Android 高手进阶教程(十四)之----Android Location的使用！！
大家好，今天说说Location, Location在Android开发中还是经常用到的，比如 通过经纬度获取天气，根据Location获取所在地区详细Address（比如Google Map开发).等。而在Android 中通过LocationManager来获取Location.通常获取Location有GPS获取，WIFI获取。我今天做一个简单的小Demo,来教大家如何获取Location,从而获取经纬度。下一节将教大家通过Location来获取Address.
首先第一步:
创建一个Android工程命名为LocationDemo.
第二步：修改main.xml代码如下:
<?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/longitude" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="longitude:" /><TextViewandroid:id="@+id/latitude" android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="latitude:" /></LinearLayout>
第三步:修改LocationDemo.java，代码如下:
package com.android.tutor;import android.app.Activity;import android.content.Context;import android.location.Location;import android.location.LocationManager;import android.os.Bundle;import android.widget.TextView;public class LocationDemo extends Activity { private TextView longitude;private TextView latitude; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); longitude = (TextView)findViewById(R.id.longitude); latitude = (TextView)findViewById(R.id.latitude); Location mLocation = getLocation(this); longitude.setText("Longitude: " + mLocation.getLongitude()); latitude.setText("Latitude: " + mLocation.getLatitude()); } //Get the Location by GPS or WIFIpublic Location getLocation(Context context) {LocationManager locMan = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE);Location location = locMan.getLastKnownLocation(LocationManager.GPS_PROVIDER);if (location == null) {location = locMan.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);}return location;}}
第四步：增加权限，修改AndroidManifest.xml代码如下（第16行为所增行）：
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.android.tutor" android:versionCode="1" android:versionName="1.0"> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".LocationDemo" 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-sdk android:minSdkVersion="7" /><uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/></manifest>
第五步:运行LocationDemo工程，所得效果如下(真机深圳测试):
http://hi.csdn.net/attachment/201006/15/0_1276610372yWz9.gif
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