达成的第一种用GPS 定位的代码

发布时间：2021-11-25 20:55:47 所属栏目：教程来源：互联网

导读：package com.studio.Android.chp08.ex01; import android.app.Activity; import android.content.Context; import android.content.Intent; import android.location.Criteria; import android.location.Location; import android.location.LocationListener

package com.studio.Android.chp08.ex01;


import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.location.Criteria;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class CurrentLocation extends Activity {
    /** Called when the activity is first created. */


      private Location local=null;
      private int i=0;

     /**
     * LocationListener 是一个接口
     * new LocationListener() 去实例化这个接口
     * new LocationListener() {}对接口的方法进行实现
     *
     * 整体而言是个成员变量复制语句，可以放到前面去
     * 这个成员变量是 LocationListener 类型
     */
       private final LocationListener locationListener = new LocationListener() {
            public void onLocationChanged(Location location) {
                updateWithNewLocation(location);//地址改变
                System.out.println("the onLocationChanged");
            }
            public void onProviderDisabled(String provider){
                updateWithNewLocation(null);//地址失效
                System.out.println("the onProviderDisabled");
            }
            public void onProviderEnabled(String provider){
                System.out.println("the onProviderEnabled");

            }

            public void onStatusChanged(String provider, int status,Bundle extras){
                System.out.println("the onStatusChanged");


            }
        };


        public Location getLocal() {
            return local;
        }


        public void setLocal(Location local) {
            this.local = local;
        }


        @Override
        public void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);


            setContentView(R.layout.main); //选择布局，用 main 里面的布局方式

            Button btv=(Button)findViewById(R.id.GoSecond);

            LocationManager locationManager;
            String serviceName = Context.LOCATION_SERVICE;
            locationManager = (LocationManager)getSystemService(serviceName);
            String provider = LocationManager.GPS_PROVIDER;



            Location location = locationManager.getLastKnownLocation(provider);

            if(location!=null){
                    this.setLocal(location);
                   this.updateWithNewLocation(location);


            }


            locationManager.requestLocationUpdates(provider, 2000, 0,
                    locationListener);//注册了监听器


            btv.setOnClickListener(new View.OnClickListener(){

                public void onClick(View v) {
                    // TODO 实现这个接口的方法www.linuxidc.com

                    Intent intent = new Intent();

                    if(CurrentLocation.this.local!=null){
                    //这个是海拔啊老兄    double alti=CurrentLocation.this.local.getAltitude();

                        double lati = CurrentLocation.this.local.getLatitude();

                        double logti=CurrentLocation.this.local.getLongitude();

                        intent.putExtra("Lati",lati);
                        intent.putExtra("Lnti", logti);
                    }
                    intent.setClass(CurrentLocation.this, LocationName.class);
                    startActivity(intent);


                }


            });



        }


        private void updateWithNewLocation(Location location) {

            String latLongString;
            TextView myLocationText;

            myLocationText = (TextView)findViewById(R.id.myLocationText);
            if (location != null) {
                double lat = location.getLatitude();
                double lng = location.getLongitude();

                this.setLocal(location);//更新本类的location
                System.out.println(" the lat is "+lat+" the lng is "+lng);

                latLongString = "第 "+ ++i+" 次更新    纬度是:" + lat + "n经度:" + lng;

            } else {
                latLongString = "无法获取地理信息";
            }

            myLocationText.setText("您当前的位置是:n" +latLongString);
        }
}
第二个界面显示地址解析的界面

manifest

package com.studio.android.chp08.ex01;

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import android.app.Activity;
import android.content.Intent;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.widget.TextView;

/**
*
* 得到具体的地名www.linuxidc.com
* @author Administrator
*
*/

public class LocationName extends Activity {
    private   String latLongString=null;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);
        setContentView(R.layout.addressname);

        List<Address> addList = null;
        Geocoder ge = new Geocoder(this,Locale.CHINA);

        TextView myLocationText=(TextView) findViewById(R.id.CityName);
        Intent GetIntent=this.getIntent();


        if(GetIntent==null){

            System.out.println(" it is null");
        }

        else if (GetIntent!=null){
            System.out.println("it is not null");

            double lati2=GetIntent.getDoubleExtra("Lati", 119.3090049);
            double longti2=GetIntent.getDoubleExtra("Lnti", 26.0972567);



            try {
                addList = ge.getFromLocation(lati2,longti2, 1);
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }


        if(addList!=null && addList.size()>0){
            latLongString=new String();
            for(int i=0; i<addList.size(); i++){
                Address ad = addList.get(i);
                latLongString += "n";
               latLongString +=ad.getAddressLine(0)+ad.getAddressLine(1)+ad.getAddressLine(2);


            }

        }

        myLocationText.setText("您当前的位置是:n" +latLongString);


    }




}
xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.studio.android.chp08.ex01"
      android:versionCode="1"
      android:versionName="1.0.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".CurrentLocation"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
       <activity android:name=".LocationName"
                  android:label="@string/app_name">

        </activity>
    </application>

    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    
</manifest>
address.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
  android:layout_width="fill_parent"
  android:layout_height="fill_parent">

    <TextView

     android:id="@+id/CityName"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"

    />
    <ListView

    android:id="@+id/list"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    />
</LinearLayout>
main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
    
<TextView
    android:id="@+id/myLocationText"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
      android:text="@string/hello"
    />

    <Button
    android:id="@+id/getLocation"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="@string/GetLocation"

     />

     <Button
     android:id="@+id/GoSecond"

     android:layout_width="fill_parent"
     android:layout_height="wrap_content"

     android:text="@string/GoSecond"
     />
</LinearLayout>

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达成的第一种 用GPS 定位的 代码

达成的第一种用GPS 定位的代码