java - Android OverlayItem.setMarker() : Change the marker for one item

Question

尝试更改覆盖项目的标记时，我注意到 setMarker() 使该项目不可见。这是代码示例。

//Create new marker
Drawable icon = this.getResources().getDrawable(R.drawable.marker);

//Set the new marker to the overlay
overlayItem.setMarker(icon);

Answer 1

需要为Drawable指定一个边界矩形:

//Create new marker
Drawable icon = this.getResources().getDrawable(R.drawable.marker);

//Set the bounding for the drawable
icon.setBounds(
    0 - icon.getIntrinsicWidth() / 2, 0 - icon.getIntrinsicHeight(), 
    icon.getIntrinsicWidth() / 2, 0);

//Set the new marker to the overlay
overlayItem.setMarker(icon);