GPS工具类(可实现离线定位)

这是实现离线进行GPS定位的工具类,使用简单方便

工具类
/**
 * Created by chenzhi on 2017/12/13 0013.
 * 

* 如果需要适配6.0以上系统请处理权限问题 */ @SuppressLint("MissingPermission") public class GPSUtils { private static LocationManager mLocationManager; private static final String TAG = "GPSUtils"; private static Location mLocation = null; private static Activity mContext; public GPSUtils(Activity context) { this.mContext = context; mLocationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); // 判断GPS是否正常启动 if (!mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)) { Toast.makeText(context, "请开启GPS导航...", Toast.LENGTH_SHORT).show(); // 返回开启GPS导航设置界面 Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS); context.startActivityForResult(intent, 0); return; } // 为获取地理位置信息时设置查询条件 String bestProvider = mLocationManager.getBestProvider(getCriteria(), true); // 获取位置信息 // 如果不设置查询要求,getLastKnownLocation方法传人的参数为LocationManager.GPS_PROVIDER Location location = mLocationManager.getLastKnownLocation(bestProvider); // getLocationData(location); mLocation = location; // 监听状态 // mLocationManager.addGpsStatusListener(listener); // 绑定监听,有4个参数 // 参数1,设备:有GPS_PROVIDER和NETWORK_PROVIDER两种 // 参数2,位置信息更新周期,单位毫秒 // 参数3,位置变化最小距离:当位置距离变化超过此值时,将更新位置信息 // 参数4,监听 // 备注:参数2和3,如果参数3不为0,则以参数3为准;参数3为0,则通过时间来定时更新;两者为0,则随时刷新 // 1秒更新一次,或最小位移变化超过1米更新一次; // 注意:此处更新准确度非常低,推荐在service里面启动一个Thread,在run中sleep(10000);然后执行handler.sendMessage(),更新位置 mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 1, locationListener); } /** * 返回查询条件 * * @return */ private static Criteria getCriteria() { Criteria criteria = new Criteria(); // 设置定位精确度 Criteria.ACCURACY_COARSE比较粗略,Criteria.ACCURACY_FINE则比较精细 criteria.setAccuracy(Criteria.ACCURACY_FINE); // 设置是否要求速度 criteria.setSpeedRequired(false); // 设置是否允许运营商收费 criteria.setCostAllowed(false); // 设置是否需要方位信息 criteria.setBearingRequired(false); // 设置是否需要海拔信息 criteria.setAltitudeRequired(false); // 设置对电源的需求 criteria.setPowerRequirement(Criteria.POWER_LOW); return criteria; } /** * @return Location--->getLongitude()获取经度/getLatitude()获取纬度 */ public static Location getLocation() { if (mLocation == null) { Log.e("GPSUtils", "setLocationData: 获取当前位置信息为空"); return null; } return mLocation; } public static String getLocalCity(){ if (mLocation==null){ Log.e("GPSUtils", "getLocalCity: 获取城市信息为空"); return ""; } List

result = getAddress(mLocation); String city = ""; if (result != null && result.size() > 0) { city = result.get(0).getLocality();//获取城市 } return city; } public static String getAddressStr(){ if (mLocation==null){ Log.e("GPSUtils", "getAddressStr: 获取详细地址信息为空"); return ""; } List
result = getAddress(mLocation); String address = ""; if (result != null && result.size() > 0) { address = result.get(0).getAddressLine(0);//获取详细地址 } return address; } // 位置监听 private static LocationListener locationListener = new LocationListener() { //位置信息变化时触发 public void onLocationChanged(Location location) { mLocation = location; Log.i(TAG, "时间:" + location.getTime()); Log.i(TAG, "经度:" + location.getLongitude()); Log.i(TAG, "纬度:" + location.getLatitude()); Log.i(TAG, "海拔:" + location.getAltitude()); } //GPS状态变化时触发 public void onStatusChanged(String provider, int status, Bundle extras) { switch (status) { // GPS状态为可见时 case LocationProvider.AVAILABLE: Log.i(TAG, "当前GPS状态为可见状态"); break; // GPS状态为服务区外时 case LocationProvider.OUT_OF_SERVICE: Log.i(TAG, "当前GPS状态为服务区外状态"); break; // GPS状态为暂停服务时 case LocationProvider.TEMPORARILY_UNAVAILABLE: Log.i(TAG, "当前GPS状态为暂停服务状态"); break; } } //GPS开启时触发 public void onProviderEnabled(String provider) { Location location = mLocationManager.getLastKnownLocation(provider); mLocation = location; } //GPS禁用时触发 public void onProviderDisabled(String provider) { mLocation = null; } }; // 获取地址信息 private static List
getAddress(Location location) { List
result = null; try { if (location != null) { Geocoder gc = new Geocoder(mContext, Locale.getDefault()); result = gc.getFromLocation(location.getLatitude(), location.getLongitude(), 1); } } catch (Exception e) { e.printStackTrace(); } return result; } // 状态监听 GpsStatus.Listener listener = new GpsStatus.Listener() { public void onGpsStatusChanged(int event) { switch (event) { // 第一次定位 case GpsStatus.GPS_EVENT_FIRST_FIX: Log.i(TAG, "第一次定位"); break; // 卫星状态改变 case GpsStatus.GPS_EVENT_SATELLITE_STATUS: Log.i(TAG, "卫星状态改变"); GpsStatus gpsStatus = mLocationManager.getGpsStatus(null); // 获取卫星颗数的默认最大值 int maxSatellites = gpsStatus.getMaxSatellites(); // 创建一个迭代器保存所有卫星 Iterator iters = gpsStatus.getSatellites() .iterator(); int count = 0; while (iters.hasNext() && count <= maxSatellites) { GpsSatellite s = iters.next(); count++; } System.out.println("搜索到:" + count + "颗卫星"); break; // 定位启动 case GpsStatus.GPS_EVENT_STARTED: Log.i(TAG, "定位启动"); break; // 定位结束 case GpsStatus.GPS_EVENT_STOPPED: Log.i(TAG, "定位结束"); break; } } }; }
在Activity里的调用
    private void initLocationGPS() {
        gpsUtils = new GPSUtils(MainActivity.this);//初始化GPS

        handler.postDelayed(runnable, 0);
    }

          Runnable runnable = new Runnable() {
                  @Override
                  public void run() {
                      location = gpsUtils.getLocation();//获取位置信息

                      if (location != null) {
                          runOnUiThread(new Runnable() {
                              @Override
                              public void run() {
                                  updateView(location);
                              }
                          });
                          handler.removeCallbacks(runnable);
                      } else {
                          handler.postDelayed(this, 1000);
                      }
                  }
              };


      /**
     * 实时更新文本内容
     *
     * @param location
     */
    private void updateView(Location location) {
        if (location != null) {
            tvLongitude.setText(String.valueOf(location.getLongitude()));
            tvLatitude.setText(String.valueOf(location.getLatitude()));
            tvAddress.setText(String.valueOf(gpsUtils.getAddressStr()));
        } else {
        }
    }
至此,一个GPS定位就完成了,是不是很简单嘞。

文章很短,路还漫长,大家好,我是玖玖君,一个帅气与才华并存的男人,我们下期再见。

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