Android Studio百度地图路线规划以及POI搜索功能的实现
在Eclipse上开发百度地图的教程比较多，最近用的比较多的是Android Studio平台开发，本文主要是学习如何在Android Studio上进行百度地图的开发。
1.准备工作
这第一步网上说的很多了，就是关于百度地图的SDK下载以及Key的申请。具体教程可参考这篇博文：http://blog.csdn.net/chentravelling/article/details/50995524
2.功能实现
首先讲讲百度地图路线规划如何实现的。路线规划主要用到WalkingRouteOverlay，TransitRouteOverlay 以及 DrivingRouteOverlay这三个功能类，通过类获得起点与终点的路线信息进行规划并在地图上显示。用以下代码获得起点与终点信息，即移动端输入text文本信息：
startBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
String start = startEt.getText().toString();
String end = endEt.getText().toString();
String city = cityEt.getText().toString();
if (city == null || city.equals("")) {
city = GuideActivity.this.city;
}
routePlan(start, end, city);
}
});/**
* 发起路线规划
*/
public void routePlan(String start, String end, String city) {
mSearch = RoutePlanSearch.newInstance();
mSearch.setOnGetRoutePlanResultListener(listener);
// 起点与终点
PlanNode stNode = PlanNode.withCityNameAndPlaceName(city, start);
PlanNode enNode = PlanNode.withCityNameAndPlaceName(city, end);
// 步行路线规划
boolean res = mSearch.walkingSearch(new WalkingRoutePlanOption().from(
stNode).to(enNode)); //boolean res = mSearch.transitSearch(new TransitRoutePlanOption().from(
// stNode).city("杭州").to(enNode));/**
* 步行
*/
public void onGetWalkingRouteResult(WalkingRouteResult result) {
// 获取步行线路规划结果
if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
Toast.makeText(GuideActivity.this, "抱歉，未找到结果",
Toast.LENGTH_SHORT).show();
}
if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
// 起终点或途经点地址有岐义，通过以下接口获取建议查询信息
// result.getSuggestAddrInfo()
return;
}
if (result.error == SearchResult.ERRORNO.NO_ERROR) {
WalkingRouteOverlay overlay = new MyWalkingRouteOverlay(
mBaiduMap);
mBaiduMap.setOnMarkerClickListener(overlay);
overlay.setData(result.getRouteLines().get(0));
overlay.addToMap();
overlay.zoomToSpan();
//Toast.makeText(GuideActivity.this,"点击图标会有指示哦～",
// Toast.LENGTH_SHORT).show();
}
}
public void onGetTransitRouteResult(TransitRouteResult result) {
// 获取公交换乘路径规划结果
if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
Toast.makeText(GuideActivity.this, "抱歉，未找到结果",
Toast.LENGTH_SHORT).show();
}
if (result.error == SearchResult.ERRORNO.AMBIGUOUS_ROURE_ADDR) {
//起终点或途经点地址有岐义，通过以下接口获取建议查询信息
//result.getSuggestAddrInfo()
return;
}
if (result.error == SearchResult.ERRORNO.NO_ERROR) {
TransitRouteOverlay overlay = new MyTransitRouteOverlay(mBaiduMap);
mBaiduMap.setOnMarkerClickListener(overlay);
overlay.setData(result.getRouteLines().get(0));
overlay.addToMap();
overlay.zoomToSpan();
//Toast.makeText(GuideActivity.this,"点击图标会有指示哦～",
// Toast.LENGTH_SHORT).show();
}
}点击事件的接口 BaiduMap.OnMapClickListener，有关模块如下：
//增加监听：长按地图
baiduMap.setOnMapLongClickListener(new OnMapLongClickListener());
//增加监听：map click listener ,主要监听poi点击
baiduMap.setOnMapClickListener(new OnMapClickListener());
//地理编码模块
mSearch = GeoCoder.newInstance();
//增加监听：地理编码查询结果
mSearch.setOnGetGeoCodeResultListener(this);
//POI搜索模块
poiSearch = PoiSearch.newInstance();
//增加监听：POI搜索结果
poiSearch.setOnGetPoiSearchResultListener(new PoiSearchListener());
//模糊搜索
suggestionSearch = SuggestionSearch.newInstance();
//增加监听：模糊搜索查询结果
suggestionSearch.setOnGetSuggestionResultListener(new SuggestionResultListener());接口 BaiduMap.OnMapClickListener的实现：
private class OnMarkerClickListener implements BaiduMap.OnMarkerClickListener {
@Override
public boolean onMarkerClick(Marker marker) {
BDLocation bdLocation = new BDLocation();
bdLocation.setAddrStr(marker.getTitle());
bdLocation.setLatitude(marker.getPosition().latitude);
bdLocation.setLongitude(marker.getPosition().longitude);
//弹出信息
//poputInfo(bdLocation, marker.getTitle());
return false;
}
} @Override
public void onGetPoiDetailResult(PoiDetailResult poiDetailResult) {
if (poiDetailResult == null
|| poiDetailResult.error == SearchResult.ERRORNO.RESULT_NOT_FOUND) {
Toast.makeText(PoiActivity.this, "未找到结果", Toast.LENGTH_LONG)
.show();
return;
}
if (poiDetailResult.error == SearchResult.ERRORNO.NO_ERROR) {
//搜索到POI
baiduMap.clear();
baiduMap.addOverlay(
new MarkerOptions()
.position(poiDetailResult.location) //坐标位置
.icon(BitmapDescriptorFactory.fromResource(R.drawable.icon_gcoding))
.title(poiDetailResult.getAddress()) //标题
);
//将该POI点设置为地图中心
baiduMap.setMapStatus(MapStatusUpdateFactory.newLatLng(poiDetailResult.location));
Toast.makeText(PoiActivity.this, "搜索中...", Toast.LENGTH_LONG).show();
return;
}
if (poiDetailResult.error == SearchResult.ERRORNO.AMBIGUOUS_KEYWORD) {
}
}
@Override
public void onGetPoiIndoorResult(PoiIndoorResult poiIndoorResult) {
}
} private class SuggestionResultListener implements OnGetSuggestionResultListener {
@Override
public void onGetSuggestionResult(final SuggestionResult suggestionResult) {
if (suggestionResult == null || suggestionResult.getAllSuggestions() == null) {
return;
}
List suggest = new ArrayList<>();
for (SuggestionResult.SuggestionInfo suggestionInfo : suggestionResult.getAllSuggestions()) {
if (suggestionInfo.key != null) {
suggest.add(suggestionInfo.key);
}
}
adapter = new ArrayAdapter(PoiActivity.this, android.R.layout.simple_dropdown_item_1line, suggest);
autoCompleteTextView.setAdapter(adapter);
autoCompleteTextView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView parent, View view, int position, long id) {
SuggestionResult.SuggestionInfo info = suggestionResult.getAllSuggestions().get(position);
poiSearch.searchPoiDetail(new PoiDetailSearchOption().poiUid(info.uid));
}
});
adapter.notifyDataSetChanged();
}
} 
点击其中一个词条即可跳出地图位置：
开发过程中遇到的问题比较多，这里讲讲两个主要问题。
第一个问题：验证出错，错误码：230，请AndroidManifest.xml文件中检查 kye 设置。解决方法：在检查sha1值和包名，都无误，依然不能解决问题时，请：查看app
module目录下的有没有debug.keystore，如果有，用自己电脑里的debug.keystore来将其替换掉，然后rebuild，运行即可。
第二个问题：百度地图SDK v3.6.0以上版本找不到PoiOverlay类。解决方法：将官方样例代码BaiduMap_AndroidMapSDK_v4.4.0_Sample\BaiduMapsApiDemo\src下的com.baidu.mapapi
（类PoiOverlay在com.baidu.mapapi.overlayutil包中）直接复制粘贴到自己项目相应的位置中，有时需要删除clusterutil这个包。