1、User Location 能做什么
1) 获取用户的位置
2)追踪用户的移动
2、User Location的关键API
1)LocationManager：用于光了android的用户定位服务
2) LocationProvider:提供多种定位方式，供开发者选择
3、定位方式的分类：
1)GPS定位：使用GPS卫星进行定位，需要在androidManifest.xml文件中添加如下权限声明：
android.permission.ACCESS_FINE_LOCTION
2)NETWORK定位
使用信号接收塔和Wi_Fi介入定进行定位，需要在需要在androidManifest.xml文件中添加如下权限声明：
android.permission.ACCESS_FINE_LOCTION
或
android.permission.ACCESS_COARSE_LOCTION
4、获取用户当前的位置的步骤
a.在androidManifest.xml中声明相应的权限
b.获取lacationManager的对象
c.选择LocationProvider
d.绑定LocationListener对象
androidManifest.xml
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="test.gps01" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".TestGPS01Activity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/></manifest>
布局文件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:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/hello" /> <Button android:id="@+id/button" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="测试" /></LinearLayout>
mainActivity文件：
import android.app.Activity;import android.content.Context;import android.location.Location;import android.location.LocationListener;import android.location.LocationManager;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class TestGPS01Activity extends Activity { /** Called when the activity is first created. */ private Button button = null; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); button = (Button)findViewById(R.id.button); button.setOnClickListener(new ButtonListener()); } private class ButtonListener implements OnClickListener { @Override public void onClick(View v) { // TODO Auto-generated method stub //获取LocationManager对象 LocationManager locationManager = (LocationManager)TestGPS01Activity.this.getSystemService(Context.LOCATION_SERVICE); locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, new TestLocationListener()); } } private class TestLocationListener implements LocationListener { @Override public void onLocationChanged(Location location) { // TODO Auto-generated method stub System.out.println(location.getLongitude()); System.out.println(location.getLatitude()); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } } }