获取位置信息

按照《深入浅出google android》上第八章 第一节的讲解，把程序写好，运行后，总是显示“无法获取位置信息”。

后来才知道，模拟器运行起来后， 要点下emnulate control窗口中的send按钮，再运行程序，程序才能显示出经纬度。

 

 我是分割线

 

搞了半天，不知道怎么上传该项目。贴下源代码吧，

主文件除了显示当前位置经纬度，加了一个地图的显示。

package com.tudou2;

import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.tudou2.R;
import android.app.Activity;
import android.content.Context;
import android.location.Location;
import android.location.LocationManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.LinearLayout;
import android.widget.TextView;

public class tudou2 extends MapActivity  {
	LinearLayout linearLayout;

	/** Called when the activity is first created. */    
	@Override    
	public void onCreate(Bundle savedInstanceState) {        
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		LocationManager locationManager;
		String serviceName = Context.LOCATION_SERVICE;
		locationManager=(LocationManager)getSystemService(serviceName);
		String provider=LocationManager.GPS_PROVIDER;
		Location location=locationManager.getLastKnownLocation(provider);
		updateWithNewLocation(location);
	}        

	private void updateWithNewLocation(Location location){    	
		String latLongString;
		TextView myLocationText;
		myLocationText =(TextView)findViewById(R.id.text);
		if(location!=null){    		
			double lat= location.getLatitude();
			double lng= location.getLongitude();
			latLongString= "纬度："+lat+"/n经度:"+lng;
		}else{    		
			latLongString="无法获取地理信息";
		}    	
		myLocationText.setText("您当前的位置是:"+latLongString);
	}

	@Overrideprotected 
	boolean isRouteDisplayed() 
	{// TODO Auto-generated method stubreturn false;
	}
}

 

 

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"    
	android:id="@+id/text"    />        

	<com.google.android.maps.MapView            
	android:id="@+id/mapview"            
	android:layout_width="fill_parent"            
	android:layout_height="fill_parent"            
	android:clickable="true"            
	android:apiKey="0kpKXxsZVPeXxlhF6AkW_lCaPKd23aVrq5D7fWA"/>    
</LinearLayout>

 

 

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"      
	package="com.tudou2"      
	android:versionCode="1"      
	android:versionName="1.0"> 
	<uses-sdk android:minSdkVersion="8" />     

	<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
	<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />    
	<uses-permission android:name="android.permission.INTERNET" />    
	<uses-library  android:name="com.google.android.maps" />  <!--这句可能必须放在activity之前-->    

	<application android:icon="@drawable/icon" android:label="@string/app_name">       
		<uses-library  android:name="com.google.android.maps" />          
		<activity android:name=".tudou2" 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>    
</manifest>