Android 集成高德地图

素颜马尾好姑娘i 2022-07-18 06:17 309阅读 0赞

**需要完成效果：集成高德地图，实现定位功能，并且实时刷新位置，每25秒自动刷新位置。**

**布局：**

<?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:tools="http://schemas.android.com/tools"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.example.administrator.jreduch08.WebViewActivity">
    
        <WebView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/wv"
            android:layout_alignParentTop="true"
            android:layout_alignParentStart="true"></WebView>
    
        <ProgressBar
            android:layout_width="100dp"
            android:layout_height="100dp"
            style="@android:style/Widget.ProgressBar.Large"
            android:id="@+id/pb"
            android:layout_centerVertical="true"
            android:layout_centerHorizontal="true"/>
    </RelativeLayout>

代码：

package com.example.administrator.jreduch08;
    
    import android.location.Location;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.util.Log;
    import android.webkit.WebChromeClient;
    import android.webkit.WebSettings;
    import android.webkit.WebView;
    import android.webkit.WebViewClient;
    import android.widget.ProgressBar;
    
    public class WebViewActivity extends AppCompatActivity
     implements LocationInfo.IfloadWebView{
        private WebView wv;
        private ProgressBar pb;
        private LocationInfo locationInfo;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_web_view);
            wv= (WebView) findViewById(R.id.wv);
            pb= (ProgressBar) findViewById(R.id.pb);
    
            WebSettings set=wv.getSettings();
            set.setJavaScriptEnabled(true);
    
            set.setSupportZoom(true);
    
            set.setDisplayZoomControls(true);
    
            wv.setWebViewClient(new WebViewClient());
            //在自己写的页面打开网页
            wv.setWebChromeClient(new MyWebChromeClient());
            
            locationInfo=new LocationInfo(this);
            locationInfo.getLocation();
        }
    
        @Override
        public void loadLocation(Location location) {
            wv.loadUrl("http://m.amap.com/?q="
                    +location.getLatitude()
                    +","
                    +location.getLongitude());
        }
    
        //加载进度
        public class MyWebChromeClient extends WebChromeClient{
            @Override
            public void onProgressChanged(WebView view, int newProgress) {
                super.onProgressChanged(view, newProgress);
                if(newProgress==100){
                    Log.d("====Progress",""+newProgress);
                    pb.setVisibility(view.GONE);
                }
            }
        }
    }

新建类：

package com.example.administrator.jreduch08;
    
    import android.Manifest;
    import android.content.Context;
    import android.content.pm.PackageManager;
    import android.location.Address;
    import android.location.Criteria;
    import android.location.Geocoder;
    import android.location.Location;
    import android.location.LocationListener;
    import android.location.LocationManager;
    import android.os.Bundle;
    import android.support.v4.app.ActivityCompat;
    import android.util.Log;
    
    import java.io.IOException;
    import java.util.List;
    import java.util.Locale;
    
    /**
     * Created by Administrator on 2016/9/7.
     */
    public class LocationInfo {
        private Context context;
        private LocationManager lm;
        private IfloadWebView ifloadWebView;
        public LocationInfo(Context context) {
            this.context = context;
            ifloadWebView= (IfloadWebView) context;
        }
    
        public Location getLocation() {
            lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);
            Criteria criteria = new Criteria();
            criteria.setAccuracy(Criteria.ACCURACY_FINE);
            //定位经度
            criteria.setAltitudeRequired(false);
            //是否需要海拔信息
            criteria.setPowerRequirement(Criteria.POWER_LOW);
            String provider = lm.getBestProvider(criteria, true);
    
            if (ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) !=
                    PackageManager.PERMISSION_GRANTED &&
                    ActivityCompat.checkSelfPermission(context, Manifest.permission.ACCESS_COARSE_LOCATION) !=
                    PackageManager.PERMISSION_GRANTED) {
                return null;
            }
            lm.requestLocationUpdates(provider, 5000*5, 0f, locationListener);
            Location location=lm.getLastKnownLocation(provider);
            return location;
        }
    
        private final LocationListener locationListener=new LocationListener() {
            @Override
            public void onLocationChanged(Location location) {
                //位置发生改变时
                onLocationChange(location);
    //            getAddress(location);
            }
    
            @Override
            public void onStatusChanged(String provider, int status, Bundle extras) {
               //状态发生改变时
            }
    
            @Override
            public void onProviderEnabled(String provider) {
    
            }
    
            @Override
            public void onProviderDisabled(String provider) {
    
            }
        };
    
        public void onLocationChange(Location location){
            if(location!=null){
                Log.d("=====纬度",""+location.getLatitude());
                Log.d("=====经度",""+location.getLongitude());
                ifloadWebView.loadLocation(location);
            }else {
                Log.d("====","获取定位失败");
            }
        }
        public interface IfloadWebView{
            public void loadLocation(Location location);
        }   
    }

实现效果：  
![Center][]

[Center]: /images/20220717/de142313fb8649ebbf9bfda8f60e29d7.png