概述：
在前面的文章里提到了Arcgis for js加载天地图，在本节，继续讲解如何在Arcgis for js中加载百度地图。
效果：
地图
影像-无标注
影像-有标注
实现：
第一，在此感谢这篇文章的主人，给了我很大的启发与帮助，因为一直在找相关的参数，都不对，只有这个参数是没有问题的。
第二，百度地图可调用的有地图切片，影像切片，以及道路等POI切片，我将之用TiledMapServiceLayer做了扩展，成了BDAnoLayer，BDVecLayer，BDimgLayer三个图层，，其代码如下：
BDAnoLayer.js
define(["dojo/_base/declare","esri/layers/tiled"],function (declare) {return declare(esri.layers.TiledMapServiceLayer, {constructor: function () {this.spatialReference = new esri.SpatialReference({ wkid: 102100 });this.initialExtent = (this.fullExtent = new esri.geometry.Extent(-20037508.3427892, -20037508.3427892, 20037508.3427892, 20037508.3427892, this.spatialReference));this.scale = [591657527.591555,295828763.795777,147914381.897889,73957190.948944,36978595.474472,18489297.737236,9244648.868618,4622324.434309,2311162.217155,1155581.108577,577790.554289,288895.277144,144447.638572,72223.819286,36111.9096437,18055.9548224,9027.977411,4513.988705,2256.994353,1128.497176];this.resolution = [156543.033928,78271.5169639999,39135.7584820001,19567.8792409999,9783.93962049996,4891.96981024998,2445.98490512499,1222.99245256249,611.49622628138,305.748113140558,152.874056570411,76.4370282850732,38.2185141425366,19.1092570712683,9.55462853563415,4.77731426794937,2.38865713397468,1.19432856685505,0.597164283559817,0.298582141647617];this.tileInfo = new esri.layers.TileInfo({"rows": 256,"cols": 256,"compressionQuality": 90,"origin": {"x": -20037508.3427892,"y": 20037508.3427892},"spatialReference": this.spatialReference,"lods": [{ "level": 0, "resolution": this.resolution[0], "scale": this.scale[0] },{ "level": 1, "resolution": this.resolution[1], "scale": this.scale[1] },{ "level": 2, "resolution": this.resolution[2], "scale": this.scale[2] },{ "level": 3, "resolution": this.resolution[3], "scale": this.scale[3] },{ "level": 4, "resolution": this.resolution[4], "scale": this.scale[4] },{ "level": 5, "resolution": this.resolution[5], "scale": this.scale[5] },{ "level": 6, "resolution": this.resolution[6], "scale": this.scale[6] },{ "level": 7, "resolution": this.resolution[7], "scale": this.scale[7] },{ "level": 8, "resolution": this.resolution[8], "scale": this.scale[8] },{ "level": 9, "resolution": this.resolution[9], "scale": this.scale[9] },{ "level": 10, "resolution": this.resolution[10], "scale": this.scale[10] },{ "level": 11, "resolution": this.resolution[11], "scale": this.scale[11] },{ "level": 12, "resolution": this.resolution[12], "scale": this.scale[12] },{ "level": 13, "resolution": this.resolution[13], "scale": this.scale[13] },{ "level": 14, "resolution": this.resolution[14], "scale": this.scale[14] },{ "level": 15, "resolution": this.resolution[15], "scale": this.scale[15] },{ "level": 16, "resolution": this.resolution[16], "scale": this.scale[16] },{ "level": 17, "resolution": this.resolution[17], "scale": this.scale[17] },{ "level": 18, "resolution": this.resolution[18], "scale": this.scale[18] },{ "level": 19, "resolution": this.resolution[19], "scale": this.scale[19] }]});this.loaded = true;this.onLoad(this);},getTileUrl: function (level, row, col) {var zoom = level – 1;var offsetX = parseInt(Math.pow(2, zoom));var offsetY = offsetX – 1;var numX = col – offsetX, numY = (-row) + offsetY ;var num = (col + row) % 8 + 1;return "" + num + ".map.bdimg.com/tile/?qt=tile&x="+numX+"&y="+numY+"&z="+level+"&styles=sl&udt=20141015";}});});
BDVecLayer.js
每一发奋努力的背后，必有加倍的赏赐。
