i use MapImageLayer just like that:
var data:Object = locations[index];
var buttomPoint:MapPoint = WebMercatorUtil.geographicToWebMercator(new MapPoint(data.lngButtom,data.latButtom)) as MapPoint
var topPoint:MapPoint = WebMercatorUtil.geographicToWebMercator(new MapPoint(data.lngTop,data.latTop)) as MapPoint
mapImage = new MapImage();
mapImage.extent = new Extent(buttomPoint.x, buttomPoint.y, topPoint.x, topPoint.y, new SpatialReference(3857));
mapImage.href = UrlUtils.getCompletedUrl(data.fileName);
mapImageLayer.removeAll();
mapImageLayer.add(mapImage);
and when i drag the map , the image will change the extent.
p1-------p2
|---------|
|---------| after draging p1 have not change,but p2,p3,p4 is lest than what before draging
p4-------p3
who can tall me what is wrong with it? thank you!
