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copied!<p>thx etteyafed for your answer</p> <p>the problem was </p> <pre><code>if (shadow == false) </code></pre> <p>the working code here:</p> <pre><code>if (shadow == false) { if ((bmap == null) || (lastLatSpan != mapv.getLatitudeSpan()) || true) { // bitmap is null - so we haven't previously drawn the path, OR // the map has been zoomed in/out, so we're gonna re-draw it // anyway // (alternatively, I could have tried scaling the bitmap... // might // be worth investigating if that is more efficient) // create a new bitmap, the size of the map view Canvas offscreencanvas = new Canvas(); bmap = Bitmap.createBitmap(mapv.getWidth(), mapv.getHeight(), Bitmap.Config.ARGB_8888); bmap.copy(Config.ARGB_4444, true); offscreencanvas.setBitmap(bmap); mCanvas = offscreencanvas; Path path = null; Projection projection = mapv.getProjection(); lastLatSpan = mapv.getLatitudeSpan(); for (int j = 0; j < mTourenArray.length; j++) { GeoPoint[] route = GeoPointFactory .createGeoPointArray(mTourenArray[j] .getGeoPointArray()); defaultColor = mTourenArray[j].getColorByCat(); path = new Path(); Paint polyPaint = new Paint(); polyPaint.setColor(defaultColor); for (int i = 0; i < route.length - 1; i++) { GeoPoint gp1 = route[i]; GeoPoint gp2 = route[i + 1]; polyPaint.setAntiAlias(true); Point point = new Point(); projection.toPixels(gp1, point); // mode=1&#65306;start if (i == 0) { Point point2 = new Point(); projection.toPixels(gp2, point2); RectF oval = new RectF(point.x - mRadius, point.y - mRadius, point.x + mRadius, point.y + mRadius); // start point offscreencanvas.drawOval(oval, polyPaint); path.moveTo(point.x, point.y); path.lineTo(point2.x, point2.y); } /* mode=3&#65306;end */ else if (i == route.length - 2) { /* the last path */ Point point2 = new Point(); projection.toPixels(gp2, point2); path.lineTo(point2.x, point2.y); RectF oval = new RectF(point2.x - mRadius, point2.y - mRadius, point2.x + mRadius, point2.y + mRadius); /* end point */ polyPaint.setAlpha(255); offscreencanvas.drawOval(oval, polyPaint); } // mode=2&#65306;path else if (i < route.length - 2 & i != 0) { Point point2 = new Point(); projection.toPixels(gp2, point2); path.lineTo(point2.x, point2.y); } } // create an off-screen canvas to prepare new bitmap, and // draw path on to it polyPaint.setStrokeWidth(5); polyPaint.setStyle(Paint.Style.STROKE); polyPaint.setAntiAlias(true); polyPaint.setAlpha(defaultColor == Color .parseColor("#6C8715") ? 220 : 120); offscreencanvas.drawPath(path, polyPaint); } // Outer For End // draw the bitmap of the path onto my map view's canvas // And set these pixels to destination bitmap: canvas.drawBitmap(bmap, 0, 0, null); panAfterZoom(mapv, 600); // make a note of where we put the bitmap, so we know how // much we // we need to move it by if the user pans the map mapStartPosition = projection.fromPixels(0, 0); } else { // as we're in onDraw, we think the user has panned/moved the // map // if we're in here, the zoom level hasn't changed, and // we've already got a bitmap with a drawing of the route path Projection proj = mapv.getProjection(); // where has the mapview been panned to? Point offsetPt = new Point(); proj.toPixels(mapStartPosition, offsetPt); // start point // create a new bitmap, the size of the map view // draw the bitmap in the new correct location canvas.drawBitmap(bmap, offsetPt.x, offsetPt.y, null); } } return super.draw(canvas, mapv, shadow, when); } </code></pre>

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