使用百度地图sdk

一.申请百度地图sdk的APIKey

1.数字签名的查看方法：

      打开Eclipse->Window->Preferences->Android->Build

2.在AndroidManifest.xml的<application>标签中配置申请到的APIKey

二.让地图显示出来

1.将sdk中的lib包解压（Lib包中包含使用百度地图所必须依赖的库），将其中的jar包复制到项目的libs目录下

2.在项目的libs目录下新建armeabi目录，将.so文件复制到该目录下

3.代码部分

    3.1在activity_main.xml中添加MapView控件布局

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.baidu.mapapi.map.MapView
        android:id="@+id/map_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clickable="true"/>

</LinearLayout>

    3.2加载地图控件以及后续操作

package com.example.baidumaptest;
import java.util.List;
import com.baidu.mapapi.SDKInitializer;
import com.baidu.mapapi.map.BaiduMap;
import com.baidu.mapapi.map.MapStatusUpdate;
import com.baidu.mapapi.map.MapStatusUpdateFactory;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.MyLocationData;
import com.baidu.mapapi.model.LatLng;
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.Menu;
import android.view.MenuItem;
import android.widget.Toast;

public class MainActivity extends Activity {
	private MapView mapView;//mapView控件，用于展示百度地图
	private BaiduMap baiduMap;//BaiduMap类是地图的总控制器
	private LocationManager locationManager;
	private String provider;
	private boolean isFirstLocate=true;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		//进行初始化操作,该方法一定要放在setContentView()方法前面，否则会出错
		SDKInitializer.initialize(getApplicationContext());//调用getApplicationContext()方法获取一个全局Context参数
		setContentView(R.layout.activity_main);
		mapView=(MapView)findViewById(R.id.map_view);
		baiduMap=mapView.getMap();//获得BaiduMap的实例，利用该对象就能对地图进行各种操作，如：设置缩放级别和将地图定位到某个经纬度上
		baiduMap.setMyLocationEnabled(true);//实现当前位置必须开启，否则无法在地图上展示，程序关闭时应关闭
		locationManager=(LocationManager) getSystemService(Context.LOCATION_SERVICE);
		//获取所有可用的位置提供器
		List<String> providerList=locationManager.getProviders(true);
		if (providerList.contains(LocationManager.GPS_PROVIDER)) {
			provider=LocationManager.GPS_PROVIDER;
		}else if (providerList.contains(LocationManager.NETWORK_PROVIDER)) {
			provider=LocationManager.NETWORK_PROVIDER;
		}else {
			//当没有可用位置提供器时，弹出Toast提示用户
			Toast.makeText(this, "No location provider to use", Toast.LENGTH_SHORT).show();
			return;
		}
		Location location=locationManager.getLastKnownLocation(provider);
		if (location!=null) {
			navigateTo(location);
		}
		locationManager.requestLocationUpdates(provider, 5000, 1, locationListener);
	}
	
	private void navigateTo(Location location) {
		if (isFirstLocate) {       //加判断，防止多次调用animateMapStatus(),地图移动到当前位置只需要在程序第一次启动时调用一次即可
			//LatLng用于存放经纬度,第一个参数为纬度，第二个参数为经度
			LatLng latLng=new LatLng(location.getLatitude(), location.getLongitude());
			MapStatusUpdate update=MapStatusUpdateFactory.newLatLng(latLng);//将地图定位到某一个经纬度
			baiduMap.animateMapStatus(update);
			update=MapStatusUpdateFactory.zoomTo(16f);//设置地图缩放级别为16
			baiduMap.animateMapStatus(update);
			isFirstLocate=false;
		}
		MyLocationData.Builder locationBuilder=new MyLocationData.Builder();//该类用来封装设备当前位置
		locationBuilder.latitude(location.getLatitude());//传入经纬度信息
		locationBuilder.longitude(location.getLongitude());
		MyLocationData locationData=locationBuilder.build();//要封装的数据设置完，调用该类的build方法，返回MyLocationData实例
		baiduMap.setMyLocationData(locationData);//将上述实例传入setMyLocationData即可显示当前位置
	}
	
	
	LocationListener locationListener=new LocationListener() {
		
		@Override
		public void onStatusChanged(String provider, int status, Bundle extras) {
			// TODO Auto-generated method stub
			
		}
		
		@Override
		public void onProviderEnabled(String provider) {
			// TODO Auto-generated method stub
			 
		}
		
		@Override
		public void onProviderDisabled(String provider) {
			// TODO Auto-generated method stub
			
		}
		
		@Override
		public void onLocationChanged(Location location) {
			if (location!=null) {
				navigateTo(location);
			}
		}
	};
	
	/*重写下列方法对百度地图api进行管理，以保证资源能够得到及时释放*/
	@Override
	protected void onDestroy() {
		super.onDestroy();
		baiduMap.setMyLocationEnabled(false);
		mapView.onDestroy();
		if (locationManager!=null) {
			//关闭程序时将将监听器移除
			locationManager.removeUpdates(locationListener);
		}
	}
	
	@Override
	protected void onPause() {
		super.onPause();
		mapView.onPause();
	}
	
	@Override
	protected void onResume() {
		super.onResume();
		mapView.onResume();
	}

	@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;
	}

	@Override
	public boolean onOptionsItemSelected(MenuItem item) {
		// Handle action bar item clicks here. The action bar will
		// automatically handle clicks on the Home/Up button, so long
		// as you specify a parent activity in AndroidManifest.xml.
		int id = item.getItemId();
		if (id == R.id.action_settings) {
			return true;
		}
		return super.onOptionsItemSelected(item);
	}
}

注意：

1.申请必要权限以免崩溃

    <uses-permission android:name="android.permission.GET_ACCOUNTS"/>
    <uses-permission android:name="android.permission.USE_CREDENTIALS"/>
    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/>
    <uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="com.android.launcher.permission.READ_SETTINGS"/>
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.BROADCAST_STICKY"/>
    <uses-permission android:name="android.permission.WRITE_SETTINGS"/>
    <uses-permission android:name="android.permission.READ_PHONE_STATE"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>"