Question

关于移动端地图显示设置标记点，要求点击标记显示图片，查看了SampleCode里面的OverlayDemo里面示例，实际操作发现进入地图设计标记点第一次点击能够打开，第二次点击没反应

添加标记的方法

  drawableBlue = getResources().getDrawable(R.mipmap.pop_picture);
                defaultItemizedOverlay = new DefaultItemizedOverlay(drawableBlue);
                pointCenter = mapView.getCenter();
//                geoPoints.add(new Point2D(pointCenter.getX(),pointCenter.getY()));
                System.out.println("地图中心的坐标点是"+ pointCenter.getX()+";"+ pointCenter.getY());
                OverlayItem overlayItem = new OverlayItem(pointCenter, "", "");
                defaultItemizedOverlay.addItem(overlayItem);
                defaultItemizedOverlay.setOnFocusChangeListener(new SelectedOverlay());
                mapView.getOverlays().add(defaultItemizedOverlay);
                mapView.invalidate();

/**
 * Overlay焦点获取事件
 */
class SelectedOverlay implements ItemizedOverlay.OnFocusChangeListener {
    @Override
    public void onFocusChanged(ItemizedOverlay overlay, OverlayItem item) {
        Toast.makeText(getApplicationContext(), "图片已经被点击", Toast.LENGTH_SHORT).show();
    }
}