Android百度地圖之云檢索功能
下面介紹百度Demo提供的最后一個功能：云檢索功能。該示例主要為海量位置數據的存儲、檢索、展示提供了一種解決方案。里面用的是測試的ak，如果開發者要使用自己的數據，則需要使用自己申請的ak。代碼如下：
云檢索功能介紹類（CloudSearchDemo）：
package com.home;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class CloudSearchDemo extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_cloud_search_demo);
}
public void startCloudSearchDemo(View view) {
Intent intent = new Intent();
intent.setClass(this, CloudSearchActivity.class);
startActivity(intent);
}
}
CloudSearchDemo對應的布局XML：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/white" >
<TextView
android:id="@+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="36dp"
android:text="@string/cloud_search_tips"
android:textColor="@android:color/black"
android:textSize="16sp" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/textView1"
android:layout_centerHorizontal="true"
android:layout_marginTop="32dp"
android:onClick="startCloudSearchDemo"
android:text="開始體驗" />
</RelativeLayout> string/cloud_search_tips：
<string name="cloud_search_tips"> \t\tLBS.云是百度地圖針對LBS開發者推出的平臺級服務。結合已有的地圖API和SDK服務。通過開放服務端存儲和計算能力,提供海量位置數據存儲、檢索、展示一體化解決方案。\n\n
\t\t該服務對開發者免費開放。測試demo里寫入了測試的ak。開發者可以使用測試ak查看 LBS.云檢索的效果。如果開發者要使用自己的數據，請在申請ak后替換demo中的ak。\n\n
\t\t如有任何關于LBS.云服務的問題,諸如如何申請ak、如何存儲和檢索數據等，請訪問百度地圖官方“LBS開放平臺”。地址：http://lbsyun.baidu.com/ \n
</string>
云檢索主Activity：
package com.home;
import java.util.List;
import android.app.Activity;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
import com.baidu.mapapi.BMapManager;
import com.baidu.mapapi.cloud.Bounds;
import com.baidu.mapapi.cloud.BoundsSearchInfo;
import com.baidu.mapapi.cloud.CustomPoiInfo;
import com.baidu.mapapi.cloud.DetailResult;
import com.baidu.mapapi.cloud.DetailSearchInfo;
import com.baidu.mapapi.cloud.GeoSearchListener;
import com.baidu.mapapi.cloud.GeoSearchManager;
import com.baidu.mapapi.cloud.GeoSearchResult;
import com.baidu.mapapi.cloud.NearbySearchInfo;
import com.baidu.mapapi.cloud.RegionSearchInfo;
import com.baidu.mapapi.map.ItemizedOverlay;
import com.baidu.mapapi.map.MapView;
import com.baidu.mapapi.map.OverlayItem;
import com.baidu.platform.comapi.basestruct.GeoPoint;
public class CloudSearchActivity extends Activity implements GeoSearchListener {
private MapView mMapView;
@Override
protected void onCreate(Bundle icicle) {
super.onCreate(icicle);
DemoApplication app = (DemoApplication) this.getApplication();
if (app.mBMapManager == null) {
app.mBMapManager = new BMapManager(this);
app.mBMapManager.init(DemoApplication.strKey,
new DemoApplication.MyGeneralListener());
}
setContentView(R.layout.lbs_search);
GeoSearchManager.getInstance().init(CloudSearchActivity.this);
mMapView = (MapView) findViewById(R.id.bmapView);
mMapView.getController().enableClick(true);
mMapView.getController().setZoom(12);
mMapView.setDoubleClickZooming(true);
}
@Override
public void onGetGeoDetailsResult(DetailResult result, int type, int iError) {
if (result != null) {
if (result.content != null) {
Toast.makeText(CloudSearchActivity.this, result.content.name,
Toast.LENGTH_SHORT).show();
} else {
Toast.makeText(CloudSearchActivity.this,
"status:" + result.status, Toast.LENGTH_SHORT).show();
}
}
}
@Override
public void onGetGeoResult(GeoSearchResult result, int type, int iError) {
if (result != null && result.poiList != null
&& result.poiList.size() > 0) {
CloudOverlay poiOverlay = new CloudOverlay(this, mMapView);
poiOverlay.setData(result.poiList);
mMapView.getOverlays().clear();
mMapView.getOverlays().add(poiOverlay);
mMapView.refresh();
mMapView.getController().animateTo(
new GeoPoint((int) (result.poiList.get(0).latitude * 1e6),
(int) (result.poiList.get(0).longitude * 1e6)));
}
}
@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);
}
@Override
protected void onDestroy() {
mMapView.destroy();
super.onDestroy();
}
public void click(View v) {
if (v.getId() == R.id.regionSearch) {
RegionSearchInfo r = new RegionSearchInfo();
r.queryWords = "北京市五中";
r.ak = "3307f6443b2bdcae21af5d9564b5a88c";
r.cityName = "北京";
r.filter.put("databox", 848);
r.scope = 2;
GeoSearchManager.getInstance().searchRegion(r);
}
if (v.getId() == R.id.nearbySearch) {
NearbySearchInfo r = new NearbySearchInfo();
r.queryWords = "北京";
r.ak = "3307f6443b2bdcae21af5d9564b5a88c";
r.location = new GeoPoint(39956948, 116412214);
r.radius = 10000000;
r.filter.put("databox", 848);
r.scope = 2;
GeoSearchManager.getInstance().searchNearby(r);
}
if (v.getId() == R.id.boundsSearch) {
BoundsSearchInfo r = new BoundsSearchInfo();
r.queryWords = "五中";
r.ak = "3307f6443b2bdcae21af5d9564b5a88c";
r.bounds = new Bounds(39843895, 116402214, 40956948, 116431457);
r.filter.put("databox", 848);
r.scope = 2;
GeoSearchManager.getInstance().searchBounds(r);
}
if (v.getId() == R.id.detailsSearch) {
DetailSearchInfo r = new DetailSearchInfo();
r.id = 81217;
r.ak = "3307f6443b2bdcae21af5d9564b5a88c";
r.scope = 2;
GeoSearchManager.getInstance().searchDetail(r);
}
}
}
class CloudOverlay extends ItemizedOverlay {
List<CustomPoiInfo> mLbsPoints;
Activity mContext;
public CloudOverlay(Activity context, MapView mMapView) {
super(null, mMapView);
mContext = context;
}
public void setData(List<CustomPoiInfo> lbsPoints) {
if (lbsPoints != null) {
mLbsPoints = lbsPoints;
}
for (CustomPoiInfo rec : mLbsPoints) {
GeoPoint pt = new GeoPoint((int) (rec.latitude * 1e6),
(int) (rec.longitude * 1e6));
OverlayItem item = new OverlayItem(pt, rec.name, rec.address);
Drawable marker1 = this.mContext.getResources().getDrawable(
R.drawable.icon_marka);
item.setMarker(marker1);
addItem(item);
}
}
@Override
protected Object clone() throws CloneNotSupportedException {
return super.clone();
}
@Override
protected boolean onTap(int arg0) {
CustomPoiInfo item = mLbsPoints.get(arg0);
Toast.makeText(mContext, item.name, Toast.LENGTH_SHORT).show();
return super.onTap(arg0);
}
} 其布局文件：
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<Button
android:id="@+id/regionSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click"
android:text="本地搜索" />
<Button
android:id="@+id/nearbySearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click"
android:text="周邊搜索" />
<Button
android:id="@+id/boundsSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click"
android:text="區域搜索" />
<Button
android:id="@+id/detailsSearch"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="click"
android:text="詳情搜索" />
</LinearLayout>
<com.baidu.mapapi.map.MapView
android:id="@+id/bmapView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:clickable="true" />
</LinearLayout> 配置文件和Application類與之前的一樣。
附上圖片效果：
來自：http://blog.csdn.net/u010142437/article/details/11664781
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