Android获取经纬度

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。



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:"  
    />  
<TextView  
    android: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 cn.caiwb.location;  
    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 WIFI  
        public 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

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