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TiandituTileLayer.java
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TiandituTileLayer.java
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/*
* Copyright (C) 2019 Ziwei Huang
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cn.forward.tiledmapview.layer.tianditu;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import cn.forward.tiledmapview.config.LngLatProjectionTileConfig;
import cn.forward.tiledmapview.config.WebMercatorTileConfig;
import cn.forward.tiledmapview.core.IProjection;
import cn.forward.tiledmapview.core.ITileImageCache;
import cn.forward.tiledmapview.core.ITiledMapView;
import cn.forward.tiledmapview.layer.PicassoTileImageLoader;
import cn.forward.tiledmapview.layer.TileImageCache;
import cn.forward.tiledmapview.layer.TileLayer;
import cn.forward.tiledmapview.projection.LngLatProjection;
import cn.forward.tiledmapview.projection.WebMercatorProjection;
/**
* @author ziwei huang
*/
public class TiandituTileLayer extends TileLayer {
public TiandituTileLayer(ITiledMapView mapView, TiandituOnlineTileImageSource.ImgType imgType,
TiandituOnlineTileImageSource.ProjectionType projectionType,
String key) {
this(mapView, imgType, projectionType, key, new PicassoTileImageLoader());
}
/**
* @param mapView
* @param imgType
* @param projectionType
* @param key Using Tianditu API, you need to apply for a key. 使用天地图API,需要申请秘钥
* @see <a href="https://console.tianditu.gov.cn/api/key">Tianditu API key</a>
*/
public TiandituTileLayer(ITiledMapView mapView, TiandituOnlineTileImageSource.ImgType imgType,
TiandituOnlineTileImageSource.ProjectionType projectionType,
String key,
TileImageCache.ITileImageLoader tileImageLoader) {
Bitmap placeHolder = BitmapFactory.decodeResource(mapView.getContext().getResources(), cn.forward.tiledmapview.R.drawable.grid);
ITileImageCache imageCache = new TileImageCache(mapView, new TiandituOnlineTileImageSource(imgType, projectionType, key), tileImageLoader, placeHolder);
initialize(mapView, imageCache);
if (projectionType == TiandituOnlineTileImageSource.ProjectionType.LNG_LAT) {
mapView.setTileConfig(new LngLatProjectionTileConfig(1, 18));
IProjection projection = new LngLatProjection();
mapView.setProjection(projection);
} else {
mapView.setTileConfig(new WebMercatorTileConfig(1, 18));
IProjection projection = new WebMercatorProjection();
mapView.setProjection(projection);
}
}
}