简单的Gps

需要导依赖
implementation ‘com.amap.api:map2d:5.2.0’
implementation ‘com.amap.api:location:4.2.0’

package com.example.day09;

import android.Manifest;
import android.content.pm.PackageManager;
import android.graphics.Color;
import android.os.Build;
import android.os.Bundle;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.annotation.RequiresApi;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
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 MapsActivity extends AppCompatActivity implements LocationSource, AMapLocationListener {

    private MapView mapView;//高德用来显示地图的控件
    private AMap aMap;//MapView控制器->控制显示内容->绘制小蓝点
    private OnLocationChangedListener mListener;
    private AMapLocationClient mlocationClient;
    private AMapLocationClientOption mLocationOption;

    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity__map);
        checkPermisson();
        mapView = findViewById(R.id.map);
        mapView.onCreate(savedInstanceState);
        if (aMap==null)
            aMap = mapView.getMap();
        init();
    }

    //初始化定位小蓝点
    private void init(){
        // 自定义系统定位小蓝点
        MyLocationStyle myLocationStyle = new MyLocationStyle();
        myLocationStyle.myLocationIcon(BitmapDescriptorFactory
                .fromResource(R.mipmap.ding));// 设置小蓝点的图标
        myLocationStyle.strokeColor(Color.BLACK);// 设置圆形的边框颜色
        myLocationStyle.radiusFillColor(Color.argb(100, 0, 0, 180));// 设置圆形的填充颜色
        // myLocationStyle.anchor(int,int)//设置小蓝点的锚点
        myLocationStyle.strokeWidth(1.0f);// 设置圆形的边框粗细
        aMap.setMyLocationStyle(myLocationStyle);
        aMap.setLocationSource(this);
        aMap.setMyLocationEnabled(true);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        mapView.onDestroy();
    }

    @Override
    protected void onPause() {
        super.onPause();
        mapView.onPause();
    }

    @Override
    protected void onResume() {
        super.onResume();
        mapView.onResume();
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        //在activity执行onSaveInstanceState时执行mMapView.onSaveInstanceState (outState)，保存地图当前的状态
        mapView.onSaveInstanceState(outState);
    }

    @Override
    public void activate(OnLocationChangedListener onLocationChangedListener) {
        mListener = onLocationChangedListener;
        //初始化定位
        if (mlocationClient==null){
            mlocationClient = new AMapLocationClient(getApplicationContext());
            mLocationOption = new AMapLocationClientOption();
            mlocationClient.setLocationListener(this);//添加定位监听
            mLocationOption.setLocationMode(AMapLocationClientOption.
                    AMapLocationMode.Hight_Accuracy);
            mlocationClient.setLocationOption(mLocationOption);
            mlocationClient.startLocation();
        }
    }

    @Override
    public void deactivate() {
        mListener = null;
        if (mlocationClient != null) {
            mlocationClient.stopLocation();
            mlocationClient.onDestroy();
        }
        mlocationClient = null;
    }

    //定位坐标经纬度改变
    @Override
    public void onLocationChanged(AMapLocation aMapLocation) {
        if (aMapLocation.getErrorCode()==0)
            mListener.onLocationChanged(aMapLocation);// 显示系统小蓝点
    }
    private String[] permissions = new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION};
    @RequiresApi(api = Build.VERSION_CODES.M)
    public void checkPermisson(){
        boolean flag=true;//默认全部被申请过
        for(int i=0;i<permissions.length;i++){//只要有一个没有申请成功
            if(!(ActivityCompat.checkSelfPermission(this,permissions[i])== PackageManager.PERMISSION_GRANTED)){
                flag=false;
            }
        }
        if(!flag){
            //动态申请权限
            requestPermissions(permissions,100);
        }
    }
    //动态申请权限的疾厄宫
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if(requestCode==100){
            boolean flag=true;
            for(int i=0;i<grantResults.length;i++){
                if(grantResults[i]!=PackageManager.PERMISSION_GRANTED){
                    flag=false;
                }
            }
            if(flag){
                Toast.makeText(this, "ok ", Toast.LENGTH_SHORT).show();
            }else{
                Toast.makeText(this, "error", Toast.LENGTH_SHORT).show();
            }
        }
    }
}