利用百度地图Android sdk高仿微信发送位置功能及遇到的问题

<mCenterPoint = mBaiduMap.getMapStatus().targetScreen;//mBaiduMap是BaiduMap类的实例 

currentLatLng = mBaiduMap.getProjection().fromScreenLocation(       mCenterPoint);</strong></span> 

package com.vr.souhuodong.UI.Sou; import java.util.ArrayList; import java.util.List; import android.app.Activity; import android.content.Intent; import android.graphics.Point; import android.net.Uri; import android.os.Bundle; import android.view.MotionEvent; import android.view.View; import android.widget.AdapterView; import android.widget.AdapterView.OnItemClickListener; import android.widget.ImageView; import android.widget.ListView; import android.widget.ProgressBar; import com.baidu.location.BDLocation; import com.baidu.location.BDLocationListener; import com.baidu.location.LocationClient; import com.baidu.location.LocationClientOption; import com.baidu.mapapi.map.BaiduMap; import com.baidu.mapapi.map.BaiduMap.OnMapTouchListener; import com.baidu.mapapi.map.BitmapDescriptor; import com.baidu.mapapi.map.BitmapDescriptorFactory; import com.baidu.mapapi.map.MapStatusUpdate; import com.baidu.mapapi.map.MapStatusUpdateFactory; import com.baidu.mapapi.map.MapView; import com.baidu.mapapi.map.MarkerOptions; import com.baidu.mapapi.map.MyLocationConfiguration; import com.baidu.mapapi.map.MyLocationConfiguration.LocationMode; import com.baidu.mapapi.map.MyLocationData; import com.baidu.mapapi.map.OverlayOptions; import com.baidu.mapapi.model.LatLng; import com.baidu.mapapi.search.core.PoiInfo; 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.vr.souhuodong.R; import com.vr.souhuodong.UI.Adapter.PlaceListAdapter; public class ChoosePlaceActivity extends Activity {  MapView mMapView;  BaiduMap mBaiduMap;  ProgressBar mLoadBar;  ImageView mSelectImg;  // 定位  LocationClient mLocationClient = null;  MyBDLocationListner mListner = null;  BitmapDescriptor mCurrentMarker = null;  // 当前经纬度  double mLantitude;  double mLongtitude;  LatLng mLoactionLatLng;  // 设置第一次定位标志  boolean isFirstLoc = true;  // MapView中央对于的屏幕坐标  Point mCenterPoint = null;  // 地理编码  GeoCoder mGeoCoder = null;  // 位置列表  ListView mListView;  PlaceListAdapter mAdapter;  List<PoiInfo> mInfoList;  PoiInfo mCurentInfo;  @Override  protected void onCreate(Bundle savedInstanceState) {   // TODO Auto-generated method stub   super.onCreate(savedInstanceState);   setContentView(R.layout.activity_chooseplace);   initView();  }  /**   * 初始化界面   */  private void initView() {   // TODO Auto-generated method stub   // 初始化地图   mMapView = (MapView) findViewById(R.id.chooseplace_bmapView);   mMapView.showZoomControls(false);   mBaiduMap = mMapView.getMap();   MapStatusUpdate msu = MapStatusUpdateFactory.zoomTo(17.0f);   mBaiduMap.setMapStatus(msu);   mBaiduMap.setOnMapTouchListener(touchListener);   // 初始化POI信息列表   mInfoList = new ArrayList<PoiInfo>();   // 初始化当前MapView中心屏幕坐标，初始化当前地理坐标   mCenterPoint = mBaiduMap.getMapStatus().targetScreen;   mLoactionLatLng = mBaiduMap.getMapStatus().target;   // 定位   mBaiduMap.setMyLocationEnabled(true);   mLocationClient = new LocationClient(this);   mListner = new MyBDLocationListner();   mLocationClient.registerLocationListener(mListner);   LocationClientOption option = new LocationClientOption();   option.setOpenGps(true);// 打开gps   option.setCoorType("bd09ll"); // 设置坐标类型   option.setScanSpan(1000);   mLocationClient.setLocOption(option);   mLocationClient.start();   // 地理编码   mGeoCoder = GeoCoder.newInstance();   mGeoCoder.setOnGetGeoCodeResultListener(GeoListener);   // 周边位置列表   mListView = (ListView) findViewById(R.id.place_list);   mLoadBar = (ProgressBar) findViewById(R.id.place_progressBar);   mListView.setOnItemClickListener(itemClickListener);   mAdapter = new PlaceListAdapter(getLayoutInflater(), mInfoList);   mListView.setAdapter(mAdapter);   mSelectImg = new ImageView(this);  }  public void turnBack(View view) {   // 实现动画跳转   MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(mLoactionLatLng);   mBaiduMap.animateMapStatus(u);   mBaiduMap.clear();   // 发起反地理编码检索   mGeoCoder.reverseGeoCode((new ReverseGeoCodeOption())     .location(mLoactionLatLng));  }  @Override  protected void onDestroy() {   // TODO Auto-generated method stub   super.onDestroy();   mLocationClient.stop();   mGeoCoder.destroy();  }  // 定位监听器  private class MyBDLocationListner implements BDLocationListener {   @Override   public void onReceiveLocation(BDLocation location) {    // TODO Auto-generated method stub    // map view 销毁后不在处理新接收的位置    if (location == null || mMapView == null)     return;    MyLocationData data = new MyLocationData.Builder()//      // .direction(mCurrentX)//      .accuracy(location.getRadius())//      .latitude(location.getLatitude())//      .longitude(location.getLongitude())//      .build();    mBaiduMap.setMyLocationData(data);    // 设置自定义图标    MyLocationConfiguration config = new MyLocationConfiguration(      LocationMode.NORMAL, true, null);    mBaiduMap.setMyLocationConfigeration(config);    mLantitude = location.getLatitude();    mLongtitude = location.getLongitude();    LatLng currentLatLng = new LatLng(mLantitude, mLongtitude);    mLoactionLatLng = new LatLng(mLantitude, mLongtitude);    // 是否第一次定位    if (isFirstLoc) {     isFirstLoc = false;     // 实现动画跳转     MapStatusUpdate u = MapStatusUpdateFactory       .newLatLng(currentLatLng);     mBaiduMap.animateMapStatus(u);     mGeoCoder.reverseGeoCode((new ReverseGeoCodeOption())       .location(currentLatLng));     return;    }   }  }  // 地理编码监听器  OnGetGeoCoderResultListener GeoListener = new OnGetGeoCoderResultListener() {   public void onGetGeoCodeResult(GeoCodeResult result) {    if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {     // 没有检索到结果    }    // 获取地理编码结果   }   @Override   public void onGetReverseGeoCodeResult(ReverseGeoCodeResult result) {    if (result == null || result.error != SearchResult.ERRORNO.NO_ERROR) {     // 没有找到检索结果    }    // 获取反向地理编码结果    else {     // 当前位置信息     mCurentInfo = new PoiInfo();     mCurentInfo.address = result.getAddress();     mCurentInfo.location = result.getLocation();     mCurentInfo.name = "[位置]";     mInfoList.clear();     mInfoList.add(mCurentInfo);     // 将周边信息加入表     if (result.getPoiList() != null) {      mInfoList.addAll(result.getPoiList());     }     // 通知适配数据已改变     mAdapter.notifyDataSetChanged();     mLoadBar.setVisibility(View.GONE);    }   }  };  // 地图触摸事件监听器  OnMapTouchListener touchListener = new OnMapTouchListener() {   @Override   public void onTouch(MotionEvent event) {    // TODO Auto-generated method stub    if (event.getAction() == MotionEvent.ACTION_UP) {     if (mCenterPoint == null) {      return;     }     // 获取当前MapView中心屏幕坐标对应的地理坐标     LatLng currentLatLng;     currentLatLng = mBaiduMap.getProjection().fromScreenLocation(       mCenterPoint);     System.out.println("----" + mCenterPoint.x);     System.out.println("----" + currentLatLng.latitude);     // 发起反地理编码检索     mGeoCoder.reverseGeoCode((new ReverseGeoCodeOption())       .location(currentLatLng));     mLoadBar.setVisibility(View.VISIBLE);    }   }  };  // listView选项点击事件监听器  OnItemClickListener itemClickListener = new OnItemClickListener() {   @Override   public void onItemClick(AdapterView<?> parent, View view, int position,     long id) {    // TODO Auto-generated method stub    // 通知是适配器第position个item被选择了    mAdapter.setNotifyTip(position);    BitmapDescriptor mSelectIco = BitmapDescriptorFactory      .fromResource(R.drawable.icon_geo);    mBaiduMap.clear();    PoiInfo info = (PoiInfo) mAdapter.getItem(position);    LatLng la = info.location;    // 动画跳转    MapStatusUpdate u = MapStatusUpdateFactory.newLatLng(la);    mBaiduMap.animateMapStatus(u);    // 添加覆盖物    OverlayOptions ooA = new MarkerOptions().position(la)      .icon(mSelectIco).anchor(0.5f, 0.5f);    mBaiduMap.addOverlay(ooA);    // 选中项打勾    mSelectImg.setBackgroundResource(R.drawable.greywhite);    mSelectImg = (ImageView) view.findViewById(R.id.place_select);    mSelectImg.setBackgroundResource(R.drawable.ic_select); //   Uri mUri = Uri.parse("geo:39.940409,116.355257"); //   Intent mIntent = new Intent(Intent.ACTION_VIEW,mUri); //   startActivity(mIntent);   }  }; } 

package com.vr.souhuodong.UI.Adapter; import java.util.List; import android.R.integer; import android.view.LayoutInflater; import android.view.View; import android.view.View.OnClickListener; import android.view.ViewGroup; import android.widget.BaseAdapter; import android.widget.ImageView; import android.widget.TextView; import com.baidu.mapapi.search.core.PoiInfo; import com.vr.souhuodong.R; public class PlaceListAdapter extends BaseAdapter {  List<PoiInfo> mList;  LayoutInflater mInflater;  int notifyTip ;  private class MyViewHolder {   TextView placeName;   TextView placeAddree;   ImageView placeSelected;  }  public PlaceListAdapter(LayoutInflater mInflater , List<PoiInfo> mList) {   super();   this.mList = mList;   this.mInflater = mInflater;   notifyTip = -1 ;  }  /**   * 设置第几个item被选择   * @param notifyTip   */  public void setNotifyTip(int notifyTip) {   this.notifyTip = notifyTip;  }  @Override  public int getCount() {   // TODO Auto-generated method stub   return mList.size();  }  @Override  public Object getItem(int position) {   // TODO Auto-generated method stub   return mList.get(position);  }  @Override  public long getItemId(int position) {   // TODO Auto-generated method stub   return position;  }  @Override  public View getView(int position, View convertView, ViewGroup parent) {   // TODO Auto-generated method stub   MyViewHolder holder;   if (convertView == null) {    System.out.println("----aa-");    convertView = mInflater.inflate(com.vr.souhuodong.R.layout.listitem_place, parent, false);     holder = new MyViewHolder();    holder.placeName = (TextView) convertView      .findViewById(com.vr.souhuodong.R.id.place_name);    holder.placeAddree = (TextView) convertView      .findViewById(com.vr.souhuodong.R.id.place_adress);    holder.placeSelected = (ImageView) convertView      .findViewById(com.vr.souhuodong.R.id.place_select);    holder.placeName.setText(mList.get(position).name);    holder.placeAddree.setText(mList.get(position).address);    holder.placeSelected.setBackgroundResource(R.drawable.greywhite);    convertView.setTag(holder);   } else {    holder = (MyViewHolder) convertView.getTag();      }   holder.placeName.setText(mList.get(position).name);   holder.placeAddree.setText(mList.get(position).address);   //根据重新加载的时候第position条item是否是当前所选择的，选择加载不同的图片   if(notifyTip == position ){      holder.placeSelected.setBackgroundResource(R.drawable.ic_select);   }      else {    holder.placeSelected.setBackgroundResource(R.drawable.greywhite);   }   return convertView;  } // class MyItemClickListener implements OnClickListener { // //  ImageView mImg; //  public MyItemClickListener(ImageView mImg) { //   this.mImg = mImg; //  } //  @Override //  public void onClick(View v) { //   // TODO Auto-generated method stub //   mImg.setBackgroundResource(R.drawable.ic_select); //  } //  // } }