需求是一个简单的社交系统,定位下大概城市信息即可
客户端unity,最早想法用unity的API可以获取GPS信号,获得经纬度通过百度,高德数据库来确认位置,但是GPS耗电快,用户会有抵触心理,反正我看到打开个应用GPS定位在那里闪我就不想用这个APP了,所以决定用适配系统来处理 android ios,
定位有几个途径
1,GPS 耗电块,只能室内信号不有遮挡的地方,有点就是准确率高。
2,基站,安卓有电话卡的机器可以获取到附近营运商的基站信息,基站信息有当前基站的经纬度,就可以获取到当前大概位置。
3,网络定位,WIFI定位,
IOS 解决方案 https://blog.csdn.net/qq_18709863/article/details/84573686 请跳转
android解决方法
首先要解决权限问题,动态申请定位权限,我使用的https://github.com/getActivity/XXPermissions 这个库很好用
下面是android java代码
package com.example.location_test;
import java.util.List;
import android.app.Activity;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;
import com.hjq.permissions.OnPermission;
import com.hjq.permissions.Permission;
import com.hjq.permissions.XXPermissions;
public class MainActivity extends Activity implements View.OnClickListener{
protected LocationManager locationManager;
protected Location mlocation;
TextView gpstext;
Button btn1;//定位
Button btn2;//获取权限;
private LocationUtils locationUtil;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gpstext=(TextView) findViewById(R.id.info);
btn1= (Button) findViewById(R.id.button1);
btn2= (Button) findViewById(R.id.button2);
btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
locationUtil = LocationUtils.getInstance(this);
locationUtil.text=gpstext;
}
@Override
public void onClick(View v) {
switch (v.getId()){
case R.id.button1:
Toast.makeText(MainActivity.this,"Button点击事件1",Toast.LENGTH_LONG).show();
locationUtil.getLocation();
break;
case R.id.button2:
XXPermissions.with(this).permission(Permission.Group.LOCATION)
.request(new OnPermission() {
@Override
public void hasPermission(List<String> granted, boolean isAll) {
if (isAll) {
Toast.makeText(MainActivity.this, "获取权限成功", Toast.LENGTH_SHORT).show();
}else {
Toast.makeText(MainActivity.this, "获取权限成功,部分权限未正常授予", Toast.LENGTH_SHORT).show();
}
}
@Override
public void noPermission(List<String> denied, boolean quick) {
if(quick) {
Toast.makeText(MainActivity.this, "被永久拒绝授权,请手动授予权限", Toast.LENGTH_SHORT).show();
//如果是被永久拒绝就跳转到应用权限系统设置页面
XXPermissions.gotoPermissionSettings(MainActivity.this);
}else {
Toast.makeText(MainActivity.this, "获取权限失败", Toast.LENGTH_SHORT).show();
}
}
});
Toast.makeText(MainActivity.this,"Button点击事件2",Toast.LENGTH_LONG).show();
break;
}
}
protected void onDestroy() {
super.onDestroy();
locationUtil.removeLocationUpdatesListener();
}
public void gotoPermissionSettings(View view) {
XXPermissions.gotoPermissionSettings(MainActivity.this);
}
}
package com.example.location_test;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.provider.Settings;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;
import java.io.IOException;
import java.util.List;
import java.util.Locale;
import com.hjq.permissions.OnPermission;
import com.hjq.permissions.Permission;
import com.hjq.permissions.XXPermissions;
/*
* 注意
* 1、Android6.0动态权限,
* 2、Geocoder获取地理位置信息是一个后台的耗时操作,
* 为了不阻塞主线程,强力建议在使用Geocoder获取地理位置信息时采用异步线程的方式来请求服务,这样不会造成主线程的阻塞。
* */
public class LocationUtils {
private volatile static LocationUtils uniqueInstance;
private LocationManager locationManager;
private Activity mContext;
public TextView text;
private LocationUtils(Activity context) {
mContext = context;
}
//采用Double CheckLock(DCL)实现单例
public static LocationUtils getInstance(Activity context) {
if (uniqueInstance == null) {
synchronized (LocationUtils.class) {
if (uniqueInstance == null) {
uniqueInstance = new LocationUtils(context);
}
}
}
return uniqueInstance;
}
public void getLocation() {
//1.获取位置管理器
locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
//2.获取位置提供器,GPS或是NetWork
// 获取所有可用的位置提供器
List<String> providerList = locationManager.getProviders(true);
String locationProvider;
if (providerList.contains(LocationManager.NETWORK_PROVIDER)) {//Google服务被墙不可用
//网络定位的精准度稍差,但耗电量比较少。
System.out.println("=====NETWORK_PROVIDER====");
locationProvider = LocationManager.NETWORK_PROVIDER;
}
else if (providerList.contains(LocationManager.GPS_PROVIDER)) {
//GPS 定位的精准度比较高,但是非常耗电。
System.out.println("=====GPS_PROVIDER=====");
locationProvider = LocationManager.GPS_PROVIDER;
} else {
System.out.println("=====NO_PROVIDER=====");
// 当没有可用的位置提供器时,弹出Toast提示用户
Toast.makeText(mContext, "No location provider to use", Toast.LENGTH_SHORT).show();
XXPermissions.with(mContext).permission(Permission.Group.LOCATION)
.request(new OnPermission() {
@Override
public void hasPermission(List<String> granted, boolean isAll) {
if (isAll) {
Toast.makeText(mContext, "获取权限成功", Toast.LENGTH_SHORT).show();
getLocation();
}else {
Toast.makeText(mContext, "获取权限成功,部分权限未正常授予", Toast.LENGTH_SHORT).show();
}
}
@Override
public void noPermission(List<String> denied, boolean quick) {
if(quick) {
Toast.makeText(mContext, "被永久拒绝授权,请手动授予权限", Toast.LENGTH_SHORT).show();
//如果是被永久拒绝就跳转到应用权限系统设置页面
XXPermissions.gotoPermissionSettings(mContext);
}else {
Toast.makeText(mContext, "获取权限失败", Toast.LENGTH_SHORT).show();
}
}
});
// Intent intent = new Intent();
// intent.setAction(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
// mContext.startActivity(intent);
return;
}
//3.获取上次的位置,一般第一次运行,此值为null
Location location = locationManager.getLastKnownLocation(locationProvider);
if (location != null) {
// 显示当前设备的位置信息
System.out.println("==显示当前设备的位置信息==");
showLocation(location);
} else {//当GPS信号弱没获取到位置的时候可从网络获取
System.out.println("==Google服务被墙的解决办法==");
getLngAndLatWithNetwork();//Google服务被墙的解决办法
}
// 监视地理位置变化,第二个和第三个参数分别为更新的最短时间minTime和最短距离minDistace
//LocationManager 每隔 5 秒钟会检测一下位置的变化情况,当移动距离超过 10 米的时候,
// 就会调用 LocationListener 的 onLocationChanged() 方法,并把新的位置信息作为参数传入。
locationManager.requestLocationUpdates(locationProvider, 5000, 10, locationListener);
}
//获取经纬度
private void showLocation(Location location) {
double latitude = location.getLatitude();//纬度
double longitude = location.getLongitude();//经度
getAddress(latitude, longitude);
}
private void getAddress(double latitude, double longitude) {
//Geocoder通过经纬度获取具体信息
Geocoder gc = new Geocoder(mContext, Locale.getDefault());
try {
List<Address> locationList = gc.getFromLocation(latitude, longitude, 1);
if (locationList != null) {
Address address = locationList.get(0);
String countryName = address.getCountryName();//国家
String countryCode = address.getCountryCode();
String adminArea = address.getAdminArea();//省
String locality = address.getLocality();//市
String subAdminArea = address.getSubAdminArea();//区
String featureName = address.getFeatureName();//街道
StringBuilder sb=new StringBuilder();
for (int i = 0; address.getAddressLine(i) != null; i++) {
String addressLine = address.getAddressLine(i);
//街道名称:广东省深圳市罗湖区蔡屋围一街深圳瑞吉酒店
System.out.println("addressLine=====" + addressLine);
sb.append(addressLine).append(":");
}
String currentPosition = "latitude is " + latitude//22.545975
+ "\n" + "longitude is " + longitude//114.101232
+ "\n" + "countryName is " + countryName//null
+ "\n" + "countryCode is " + countryCode//CN
+ "\n" + "adminArea is " + adminArea//广东省
+ "\n" + "locality is " + locality//深圳市
+ "\n" + "subAdminArea is " + subAdminArea//null
+ "\n" + "featureName is " + featureName;//蔡屋围一街深圳瑞吉酒店
System.out.println(currentPosition);
text.setText(address.toString()+"@@@"+sb+"@@@"+currentPosition); //text.setText(sb+currentPosition);
Log.e("location test", currentPosition);
}
} catch (IOException e) {
e.printStackTrace();
}
}
public void removeLocationUpdatesListener() {
if (locationManager != null) {
uniqueInstance = null;
locationManager.removeUpdates(locationListener);
}
}
private LocationListener locationListener = new LocationListener() {
// Provider的状态在可用、暂时不可用和无服务三个状态直接切换时触发此函数
@Override
public void onStatusChanged(String provider, int status, Bundle arg2) {
}
// Provider被enable时触发此函数,比如GPS被打开
@Override
public void onProviderEnabled(String provider) {
}
// Provider被disable时触发此函数,比如GPS被关闭
@Override
public void onProviderDisabled(String provider) {
}
//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
@Override
public void onLocationChanged(Location location) {
System.out.println("==onLocationChanged==");
showLocation(location);
}
};
//从网络获取经纬度
private void getLngAndLatWithNetwork() {
LocationManager locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 5000, 10, locationListener);
Location location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
showLocation(location);
}
}
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