百度SDK地圖定位

1.關於百度定位，首先要在百度開發者中心那裏新申請一個應用並且下載相對應的sdk

得到一個APP Key作爲應用的唯一標示

2.在應用的清單文件裏面加上這段話

<meta-data
            android:name="com.baidu.lbsapi.API_KEY"
            android:value="your app key" />  //填入你的app key

3.加上對應的權限

 <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.WAKE_LOCK"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
<uses-permission android:name="android.permission.GET_TASKS" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_SETTINGS" />

4.在全局Application那裏初始化百度SDK

public class BaseApplication extends Application{
      @Override
    public void onCreate() {
    	super.onCreate();
    	//在使用SDK各組件之前初始化context信息，傳入ApplicationContext  
        //注意該方法要再setContentView方法之前實現  
        SDKInitializer.initialize(getApplicationContext());  
    }
}

5.定位的代碼

public class LocationActivity extends Activity{
	MapView mMapView;
	BaiduMap mBaiduMap;
	LocationClient mLocClient;
	public MyLocationListenner myListener = new MyLocationListenner();
	private boolean isFirst = true;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
    	super.onCreate(savedInstanceState);
    	setContentView(R.layout.activity_main);
        mMapView = (MapView) findViewById(R.id.mapview);
        mBaiduMap = mMapView.getMap();
        
     // 開啓定位圖層
        mBaiduMap.setMyLocationEnabled(true);
        // 定位初始化
        mLocClient = new LocationClient(getApplicationContext());
        mLocClient.registerLocationListener(myListener);
        LocationClientOption option = new LocationClientOption();
        option.setOpenGps(true); // 打開gps
        option.setCoorType("bd09ll"); // 設置座標類型
        option.setScanSpan(1000);
        option.setIsNeedAddress(true);
        option.setOpenGps(true);
        mLocClient.setLocOption(option);
        mLocClient.start();
        
    }
    /**
     * 定位SDK監聽函數
     */
    public class MyLocationListenner implements BDLocationListener {

        @Override
        public void onReceiveLocation(BDLocation location) {
            // map view 銷燬後不在處理新接收的位置
            if (location == null || mMapView == null) {
                return;
            }
            MyLocationData locData = new MyLocationData.Builder()
                    .accuracy(location.getRadius())
                            // 此處設置開發者獲取到的方向信息，順時針0-360
                    .direction(100).latitude(location.getLatitude())
                    .longitude(location.getLongitude()).build();
            mBaiduMap.setMyLocationData(locData);
            	isFirst = false;
                LatLng ll = new LatLng(location.getLatitude(),
                        location.getLongitude());
                MapStatus.Builder builder = new MapStatus.Builder();
                builder.target(ll).zoom(11.0f);
                mBaiduMap.animateMapStatus(MapStatusUpdateFactory.newMapStatus(builder.build()));
            
        }

        public void onReceivePoi(BDLocation poiLocation) {
        }
    }
    @Override
	protected void onDestroy() {
		super.onDestroy();
		// 退出時銷燬定位
		mLocClient.stop();
        // 關閉定位圖層
        mBaiduMap.setMyLocationEnabled(false);
        mMapView = null;
		mMapView.onDestroy();
	}

	@Override
	protected void onResume() {
		super.onResume();
		mMapView.onResume();
	}

	@Override
	protected void onPause() {
		super.onPause();
		mMapView.onPause();
	}
}

首先設置相關的參數，然後開啓定位服務，然後再把座標移動到所定位的位置那裏，就是實現的定位的功能