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package com.xypower.mpapp;
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import android.Manifest;
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import android.content.Context;
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import android.content.Intent;
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import android.content.pm.PackageManager;
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import android.location.Address;
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import android.location.Criteria;
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import android.location.Geocoder;
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import android.location.Location;
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import android.location.LocationListener;
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import android.location.LocationManager;
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import android.location.LocationProvider;
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import android.os.Bundle;
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import android.provider.Settings;
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import android.util.Log;
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import android.widget.Toast;
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import androidx.core.app.ActivityCompat;
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import java.io.IOException;
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import java.util.List;
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import java.util.Locale;
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public class LocationUtil {
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private static OnLocationChangeListener mListener;
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private static MyLocationListener myLocationListener;
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private static LocationManager mLocationManager;
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private LocationUtil() {
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throw new UnsupportedOperationException("u can't instantiate me...");
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}
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/**
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* 判断Gps是否可用
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*
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* @return {@code true}: 是<br>{@code false}: 否
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*/
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public static boolean isGpsEnabled(Context context) {
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LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
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return lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
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}
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/**
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* 判断定位是否可用
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*
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* @return {@code true}: 是<br>{@code false}: 否
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*/
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public static boolean isLocationEnabled(Context context) {
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LocationManager lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
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return lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER) || lm.isProviderEnabled(LocationManager.GPS_PROVIDER);
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}
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/**
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* 打开Gps设置界面
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*/
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public static void openGpsSettings(Context context) {
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Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
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intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
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context.startActivity(intent);
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}
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/**
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* 注册
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* <p>使用完记得调用{@link #unregister()}</p>
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* <p>需添加权限 {@code <uses-permission android:name="android.permission.INTERNET"/>}</p>
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* <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>}</p>
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* <p>需添加权限 {@code <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>}</p>
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* <p>如果{@code minDistance}为0，则通过{@code minTime}来定时更新；</p>
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* <p>{@code minDistance}不为0，则以{@code minDistance}为准；</p>
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* <p>两者都为0，则随时刷新。</p>
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*
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* @param minTime 位置信息更新周期（单位：毫秒）
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* @param minDistance 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（单位：米）
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* @param listener 位置刷新的回调接口
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* @return {@code true}: 初始化成功<br>{@code false}: 初始化失败
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*/
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public static boolean register(Context context, long minTime, long minDistance, OnLocationChangeListener listener) {
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if (listener == null) return false;
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mLocationManager = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
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mListener = listener;
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if (!isLocationEnabled(context)) {
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Toast.makeText(context, "无法定位，请打开定位服务", Toast.LENGTH_SHORT).show();
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return false;
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}
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String provider = mLocationManager.getBestProvider(getCriteria(), true);
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if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
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// TODO: Consider calling
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// ActivityCompat#requestPermissions
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// here to request the missing permissions, and then overriding
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// public void onRequestPermissionsResult(int requestCode, String[] permissions,
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// int[] grantResults)
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// to handle the case where the user grants the permission. See the documentation
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// for ActivityCompat#requestPermissions for more details.
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return false;
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}
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Location location = mLocationManager.getLastKnownLocation(provider);
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if (location != null) listener.getLastKnownLocation(location);
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if (myLocationListener == null) myLocationListener = new MyLocationListener();
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mLocationManager.requestLocationUpdates(provider, minTime, minDistance, myLocationListener);
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return true;
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}
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/**
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* 注销
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*/
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public static void unregister() {
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if (mLocationManager != null) {
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if (myLocationListener != null) {
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mLocationManager.removeUpdates(myLocationListener);
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myLocationListener = null;
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}
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mLocationManager = null;
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}
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}
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/**
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* 设置定位参数
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*
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* @return {@link Criteria}
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*/
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private static Criteria getCriteria() {
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Criteria criteria = new Criteria();
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//设置定位精确度 Criteria.ACCURACY_COARSE比较粗略，Criteria.ACCURACY_FINE则比较精细
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criteria.setAccuracy(Criteria.ACCURACY_FINE);
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//设置是否要求速度
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criteria.setSpeedRequired(false);
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// 设置是否允许运营商收费
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criteria.setCostAllowed(false);
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//设置是否需要方位信息
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criteria.setBearingRequired(false);
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//设置是否需要海拔信息
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criteria.setAltitudeRequired(false);
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// 设置对电源的需求
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criteria.setPowerRequirement(Criteria.POWER_LOW);
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return criteria;
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}
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/**
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* 根据经纬度获取地理位置
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*
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* @param context 上下文
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* @param latitude 纬度
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* @param longitude 经度
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* @return {@link Address}
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*/
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public static Address getAddress(Context context, double latitude, double longitude) {
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Geocoder geocoder = new Geocoder(context, Locale.getDefault());
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try {
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List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1);
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if (addresses.size() > 0) return addresses.get(0);
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} catch (IOException e) {
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e.printStackTrace();
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}
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return null;
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}
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/**
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* 根据经纬度获取所在国家
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*
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* @param context 上下文
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* @param latitude 纬度
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* @param longitude 经度
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* @return 所在国家
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*/
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public static String getCountryName(Context context, double latitude, double longitude) {
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Address address = getAddress(context, latitude, longitude);
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return address == null ? "unknown" : address.getCountryName();
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}
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/**
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* 根据经纬度获取所在地
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*
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* @param context 上下文
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* @param latitude 纬度
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* @param longitude 经度
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* @return 所在地
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*/
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public static String getLocality(Context context, double latitude, double longitude) {
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Address address = getAddress(context, latitude, longitude);
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return address == null ? "unknown" : address.getLocality();
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}
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/**
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* 根据经纬度获取所在街道
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*
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* @param context 上下文
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* @param latitude 纬度
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* @param longitude 经度
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* @return 所在街道
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*/
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public static String getStreet(Context context, double latitude, double longitude) {
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Address address = getAddress(context, latitude, longitude);
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return address == null ? "unknown" : address.getAddressLine(0);
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}
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private static class MyLocationListener implements LocationListener {
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/**
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* 当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发
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*
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* @param location 坐标
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*/
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@Override
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public void onLocationChanged(Location location) {
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if (mListener != null) {
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mListener.onLocationChanged(location);
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}
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}
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/**
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* provider的在可用、暂时不可用和无服务三个状态直接切换时触发此函数
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*
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* @param provider 提供者
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* @param status 状态
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* @param extras provider可选包
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*/
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@Override
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public void onStatusChanged(String provider, int status, Bundle extras) {
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if (mListener != null) {
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mListener.onStatusChanged(provider, status, extras);
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}
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switch (status) {
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case LocationProvider.AVAILABLE:
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Log.e("onStatusChanged", "当前GPS状态为可见状态");
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break;
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case LocationProvider.OUT_OF_SERVICE:
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Log.e("onStatusChanged", "当前GPS状态为服务区外状态");
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break;
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case LocationProvider.TEMPORARILY_UNAVAILABLE:
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Log.e("onStatusChanged", "当前GPS状态为暂停服务状态");
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break;
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}
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}
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/**
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* provider被enable时触发此函数，比如GPS被打开
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*/
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@Override
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public void onProviderEnabled(String provider) {
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System.out.println("dsaf");
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}
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/**
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* provider被disable时触发此函数，比如GPS被关闭
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*/
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@Override
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public void onProviderDisabled(String provider) {
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System.out.println("dsaf");
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}
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}
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public interface OnLocationChangeListener {
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/**
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* 获取最后一次保留的坐标
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*
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* @param location 坐标
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*/
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void getLastKnownLocation(Location location);
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/**
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* 当坐标改变时触发此函数，如果Provider传进相同的坐标，它就不会被触发
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*
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* @param location 坐标
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*/
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void onLocationChanged(Location location);
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/**
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* provider的在可用、暂时不可用和无服务三个状态直接切换时触发此函数
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*
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* @param provider 提供者
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* @param status 状态
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* @param extras provider可选包
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*/
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void onStatusChanged(String provider, int status, Bundle extras);//位置状态发生改变
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}
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}
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