Android 呼叫GPS 程式碼 @ 自由手記

執行畫面

AndroidManifest.xml權限配置如下

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

package="com.example.jrdgpst02"

android:versionCode="1"

android:versionName="1.0" >

<uses-sdk

android:minSdkVersion="8"

<uses-feature android:name="android.hardware.location.gps"/>

<uses-permission android:name="android.permission.INTERNET"></uses-permission>

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

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"></uses-permission>

<application

android:allowBackup="true"

android:icon="@drawable/ic_launcher"

android:label="@string/app_name"

android:theme="@style/AppTheme" >

<activity

android:name="com.example.jrdgpst02.MainActivity"

android:label="@string/app_name" >

<intent-filter>

</intent-filter>

</activity>

</application>

</manifest>

<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"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

tools:context=".MainActivity" >

<TextView

android:id="@+id/textView1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_alignParentLeft="true"

android:layout_alignParentTop="true"

android:layout_marginLeft="39dp"

android:layout_marginTop="41dp"

android:text="TextView" />

</RelativeLayout>

程式碼

package com.example.jrdgpst02;
import java.util.List;
import android.location.Address;
import android.location.Geocoder;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;
public class MainActivity extends Activity{ 
 private LocationManager locationManager;
    TextView t1;
    GPSListener   locationListenerNGPS ;
    GPSListener   locationListenerGPS ;
    Geocoder geocoder;  
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main); 
    geocoder = new Geocoder(this);
    t1=(TextView)findViewById(R.id.textView1);
      locationManager = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
      locationListenerNGPS = new GPSListener();
      locationListenerGPS = new GPSListener();
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNGPS);     locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGPS);
      t1.setText("Try GPS!!\r\n"); 
 }
 class GPSListener implements LocationListener {   
    @Override
    public void onLocationChanged(Location location) {
     t1.append("location: lat:" + location.getLatitude() + ", long"+location.getLongitude() + "\r\n");          
      String strAddress = "";
         List places = null;    
         try
         {
             places = geocoder.getFromLocation(location.getLatitude(), location.getLongitude(), 5);           
         }catch(Exception e)        {
             e.printStackTrace();
         }
              if(places != null && places.size() > 0)
         {
             strAddress = ((Address)places.get(0)).getAddressLine(0)+ "," +
               ((Address)places.get(0)).getAddressLine(1)+","+
               ((Address)places.get(0)).getCountryName();
         }       
         t1.append(strAddress+"\n");  
    }     
    @Override
    public void onProviderDisabled(String provider) {}
    @Override
    public void onProviderEnabled(String provider) {}
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras){}
 }
 @Override
 public boolean onCreateOptionsMenu(Menu menu) {
  // Inflate the menu; this adds items to the action bar if it is present.
  getMenuInflater().inflate(R.menu.main, menu);
  return true;
 }
}