DrawUtils.java 文件源码

/**
 * Drawable ת bitmap
 * 
 * @param drawable
 * @return
 */
public static Bitmap drawable2Bitmap(Drawable drawable)
{
    if (drawable instanceof BitmapDrawable)
    {
        return ((BitmapDrawable) drawable).getBitmap();
    }
    else if (drawable instanceof NinePatchDrawable)
    {
        Bitmap bitmap =
                    Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), drawable
                                .getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
                                : Bitmap.Config.RGB_565);
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight());
        drawable.draw(canvas);
        return bitmap;
    }
    else
    {
        return null;
    }
}