一、问题描述

使用百度地图实现如图所示应用，首先自动定位当前我起始位置(小圆点位置)，并跟随移动不断自动定位我的当前位置

百度Api不同版本使用会有些差异，本例中加入lib如下：

二、编写MyApplication类

public class MyApplication extends Application {

static MyApplication myApplication;

BMapManager mBMapManager = null;

String mStrKey = "7ZfuRcOx1G3oZ8TKuTNGm4sO";

boolean m_bKeyRight = true; // 授权Key正确，验证通过

private List activityList = new LinkedList();

@Override

public void onCreate() {

myApplication = this;

initEngineManager(this);

super.onCreate();

}

public void initEngineManager(Context context) {

if (mBMapManager == null) {

mBMapManager = new BMapManager(context);

Toast.makeText(MyApplication.getInstance().getApplicationContext(),

"BMapManager 初始化SUCSUC!", Toast.LENGTH_LONG).show();

}

if (!mBMapManager.init(mStrKey, new MyGeneralListener())) {

Toast.makeText(MyApplication.getInstance().getApplicationContext(),

"BMapManager 初始化错误!", Toast.LENGTH_LONG).show();

}

}

public static MyApplication getInstance() {

if (myApplication == null) {

myApplication = new MyApplication();

}

return myApplication;

}

public void addActivity(Activity activity) {

activityList.add(activity);

}

public void exit() {

for (Activity activity : activityList) {

activity.finish();

}

System.exit(0);

}

// 常用事件监听，用来处理通常的网络错误，授权验证错误等

static class MyGeneralListener implements MKGeneralListener {

public void onGetNetworkState(int iError) {

if (iError == MKEvent.ERROR_NETWORK_CONNECT) {

Toast.makeText(

MyApplication.getInstance().getApplicationContext(),

"您的网络出错啦！", Toast.LENGTH_LONG).show();

} else if (iError == MKEvent.ERROR_NETWORK_DATA) {

Toast.makeText(

MyApplication.getInstance().getApplicationContext(),

"输入正确的检索条件！", Toast.LENGTH_LONG).show();

}

// ...

}

public void onGetPermissionState(int iError) {

if (iError == MKEvent.ERROR_PERMISSION_DENIED) {

// 授权Key错误：

Toast.makeText(

MyApplication.getInstance().getApplicationContext(),

"请输入正确的授权Key！",

Toast.LENGTH_LONG).show();

MyApplication.getInstance().m_bKeyRight = false;

}

}

}

}

三、编写主程序MainActivity，显示当前所处位置

主程序MainActity：

public class MainActivity extends Activity {

public MyApplication app;

static MapView mMapView = null;

public MKMapViewListener mMapListener = null;

MyLocationOverlay myLocationOverlay = null;

// 定位相关

LocationClient mLocClient;

public NotifyLister mNotifyer = null;

public MyLocationListenner myListener = new MyLocationListenner();

LocationData locData = null;

private MapController mMapController = null;

static MKSearch mkSerach;

Handler mHandler = new Handler() {

public void handleMessage(android.os.Message msg) {

Toast.makeText(MainActivity.this, "msg:" + msg.what,

Toast.LENGTH_SHORT).show();

};

};

static TextView showAddr;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

showAddr = (TextView) findViewById(R.id.showAddr);

MyIcon mi = new MyIcon(this);

//在屏幕中心点添加接我图标

getWindow().addContentView(

mi,

new LayoutParams(LayoutParams.FILL_PARENT,

LayoutParams.FILL_PARENT));

MyIcon2 m2 = new MyIcon2(this);

getWindow().addContentView(

m2,

new LayoutParams(LayoutParams.FILL_PARENT,

LayoutParams.FILL_PARENT));

mMapView = (MapView) findViewById(R.id.bmapsView);

mMapController = mMapView.getController();

initMapView();

app = MyApplication.getInstance();

mLocClient = new LocationClient(this);

mLocClient.registerLocationListener(myListener);

//搜索初始化

mkSerach = new MKSearch();

mkSerach.init(app.mBMapManager, new MKSearchListener() {

@Override

public void onGetWalkingRouteResult(MKWalkingRouteResult arg0,

int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onGetTransitRouteResult(MKTransitRouteResult arg0,

int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onGetSuggestionResult(MKSuggestionResult arg0, int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onGetPoiResult(MKPoiResult arg0, int arg1, int arg2) {

// TODO Auto-generated method stub

}

@Override

public void onGetPoiDetailSearchResult(int arg0, int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onGetDrivingRouteResult(MKDrivingRouteResult arg0,

int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onGetBusDetailResult(MKBusLineResult arg0, int arg1) {

// TODO Auto-generated method stub

}

@Override

public void onGetAddrResult(MKAddrInfo info, int arg1) {

showAddr.setText(info.strAddr);

}

});

//设置地图相关

LocationClientOption option = new LocationClientOption();

option.setOpenGps(true);

option.setCoorType("bd09ll");

option.setScanSpan(300000);

mLocClient.setLocOption(option);

mLocClient.start();

mMapView.getController().setZoom(16);

mMapView.getController().enableClick(true);

mMapView.displayZoomControls(true);

mMapListener = new MKMapViewListener() {

public void onMapMoveFinish() {

}

public void onClickMapPoi(MapPoi mapPoiInfo) {

// TODO Auto-generated method stub

String title = "";

if (mapPoiInfo != null) {

title = mapPoiInfo.strText;

Toast.makeText(MainActivity.this, title, Toast.LENGTH_SHORT)

.show();

}

}

};

mMapView.regMapViewListener(MyApplication.getInstance().mBMapManager,

mMapListener);

myLocationOverlay = new MyLocationOverlay(mMapView);

locData = new LocationData();

myLocationOverlay.setData(locData);

mMapView.getOverlays().add(myLocationOverlay);

myLocationOverlay.enableCompass();

mMapView.refresh();

}

private void initMapView() {

mMapView.setLongClickable(true);

}

/**

* 监听函数，又新位置的时候，格式化成字符串，输出到屏幕中

*/

public class MyLocationListenner implements BDLocationListener {

public void onReceiveLocation(BDLocation location) {

if (location == null)

return;

locData.latitude = location.getLatitude();

locData.longitude = location.getLongitude();

locData.direction = 2.0f;

locData.accuracy = location.getRadius();

locData.direction = location.getDerect();

Log.d("loctest",

String.format("before: lat: %f lon: %f",

location.getLatitude(), location.getLongitude()));

myLocationOverlay.setData(locData);

mMapView.refresh();

mMapController

.animateTo(new GeoPoint((int) (locData.latitude * 1e6),

(int) (locData.longitude * 1e6)), mHandler

.obtainMessage(1));

}

public void onReceivePoi(BDLocation poiLocation) {

if (poiLocation == null) {

return;

}

}

}

public class NotifyLister extends BDNotifyListener {

public void onNotify(BDLocation mlocation, float distance) {

}

}

@Override

protected void onPause() {

mMapView.onPause();

super.onPause();

}

@Override

protected void onResume() {

mMapView.onResume();

super.onResume();

}

@Override

protected void onSaveInstanceState(Bundle outState) {

super.onSaveInstanceState(outState);

mMapView.onSaveInstanceState(outState);

}

@Override

protected void onRestoreInstanceState(Bundle savedInstanceState) {

super.onRestoreInstanceState(savedInstanceState);

mMapView.onRestoreInstanceState(savedInstanceState);

}

public static void getPosition(GeoPoint g) {

mkSerach.reverseGeocode(g);

showAddr.setText("获取位置中...");

}

}

Xml布局：

xmlns:tools="http://schemas.android.com/tools"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:orientation="vertical"

>

android:id="@+id/showAddr"

android:gravity="center"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:text="选择地点"

android:textSize="20dp"

/>

android:id="@+id/bmapsView"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:clickable="true" />

三、绘制图形

MyIcon 的onDraw实现绘制中心点的图标，MyIcon2绘制指示器图标，如图所示

public class MyIcon extends View {

public static int w;

public static int h;

public static Bitmap mBitmap;

public MyIcon(Context context) {

super(context);

mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.me);

}

@Override

protected void onDraw(Canvas canvas) {

super.onDraw(canvas);

w = this.getWidth() / 2 - mBitmap.getWidth() / 2;

h = this.getHeight() / 2 - mBitmap.getHeight() / 2;

canvas.drawBitmap(mBitmap, w, h, null);

}

}

public class MyIcon2 extends View{

public static int w;

public static int h;

private Bitmap mBitmap;

public MyIcon2(Context context) {

super(context);

mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.jiewo);

}

@Override

protected void onDraw(Canvas canvas) {

super.onDraw(canvas);

w = this.getWidth() / 2 - mBitmap.getWidth() / 2;

h = (this.getHeight() / 2 - mBitmap.getHeight() / 2) - ( MyIcon.mBitmap.getHeight()/2);

canvas.drawBitmap(mBitmap, w, h, null);

}

}

以上所述是小编给大家分享Android百度定位导航之基于百度地图移动获取位置和自动定位的相关知识，希望对大家有所帮助。