可拉伸转换为位图改变谷歌地图API的Andr​​oid V2标记的颜色 [英] Converting a Drawable to a Bitmap to change the color of a Marker in Google Maps Android API v2

问题描述

我是从V1至V2转换旧应用程序，而我在与我的标记图标的颜色有问题。我有一个基本的，白色的图标，它需要进行着色。

I'm converting an old application from v1 to v2, and I'm having a problem with the color of my Marker icons. I have a basic, white icon, and It needs to be colorized.

在V1，我这样做的：

Drawable d = DrawableUtils.resizeImageToDrawable(
    MapViewFragment.mapviewActivity,
    Configuration.Display.getDrawableFix(i),
    Configuration.MapView.getWaypointIconWidth(),
    Configuration.MapView.getWaypointIconHeight());
d.setColorFilter(color, Mode.MULTIPLY);

overlay = new MyFplnFixListItimizedOverlay(d);

由于V2标记不接受可绘制他们的图标，我想到了绘制对象转换为位图，像这样的：

Since v2 Markers do not accept Drawables for their icons, I thought about converting the Drawable to a Bitmap, like this :

Drawable d = DrawableUtils.resizeImageToDrawable(
    MapViewFragment.mapviewActivity,
    Configuration.Display.getDrawableFix(i),
    Configuration.MapView.getWaypointIconWidth(),
    Configuration.MapView.getWaypointIconHeight());
d.setColorFilter(color, Mode.MULTIPLY);

Bitmap icon = ((BitmapDrawable) d).getBitmap();

Marker marker = MapViewFragment.map.addMarker(new MarkerOptions()
    .position(point)
    .title(Integer.toString(fplnType))
    .visible(true)
    .icon(BitmapDescriptorFactory.fromBitmap(icon)));

但由于某些原因，它不工作。图标留白。任何人都知道这是为什么？

But for some reason, it's not working. The icons stay white. Anyone knows why ?

先谢谢了。

推荐答案

确定，这里就是我做了它在一天的末尾：

OK, here's how I did it at the end of the day :

Drawable d = DrawableUtils.resizeImageToDrawable(
                    MapViewFragment.mapViewActivity,
                    Configuration.Display.getDrawableFix(i),
                    Configuration.MapView.getWaypointIconWidth(),
                    Configuration.MapView.getWaypointIconHeight());
d.setColorFilter(color, Mode.MULTIPLY);

Bitmap b = ((BitmapDrawable) d).getBitmap();
Canvas myCanvas = new Canvas(b);

int myColor = b.getPixel(0,0);
ColorFilter filter = new LightingColorFilter(myColor, color);

Paint pnt = new Paint();
pnt.setColorFilter(filter);
myCanvas.drawBitmap(b,0,0,pnt);

Marker marker = MapViewFragment.map.addMarker(new MarkerOptions()
    .position(point)
    .title(Integer.toString(fplnType))
    .visible(true)
    .icon(BitmapDescriptorFactory.fromBitmap(b)));

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