Android 百度地图POI搜索功能实例代码

using Android.App;
using Android.Content.PM;
using Android.OS;
using Android.Support.V4.App;
using Android.Widget;
using BdMapV371Demos.SrcOverlayUtil;
using Com.Baidu.Mapapi.Map;
using Com.Baidu.Mapapi.Search.Core;
using Com.Baidu.Mapapi.Search.Poi;
using Com.Baidu.Mapapi.Search.Sug;
namespace BdMapV371Demos.SrcSdkDemos
{
/// <summary>
/// 演示poi搜索功能
/// </summary>
[Activity(Label = "@string/demo_name_poi",
ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.KeyboardHidden,
ScreenOrientation = ScreenOrientation.Sensor)]
public class Demo12PoiSearch : FragmentActivity
{
private PoiSearch mPoiSearch = null;
private SuggestionSearch mSuggestionSearch = null;
private BaiduMap mBaiduMap = null;
// 搜索关键字输入窗口
private AutoCompleteTextView keyWorldsView = null;
private ArrayAdapter<string> sugAdapter = null;
private int load_Index = 0;
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
SetContentView(Resource.Layout.demo12_poisearch);
// 初始化搜索模块，注册搜索事件监听
mPoiSearch = PoiSearch.NewInstance();
mPoiSearch.GetPoiResult += (s, e) =>
{
var result = e.P0;
if (result == null
|| result.Error == SearchResult.ERRORNO.ResultNotFound)
{
return;
}
if (result.Error == SearchResult.ERRORNO.NoError)
{
mBaiduMap.Clear();
PoiOverlay overlay = new MyPoiOverlay(this, mBaiduMap);
mBaiduMap.SetOnMarkerClickListener(overlay);
overlay.SetData(result);
overlay.AddToMap();
overlay.ZoomToSpan();
return;
}
if (result.Error == SearchResult.ERRORNO.AmbiguousKeyword)
{
// 当输入关键字在本市没有找到，但在其他城市找到时，返回包含该关键字信息的城市列表
string strInfo = "在";
foreach (CityInfo cityInfo in result.SuggestCityList)
{
strInfo += cityInfo.City;
strInfo += ",";
}
strInfo += "找到结果";
Toast.MakeText(this, strInfo, ToastLength.Long)
.Show();
}
};
mPoiSearch.GetPoiDetailResult += (s, e) =>
{
var result = e.P0;
if (result.Error != SearchResult.ERRORNO.NoError)
{
Toast.MakeText(this, "抱歉，未找到结果", ToastLength.Short).Show();
}
else
{
Toast.MakeText(this, "成功，查看详情页面", ToastLength.Short).Show();
}
};
mSuggestionSearch = SuggestionSearch.NewInstance();
mSuggestionSearch.GetSuggestionResult += (s, e) =>
{
var res = e.P0;
if (res == null || res.AllSuggestions == null) return;
sugAdapter.Clear();
foreach (SuggestionResult.SuggestionInfo info in res.AllSuggestions)
{
if (info.Key != null) sugAdapter.Add(info.Key);
}
sugAdapter.NotifyDataSetChanged();
};
keyWorldsView = FindViewById<AutoCompleteTextView>(Resource.Id.searchkey);
sugAdapter = new ArrayAdapter<string>(this, Android.Resource.Layout.SimpleDropDownItem1Line);
keyWorldsView.Adapter = sugAdapter;
TextureMapFragment map1 = FragmentManager.FindFragmentById<TextureMapFragment>(Resource.Id.map);
mBaiduMap = map1.BaiduMap;
// 当输入关键字变化时，动态更新建议列表
keyWorldsView.AfterTextChanged += (sender, e) => { };
keyWorldsView.BeforeTextChanged += (sender, e) => { };
keyWorldsView.TextChanged += (sender, e) =>
{
string s = e.Text.ToString();
if (s.Length <= 0) return;
string city = (FindViewById<EditText>(Resource.Id.city)).Text;
// 使用建议搜索服务获取建议列表，结果在onSuggestionResult()中更新
mSuggestionSearch.RequestSuggestion(
new SuggestionSearchOption().Keyword(s).City(city));
};
Button btnSearch = FindViewById<Button>(Resource.Id.search);
btnSearch.Click += delegate
{
SearchButtonProcess();
};
Button btnNext = FindViewById<Button>(Resource.Id.map_next_data);
btnNext.Click += delegate
{
load_Index++;
SearchButtonProcess();
};
}
protected override void OnPause()
{
base.OnPause();
}
protected override void OnResume()
{
base.OnResume();
}
protected override void OnDestroy()
{
mPoiSearch.Destroy();
mSuggestionSearch.Destroy();
base.OnDestroy();
}
protected override void OnSaveInstanceState(Bundle outState)
{
base.OnSaveInstanceState(outState);
}
protected override void OnRestoreInstanceState(Bundle savedInstanceState)
{
base.OnRestoreInstanceState(savedInstanceState);
}
public void SearchButtonProcess()
{
EditText editCity = FindViewById<EditText>(Resource.Id.city);
EditText editSearchKey = FindViewById<EditText>(Resource.Id.searchkey);
mPoiSearch.SearchInCity(new PoiCitySearchOption()
.City(editCity.Text)
.Keyword(editSearchKey.Text)
.PageNum(load_Index));
}
private class MyPoiOverlay : PoiOverlay
{
Demo12PoiSearch poiSearchDemo;
public MyPoiOverlay(Demo12PoiSearch poiSearchDemo, BaiduMap baiduMap) :
base(baiduMap)
{
this.poiSearchDemo = poiSearchDemo;
}
public override bool OnPoiClick(int index)
{
base.OnPoiClick(index);
PoiInfo poi = GetPoiResult().AllPoi[index];
if (poi.HasCaterDetails)
{
poiSearchDemo.mPoiSearch.SearchPoiDetail(
new PoiDetailSearchOption().PoiUid(poi.Uid));
}
return true;
}
}
}
} 								 
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