仅当建筑物完全在cameraView中时才显示GroundOverlay

似乎Building1应该是建筑物边界点的列表，并且应该在循环中检查所有这些点是否包含在bounds：

...
List<LatLng> buildingPoints = new ArrayList<>();
buildingPoints.add(new LatLng(...,...))
buildingPoints.add(new LatLng(...,...))
...

...
if(mMap.getCameraPosition().zoom > 17){
    boolean allPointsVisible = true;
    for (LatLng currBuildingPoint: buildingPoints) {
        if (!bounds.contains(currBuildingPoint)) {
            allPointsVisible = false;
            break;
        }
    }
    if (allPointsVisible) {
        displayOverlay();
    }
 }
 ...