请教一下listcontainer怎么设置item的左右滑动事件？

private Point componentpoint;
convertView.setDraggedListener(Component.DRAG_HORIZONTAL,new Component.DraggedListener() {
                @Override
                public void onDragDown(Component component, DragInfo dragInfo) {
                        LogUtil.info(TAG,"---onDragDown---"+dragInfo.downPoint.getPointX());
                }
                @Override
                public void onDragStart(Component component, DragInfo dragInfo) {
                    LogUtil.info(TAG,"---onDragStart---"+dragInfo.startPoint.getPointX());
                    pointStart = dragInfo.startPoint;
                    LogUtil.info(TAG,"onDragStart::component.getContentPositionX():"+component.getContentPositionX());
                    componentpoint = new Point(component.getContentPositionX(),component.getContentPositionY());
                }
                @Override
                public void onDragUpdate(Component component, DragInfo dragInfo) {
                    LogUtil.info(TAG,"---onDragUpdate---"+dragInfo.updatePoint.getPointX());
                    float xOffset = dragInfo.updatePoint.getPointX() - pointStart.getPointX();
                    LogUtil.info(TAG,"onDragUpdate::component.getContentPositionX():" + component.getContentPositionX());
                    if((componentpoint.getPointX() + xOffset) > 0 ) {
                        component.setContentPosition(componentpoint.getPointX() + xOffset, componentpoint.getPointY());
                        componentpoint = new Point(component.getContentPositionX(),component.getContentPositionY());
                    }
                }
                @Override
                public void onDragEnd(Component component, DragInfo dragInfo) {
                    float xOffset = dragInfo.updatePoint.getPointX() - pointStart.getPointX();
                    LogUtil.info(TAG,"onDragEnd::xOffset:" + xOffset);
                    if((componentpoint.getPointX() + xOffset) > 0 && (componentpoint.getPointX() + xOffset) < screenWidth / 2) {
                        component.setContentPosition(0, componentpoint.getPointY());
                    } else if ((componentpoint.getPointX() + xOffset) > 0 && (componentpoint.getPointX() + xOffset) >=  screenWidth / 2) {
                        deleteItem(position);
                    }
                    LogUtil.info(TAG,"onDragEnd::componentpoint.getPointX():"+componentpoint.getPointX());
                }
                @Override
                public void onDragCancel(Component component, DragInfo dragInfo) {
                    LogUtil.info(TAG,"---onDragCancel---"+dragInfo.updatePoint+"::"+dragInfo.xOffset);
                }
                @Override
                public boolean onDragPreAccept(Component component, int dragDirection) {
                    return true;
                }
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