原文:http://blog.youkuaiyun.com/hedong_77/article/details/54140954
先来个效果图:
蓝色的marker就是点击的,蓝色的圆圈是我当前位置。
apk下载地址:http://download.youkuaiyun.com/detail/hedong_77/9731739
一些基本操作这里就不多说了,自己去看官方文档,我们这里说一下周边搜索和POI计算距离。
首先定位一下自己当前位置,因为我要拿到当前的位置的经纬度,后面有用:
/**
* 设置一些amap的属性
*/
private void setUpLocation() {
mAMap.setLocationSource(this);
mAMap.getUiSettings().setMyLocationButtonEnabled(true);
mAMap.setMyLocationEnabled(true);
mAMap.setMyLocationType(AMap.LOCATION_TYPE_LOCATE);
}
/**
* 定位成功后回调函数
*/
@Override
public void onLocationChanged(AMapLocation amapLocation) {
if (mListener != null && amapLocation != null) {
if (amapLocation != null
&& amapLocation.getErrorCode() == 0) {
amapLocation.getLocationType();
myLat = amapLocation.getLatitude();
myLongt = amapLocation.getLongitude();
amapLocation.getAccuracy();
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = new Date(amapLocation.getTime());
df.format(date);
amapLocation.getAddress();
amapLocation.getCountry();
amapLocation.getProvince();
amapLocation.getCity();
amapLocation.getDistrict();
amapLocation.getStreet();
amapLocation.getStreetNum();
amapLocation.getCityCode();
amapLocation.getAdCode();
TextView textView = (TextView) findViewById(R.id.city_detail);
textView.setText(amapLocation.getCity() + "=" + amapLocation.getDistrict() + "==" + amapLocation.getStreetNum());
mListener.onLocationChanged(amapLocation);
} else {
String errText = "定位失败," + amapLocation.getErrorCode() + ": " + amapLocation.getErrorInfo();
Log.e("AmapErr", errText);
}
}
}
/**
* 激活定位
*/
@Override
public void activate(OnLocationChangedListener listener) {
mListener = listener;
if (mlocationClient == null) {
mlocationClient = new AMapLocationClient(this);
mLocationOption = new AMapLocationClientOption();
mlocationClient.setLocationListener(this);
mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
mlocationClient.setLocationOption(mLocationOption);
mlocationClient.startLocation();
}
}
/**
* 停止定位
*/
@Override
public void deactivate() {
mListener = null;
if (mlocationClient != null) {
mlocationClient.stopLocation();
mlocationClient.onDestroy();
}
mlocationClient = null;
}
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可以看到,定位成功之后我们可以拿到任何想要的数据。
一步步来,先初始化一下数据,
/**
* 初始化AMap对象
*/
private void init() {
if (mAMap == null) {
mAMap = mapview.getMap();
mAMap.setOnMapClickListener(this);
mAMap.setOnMarkerClickListener(this);
mAMap.setOnInfoWindowClickListener(this);
mAMap.setInfoWindowAdapter(this);
TextView searchButton = (TextView) findViewById(R.id.btn_search);
searchButton.setOnClickListener(this);
setUpLocation();
locationMarker = mAMap.addMarker(new MarkerOptions()
.anchor(0.5f, 0.5f)
.icon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(getResources(), R.mipmap.point4)))
.position(new LatLng(myLat, myLongt)));
locationMarker.showInfoWindow();
}
setup();
mAMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(myLat, myLongt), 14));
tvDistance = (TextView) findViewById(R.id.poi_info);
}
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我们可以根据自己想要的去搜索
/**
* 开始进行poi搜索
*/
protected void doSearchQuery() {
keyWord = mSearchText.getText().toString().trim();
currentPage = 0;
query = new PoiSearch.Query(keyWord, "", "");
query.setPageSize(20);
query.setPageNum(currentPage);
LatLonPoint lp = new LatLonPoint(myLat, myLongt);
if (lp != null) {
poiSearch = new PoiSearch(this, query);
poiSearch.setOnPoiSearchListener(this);
poiSearch.setBound(new SearchBound(lp, 10000, true));
poiSearch.searchPOIAsyn();
}
}```
搜索的结果会在 public void onPoiSearched(PoiResult result, int rcode) 里面来做,如果rcode==1000那就是搜索成功了
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@Override
public void onPoiSearched(PoiResult result, int rcode) {
if (rcode == AMapException.CODE_AMAP_SUCCESS) {
if (result != null && result.getQuery() != null) {// 搜索poi的结果
if (result.getQuery().equals(query)) {// 是否是同一条
poiResult = result;
poiItems = poiResult.getPois();// 取得第一页的poiitem数据,页数从数字0开始
List<SuggestionCity> suggestionCities = poiResult
.getSearchSuggestionCitys();// 当搜索不到poiitem数据时,会返回含有搜索关键字的城市信息
if (poiItems != null && poiItems.size() > 0) {
//清除POI信息显示
whetherToShowDetailInfo(false);
//并还原点击marker样式
if (mlastMarker != null) {
resetlastmarker();
}
//清理之前搜索结果的marker
if (poiOverlay != null) {
poiOverlay.removeFromMap();
}
mAMap.clear();
poiOverlay = new myPoiOverlay(mAMap, poiItems);
poiOverlay.addToMap();
poiOverlay.zoomToSpan();
mAMap.addMarker(new MarkerOptions()
.anchor(0.5f, 0.5f)
.icon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(
getResources(), R.mipmap.point4)))
.position(new LatLng(myLat, myLongt)));
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// mAMap.addCircle(new CircleOptions()
// .center(new LatLng(myLat, myLongt)).radius(5000)
// .strokeColor(Color.BLUE)
// .fillColor(Color.argb(50, 1, 1, 1))
// .strokeWidth(2));
} else if (suggestionCities != null
&& suggestionCities.size() > 0) {
showSuggestCity(suggestionCities);
} else {
ToastUtil.show(PoiAroundSearchActivity.this,
R.string.no_result);
}
}
} else {
ToastUtil
.show(PoiAroundSearchActivity.this, R.string.no_result);
}
} else {
ToastUtil.showerror(this.getApplicationContext(), rcode);
}
}
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接下来要做的就是根据搜索到的marker,当用户点击这个marker的时候,就计算出用户当前点击的marker到用户之间的距离。
@Override
public boolean onMarkerClick(Marker marker) {
if (marker.getObject() != null) {
whetherToShowDetailInfo(true);
try {
PoiItem mCurrentPoi = (PoiItem) marker.getObject();
if (mlastMarker == null) {
mlastMarker = marker;
} else {
// 将之前被点击的marker置为原来的状态
resetlastmarker();
mlastMarker = marker;
}
detailMarker = marker;
detailMarker.setIcon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(
getResources(),
R.mipmap.poi_marker_pressed)));
setPoiItemDisplayContent(mCurrentPoi);
} catch (Exception e) {
// TODO: handle exception
}
} else {
whetherToShowDetailInfo(false);
resetlastmarker();
}
//我的当前位置与点击的marker的距离
LatLng latlngA = new LatLng(myLat, myLongt);
distance = AMapUtils.calculateLineDistance(latlngA, marker.getPosition());
tvDistance.setText("两点间距离为:" + distance + "m");
return true;
}
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这里我只是显示十个marker。
怎么把marker添加到地图里面呢,我们自己定义一个类吧,
/**
* 自定义PoiOverlay
*/
private class myPoiOverlay {
private AMap mamap;
private List<PoiItem> mPois;
private ArrayList<Marker> mPoiMarks = new ArrayList<Marker>();
public myPoiOverlay(AMap amap, List<PoiItem> pois) {
mamap = amap;
mPois = pois;
}
/**
* 添加Marker到地图中。
*
* @since V2.1.0
*/
public void addToMap() {
for (int i = 0; i < mPois.size(); i++) {
Marker marker = mamap.addMarker(getMarkerOptions(i));
PoiItem item = mPois.get(i);
marker.setObject(item);
mPoiMarks.add(marker);
}
}
/**
* 去掉PoiOverlay上所有的Marker。
*
* @since V2.1.0
*/
public void removeFromMap() {
for (Marker mark : mPoiMarks) {
mark.remove();
}
}
/**
* 移动镜头到当前的视角。
*
* @since V2.1.0
*/
public void zoomToSpan() {
if (mPois != null && mPois.size() > 0) {
if (mamap == null)
return;
LatLngBounds bounds = getLatLngBounds();
mamap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 100));
}
}
private LatLngBounds getLatLngBounds() {
LatLngBounds.Builder b = LatLngBounds.builder();
for (int i = 0; i < mPois.size(); i++) {
b.include(new LatLng(mPois.get(i).getLatLonPoint().getLatitude(),
mPois.get(i).getLatLonPoint().getLongitude()));
}
return b.build();
}
private MarkerOptions getMarkerOptions(int index) {
return new MarkerOptions()
.position(
new LatLng(mPois.get(index).getLatLonPoint()
.getLatitude(), mPois.get(index)
.getLatLonPoint().getLongitude()))
.title(getTitle(index)).snippet(getSnippet(index))
.icon(getBitmapDescriptor(index));
}
protected String getTitle(int index) {
return mPois.get(index).getTitle();
}
protected String getSnippet(int index) {
return mPois.get(index).getSnippet();
}
/**
* 从marker中得到poi在list的位置。
*
* @param marker 一个标记的对象。
* @return 返回该marker对应的poi在list的位置。
* @since V2.1.0
*/
public int getPoiIndex(Marker marker) {
for (int i = 0; i < mPoiMarks.size(); i++) {
if (mPoiMarks.get(i).equals(marker)) {
return i;
}
}
return -1;
}
/**
* 返回第index的poi的信息。
*
* @param index 第几个poi。
* @return poi的信息。poi对象详见搜索服务模块的基础核心包(com.amap.api.services.core)中的类 <strong><a href="../../../../../../Search/com/amap/api/services/core/PoiItem.html" title="com.amap.api.services.core中的类">PoiItem</a></strong>。
* @since V2.1.0
*/
public PoiItem getPoiItem(int index) {
if (index < 0 || index >= mPois.size()) {
return null;
}
return mPois.get(index);
}
protected BitmapDescriptor getBitmapDescriptor(int arg0) {
if (arg0 < 10) {
BitmapDescriptor icon = BitmapDescriptorFactory.fromBitmap(
BitmapFactory.decodeResource(getResources(), markers[arg0]));
return icon;
} else {
BitmapDescriptor icon = BitmapDescriptorFactory.fromBitmap(
BitmapFactory.decodeResource(getResources(), R.mipmap.marker_other_highlight));
return icon;
}
}
}
代码解释很全面,应该看懂没问题了。主要代码也就这么多。
贴一个全面的类给大家参考:
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import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.EditText;
import android.widget.RelativeLayout;
import android.widget.TextView;
import com.amap.api.location.AMapLocation;
import com.amap.api.location.AMapLocationClient;
import com.amap.api.location.AMapLocationClientOption;
import com.amap.api.location.AMapLocationListener;
import com.amap.api.maps.AMap;
import com.amap.api.maps.AMap.InfoWindowAdapter;
import com.amap.api.maps.AMap.OnInfoWindowClickListener;
import com.amap.api.maps.AMap.OnMapClickListener;
import com.amap.api.maps.AMap.OnMarkerClickListener;
import com.amap.api.maps.AMapUtils;
import com.amap.api.maps.CameraUpdateFactory;
import com.amap.api.maps.LocationSource;
import com.amap.api.maps.MapView;
import com.amap.api.maps.model.BitmapDescriptor;
import com.amap.api.maps.model.BitmapDescriptorFactory;
import com.amap.api.maps.model.LatLng;
import com.amap.api.maps.model.LatLngBounds;
import com.amap.api.maps.model.Marker;
import com.amap.api.maps.model.MarkerOptions;
import com.amap.api.services.core.AMapException;
import com.amap.api.services.core.LatLonPoint;
import com.amap.api.services.core.PoiItem;
import com.amap.api.services.core.SuggestionCity;
import com.amap.api.services.poisearch.PoiResult;
import com.amap.api.services.poisearch.PoiSearch;
import com.amap.api.services.poisearch.PoiSearch.OnPoiSearchListener;
import com.amap.api.services.poisearch.PoiSearch.SearchBound;
import com.example.donghe.maptest.utils.ToastUtil;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
/**
* 周边搜索
*/
public class PoiAroundSearchActivity extends AppCompatActivity implements OnClickListener,
OnMapClickListener, OnInfoWindowClickListener, InfoWindowAdapter, OnMarkerClickListener,
OnPoiSearchListener, LocationSource,
AMapLocationListener {
private MapView mapview;
private AMap mAMap;
private PoiResult poiResult; // poi返回的结果
private int currentPage = 0;// 当前页面,从0开始计数
private PoiSearch.Query query;// Poi查询条件类
private Marker locationMarker; // 选择的点
private Marker detailMarker;
private Marker mlastMarker;
private PoiSearch poiSearch;
private myPoiOverlay poiOverlay;// poi图层
private List<PoiItem> poiItems;// poi数据
private RelativeLayout mPoiDetail;
private TextView mPoiName, mPoiAddress;
private String keyWord = "";
private EditText mSearchText;
private TextView tvDistance;
private float distance;
private Double myLat = 0.0, myLongt = 0.0;//我的当前位置的经纬度
//定位
private OnLocationChangedListener mListener;
private AMapLocationClient mlocationClient;
private AMapLocationClientOption mLocationOption;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.poiaroundsearch_activity);
mapview = (MapView) findViewById(R.id.mapView);
mapview.onCreate(savedInstanceState);
init();
}
/**
* 初始化AMap对象
*/
private void init() {
if (mAMap == null) {
mAMap = mapview.getMap();
mAMap.setOnMapClickListener(this);
mAMap.setOnMarkerClickListener(this);
mAMap.setOnInfoWindowClickListener(this);
mAMap.setInfoWindowAdapter(this);
TextView searchButton = (TextView) findViewById(R.id.btn_search);
searchButton.setOnClickListener(this);
setUpLocation();
locationMarker = mAMap.addMarker(new MarkerOptions()
.anchor(0.5f, 0.5f)
.icon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(getResources(), R.mipmap.point4)))
.position(new LatLng(myLat, myLongt)));
locationMarker.showInfoWindow();
}
setup();
mAMap.moveCamera(CameraUpdateFactory.newLatLngZoom(new LatLng(myLat, myLongt), 14));
tvDistance = (TextView) findViewById(R.id.poi_info);
}
private void setup() {
mPoiDetail = (RelativeLayout) findViewById(R.id.poi_detail);
mPoiDetail.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
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// Intent intent = new Intent(PoiSearchActivity.this,
// SearchDetailActivity.class);
// intent.putExtra(“poiitem”, mPoi);
// startActivity(intent);
}
});
mPoiName = (TextView) findViewById(R.id.poi_name);
mPoiAddress = (TextView) findViewById(R.id.poi_address);
mSearchText = (EditText) findViewById(R.id.input_edittext);
}
/**
* 开始进行poi搜索
*/
protected void doSearchQuery() {
keyWord = mSearchText.getText().toString().trim();
currentPage = 0;
query = new PoiSearch.Query(keyWord, "", "");// 第一个参数表示搜索字符串,第二个参数表示poi搜索类型,第三个参数表示poi搜索区域(空字符串代表全国)
query.setPageSize(20);// 设置每页最多返回多少条poiitem
query.setPageNum(currentPage);// 设置查第一页
LatLonPoint lp = new LatLonPoint(myLat, myLongt);
if (lp != null) {
poiSearch = new PoiSearch(this, query);
poiSearch.setOnPoiSearchListener(this);
poiSearch.setBound(new SearchBound(lp, 10000, true));//
// 设置搜索区域为以lp点为圆心,其周围10000米范围
poiSearch.searchPOIAsyn();// 异步搜索
}
}
/**
* 方法必须重写
*/
@Override
protected void onResume() {
super.onResume();
mapview.onResume();
whetherToShowDetailInfo(false);
}
/**
* 方法必须重写
*/
@Override
protected void onPause() {
super.onPause();
mapview.onPause();
}
/**
* 方法必须重写
*/
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
mapview.onSaveInstanceState(outState);
}
/**
* 方法必须重写
*/
@Override
protected void onDestroy() {
super.onDestroy();
mapview.onDestroy();
}
@Override
public void onPoiItemSearched(PoiItem arg0, int arg1) {
// TODO Auto-generated method stub
}
@Override
public void onPoiSearched(PoiResult result, int rcode) {
if (rcode == AMapException.CODE_AMAP_SUCCESS) {
if (result != null && result.getQuery() != null) {// 搜索poi的结果
if (result.getQuery().equals(query)) {// 是否是同一条
poiResult = result;
poiItems = poiResult.getPois();// 取得第一页的poiitem数据,页数从数字0开始
List<SuggestionCity> suggestionCities = poiResult
.getSearchSuggestionCitys();// 当搜索不到poiitem数据时,会返回含有搜索关键字的城市信息
if (poiItems != null && poiItems.size() > 0) {
//清除POI信息显示
whetherToShowDetailInfo(false);
//并还原点击marker样式
if (mlastMarker != null) {
resetlastmarker();
}
//清理之前搜索结果的marker
if (poiOverlay != null) {
poiOverlay.removeFromMap();
}
mAMap.clear();
poiOverlay = new myPoiOverlay(mAMap, poiItems);
poiOverlay.addToMap();
poiOverlay.zoomToSpan();
mAMap.addMarker(new MarkerOptions()
.anchor(0.5f, 0.5f)
.icon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(
getResources(), R.mipmap.point4)))
.position(new LatLng(myLat, myLongt)));
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// mAMap.addCircle(new CircleOptions()
// .center(new LatLng(myLat, myLongt)).radius(5000)
// .strokeColor(Color.BLUE)
// .fillColor(Color.argb(50, 1, 1, 1))
// .strokeWidth(2));
} else if (suggestionCities != null
&& suggestionCities.size() > 0) {
showSuggestCity(suggestionCities);
} else {
ToastUtil.show(PoiAroundSearchActivity.this,
R.string.no_result);
}
}
} else {
ToastUtil
.show(PoiAroundSearchActivity.this, R.string.no_result);
}
} else {
ToastUtil.showerror(this.getApplicationContext(), rcode);
}
}
@Override
public boolean onMarkerClick(Marker marker) {
if (marker.getObject() != null) {
whetherToShowDetailInfo(true);
try {
PoiItem mCurrentPoi = (PoiItem) marker.getObject();
if (mlastMarker == null) {
mlastMarker = marker;
} else {
// 将之前被点击的marker置为原来的状态
resetlastmarker();
mlastMarker = marker;
}
detailMarker = marker;
detailMarker.setIcon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(
getResources(),
R.mipmap.poi_marker_pressed)));
setPoiItemDisplayContent(mCurrentPoi);
} catch (Exception e) {
// TODO: handle exception
}
} else {
whetherToShowDetailInfo(false);
resetlastmarker();
}
//我的当前位置与点击的marker的距离
LatLng latlngA = new LatLng(myLat, myLongt);
distance = AMapUtils.calculateLineDistance(latlngA, marker.getPosition());
tvDistance.setText("两点间距离为:" + distance + "m");
return true;
}
// 将之前被点击的marker置为原来的状态
private void resetlastmarker() {
int index = poiOverlay.getPoiIndex(mlastMarker);
if (index < 10) {
mlastMarker.setIcon(BitmapDescriptorFactory
.fromBitmap(BitmapFactory.decodeResource(
getResources(),
markers[index])));
} else {
mlastMarker.setIcon(BitmapDescriptorFactory.fromBitmap(
BitmapFactory.decodeResource(getResources(), R.mipmap.marker_other_highlight)));
}
mlastMarker = null;
}
private void setPoiItemDisplayContent(final PoiItem mCurrentPoi) {
mPoiName.setText(mCurrentPoi.getTitle());
mPoiAddress.setText(mCurrentPoi.getSnippet() + mCurrentPoi.getDistance());
}
@Override
public View getInfoContents(Marker arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public View getInfoWindow(Marker arg0) {
// TODO Auto-generated method stub
return null;
}
@Override
public void onInfoWindowClick(Marker arg0) {
// TODO Auto-generated method stub
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btn_search:
doSearchQuery();
break;
default:
break;
}
}
private int[] markers = {R.mipmap.poi_marker_1,
R.mipmap.poi_marker_2,
R.mipmap.poi_marker_3,
R.mipmap.poi_marker_4,
R.mipmap.poi_marker_5,
R.mipmap.poi_marker_6,
R.mipmap.poi_marker_7,
R.mipmap.poi_marker_8,
R.mipmap.poi_marker_9,
R.mipmap.poi_marker_10
};
private void whetherToShowDetailInfo(boolean isToShow) {
if (isToShow) {
mPoiDetail.setVisibility(View.VISIBLE);
} else {
mPoiDetail.setVisibility(View.GONE);
}
}
@Override
public void onMapClick(LatLng arg0) {
whetherToShowDetailInfo(false);
if (mlastMarker != null) {
resetlastmarker();
}
}
/**
* poi没有搜索到数据,返回一些推荐城市的信息
*/
private void showSuggestCity(List<SuggestionCity> cities) {
String infomation = "推荐城市\n";
for (int i = 0; i < cities.size(); i++) {
infomation += "城市名称:" + cities.get(i).getCityName() + "城市区号:"
+ cities.get(i).getCityCode() + "城市编码:"
+ cities.get(i).getAdCode() + "\n";
}
ToastUtil.show(this, infomation);
}
/**
* 自定义PoiOverlay
*/
private class myPoiOverlay {
private AMap mamap;
private List<PoiItem> mPois;
private ArrayList<Marker> mPoiMarks = new ArrayList<Marker>();
public myPoiOverlay(AMap amap, List<PoiItem> pois) {
mamap = amap;
mPois = pois;
}
/**
* 添加Marker到地图中。
*
* @since V2.1.0
*/
public void addToMap() {
for (int i = 0; i < mPois.size(); i++) {
Marker marker = mamap.addMarker(getMarkerOptions(i));
PoiItem item = mPois.get(i);
marker.setObject(item);
mPoiMarks.add(marker);
}
}
/**
* 去掉PoiOverlay上所有的Marker。
*
* @since V2.1.0
*/
public void removeFromMap() {
for (Marker mark : mPoiMarks) {
mark.remove();
}
}
/**
* 移动镜头到当前的视角。
*
* @since V2.1.0
*/
public void zoomToSpan() {
if (mPois != null && mPois.size() > 0) {
if (mamap == null)
return;
LatLngBounds bounds = getLatLngBounds();
mamap.moveCamera(CameraUpdateFactory.newLatLngBounds(bounds, 100));
}
}
private LatLngBounds getLatLngBounds() {
LatLngBounds.Builder b = LatLngBounds.builder();
for (int i = 0; i < mPois.size(); i++) {
b.include(new LatLng(mPois.get(i).getLatLonPoint().getLatitude(),
mPois.get(i).getLatLonPoint().getLongitude()));
}
return b.build();
}
private MarkerOptions getMarkerOptions(int index) {
return new MarkerOptions()
.position(
new LatLng(mPois.get(index).getLatLonPoint()
.getLatitude(), mPois.get(index)
.getLatLonPoint().getLongitude()))
.title(getTitle(index)).snippet(getSnippet(index))
.icon(getBitmapDescriptor(index));
}
protected String getTitle(int index) {
return mPois.get(index).getTitle();
}
protected String getSnippet(int index) {
return mPois.get(index).getSnippet();
}
/**
* 从marker中得到poi在list的位置。
*
* @param marker 一个标记的对象。
* @return 返回该marker对应的poi在list的位置。
* @since V2.1.0
*/
public int getPoiIndex(Marker marker) {
for (int i = 0; i < mPoiMarks.size(); i++) {
if (mPoiMarks.get(i).equals(marker)) {
return i;
}
}
return -1;
}
/**
* 返回第index的poi的信息。
*
* @param index 第几个poi。
* @return poi的信息。poi对象详见搜索服务模块的基础核心包(com.amap.api.services.core)中的类 <strong><a href="../../../../../../Search/com/amap/api/services/core/PoiItem.html" title="com.amap.api.services.core中的类">PoiItem</a></strong>。
* @since V2.1.0
*/
public PoiItem getPoiItem(int index) {
if (index < 0 || index >= mPois.size()) {
return null;
}
return mPois.get(index);
}
protected BitmapDescriptor getBitmapDescriptor(int arg0) {
if (arg0 < 10) {
BitmapDescriptor icon = BitmapDescriptorFactory.fromBitmap(
BitmapFactory.decodeResource(getResources(), markers[arg0]));
return icon;
} else {
BitmapDescriptor icon = BitmapDescriptorFactory.fromBitmap(
BitmapFactory.decodeResource(getResources(), R.mipmap.marker_other_highlight));
return icon;
}
}
}
/**
* 设置一些amap的属性
*/
private void setUpLocation() {
mAMap.setLocationSource(this);// 设置定位监听
mAMap.getUiSettings().setMyLocationButtonEnabled(true);// 设置默认定位按钮是否显示
mAMap.setMyLocationEnabled(true);// 设置为true表示显示定位层并可触发定位,false表示隐藏定位层并不可触发定位,默认是false
// 设置定位的类型为定位模式 ,可以由定位、跟随或地图根据面向方向旋转几种
mAMap.setMyLocationType(AMap.LOCATION_TYPE_LOCATE);
}
/**
* 定位成功后回调函数
*/
@Override
public void onLocationChanged(AMapLocation amapLocation) {
if (mListener != null && amapLocation != null) {
if (amapLocation != null
&& amapLocation.getErrorCode() == 0) {
//定位成功回调信息,设置相关消息
amapLocation.getLocationType();//获取当前定位结果来源,如网络定位结果,详见定位类型表
myLat = amapLocation.getLatitude();//获取纬度
myLongt = amapLocation.getLongitude();//获取经度
amapLocation.getAccuracy();//获取精度信息
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
Date date = new Date(amapLocation.getTime());
df.format(date);//定位时间
amapLocation.getAddress();//地址,如果option中设置isNeedAddress为false,则没有此结果,网络定位结果中会有地址信息,GPS定位不返回地址信息。
amapLocation.getCountry();//国家信息
amapLocation.getProvince();//省信息
amapLocation.getCity();//城市信息
amapLocation.getDistrict();//城区信息
amapLocation.getStreet();//街道信息
amapLocation.getStreetNum();//街道门牌号信息
amapLocation.getCityCode();//城市编码
amapLocation.getAdCode();//地区编码
TextView textView = (TextView) findViewById(R.id.city_detail);
textView.setText(amapLocation.getCity() + "=" + amapLocation.getDistrict() + "==" + amapLocation.getStreetNum());
mListener.onLocationChanged(amapLocation);// 显示系统小蓝点
} else {
String errText = "定位失败," + amapLocation.getErrorCode() + ": " + amapLocation.getErrorInfo();
Log.e("AmapErr", errText);
}
}
}
/**
* 激活定位
*/
@Override
public void activate(OnLocationChangedListener listener) {
mListener = listener;
if (mlocationClient == null) {
mlocationClient = new AMapLocationClient(this);
mLocationOption = new AMapLocationClientOption();
//设置定位监听
mlocationClient.setLocationListener(this);
//设置为高精度定位模式
mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
//设置定位参数
mlocationClient.setLocationOption(mLocationOption);
// 此方法为每隔固定时间会发起一次定位请求,为了减少电量消耗或网络流量消耗,
// 注意设置合适的定位时间的间隔(最小间隔支持为2000ms),并且在合适时间调用stopLocation()方法来取消定位请求
// 在定位结束后,在合适的生命周期调用onDestroy()方法
// 在单次定位情况下,定位无论成功与否,都无需调用stopLocation()方法移除请求,定位sdk内部会移除
mlocationClient.startLocation();
}
}
/**
* 停止定位
*/
@Override
public void deactivate() {
mListener = null;
if (mlocationClient != null) {
mlocationClient.stopLocation();
mlocationClient.onDestroy();
}
mlocationClient = null;
}
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}
点击打开链接