android 获取手机自定位的几种实现方式

下班了,上个班真他妈的累,不知道咋的了,呵呵。。。

把今天的东西总结起来,赶紧走人。。

效果图:

android 获取手机自定位的几种实现方式_第1张图片

 

(1)高德地图 mapabc,支持根据手机位置的变化得到的坐标也是最新位置坐标

需要一个adnroid的mapabc的jar,下载地址:http://code.mapabc.com/

核心代码:

在onCreate()方法里面获得一个locationManager = new LocationManagerProxy(this, getResources().getString(R.string.maps_api_key));对象,maps_api_key去http://code.mapabc.com/这里申请一个即可。

 

主要的两个方法:

public boolean enableMyLocation() { //启用获得位置的监听
  boolean result = true;
  if (mLocationListener == null) {
   mLocationListener = new LocationListenerProxy(locationManager);
   result = mLocationListener.startListening(this,
     mLocationUpdateMinTime, mLocationUpdateMinDistance);
  }
  return result;
 }

 public void disableMyLocation() {//禁用获得位置的监听
  if (mLocationListener != null) {
   mLocationListener.stopListening();
  }
  mLocationListener = null;
 }

 

分别在Activity生命周期方法onResume和onPause方法中执行,然后在

public void onLocationChanged(Location location) {
  if (location != null) {
   Double geoLat = location.getLatitude();
   Double geoLng = location.getLongitude();
   myLocation.setText("定位成功:(" + geoLng + "," + geoLat + ")");
  }
 }

方法中获得最新的经纬度(位置信息),然后得到之后想干嘛就干嘛。

 

最后贴上获得位置的监听器代码

LocationListenerProxy.java

package com.cmmobi.movie.filmdetail;

import com.mapabc.mapapi.LocationManagerProxy;
import com.mapabc.mapapi.LocationProviderProxy;
import android.location.Location;
import android.location.LocationListener;
import android.os.Bundle;

public class LocationListenerProxy implements LocationListener {
 private final LocationManagerProxy mLocationManager;
 private LocationListener mListener = null;
 public LocationListenerProxy(final LocationManagerProxy pLocationManager) {
  mLocationManager = pLocationManager;
 }

 public boolean startListening(final LocationListener pListener, final long pUpdateTime,
   final float pUpdateDistance) {
  boolean result = false;
  mListener = pListener;
  //获取当前可用的Provider,其中MapABCNetwork为MapABC网络定位(基站和WiFi)
  for (final String provider : mLocationManager.getProviders(true)) {
   if (LocationManagerProxy.GPS_PROVIDER.equals(provider)||LocationProviderProxy.MapABCNetwork.equals(provider)) {
    result = true;
    mLocationManager.requestLocationUpdates(provider, pUpdateTime, pUpdateDistance,
      this);
   }
  }
  return result;
 }

 public void stopListening() {
  mListener = null;
  mLocationManager.removeUpdates(this);
 }

 @Override
 public void onLocationChanged(final Location location) {
  if (mListener != null) {
   mListener.onLocationChanged(location);
  }
 }

 @Override
 public void onProviderDisabled(final String arg0) {
  if (mListener != null) {
   mListener.onProviderDisabled(arg0);
  }
 }

 @Override
 public void onProviderEnabled(final String arg0) {
  if (mListener != null) {
   mListener.onProviderEnabled(arg0);
  }
 }

 @Override
 public void onStatusChanged(final String arg0, final int arg1, final Bundle arg2) {
  if (mListener != null) {
   mListener.onStatusChanged(arg0, arg1, arg2);
  }
 }
}

(2)使用android本地api获得自定位信息

public static List<Double> getLocationPosition(Context context){
  List<Double> list = new ArrayList<Double>();
  LocationManager locationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
  
  Criteria criteria = new Criteria();
  
  criteria.setAccuracy(Criteria.ACCURACY_FINE);
  criteria.setAltitudeRequired(false);
  criteria.setBearingRequired(false);
  criteria.setCostAllowed(false);
  criteria.setPowerRequirement(Criteria.POWER_LOW);
  
  String provider = locationManager.getBestProvider(criteria, true);
//  Location location = locationManager.getLastKnownLocation(provider);
  Location location =getLocation(context);
  
  if(location!=null){
   list.add(location.getLongitude());
  }
  
  if(location!=null){
   list.add(location.getLatitude());
  }
  return list;
 }
   
    /**
     * 创建一个LocationListener接口的实现类
     */
    public static LocationListener mLocationListener01 = new LocationListener() { 
        @Override 
        public void onLocationChanged(Location location) {} 
 
        @Override 
        public void onProviderDisabled(String provider) {} 
 
        @Override 
        public void onProviderEnabled(String provider) {} 
 
        @Override 
        public void onStatusChanged(String provider, int status, Bundle extras) {} 
    };
   
    /**
     * 获得Location对象
     * @param context
     * @return
     */
 public static Location getLocation(Context context) {
  // LocationManager locMan = (LocationManager) context
  // .getSystemService(Context.LOCATION_SERVICE);

  LocationManager locMan = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);

  locMan.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 1000,
    10, mLocationListener01);

  locMan.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 10,
    mLocationListener01);

  Location location = locMan
    .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
  if (location == null) {
   location = locMan
     .getLastKnownLocation(LocationManager.GPS_PROVIDER);
  }
  return location;
}

这种方法的缺点是:不能根据位置的变化而变化,如果要自己实现的话就需要用一个定时器定时的去获得位置信息,也是很简单的了。

 

好了,下班走了,有问题欢迎讨论。

 

 

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