實現效果圖 如下

這是百度地圖 POISearch的效果，

????????????????????

這是自己寫的效果

首先實現這個功能主要用到了兩個部分

第一個部分 AutoCompleteTextView

具體使用參考 http://blog.csdn.net/iamkila/article/details/7230160

第二個部分 百度地圖的在線搜索建議功能。

http://developer.baidu.com/map/index.php?title=androidsdk/guide/retrieval

實現這個功能主要過程 可以分成幾步

1.sugAdapter = new ArrayAdapter(this,android.R.layout.simple_dropdown_item_1line);

給AutoCompleteTextView創建一個adapter

(注意：這里創建Adapter時沒有提供 字符串數據源， 而是動態的添加的)

2.keyWorldsView.setAdapter(sugAdapter);

3.AutoCompleteTextView?? 添加? onTextChangedListener 監聽器

復寫 三個方法

afterTextChanged

beforeTextChanged

onTextChanged(){

在該方法內部 調用 百度sdk提供的搜索建議方法

/**

* 使用建議搜索服務獲取建議列表，結果在onGetSuggestionResult()中更新

*/

mSuggestionSearch

.requestSuggestion((new SuggestionSearchOption())

.keyword(cs.toString()).city(city));

}

4.復寫 onGetSuggestionResult() 方法? 復寫改方法有兩種方式

(1)OnGetSuggestionResultListener listener = new OnGetSuggestionResultListener() {

public void onGetSuggestionResult(SuggestionResult res) {

if (res == null || res.getAllSuggestions() == null) {

return;

//未找到相關結果

}

//獲取在線建議檢索結果

}

};

自己創建一個監聽器，復寫方法。

讓mSuggestionSearch 添加監聽

mSuggestionSearch.setOnGetSuggestionResultListener(listener);

(2) 讓 Activity 實現 接口?? implements? OnGetSuggestionResultListener

在Activity中 復寫onGetSuggestionResult 方法

public void onGetSuggestionResult(SuggestionResult res) {

if (res == null || res.getAllSuggestions() == null) {

return;

//未找到相關結果

}

//獲取在線建議檢索結果

}

};

5.

第 3 步中的? mSuggestionSearch

.requestSuggestion((new SuggestionSearchOption())

.keyword(cs.toString()).city(city));

方法調用之后就會回調

第 4 步中的?? onGetSuggestionResult 方法。 所以要在 onGetSuggestionResult 方法中給adapter提供字符串數據源

sugAdapter.clear();

每次提供數據源的時候 都要清除上一次搜索的結果

循環讀取結果 并且添加到 adapter中

for (SuggestionResult.SuggestionInfo info : res.getAllSuggestions()) {

if (info.key != null)

sugAdapter.add(info.key);

}

sugAdapter.notifyDataSetChanged();提醒數據發生改變，這時 AutoCompleteTextView就會使用Adapter提供的

字符串數據源

然后給出?這幾個步驟對應的?截圖。

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最后給出官方BaiduMapsApiDemo?中的????? POISearch.java?中的代碼

可以自己對照著比較

package baidumapsdk.demo;

import android.os.Bundle;

import android.support.v4.app.FragmentActivity;

import android.text.Editable;

import android.text.TextWatcher;

import android.view.View;

import android.widget.ArrayAdapter;

import android.widget.AutoCompleteTextView;

import android.widget.EditText;

import android.widget.Toast;

import com.baidu.mapapi.map.BaiduMap;

import com.baidu.mapapi.map.SupportMapFragment;

import com.baidu.mapapi.overlayutil.PoiOverlay;

import com.baidu.mapapi.search.core.CityInfo;

import com.baidu.mapapi.search.core.PoiInfo;

import com.baidu.mapapi.search.core.SearchResult;

import com.baidu.mapapi.search.poi.OnGetPoiSearchResultListener;

import com.baidu.mapapi.search.poi.PoiCitySearchOption;

import com.baidu.mapapi.search.poi.PoiDetailResult;

import com.baidu.mapapi.search.poi.PoiDetailSearchOption;

import com.baidu.mapapi.search.poi.PoiResult;

import com.baidu.mapapi.search.poi.PoiSearch;

import com.baidu.mapapi.search.sug.OnGetSuggestionResultListener;

import com.baidu.mapapi.search.sug.SuggestionResult;

import com.baidu.mapapi.search.sug.SuggestionSearch;

import com.baidu.mapapi.search.sug.SuggestionSearchOption;

/**

* 演示poi搜索功能

*/

public class PoiSearchDemo extends FragmentActivity implements

OnGetPoiSearchResultListener, OnGetSuggestionResultListener {

private PoiSearch mPoiSearch = null;

private SuggestionSearch mSuggestionSearch = null;

private BaiduMap mBaiduMap = null;

/**

* 搜索關鍵字輸入窗口

*/

private AutoCompleteTextView keyWorldsView = null;

private ArrayAdapter sugAdapter = null;

private int load_Index = 0;

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_poisearch);

// 初始化搜索模塊，注冊搜索事件監聽

mPoiSearch = PoiSearch.newInstance();

mPoiSearch.setOnGetPoiSearchResultListener(this);

mSuggestionSearch = SuggestionSearch.newInstance();

mSuggestionSearch.setOnGetSuggestionResultListener(this);

keyWorldsView = (AutoCompleteTextView) findViewById(R.id.searchkey);

sugAdapter = new ArrayAdapter(this,

android.R.layout.simple_dropdown_item_1line);

keyWorldsView.setAdapter(sugAdapter);

mBaiduMap = ((SupportMapFragment) (getSupportFragmentManager()

.findFragmentById(R.id.map))).getBaiduMap();

/**

* 當輸入關鍵字變化時，動態更新建議列表

*/

keyWorldsView.addTextChangedListener(new TextWatcher() {

@Override

public void afterTextChanged(Editable arg0) {

}

@Override

public void beforeTextChanged(CharSequence arg0, int arg1,

int arg2, int arg3) {

}

@Override

public void onTextChanged(CharSequence cs, int arg1, int arg2,

int arg3) {

if (cs.length() <= 0) {

return;

}

String city = ((EditText) findViewById(R.id.city)).getText()

.toString();

/**

* 使用建議搜索服務獲取建議列表，結果在onSuggestionResult()中更新

*/

mSuggestionSearch

.requestSuggestion((new SuggestionSearchOption())

.keyword(cs.toString()).city(city));

}

});

}

@Override

protected void onPause() {

super.onPause();

}

@Override

protected void onResume() {

super.onResume();

}

@Override

protected void onDestroy() {

mPoiSearch.destroy();

mSuggestionSearch.destroy();

super.onDestroy();

}

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

}

@Override

protected void onRestoreInstanceState(Bundle savedInstanceState) {

super.onRestoreInstanceState(savedInstanceState);

}

/**

* 影響搜索按鈕點擊事件

*

* @param v

*/

public void searchButtonProcess(View v) {

EditText editCity = (EditText) findViewById(R.id.city);

EditText editSearchKey = (EditText) findViewById(R.id.searchkey);

mPoiSearch.searchInCity((new PoiCitySearchOption())

.city(editCity.getText().toString())

.keyword(editSearchKey.getText().toString())

.pageNum(load_Index));

}

public void goToNextPage(View v) {

load_Index++;

searchButtonProcess(null);

}

public void onGetPoiResult(PoiResult result) {

if (result == null

|| result.error == SearchResult.ERRORNO.RESULT_NOT_FOUND) {

Toast.makeText(PoiSearchDemo.this, "未找到結果", Toast.LENGTH_LONG)

.show();

return;

}

if (result.error == SearchResult.ERRORNO.NO_ERROR) {

mBaiduMap.clear();

PoiOverlay overlay = new MyPoiOverlay(mBaiduMap);

mBaiduMap.setOnMarkerClickListener(overlay);

overlay.setData(result);

overlay.addToMap();

overlay.zoomToSpan();

return;

}

if (result.error == SearchResult.ERRORNO.AMBIGUOUS_KEYWORD) {

// 當輸入關鍵字在本市沒有找到，但在其他城市找到時，返回包含該關鍵字信息的城市列表

String strInfo = "在";

for (CityInfo cityInfo : result.getSuggestCityList()) {

strInfo += cityInfo.city;

strInfo += ",";

}

strInfo += "找到結果";

Toast.makeText(PoiSearchDemo.this, strInfo, Toast.LENGTH_LONG)

.show();

}

}

public void onGetPoiDetailResult(PoiDetailResult result) {

if (result.error != SearchResult.ERRORNO.NO_ERROR) {

Toast.makeText(PoiSearchDemo.this, "抱歉，未找到結果", Toast.LENGTH_SHORT)

.show();

} else {

Toast.makeText(PoiSearchDemo.this, result.getName() + ": " + result.getAddress(), Toast.LENGTH_SHORT)

.show();

}

}

@Override

public void onGetSuggestionResult(SuggestionResult res) {

if (res == null || res.getAllSuggestions() == null) {

return;

}

sugAdapter.clear();

for (SuggestionResult.SuggestionInfo info : res.getAllSuggestions()) {

if (info.key != null)

sugAdapter.add(info.key);

}

sugAdapter.notifyDataSetChanged();

}

private class MyPoiOverlay extends PoiOverlay {

public MyPoiOverlay(BaiduMap baiduMap) {

super(baiduMap);

}

@Override

public boolean onPoiClick(int index) {

super.onPoiClick(index);

PoiInfo poi = getPoiResult().getAllPoi().get(index);

// if (poi.hasCaterDetails) {

mPoiSearch.searchPoiDetail((new PoiDetailSearchOption())

.poiUid(poi.uid));

// }

return true;

}

}

}

總結

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