LocationProvider.java

package net.coding.program.maopao;

import android.content.Context;
import android.text.TextUtils;
import android.util.Log;

import com.baidu.location.BDLocation;
import com.baidu.location.BDLocationListener;
import com.baidu.location.LocationClient;
import com.baidu.location.LocationClientOption;

/**
 * Created by Neutra on 2015/3/11.
 */
public class LocationProvider {
    private LocationClient locationClient;

    public LocationProvider(Context context) {
        locationClient = new LocationClient(context.getApplicationContext());
        LocationClientOption option = new LocationClientOption();
        option.setLocationMode(LocationClientOption.LocationMode.Hight_Accuracy);//设置定位模式
        option.setCoorType("bd09ll");//返回的定位结果是百度经纬度,默认值gcj02
        option.setIsNeedAddress(true);//返回的定位结果需要包含地址信息
        option.setAddrType("all");
        option.setLocationNotify(false);
        option.setNeedDeviceDirect(false);//返回的定位结果不需要包含手机机头的方向
        locationClient.setLocOption(option);
    }

    public void requestLocation(final LocationResultListener listener) {
        requestLocation(listener, 0);
    }

    public void requestLocation(final LocationResultListener listener, final int retry) {
        locationClient.start();
        locationClient.registerLocationListener(new BDLocationListener() {
            @Override
            public void onReceiveLocation(BDLocation bdLocation) {
                locationClient.unRegisterLocationListener(this);
                String city = bdLocation.getCity();
                boolean success = true;
                if (TextUtils.isEmpty(city)) {
                    city = null;
                    success = false;
                    if (retry < 3) {
                        Log.e("LocationProvider", "request location failure retry " + retry + " times");
                        requestLocation(listener, retry + 1);
                        return;
                    }
                } else {
                    // 大多数情况下，将"广州市"直接显示成"广州"
                    city = city.replaceFirst("市.*$", "");
                }
                locationClient.stop();
                listener.onLocationResult(success, city, bdLocation.getCity() + bdLocation.getDistrict(), bdLocation.getLatitude(), bdLocation.getLongitude());
            }
        });
        // 0：正常发起了定位。
        // 1：服务没有启动。
        // 2：没有监听函数。
        // 6：请求间隔过短。 前后两次请求定位时间间隔不能小于1000ms。
        int code = locationClient.requestLocation();
        if (code == 6) {
            locationClient.requestOfflineLocation();
        }
    }

    public static interface LocationResultListener {
        void onLocationResult(boolean success, String city, String area, double latitude, double longitude);
    }
}