国家开发大学网站作业怎么做,中国机械设备制造网,网站建设培训报名,wordpress查看分类id#x1f4d6;第3章 初始化定位并显示小蓝点 ✅第1步#xff1a;配置AndroidManifest.xml✅第2步#xff1a;设置定位蓝点✅第3步#xff1a;初始化定位✅完整代码 ✅第1步#xff1a;配置AndroidManifest.xml
在application标签下声明Service组件
service android:n… 第3章 初始化定位并显示小蓝点 ✅第1步配置AndroidManifest.xml✅第2步设置定位蓝点✅第3步初始化定位✅完整代码 ✅第1步配置AndroidManifest.xml
在application标签下声明Service组件
service android:namecom.amap.api.location.APSService/service声明权限 !--地图相关--uses-permission android:nameandroid.permission.INTERNET / !-- 访问网络--uses-permission android:nameandroid.permission.ACCESS_COARSE_LOCATION / !-- 网络定位 --uses-permission android:nameandroid.permission.ACCESS_FINE_LOCATION / !-- GPS定位 --uses-permission android:nameandroid.permission.ACCESS_WIFI_STATE / !-- 访问WiFi网络定位 --uses-permission android:nameandroid.permission.CHANGE_WIFI_STATE / !-- 获取wifi权限进行网络定位 --uses-permission android:nameandroid.permission.READ_EXTERNAL_STORAGE /!-- 用于读数据 --uses-permission android:nameandroid.permission.WRITE_EXTERNAL_STORAGE / !-- 用于写入缓存数据到扩展存储卡 --uses-permission android:nameandroid.permission.ACCESS_LOCATION_EXTRA_COMMANDS / !-- 用于申请调用A-GPS模块 --uses-permission android:nameandroid.permission.FOREGROUND_SERVICE / !-- 如果设置了target 28 如果需要启动后台定位则必须声明这个权限 --uses-permission android:nameandroid.permission.ACCESS_NETWORK_STATE / !--允许程序获取网络状态--设置高德Key在上一步显示地图时已经完成
meta-data android:namecom.amap.api.v2.apikey android:valuekey//开发者申请的key /meta-data
✅第2步设置定位蓝点 //设置了定位的监听aMap.setLocationSource(this);//初始化定位蓝点样式类MyLocationStyle myLocationStyle;myLocationStyle new MyLocationStyle();myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_MAP_ROTATE);//设置定位模式myLocationStyle.interval(2000); //只在连续定位模式下生效myLocationStyle.showMyLocation(true);//设置是否显示定位小蓝点// 将定位蓝点移动到屏幕中心myLocationStyle.anchor(0.5f, 0.5f).myLocationType(MyLocationStyle.LOCATION_TYPE_SHOW);aMap.setMyLocationStyle(myLocationStyle);aMap.setMyLocationEnabled(true);// 是否启动显示定位蓝点,默认是false如果你不想显示蓝点精度圆圈可以参考下面设置 myLocationStyle.strokeColor(Color.argb(0, 0, 0, 0));//设置定位蓝点精度圆圈的边框颜色:无色myLocationStyle.radiusFillColor(Color.argb(0, 255, 255, 255)); // 设置精度圆圈背景色透明无色✅第3步初始化定位
实现LocationSource和AMapLocationListener接口重写activate、deactivate和onLocationChanged方法。 Overridepublic void activate(OnLocationChangedListener onLocationChangedListener) {}Overridepublic void deactivate() {}Overridepublic void onLocationChanged(AMapLocation aMapLocation) {}在activate中实现定位激活。 private OnLocationChangedListener mListener;//声明位置监听private AMapLocationClient mlocationClient;//声明定位客户端private AMapLocationClientOption mLocationOption;//声明定位参数配置选项/*** 激活定位*/Overridepublic void activate(LocationSource.OnLocationChangedListener listener) {mListener listener;if (mlocationClient null) {//初始化定位try {mLocationOption new AMapLocationClientOption();//初始化定位参数mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);//设置为高精度定位模式mlocationClient new AMapLocationClient(this);//声明定位客户端mlocationClient.setLocationListener(this);//设置定位回调监听mlocationClient.setLocationOption(mLocationOption);//设置定位参数mlocationClient.startLocation();//启动定位} catch (Exception e) {throw new RuntimeException(e);}}}在deactivate中实现停止定位。 /*** 停止定位*/Overridepublic void deactivate() {mListener null;if (mlocationClient ! null) {mlocationClient.stopLocation();mlocationClient.onDestroy();}mlocationClient null;}在onLocationChanged中监听定位回调。 private boolean isFirstLoc true;//判断是否第一次定位private LatLng currentLatLng;//当前定位/*** 监听定位回调* param aMapLocation*/Overridepublic void onLocationChanged(AMapLocation aMapLocation) {if (mListener ! null aMapLocation ! null) {if (aMapLocation.getErrorCode() 0) {//定位成功回调信息设置相关消息aMapLocation.getLocationType();//获取当前定位结果来源如网络定位结果详见官方定位类型表aMapLocation.getLatitude();//获取纬度aMapLocation.getLongitude();//获取经度aMapLocation.getAccuracy();//获取精度信息SimpleDateFormat df new SimpleDateFormat(yyyy-MM-dd HH:mm:ss);Date date new Date(aMapLocation.getTime());df.format(date);//定位时间aMapLocation.getAddress();//地址如果option中设置isNeedAddress为false则没有此结果网络定位结果中会有地址信息GPS定位不返回地址信息。aMapLocation.getCountry();//国家信息aMapLocation.getProvince();//省信息aMapLocation.getCity();//城市信息aMapLocation.getDistrict();//城区信息aMapLocation.getStreet();//街道信息aMapLocation.getStreetNum();//街道门牌号信息aMapLocation.getCityCode();//城市编码aMapLocation.getAdCode();//地区编码// 是否第一次定位if (isFirstLoc) {aMap.moveCamera(CameraUpdateFactory.zoomTo(16));//设置缩放级别currentLatLng new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude()); //获取当前定位aMap.moveCamera(CameraUpdateFactory.changeLatLng(currentLatLng));//移动到定位点//点击定位按钮 能够将地图的中心移动到定位点mListener.onLocationChanged(aMapLocation);isFirstLoc false;}} else {//显示错误信息Log.e(AmapError, location Error, ErrCode: aMapLocation.getErrorCode() , errInfo: aMapLocation.getErrorInfo());}}}**注意**检查是否开启了应用定位权限和高精度定位
✅完整代码
MainActivity类
package com.st.demo;
import android.os.Bundle;
import android.util.Log;
import androidx.appcompat.app.AppCompatActivity;
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.maps.AMap;
import com.amap.api.maps.CameraUpdateFactory;
import com.amap.api.maps.LocationSource;
import com.amap.api.maps.MapView;
import com.amap.api.maps.MapsInitializer;
import com.amap.api.maps.model.LatLng;
import com.amap.api.maps.model.MyLocationStyle;
import java.text.SimpleDateFormat;
import java.util.Date;public class MainActivity extends AppCompatActivity implements LocationSource, AMapLocationListener {private MapView mMapView;//声明一个地图视图对象private AMap aMap;//声明一个地图图层private OnLocationChangedListener mListener;//声明位置监听private AMapLocationClient mlocationClient;//声明定位客户端private AMapLocationClientOption mLocationOption;//声明定位参数配置选项private boolean isFirstLoc true;//判断是否第一次定位private LatLng currentLatLng;//当前定位Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//初始化地图定位initMap(savedInstanceState);}/*** 初始化地图* param savedInstanceState*/private void initMap(Bundle savedInstanceState) {//隐私合规接口MapsInitializer.updatePrivacyShow(this, true, true);MapsInitializer.updatePrivacyAgree(this, true);AMapLocationClient.updatePrivacyAgree(this, true);AMapLocationClient.updatePrivacyShow(this, true, true);//获取地图视图对象mMapView findViewById(R.id.map);//创建地图mMapView.onCreate(savedInstanceState);if (aMap null) {aMap mMapView.getMap();}//设置了定位的监听aMap.setLocationSource(this);//初始化定位蓝点样式类MyLocationStyle myLocationStyle;myLocationStyle new MyLocationStyle();myLocationStyle.myLocationType(MyLocationStyle.LOCATION_TYPE_MAP_ROTATE);//设置定位模式myLocationStyle.interval(2000); //只在连续定位模式下生效myLocationStyle.showMyLocation(true);//设置是否显示定位小蓝点// 将定位蓝点移动到屏幕中心myLocationStyle.anchor(0.5f, 0.5f).myLocationType(MyLocationStyle.LOCATION_TYPE_SHOW);aMap.setMyLocationStyle(myLocationStyle);aMap.setMyLocationEnabled(true);// 是否启动显示定位蓝点,默认是false。}/*** 激活定位*/Overridepublic void activate(LocationSource.OnLocationChangedListener listener) {mListener listener;if (mlocationClient null) {//初始化定位try {mLocationOption new AMapLocationClientOption();//初始化定位参数mLocationOption.setLocationMode(AMapLocationClientOption.AMapLocationMode.Hight_Accuracy);//设置为高精度定位模式mlocationClient new AMapLocationClient(this);//声明定位客户端mlocationClient.setLocationListener(this);//设置定位回调监听mlocationClient.setLocationOption(mLocationOption);//设置定位参数mlocationClient.startLocation();//启动定位} catch (Exception e) {throw new RuntimeException(e);}}}/*** 停止定位*/Overridepublic void deactivate() {mListener null;if (mlocationClient ! null) {mlocationClient.stopLocation();mlocationClient.onDestroy();}mlocationClient null;}/*** 监听定位回调* param aMapLocation*/Overridepublic void onLocationChanged(AMapLocation aMapLocation) {if (mListener ! null aMapLocation ! null) {if (aMapLocation.getErrorCode() 0) {//定位成功回调信息设置相关消息aMapLocation.getLocationType();//获取当前定位结果来源如网络定位结果详见官方定位类型表aMapLocation.getLatitude();//获取纬度aMapLocation.getLongitude();//获取经度aMapLocation.getAccuracy();//获取精度信息SimpleDateFormat df new SimpleDateFormat(yyyy-MM-dd HH:mm:ss);Date date new Date(aMapLocation.getTime());df.format(date);//定位时间aMapLocation.getAddress();//地址如果option中设置isNeedAddress为false则没有此结果网络定位结果中会有地址信息GPS定位不返回地址信息。aMapLocation.getCountry();//国家信息aMapLocation.getProvince();//省信息aMapLocation.getCity();//城市信息aMapLocation.getDistrict();//城区信息aMapLocation.getStreet();//街道信息aMapLocation.getStreetNum();//街道门牌号信息aMapLocation.getCityCode();//城市编码aMapLocation.getAdCode();//地区编码// 是否第一次定位if (isFirstLoc) {aMap.moveCamera(CameraUpdateFactory.zoomTo(16));//设置缩放级别currentLatLng new LatLng(aMapLocation.getLatitude(), aMapLocation.getLongitude()); //获取当前定位aMap.moveCamera(CameraUpdateFactory.changeLatLng(currentLatLng));//移动到定位点//点击定位按钮 能够将地图的中心移动到定位点mListener.onLocationChanged(aMapLocation);isFirstLoc false;}} else {//显示错误信息Log.e(AmapError, location Error, ErrCode: aMapLocation.getErrorCode() , errInfo: aMapLocation.getErrorInfo());}}}/*** 生命周期-onDestroy*/Overrideprotected void onDestroy() {super.onDestroy();mMapView.onDestroy(); //销毁地图}/*** 生命周期-onResume*/Overrideprotected void onResume() {super.onResume();mMapView.onResume(); //重新绘制加载地图}/*** 生命周期-onPause*/Overrideprotected void onPause() {super.onPause();mMapView.onPause();//暂停地图的绘制}/*** 生命周期-onSaveInstanceState*/Overrideprotected void onSaveInstanceState(Bundle outState) {super.onSaveInstanceState(outState);mMapView.onSaveInstanceState(outState);//保存地图当前的状态}
}activity_main.xml布局文件
?xml version1.0 encodingutf-8?
LinearLayout xmlns:androidhttp://schemas.android.com/apk/res/androidxmlns:apphttp://schemas.android.com/apk/res-autoxmlns:toolshttp://schemas.android.com/toolsandroid:layout_widthmatch_parentandroid:layout_heightmatch_parenttools:context.MainActivitycom.amap.api.maps.MapViewandroid:idid/mapandroid:layout_widthmatch_parentandroid:layout_heightmatch_parent/com.amap.api.maps.MapView/LinearLayoutAndroidManifest.xml中的权限相关省略参考上面的。 ✅第1,2章 Android搭建3D高德地图详细教 ✅第 3 章 初始化定位并显示小蓝点 ✅第 4 章Android高德地图绘制标记点Marker ✅第 5 章Android高德地图控件交互详细介绍
