MapLayer.java 文件源码

public void setImage(Picture image) {
    this.image = image;

    if (mapView.getWidth() == 0) {
        ViewTreeObserver vto = mapView.getViewTreeObserver();
        vto.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
            public boolean onPreDraw() {
                if (!hasMeasured) {
                    initMapLayer();
                    hasMeasured = true;
                }
                return true;
            }
        });
    } else {
        initMapLayer();
    }
}