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我在我的地图上显示了一个 GroundOverlay,它的图像是用画布制作的,我在画布上画了一个弧线,但我遇到了一些问题:首先,应用程序在一段时间后崩溃(它给了我一个 java .lang.OutOfMemoryError),并且它没有显示覆盖。我尝试在叠加层的图片中放置白色背景并显示它,所以我猜问题来自弧线,但我不知道我做错了什么。有人知道吗?

Projection projection = map.getProjection();

                    Point point1 = projection.toScreenLocation(latlng1);
                    Point point2 = projection.toScreenLocation(latlng2);

                    float startAngle = (float) (Math.atan2(point1.y - point2.y,
                            point1.x - point2.x));
                    float sweepAngle = (float) (GenericNdData.getLateralTrajectory(
                            T_FplnType.ACTIVE.getId()).getSegment(i).getAngle());

                    float radius = FloatMath.sqrt((float) (Math.pow(
                            (point1.x - point2.x), 2) + Math.pow(
                            (point1.y - point2.y), 2)));
                    RectF rectangle = new RectF(point2.x - radius, point2.y
                            - radius, point2.x + radius, point2.y + radius);

                    Paint paint = new Paint();

                    paint.setARGB(250, 0, 255, 0);
                    paint.setAntiAlias(true);
                    paint.setSubpixelText(true);
                    paint.setFakeBoldText(true);
                    paint.setStrokeWidth(4f * Configuration.General.getScreenFactor());

                    paint.setStyle(Paint.Style.STROKE);

                    Bitmap arc = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);

                    Canvas canvas = new Canvas(arc);
                    canvas.drawColor(0xFFFFFFFF);
                    canvas.drawArc(rectangle,
                            (float) (Math.toDegrees(startAngle)),
                            (float) (Math.toDegrees(sweepAngle)), false, paint);

                    GroundOverlay groundArc = map.addGroundOverlay(new GroundOverlayOptions()
                     .image(BitmapDescriptorFactory.fromBitmap(arc))
                     .position(latlng2, 10000));

提前致谢。

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1 回答 1

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BitmapDescriptorFactory.fromBitmap()与标记一起使用时存在一个已知的内存泄漏问题。这可能是一个问题,但首先尝试:

GroundOverlay.remove()

调用之前添加的对象GoogleMap.addGroundOverlay

于 2013-04-22T09:49:05.837 回答