简单实现GPS定位
一、权限添加：
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
二、GPS常用类：
LocationManager:位置信息管理类：
Android为定位系统提供了LocationManager管理类。通过LocationManager和其他几个辅助类，开发人员可以方便开发出GPS应用。
LocationProvider:提供定位信息的类：
LocationManager 提供了方法getAllProviders()获取所有的LocationProvider；
也可以通过名称获取指定的LocationProvider。
(1) GPS定位：通过卫星实现的
LocationProvider lProvider = locationManager.getProvider(LocationManager.GPS_PROVIDER);
(2) 网络定位：通过WI-FI 或者信号塔进行定位
LocationProviderlProvider=locationManager.getProvider(LocationManager.NETWORK_PROVIDER);
Location:位置类：
double getLatiude() 获取纬度位置；
double getLongtitude() 获取经度值；
double getAltitude() 获取海拔;
三、java代码：
package com.example.day09;
import android.Manifest;
import android.annotation.TargetApi;
import android.content.pm.PackageManager;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.PersistableBundle;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import com.amap.api.location.AMapLocation;
import com.amap.api.location.AMapLocationClient;
import com.amap.api.location.AMapLocationClientOption;
import com.amap.api.location.AMapLocationListener;
import com.amap.api.maps2d.AMap;
import com.amap.api.maps2d.LocationSource;
import com.amap.api.maps2d.MapView;
import com.amap.api.maps2d.model.BitmapDescriptorFactory;
import com.amap.api.maps2d.model.MyLocationStyle;
public class day09 extends AppCompatActivity implements AMapLocationListener, LocationSource {
LocationManager locationManager;
private AMapLocationClientOption op;//参数设置
private AMapLocationClient client;//定位客户端
//要申请的权限列表
String permissions[] = {Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_NETWORK_STATE};
boolean isOk = false;
boolean noPermission = false;
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_day09);
mapView = findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
if(aMap == null){
aMap = mapView.getMap();
}
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);//获得定位管理类
initPermission();
initDot();
if (ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
/**
* 第一个参数：位置提供器的类型
* 第二个参数：监听位置变化的时间间隔，毫秒为单位
* 第三个参数：监听位置变化的距离间隔，米为单位
* 第四个参数：LocationListener监听器
*/
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new LocationListener() {
@Override
public void onLocationChanged(Location location) {
Log.e("#精度是：", location.getLatitude() + "");
Log.e("#纬度是：", location.getLongitude() + "");
Log.e("#海拔是：", location.getAltitude() + "");
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
}
private void initLocation() {
client = new AMapLocationClient(getApplicationContext());
op = new AMapLocationClientOption();
//设置定位回到监听
client.setLocationListener(this);
//配置定位参数
op.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
op.setInterval(1000);//每隔一秒定位一次
op.setNeedAddress(true);//是否需要返回地点
op.setMockEnable(true);//是否虚拟定位
client.setLocationOption(op);
client.startLocation();
}
@RequiresApi(api = Build.VERSION_CODES.M)
public void initPermission(){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
for(String per:permissions){
if(checkSelfPermission(per)!= PackageManager.PERMISSION_GRANTED){
noPermission = true;
break;
}
}
}
if(noPermission){
//去申请权限
requestPermissions(permissions,100);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestCode == 100){
for (int i = 0;i < grantResults.length;i++){
if(grantResults[i] != PackageManager.PERMISSION_GRANTED){
isOk = true;
break;
}
}
if(isOk){
Log.e("error###","没有成功！！！！");
}
}
}
@Override
public void onLocationChanged(AMapLocation aMapLocation) {
Log.e("ZXY","errorCode:"+aMapLocation.getErrorCode());
Log.e("ZXY","errorInfo:"+aMapLocation.getErrorInfo());
Log.e("ZXY","地址："+aMapLocation.getAddress());
Log.e("ZXY","纬度："+aMapLocation.getLatitude());
Log.e("ZXY","经度："+aMapLocation.getLongitude());
}
}
效果：
GPS与谷歌地图的使用：
依赖：
implementation ‘com.amap.api:location:4.2.0’
implementation’com.amap.api:map2d:5.2.0’
布局代码：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".day09">
<com.amap.api.maps2d.MapView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/map"
>
com.amap.api.maps2d.MapView>
RelativeLayout>
java代码：
package com.example.day09;
import android.Manifest;
import android.annotation.TargetApi;
import android.content.pm.PackageManager;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Build;
import android.os.PersistableBundle;
import android.support.annotation.NonNull;
import android.support.annotation.RequiresApi;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Toast;
import com.amap.api.location.AMapLocation;
import com.amap.api.location.AMapLocationClient;
import com.amap.api.location.AMapLocationClientOption;
import com.amap.api.location.AMapLocationListener;
import com.amap.api.maps2d.AMap;
import com.amap.api.maps2d.LocationSource;
import com.amap.api.maps2d.MapView;
import com.amap.api.maps2d.model.BitmapDescriptorFactory;
import com.amap.api.maps2d.model.MyLocationStyle;
public class day09 extends AppCompatActivity implements AMapLocationListener, LocationSource {
LocationManager locationManager;
private AMapLocationClientOption op;//参数设置
private AMapLocationClient client;//定位客户端
private OnLocationChangedListener onLocationChangedListener;
private MapView mapView;
private AMap aMap;
//要申请的权限列表
String permissions[] = {Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_NETWORK_STATE};
boolean isOk = false;
boolean noPermission = false;
@RequiresApi(api = Build.VERSION_CODES.M)
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_day09);
mapView = findViewById(R.id.map);
mapView.onCreate(savedInstanceState);
if(aMap == null){
aMap = mapView.getMap();
}
locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);//获得定位管理类
initPermission();
initDot();
if (ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(this,
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
return;
}
/**
* 第一个参数：位置提供器的类型
* 第二个参数：监听位置变化的时间间隔，毫秒为单位
* 第三个参数：监听位置变化的距离间隔，米为单位
* 第四个参数：LocationListener监听器
*/
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new LocationListener() {
@Override
public void onLocationChanged(Location location) {
Log.e("#精度是：", location.getLatitude() + "");
Log.e("#纬度是：", location.getLongitude() + "");
Log.e("#海拔是：", location.getAltitude() + "");
}
@Override
public void onStatusChanged(String provider, int status, Bundle extras) {
}
@Override
public void onProviderEnabled(String provider) {
}
@Override
public void onProviderDisabled(String provider) {
}
});
}
private void initDot() {
//自定义系统定位小蓝点
MyLocationStyle myLocationStyle = new MyLocationStyle();
myLocationStyle.myLocationIcon(BitmapDescriptorFactory.fromResource(R.mipmap.ic_launcher_round));//设置图标
myLocationStyle.strokeColor(Color.BLUE);//设置 圆形外边框
myLocationStyle.radiusFillColor(Color.argb(100,0,0,100));//设置圆形的填充色
aMap.setMyLocationStyle(myLocationStyle);
aMap.setLocationSource(this);
aMap.setMyLocationEnabled(true);
}
private void initLocation() {
client = new AMapLocationClient(getApplicationContext());
op = new AMapLocationClientOption();
//设置定位回到监听
client.setLocationListener(this);
//配置定位参数
op.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);
op.setInterval(1000);//每隔一秒定位一次
op.setNeedAddress(true);//是否需要返回地点
op.setMockEnable(true);//是否虚拟定位
client.setLocationOption(op);
client.startLocation();
}
@RequiresApi(api = Build.VERSION_CODES.M)
public void initPermission(){
if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
for(String per:permissions){
if(checkSelfPermission(per)!= PackageManager.PERMISSION_GRANTED){
noPermission = true;
break;
}
}
}
if(noPermission){
//去申请权限
requestPermissions(permissions,100);
}
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
if(requestCode == 100){
for (int i = 0;i < grantResults.length;i++){
if(grantResults[i] != PackageManager.PERMISSION_GRANTED){
isOk = true;
break;
}
}
if(isOk){
Log.e("error###","没有成功！！！！");
}
}
}
@Override
public void onLocationChanged(AMapLocation aMapLocation) {
Log.e("ZXY","errorCode:"+aMapLocation.getErrorCode());
Log.e("ZXY","errorInfo:"+aMapLocation.getErrorInfo());
Log.e("ZXY","地址："+aMapLocation.getAddress());
Log.e("ZXY","纬度："+aMapLocation.getLatitude());
Log.e("ZXY","经度："+aMapLocation.getLongitude());
//显示系统小蓝点
if(aMapLocation.getErrorCode() == 0){
onLocationChangedListener.onLocationChanged(aMapLocation);//显示系统小蓝点
}
Toast.makeText(this, "定位地址："+aMapLocation.getAddress(), Toast.LENGTH_SHORT).show();
}
@Override
protected void onPause() {
super.onPause();
mapView.onPause();
}
@Override
protected void onResume() {
super.onResume();
mapView.onResume();
}
@Override
protected void onDestroy() {
super.onDestroy();
mapView.onDestroy();
}
@Override
public void activate(OnLocationChangedListener onLocationChangedListener) {
this.onLocationChangedListener = onLocationChangedListener;
if (client == null){
initLocation();
}
}
@Override
public void deactivate() {
onLocationChangedListener = null;
if(onLocationChangedListener != null){
client.stopLocation();
client.onDestroy();
}
client = null;
}
@Override
public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
super.onSaveInstanceState(outState, outPersistentState);
mapView.onSaveInstanceState(outState);
}
}
效果图：
