>isChecked;//virtual bool isChecked()const=0;
-    CallbackBase<void>toggle;//virtual void toggle()=0;
+    CallbackBase<void,bool>setChecked;
+    CallbackBase<bool>isChecked;
+    CallbackBase<void>toggle;
 #else
     virtual void setChecked(bool checked)=0;
     virtual bool isChecked()const=0;
diff --git a/src/gui/widget/compoundbutton.cc b/src/gui/widget/compoundbutton.cc
index b55e730d..7ace92de 100755
--- a/src/gui/widget/compoundbutton.cc
+++ b/src/gui/widget/compoundbutton.cc
@@ -18,25 +18,28 @@ CompoundButton::CompoundButton(const std::string&txt,int width,int height)
 }
 
 void CompoundButton::initCompoundButton(){
-    mChecked=false;
-    mBroadcasting=false;
-    mCheckedFromResource=false;
-    mButtonDrawable=nullptr;
-    mOnCheckedChangeListener=nullptr;
-    mOnCheckedChangeWidgetListener=nullptr;
+    mChecked = false;
+    mBroadcasting = false;
+    mCheckedFromResource = false;
+    mButtonDrawable = nullptr;
+    mOnCheckedChangeListener = nullptr;
+    mOnCheckedChangeWidgetListener = nullptr;
+    mButtonTintMode = TintMode::NONOP;
+    mButtonTintList = nullptr;
 #if FUNCTION_AS_CHECKABLE
     isChecked = [this]()->bool{
         return mChecked;
     };
     toggle = [this](){
-        setChecked(!mChecked);
+        doSetChecked(!mChecked);
     };
     setChecked = std::bind(&CompoundButton::doSetChecked,this,std::placeholders::_1);
 #endif
 }
 
+#ifndef FUNCTION_AS_CHECKABLE
 void CompoundButton::setChecked(bool checked){
-    CompoundButton::doSetChecked(checked);
+    doSetChecked(checked);
 }
 
 bool CompoundButton::isChecked()const{
@@ -44,8 +47,9 @@ bool CompoundButton::isChecked()const{
 }
 
 void CompoundButton::toggle(){
-    setChecked(!mChecked); 
+    doSetChecked(!mChecked); 
 }
+#endif
 
 CompoundButton::~CompoundButton(){
     delete mButtonDrawable;
@@ -73,7 +77,7 @@ void CompoundButton::drawableHotspotChanged(float x,float y){
 }
 
 bool CompoundButton::performClick(){
-    toggle();
+    doSetChecked(!mChecked);//toggle();
     const bool handled = Button::performClick();
     if (!handled) {
         // View only makes a sound effect if the onClickListener was
@@ -104,7 +108,7 @@ void CompoundButton::setButtonDrawable(Drawable*drawable){
 
             drawable->setVisible(getVisibility() == VISIBLE, false);
             setMinHeight(drawable->getIntrinsicHeight());
-            //applyButtonTint();
+            applyButtonTint();
         }
     } 
 }
@@ -122,6 +126,50 @@ void CompoundButton::jumpDrawablesToCurrentState(){
     if (mButtonDrawable ) mButtonDrawable->jumpToCurrentState();
 }
 
+void CompoundButton::setButtonTintList(ColorStateList* tint) {
+    mButtonTintList = tint;
+    applyButtonTint();
+}
+
+/**
+ * @return the tint applied to the button drawable
+ * @attr ref android.R.styleable#CompoundButton_buttonTint
+ * @see #setButtonTintList(ColorStateList)
+ */
+ColorStateList* CompoundButton::getButtonTintList() const{
+    return mButtonTintList;
+}
+
+void CompoundButton::setButtonTintMode(PorterDuffMode tintMode){
+    mButtonTintMode = tintMode;
+    //mHasButtonTintMode = true;
+    applyButtonTint();
+}
+
+PorterDuffMode CompoundButton::getButtonTintMode() const {
+    return (PorterDuffMode)mButtonTintMode;
+}
+
+void CompoundButton::applyButtonTint() {
+    if (mButtonDrawable  && (mButtonTintList || mButtonTintMode!=TintMode::NONOP)) {
+        mButtonDrawable = mButtonDrawable->mutate();
+
+        if (mButtonTintList) {
+            mButtonDrawable->setTintList(mButtonTintList);
+        }
+
+        if (mButtonTintMode!=TintMode::NONOP) {
+            mButtonDrawable->setTintMode(mButtonTintMode);
+        }
+
+        // The drawable (or one of its children) may not have been
+        // stateful before applying the tint, so let's try again.
+        if (mButtonDrawable->isStateful()) {
+            mButtonDrawable->setState(getDrawableState());
+        }
+    }
+}
+
 void CompoundButton::doSetChecked(bool checked){
     if (mChecked != checked) {
         mCheckedFromResource = false;
diff --git a/src/gui/widget/compoundbutton.h b/src/gui/widget/compoundbutton.h
index 10c2424f..13aeda75 100755
--- a/src/gui/widget/compoundbutton.h
+++ b/src/gui/widget/compoundbutton.h
@@ -10,10 +10,13 @@ private:
     bool mChecked;
     bool mBroadcasting;
     bool mCheckedFromResource;
+    int  mButtonTintMode;
     Drawable* mButtonDrawable;
+    ColorStateList*mButtonTintList;
     OnCheckedChangeListener mOnCheckedChangeListener;
     OnCheckedChangeListener mOnCheckedChangeWidgetListener;
     void initCompoundButton();
+    void applyButtonTint();
 protected:
     std::vector<int>onCreateDrawableState()override;
     int getHorizontalOffsetForDrawables()const override;
@@ -30,7 +33,10 @@ public:
     bool performClick()override;
     Drawable* getButtonDrawable()const;
     void jumpDrawablesToCurrentState()override;
-
+    void setButtonTintList(ColorStateList* tint);
+    ColorStateList* getButtonTintList()const;
+    void setButtonTintMode(PorterDuffMode tintMode);
+    PorterDuffMode getButtonTintMode()const;
     int getCompoundPaddingLeft()override;
     int getCompoundPaddingRight()override;
     //inerited from Checkable
diff --git a/src/gui/widget/listview.cc b/src/gui/widget/listview.cc
index 8d47b6b4..508e5937 100755
--- a/src/gui/widget/listview.cc
+++ b/src/gui/widget/listview.cc
@@ -1538,7 +1538,7 @@ int ListView::lookForSelectablePositionAfter(int current, int position, bool loo
 }
 
 void ListView::setSelectionAfterHeaderView() {
-    int count = getHeaderViewsCount();
+    const int count = getHeaderViewsCount();
     if (count > 0) {
         mNextSelectedPosition = 0;
         return;