我已经在我需要改变overlayitem的绘制，当用户点击它的应用程序。我使用下面的code来实现这种效果：

i have made an application in which i need to change the drawable of an overlayitem when a user clicks on it. i am using the following code to achieve this effect:

        protected boolean onTap(int index) {
        OverlayItem item = mOverlays.get(index);
        if(item.getTitle().equals("true")){
            if(item.getMarker(OverlayItem.ITEM_STATE_FOCUSED_MASK).equals(greenMarker)){
                item.setMarker(orangeMarker);
                view1ComplainPoleList.add(item.getSnippet());
                Log.i("adding",item.getSnippet());
                map.invalidate();
            }
            else{
                item.setMarker(greenMarker);
                view1ComplainPoleList.remove(item.getSnippet());
                Log.i("removing",item.getSnippet());
                map.invalidate();
            }
        }
        return true;
    }

但是，这似乎并不奏效。每当我点击它从视野中消失了overlayitem。什么错误？

But this does not seem to be working. whenever i click on an overlayitem it disappears from view. what is going wrong?

更新：

您也可以告诉我如何加载新的看法时，地图滚动...？

could you also tell me how to load new views when the map is scrolled...?

感谢你在前进。

推荐答案

这是的很简单，做的

This is very simple to do:

protected boolean onTap(int index) {
    OverlayItem item = mOverlays.get(index);
    //Get the new Drawable
    Drawable marker = mContext.getResources().getDrawable(R.drawable.icon);
    //Set its bounds
    marker.setBounds(0,0,marker.getIntrinsicWidth(),marker.getIntrinsicHeight());
    //Set the new marker
    item.setMarker(marker);
    //Return true! Do not invalidate
    return true;
}