android使用最新版百度地圖實現城市切換和城市poi搜索

時間 2019-11-16

標籤 android 使用最新版百度地圖實現城市切換 poi 搜索欄目 Android 简体版

原文原文鏈接

很少囉嗦，先上圖，再上代碼java

這是進入後的主界面，會自動定位到本身的當前位置：
android

這是點擊上方選擇城市的界面，城市是按照首字母排好序的，能夠輸入關鍵字搜索，也能夠點擊旁邊的字母索引搜索：
git

這是選擇城市後的界面：
canvas

這是點擊搜索位置懸浮框後的界面，每頁展現十條數據，能夠下拉刷新和加載更多：
api

這是點擊搜索的位置的某一項後展現的界面，首先會在地圖上標示出來，而後會在下面懸浮一個框展現選擇的位置的名字和地址，點擊肯定就能夠拿到該位置的地址+名字：
app

也能夠在地圖頁面隨意點擊，都會在下面懸浮框展現並在地圖上標識出來：
ide

功能基本上就是上面圖片所展現的，雖然比較簡單，但仍是能學到不少東西的，這也是本人第一次使用百度地圖sdk，功能仍是很強大，至於怎樣導入百度sdk什麼的拒不回答，本身看百度傻瓜教程去，下面開始上主要代碼：佈局

這是主界面的佈局文件：測試

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_main_content"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#FFFFFFFF"
    android:orientation="vertical" >

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="50dp"
        android:background="@color/robin_title_bg" >

        <ImageView
            android:id="@+id/robin_title_left"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerVertical="true"
            android:padding="10dp"
            android:src="@drawable/nav_back" />

        <LinearLayout
            android:id="@+id/ll_select_city"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerInParent="true"
            android:gravity="center"
            android:orientation="horizontal" >

            <TextView
                android:id="@+id/robin_title_center"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:padding="3dp"
                android:text="測試"
                android:textColor="@color/robin_white"
                android:textSize="@dimen/robin_font_bigger" />

            <ImageView
                android:layout_width="18dp"
                android:layout_height="18dp"
                android:paddingTop="3dp"
                android:src="@drawable/schedule_city_select" />
        </LinearLayout>

        <TextView
            android:id="@+id/robin_title_right"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentRight="true"
            android:layout_centerVertical="true"
            android:padding="10dp"
            android:text="測試"
            android:textColor="@color/robin_white"
            android:textSize="@dimen/robin_font_big" />
    </RelativeLayout>

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >

        <com.baidu.mapapi.map.MapView
            android:id="@+id/bmapView"
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:clickable="true" />

        <EditText
            android:id="@+id/location_edit"
            android:layout_width="fill_parent"
            android:layout_height="40dp"
            android:layout_alignParentTop="true"
            android:layout_marginLeft="20dp"
            android:layout_marginRight="20dp"
            android:layout_marginTop="8dip"
            android:background="@color/bottom_bar_normal_bg"
            android:drawableLeft="@drawable/search_bar_icon_normal"
            android:editable="false"
            android:hint="輸入搜索關鍵字"
            android:paddingBottom="5dp"
            android:paddingLeft="10dp"
            android:paddingTop="5dp"
            android:singleLine="true"
            android:textSize="15.0dip" />

        <RelativeLayout
            android:id="@+id/rl_location_detail"
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_marginBottom="10dp"
            android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp"
            android:background="@drawable/list_card_bg"
            android:visibility="gone"
           >

            <TextView
                android:id="@+id/tv_location_name"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="10dp"
                android:paddingTop="12dp"
                android:text="A"
                android:singleLine="true"
                android:textColor="@color/robin_black"
                android:textSize="@dimen/robin_font_big" />

            <TextView
                android:id="@+id/tv_location_address"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_gravity="center_vertical"
                android:layout_marginLeft="10dp"
                android:layout_marginTop="6dp"
                android:paddingBottom="12dp"
                android:layout_below="@id/tv_location_name"
                android:singleLine="true"
                android:text="hhhh"
                android:textColor="@color/robin_gray"
                android:textSize="@dimen/robin_font_normal" />

            <Button
                android:id="@+id/bt_finish"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginBottom="8dp"
                android:layout_marginTop="8dp"
                android:padding="10dp"
                android:background="@color/robin_title_bg"
                android:layout_below="@id/tv_location_address"
                android:layout_centerHorizontal="true"
                android:gravity="center"
                android:text="肯定"
                android:textColor="@color/robin_white"
                android:textSize="@dimen/robin_font_big" />
        </RelativeLayout>
    </RelativeLayout>

</LinearLayout>

主界面代碼：ui

package com.haoqi.robin.schedule.activity;

import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.Toast;

import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.BaiduMap.OnMapClickListener;
import com.baidu.mapapi.map.BitmapDescriptor;
import com.baidu.mapapi.map.BitmapDescriptorFactory;
import com.baidu.mapapi.map.MapPoi;
import com.baidu.mapapi.map.MapStatus;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MarkerOptions;
import com.baidu.mapapi.map.OverlayOptions;
import com.baidu.mapapi.model.LatLng;
import com.baidu.mapapi.search.core.SearchResult;
import com.baidu.mapapi.search.geocode.GeoCodeResult;
import com.baidu.mapapi.search.geocode.GeoCoder;
import com.baidu.mapapi.search.geocode.OnGetGeoCoderResultListener;
import com.baidu.mapapi.search.geocode.ReverseGeoCodeOption;
import com.baidu.mapapi.search.geocode.ReverseGeoCodeResult;
import com.baidu.mapapi.search.poi.PoiSearch;
import com.haoqi.robin.R;
import com.haoqi.robin.RobinApplication;
import com.haoqi.robin.schedule.bean.ScheduleCityGpsStruct;

/**
 * 獲取位置功能
 */
public class ScheduleLocationSearchActivity extends FragmentActivity implements OnGetGeoCoderResultListener {

    protected static final int SELECTCITY = 0;
    protected static final int SEARCH_POI = 1;
    GeoCoder mSearch = null;
    private EditText location_edit;
    private String city;
    private LatLng location;
    private MapView mMapView;
    private BaiduMap mBaiduMap;
    private int load_Index = 0;
    private String strAddress;
    private TextView tvTitle;
    private String poiName="";
    private TextView tv_location_name;
    private TextView tv_location_address;
    private RelativeLayout rl_location_detail;
    private String poiAddress;
    
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.schedule_location_list_activity);
        initTitle();
        initView();
        // 初始化搜索模塊，註冊搜索事件監聽
        mSearch = GeoCoder.newInstance();
        mSearch.setOnGetGeoCodeResultListener(this);
        location = new LatLng(RobinApplication.dLat, RobinApplication.dLon);
        mSearch.reverseGeoCode(new ReverseGeoCodeOption().location(location));
        mBaiduMap = mMapView.getMap();
        mMapView.showZoomControls(false);
        MapStatus mMapStatus = new MapStatus.Builder()
        .target(location)
        .zoom(16)
        .build();
        mBaiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(mMapStatus));
        //構建Marker圖標  
        BitmapDescriptor bitmap = BitmapDescriptorFactory  
            .fromResource(R.drawable.bmap_icon_gcoding);  
        //構建MarkerOption，用於在地圖上添加Marker  
        OverlayOptions option = new MarkerOptions()  
            .position(location)  
            .icon(bitmap);  
        //在地圖上添加Marker，並顯示  
        mBaiduMap.addOverlay(option);
        mBaiduMap.setOnMapClickListener(new OnMapClickListener() {
            
            @Override
            public boolean onMapPoiClick(MapPoi arg0) {
                mBaiduMap.clear();
                BitmapDescriptor bitmap = BitmapDescriptorFactory  
                        .fromResource(R.drawable.bmap_icon_marka);  
                    //構建MarkerOption，用於在地圖上添加Marker  
                    OverlayOptions option = new MarkerOptions()  
                        .position(arg0.getPosition())  
                        .icon(bitmap);  
                    //在地圖上添加Marker，並顯示  
                    mBaiduMap.addOverlay(option);
                    poiName = arg0.getName();
                    mSearch.reverseGeoCode(new ReverseGeoCodeOption().location(arg0.getPosition()));
                    rl_location_detail.setVisibility(View.VISIBLE);
                    tv_location_name.setVisibility(View.VISIBLE);
                    tv_location_name.setText(poiName);
                    tv_location_address.setText(poiAddress);
                return true;
            }
            
            @Override
            public void onMapClick(LatLng arg0) {
                mBaiduMap.clear();
                BitmapDescriptor bitmap = BitmapDescriptorFactory  
                        .fromResource(R.drawable.bmap_icon_marka);  
                    //構建MarkerOption，用於在地圖上添加Marker  
                    OverlayOptions option = new MarkerOptions()  
                        .position(arg0)  
                        .icon(bitmap);  
                    //在地圖上添加Marker，並顯示  
                    mBaiduMap.addOverlay(option);
                    mSearch.reverseGeoCode(new ReverseGeoCodeOption().location(arg0));
                    rl_location_detail.setVisibility(View.VISIBLE);
                    tv_location_name.setVisibility(View.GONE);
                    tv_location_address.setText(poiAddress);
            }
        });
        
        location_edit.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                Intent i = new Intent(ScheduleLocationSearchActivity.this, ScheduleSearchCityPoiActivity.class);
                i.putExtra("city", city);
                startActivityForResult(i, SEARCH_POI);
            }
        });
    }

    private void initTitle() {
        ImageView imgBack = (ImageView) findViewById(R.id.robin_title_left);
        imgBack.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                finish();
            }

        });

        tvTitle = (TextView) findViewById(R.id.robin_title_center);
        tvTitle.setText("位置");
        tvTitle.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                Intent i = new Intent(ScheduleLocationSearchActivity.this,ScheduleSelectCityActivity.class);
                startActivityForResult(i, SELECTCITY);
            }
        });
        
        TextView tvRight = (TextView) findViewById(R.id.robin_title_right);

        tvRight.setText("完成");
        tvRight.setVisibility(View.GONE);
    }

    private void initView() {
        location_edit = (EditText) findViewById(R.id.location_edit);
        mMapView = (MapView) findViewById(R.id.bmapView);
        tv_location_name = (TextView) findViewById(R.id.tv_location_name);
        tv_location_address = (TextView) findViewById(R.id.tv_location_address);
        rl_location_detail = (RelativeLayout) findViewById(R.id.rl_location_detail);
        Button bt_finish = (Button) findViewById(R.id.bt_finish);
        bt_finish.setOnClickListener(new OnClickListener() {
            
            @Override
            public void onClick(View v) {
                Intent i = new Intent(); 
                String address = tv_location_address.getText().toString().trim();
                String name;
                if (tv_location_name.isShown()) {
                    name = tv_location_name.getText().toString().trim();
                }else {
                    name = "";
                }
                i.putExtra("location", address+name);
                setResult(RESULT_OK, i);
                finish();
            }
        });
    }


    @Override
    public void onGetGeoCodeResult(GeoCodeResult result) {
    }

    @Override
    public void onGetReverseGeoCodeResult(ReverseGeoCodeResult result) {
        if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(ScheduleLocationSearchActivity.this, "抱歉，未能找到結果",
                    Toast.LENGTH_LONG).show();
            return;
        }
        poiAddress = result.getAddress();
        city = result.getAddressDetail().city;
        strAddress = result.getAddress()+poiName;
        tvTitle.setText(city);
    }

    @Override
    protected void onPause() {
        mMapView.onPause();
        super.onPause();
    }

    @Override
    protected void onResume() {
        mMapView.onResume();
        super.onResume();
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mBaiduMap.clear();
        mMapView.onDestroy();
        mSearch.destroy();
    }
    
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if (requestCode == SELECTCITY && resultCode == RESULT_OK) {
            //選擇城市
            ScheduleCityGpsStruct struct = (ScheduleCityGpsStruct) data.getSerializableExtra("cityItemData");
            String strCityName = struct.getStrCityName();
            rl_location_detail.setVisibility(View.GONE);
            LatLng selectedCity = new LatLng(Double.parseDouble(struct.getStrLatitude()), Double.parseDouble(struct.getStrLongitude()));
            MapStatus mMapStatus = new MapStatus.Builder()
            .target(selectedCity)
            .zoom(12)
            .build();
            mBaiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(mMapStatus));
            mSearch.reverseGeoCode(new ReverseGeoCodeOption().location(selectedCity));
        }else if (requestCode == SEARCH_POI && resultCode == RESULT_OK) {
            //搜索位置
            if (data != null) {
                String searchPoiAddress = data.getStringExtra("address");
                poiName = data.getStringExtra("name");
                double latitude = data.getExtras().getDouble("latitude");
                double longitude = data.getExtras().getDouble("longitude");
                LatLng poiLocation = new LatLng(latitude, longitude);
                rl_location_detail.setVisibility(View.VISIBLE);
                tv_location_name.setVisibility(View.VISIBLE);
                tv_location_name.setText(poiName);
                tv_location_address.setText(searchPoiAddress);
                
                mBaiduMap.clear();
                MapStatus mMapStatus = new MapStatus.Builder()
                .target(poiLocation)
                .zoom(16)
                .build();
                mBaiduMap.setMapStatus(MapStatusUpdateFactory.newMapStatus(mMapStatus));
                BitmapDescriptor bitmap = BitmapDescriptorFactory  
                        .fromResource(R.drawable.bmap_icon_marka);  
                    //構建MarkerOption，用於在地圖上添加Marker  
                    OverlayOptions option = new MarkerOptions()  
                        .position(poiLocation)  
                        .icon(bitmap);  
                    //在地圖上添加Marker，並顯示  
                    mBaiduMap.addOverlay(option);
                    mSearch.reverseGeoCode(new ReverseGeoCodeOption().location(poiLocation));
            }
        }
    }

}

選擇城市代碼：

package com.haoqi.robin.schedule.activity;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import com.haoqi.robin.R;
import com.haoqi.robin.schedule.adapter.ScheduleCitySelectAdapter;
import com.haoqi.robin.schedule.bean.ScheduleCityGpsStruct;
import com.haoqi.robin.ui.contact.ClearEditText;
import com.haoqi.robin.ui.contact.SideBar;
import com.haoqi.robin.ui.contact.SideBar.OnTouchingLetterChangedListener;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.AdapterView;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.AdapterView.OnItemClickListener;

public class ScheduleSelectCityActivity extends Activity {

    private ListView sortListView;
    private SideBar sideBar;
    private TextView dialog;
    private ClearEditText mClearEditText;

    private List<ScheduleCityGpsStruct> cityList, currentCityList;
    private ScheduleCitySelectAdapter adapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.schedule_select_city_activity);
        initTitle();
        initView();
        loadData();
    }

    private void initTitle() {
        ImageView imgBack = (ImageView) findViewById(R.id.robin_title_left);
        imgBack.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                finish();
            }

        });

        TextView tvTitle = (TextView) findViewById(R.id.robin_title_center);
        tvTitle.setText("選擇城市");

        TextView tvRight = (TextView) findViewById(R.id.robin_title_right);
        tvRight.setVisibility(View.GONE);
    }

    private void initView() {
        sideBar = (SideBar) findViewById(R.id.city_sidrbar);
        dialog = (TextView) findViewById(R.id.dialog);
        sideBar.setTextView(dialog);

        sideBar.setOnTouchingLetterChangedListener(new OnTouchingLetterChangedListener() {

            @Override
            public void onTouchingLetterChanged(String s) {
                int position = adapter.getPositionForSection(s);
                if (position != -1) {
                    sortListView.setSelection(position);
                }
            }
        });

        sortListView = (ListView) findViewById(R.id.city_lvcountry);
        sortListView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                ScheduleCityGpsStruct struct = currentCityList.get(position);
                Intent i = new Intent();
                Bundle bundle = new Bundle();
                bundle.putSerializable("cityItemData", struct);
                i.putExtras(bundle);
                setResult(RESULT_OK, i);
                finish();
            }
        });

        mClearEditText = (ClearEditText) findViewById(R.id.city_filter_edit);
        mClearEditText.addTextChangedListener(new TextWatcher() {

            @Override
            public void onTextChanged(CharSequence s, int start, int before,
                    int count) {
                filterData(s.toString());
            }

            @Override
            public void beforeTextChanged(CharSequence s, int start, int count,
                    int after) {

            }

            @Override
            public void afterTextChanged(Editable s) {
            }
        });
    }

    

    private void loadData() {
        cityList = new ArrayList<ScheduleCityGpsStruct>();
        try {
            InputStream is = getAssets().open("city_gps.txt");
            InputStreamReader isr = new InputStreamReader(is);
            BufferedReader br = new BufferedReader(isr);
            String line = "";
            String[] arrs = null;
            while ((line = br.readLine()) != null) {
                ScheduleCityGpsStruct sGpsStruct = new ScheduleCityGpsStruct();
                arrs = line.split(",");
                if (arrs.length == 4) {
                    sGpsStruct.setSortLetters(arrs[0]);
                    sGpsStruct.setStrCityName(arrs[1]);
                    sGpsStruct.setStrLongitude(arrs[2]);
                    sGpsStruct.setStrLatitude(arrs[3]);
                }else if (arrs.length == 3) {
                    sGpsStruct.setSortLetters("");
                    sGpsStruct.setStrCityName(arrs[0]);
                    sGpsStruct.setStrLongitude(arrs[1]);
                    sGpsStruct.setStrLatitude(arrs[2]);
                }
                cityList.add(sGpsStruct);
            }
            
            br.close();
            isr.close();
            is.close();
            currentCityList = cityList;
            adapter = new ScheduleCitySelectAdapter(this, cityList);
            sortListView.setAdapter(adapter);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void filterData(String filterStr) {
        List<ScheduleCityGpsStruct> filterDateList = new ArrayList<ScheduleCityGpsStruct>();
        if (TextUtils.isEmpty(filterStr)) {
            filterDateList = cityList;
        } else {
            filterDateList.clear();
            for (ScheduleCityGpsStruct struct : cityList) {
                String strCityName = struct.getStrCityName();
                if (strCityName.contains(filterStr.toString())) {
                    filterDateList.add(struct);
                }
            }
            currentCityList = filterDateList;
        }
        adapter.updateListView(filterDateList);
    }
    
    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_DOWN) {
            finish();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }
}

選擇城市的適配器代碼：

package com.haoqi.robin.schedule.adapter;

import java.util.List;

import com.haoqi.robin.R;
import com.haoqi.robin.schedule.bean.ScheduleCityGpsStruct;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.SectionIndexer;
import android.widget.TextView;

public class ScheduleCitySelectAdapter extends BaseAdapter implements
        SectionIndexer {
    private List<ScheduleCityGpsStruct> list = null;
    private Context mContext;

    public ScheduleCitySelectAdapter(Context mContext,
            List<ScheduleCityGpsStruct> list) {
        this.mContext = mContext;
        this.list = list;
    }

    /**
     * @param list
     */
    public void updateListView(List<ScheduleCityGpsStruct> list) {
        this.list = list;
        notifyDataSetChanged();
    }

    public int getCount() {
        return this.list.size();
    }

    public Object getItem(int position) {
        return list.get(position);
    }

    public long getItemId(int position) {
        return position;
    }

    public View getView(final int position, View view, ViewGroup arg2) {
        ViewHolder viewHolder = null;
        if (view == null) {
            viewHolder = new ViewHolder();
            view = LayoutInflater.from(mContext).inflate(
                    R.layout.schedule_select_city_item, null);
            viewHolder.tvTitle = (TextView) view
                    .findViewById(R.id.city_list_item_name);
            viewHolder.tvLetter = (TextView) view
                    .findViewById(R.id.city_list_item_catalog);
            view.setTag(viewHolder);
        } else {
            viewHolder = (ViewHolder) view.getTag();
        }
        ScheduleCityGpsStruct struct = list.get(position);
        // 首字母
        String sortLetters = struct.getSortLetters();
        if (sortLetters != null && sortLetters.length() > 0) {
            if (position == getPositionForSection(position, sortLetters)) {
                viewHolder.tvLetter.setVisibility(View.VISIBLE);
                viewHolder.tvLetter.setText(sortLetters);
            }
        }else {
            viewHolder.tvLetter.setVisibility(View.GONE);
        }

        viewHolder.tvTitle.setText(struct.getStrCityName());

        return view;

    }

    final static class ViewHolder {
        TextView tvLetter;
        TextView tvTitle;
    }

    public int getPositionForSection(String section) {
        for (int i = 0; i < getCount(); i++) {
            String sortStr = list.get(i).getSortLetters();
            if (section.equals(sortStr)) {
                return i;
            }
        }

        return -1;
    }

    public int getPositionForSection(int iPosition, String section) {
        for (int i = 0; i < getCount(); i++) {
            String sortStr = list.get(i).getSortLetters();
            if (section.equals(sortStr)) {
                return i;
            }
        }
        return -1;
    }

    @Override
    public Object[] getSections() {
        return null;
    }

    @Override
    public int getPositionForSection(int sectionIndex) {
        return 0;
    }

    @Override
    public int getSectionForPosition(int position) {
        return 0;
    }

}

查找城市內poi的代碼：

package com.haoqi.robin.schedule.activity;

import java.util.ArrayList;
import java.util.List;

import com.baidu.mapapi.model.LatLng;
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.PoiResult;
import com.baidu.mapapi.search.poi.PoiSearch;
import com.haoqi.robin.R;
import com.haoqi.robin.schedule.adapter.ScheduleSearchCityPoiAdapter;
import com.haoqi.robin.ui.ProgressView;
import com.haoqi.robin.ui.XListView;
import com.haoqi.robin.ui.XListView.IXListViewListener;
import com.haoqi.robin.ui.contact.ClearEditText;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.view.inputmethod.InputMethodManager;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class ScheduleSearchCityPoiActivity extends Activity implements
        OnGetPoiSearchResultListener{

    private XListView poiListView;
    private ClearEditText mSearchEditText;
    private PoiSearch mPoiSearch = null;
    private int load_Index = 0;
    private List<PoiInfo> poiList;
    private ScheduleSearchCityPoiAdapter adapter;
    private ProgressView pgLoading;
    private Boolean bLoading = false;
    private String keyWord;
    private String city;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.schedule_search_city_poi_activity);
        city = getIntent().getStringExtra("city");
        mPoiSearch = PoiSearch.newInstance();
        mPoiSearch.setOnGetPoiSearchResultListener(this);
        initTitle();
        initView();
    }

    private void initTitle() {
        ImageView imgBack = (ImageView) findViewById(R.id.robin_title_left);
        imgBack.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                finish();
            }

        });

        TextView tvTitle = (TextView) findViewById(R.id.robin_title_center);
        tvTitle.setText("查找位置");

        TextView tvRight = (TextView) findViewById(R.id.robin_title_right);
        tvRight.setVisibility(View.VISIBLE);
        tvRight.setText("搜索");
        tvRight.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                keyWord = mSearchEditText.getText().toString().trim();
                hideKeyboard();
                if (keyWord != null && keyWord.length() > 0) {
                    pgLoading.setVisibility(View.VISIBLE);
                    loadData(keyWord);
                } else {
                    Toast.makeText(getApplicationContext(), "您尚未輸入搜索地點", 0)
                            .show();
                    return;
                }
            }
        });
    }

    private void initView() {
        pgLoading = (ProgressView) findViewById(R.id.search_poi_progress);
        mSearchEditText = (ClearEditText) findViewById(R.id.pio_filter_edit);
        poiListView = (XListView) findViewById(R.id.schedule_search_pio);
        poiList = new ArrayList<PoiInfo>();
        
    }

    private void loadData(String keyWord) {
        load_Index = 0;
        mPoiSearch.searchInCity((new PoiCitySearchOption()).city(city)
                .keyword(keyWord).pageNum(load_Index));
    }

    protected void loadMoreData() {
        load_Index++;
        mPoiSearch.searchInCity((new PoiCitySearchOption()).city(city)
                .keyword(keyWord).pageNum(load_Index));
    }

    @Override
    public void onGetPoiDetailResult(PoiDetailResult result) {
        if (result.error != SearchResult.ERRORNO.NO_ERROR) {
            Toast.makeText(ScheduleSearchCityPoiActivity.this, "抱歉，未找到結果",
                    Toast.LENGTH_SHORT).show();
        } else {
            Toast.makeText(ScheduleSearchCityPoiActivity.this,
                    result.getName() + ": " + result.getAddress(),
                    Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    public void onGetPoiResult(PoiResult result) {
        pgLoading.loadSuccess();
        pgLoading.setVisibility(View.GONE);
        poiListView.setVisibility(View.VISIBLE);
        if (result == null
                || result.error == SearchResult.ERRORNO.RESULT_NOT_FOUND) {
            Toast.makeText(ScheduleSearchCityPoiActivity.this, "未找到結果",
                    Toast.LENGTH_LONG).show();
            stopRefresh();
            return;
        }
        if (result.error == SearchResult.ERRORNO.NO_ERROR) {
            List<PoiInfo> allPoi = result.getAllPoi();
            if (adapter != null) {
                if (load_Index == 0) {//刷新
                    refreshPoiList(allPoi);
                }else {
                    updatePoiList(allPoi);
                }
            }else {
                bLoading = false;
                renderPoiList(allPoi);
            }
            return;
        }
        if (result.error == SearchResult.ERRORNO.AMBIGUOUS_KEYWORD) {

            // 當輸入關鍵字在本市沒有找到，但在其餘城市找到時，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(ScheduleSearchCityPoiActivity.this, strInfo,
                    Toast.LENGTH_LONG).show();
            stopRefresh();
        }
    }

    private void refreshPoiList(List<PoiInfo> allPoi) {
        poiList.clear();
        poiList.addAll(allPoi);
        adapter.notifyDataSetChanged();
        stopRefresh();
    }

    private void renderPoiList(List<PoiInfo> allPoi) {
        poiList = allPoi;
        adapter = new ScheduleSearchCityPoiAdapter(
                ScheduleSearchCityPoiActivity.this, poiList);
        poiListView.setAdapter(adapter);
        poiListView.setPullRefreshEnable(true);
        poiListView.setPullLoadEnable(true);
        poiListView.setXListViewListener(new IXListViewListener() {

            @Override
            public void onRefresh() {
                if (bLoading)
                    return;
                bLoading = true;
                loadData(keyWord);
            }

            @Override
            public void onLoadMore() {
                if (bLoading)
                    return;
                bLoading = true;
                loadMoreData();
            }

        });
        
        poiListView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view,
                    int position, long id) {
                PoiInfo poiInfo = poiList.get(position-1);
                String strAddress = poiInfo.address;
                String strName = poiInfo.name;
                LatLng location = poiInfo.location;
                Intent intent = new Intent();
                intent.putExtra("address", strAddress);
                intent.putExtra("name", strName);
                intent.putExtra("latitude", location.latitude);
                intent.putExtra("longitude", location.longitude);
                setResult(RESULT_OK, intent);
                finish();
            }
            
        });
    }
    
    private void updatePoiList(List<PoiInfo> allPoi) {
        poiList.addAll(allPoi);
        adapter.notifyDataSetChanged();
        stopRefresh();
    }
    
    private void stopRefresh(){
        poiListView.stopLoadMore();
        poiListView.stopRefresh();
        bLoading = false;
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_BACK
                && event.getAction() == KeyEvent.ACTION_DOWN) {
            finish();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    /**
     * 隱藏軟鍵盤
     */
    private void hideKeyboard() {
        InputMethodManager manager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
        if (getWindow().getAttributes().softInputMode != WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN) {
            if (getCurrentFocus() != null)
                manager.hideSoftInputFromWindow(getCurrentFocus()
                        .getWindowToken(), InputMethodManager.HIDE_NOT_ALWAYS);
        }
    }
    
    @Override
    protected void onDestroy() {
        super.onDestroy();
        mPoiSearch.destroy();
    }
}

大概就是這麼多了，有須要的能夠借鑑參考一下，互相交流，共同進步，大神勿笑。另外，在城市列表那個我是讀取的assets目錄裏的一個txt文件，裏面是城市和其對應的座標。

城市列表旁邊那個索引用的是自定義的sideBar，也是網上下載的，代碼以下：

package com.haoqi.robin.ui.contact;

import com.haoqi.robin.R;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.graphics.drawable.ColorDrawable;
import android.util.AttributeSet;
import android.view.MotionEvent;
import android.view.View;
import android.widget.TextView;

public class SideBar extends View {
    // �����¼�
    private OnTouchingLetterChangedListener onTouchingLetterChangedListener;
    // 26����ĸ
    public static String[] b = { "A", "B", "C", "D", "E", "F", "G", "H", "I",
            "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
            "W", "X", "Y", "Z", "#" };
    private int choose = -1;// ѡ��
    private Paint paint = new Paint();

    private TextView mTextDialog;

    public void setTextView(TextView mTextDialog) {
        this.mTextDialog = mTextDialog;
    }


    public SideBar(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public SideBar(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public SideBar(Context context) {
        super(context);
    }

    /**
     * ��д�������
     */
    protected void onDraw(Canvas canvas) {
        super.onDraw(canvas);
        // ��ȡ����ı䱳����ɫ.
        int height = getHeight();// ��ȡ��Ӧ�߶�
        int width = getWidth(); // ��ȡ��Ӧ���
        int singleHeight = height / b.length;// ��ȡÿһ����ĸ�ĸ߶�

        for (int i = 0; i < b.length; i++) {
            paint.setColor(Color.rgb(33, 65, 98));
            // paint.setColor(Color.WHITE);
            paint.setTypeface(Typeface.DEFAULT_BOLD);
            paint.setAntiAlias(true);
            paint.setTextSize(25);
            // ѡ�е�״̬
            if (i == choose) {
                paint.setColor(Color.parseColor("#3399ff"));
                paint.setFakeBoldText(true);
            }
            // x�������м�-�ַ��ȵ�һ��.
            float xPos = width / 2 - paint.measureText(b[i]) / 2;
            float yPos = singleHeight * i + singleHeight;
            canvas.drawText(b[i], xPos, yPos, paint);
            paint.reset();// ���û���
        }

    }

    @Override
    public boolean dispatchTouchEvent(MotionEvent event) {
        final int action = event.getAction();
        final float y = event.getY();
        final int oldChoose = choose;
        final OnTouchingLetterChangedListener listener = onTouchingLetterChangedListener;
        final int c = (int) (y / getHeight() * b.length);

        switch (action) {
        case MotionEvent.ACTION_UP:
            setBackgroundDrawable(new ColorDrawable(0x00000000));
            choose = -1;//
            invalidate();
            if (mTextDialog != null) {
                mTextDialog.setVisibility(View.INVISIBLE);
            }
            break;

        default:
            setBackgroundResource(R.drawable.sidebar_background);
            if (oldChoose != c) {
                if (c >= 0 && c < b.length) {
                    if (listener != null) {
                        listener.onTouchingLetterChanged(b[c]);
                    }
                    if (mTextDialog != null) {
                        mTextDialog.setText(b[c]);
                        mTextDialog.setVisibility(View.VISIBLE);
                    }
                    
                    choose = c;
                    invalidate();
                }
            }

            break;
        }
        return true;
    }

    /**
     * 
     * @param onTouchingLetterChangedListener
     */
    public void setOnTouchingLetterChangedListener(
            OnTouchingLetterChangedListener onTouchingLetterChangedListener) {
        this.onTouchingLetterChangedListener = onTouchingLetterChangedListener;
    }

    /**
     * �ӿ�
     * 
     * @author coder
     * 
     */
    public interface OnTouchingLetterChangedListener {
        public void onTouchingLetterChanged(String s);
    }

}

搜索城市裏poi那個界面用的是支持下拉刷新和加載的XListView控件，差很少代碼都貼出來了，暫時就這麼多。