android百度地图点击弹出信息框
如图：
我是在百度的demo上改的主要代码：
package com.baidu.mapapi.demo;import java.util.ArrayList;import java.util.List;import android.content.Context;import android.content.Intent;import android.graphics.Canvas;import android.graphics.Color;import android.graphics.Paint;import android.graphics.Point;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.widget.ImageView;import android.widget.TextView;import android.widget.Toast;import com.baidu.mapapi.BMapManager;import com.baidu.mapapi.GeoPoint;import com.baidu.mapapi.ItemizedOverlay;import com.baidu.mapapi.MapActivity;import com.baidu.mapapi.MapView;import com.baidu.mapapi.OverlayItem;import com.baidu.mapapi.Projection;public class ItemizedOverlayDemo extends MapActivity {static MapView mMapView = null;public View popView;private double mLat1 = 31.257277; // point1纬度private double mLon1 = 121.501347; // point1经度public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.mapviewdemo);String temp = "测试信息";BMapApiDemoApp app = (BMapApiDemoApp)this.getApplication();if (app.mBMapMan == null) {app.mBMapMan = new BMapManager(getApplication());app.mBMapMan.init(app.mStrKey, new BMapApiDemoApp.MyGeneralListener());}app.mBMapMan.start(); // 如果使用地图SDK，请初始化地图Activity super.initMapActivity(app.mBMapMan); mMapView = (MapView)findViewById(R.id.bmapView); mMapView.setBuiltInZoomControls(true); //设置在缩放动画过程中也显示overlay,默认为不绘制 mMapView.setDrawOverlayWhenZooming(true); GeoPoint point =new GeoPoint((int)(mLat1*1e6), (int)(mLon1*1e6)); mMapView.getController().setCenter(point); mMapView.getController().setZoom(17); // 添加ItemizedOverlayDrawable marker = getResources().getDrawable(R.drawable.iconmarka); //得到需要标在地图上的资源marker.setBounds(0, 0, marker.getIntrinsicWidth(), marker.getIntrinsicHeight()); //为maker定义位置和边界mMapView.getOverlays().add(new OverItemT(marker, this,mLat1,mLon1,temp)); //添加ItemizedOverlay实例到mMapViewinitPopview();}@Overrideprotected void onPause() {BMapApiDemoApp app = (BMapApiDemoApp)this.getApplication();app.mBMapMan.stop();super.onPause();}@Overrideprotected void onResume() {BMapApiDemoApp app = (BMapApiDemoApp)this.getApplication();app.mBMapMan.start();super.onResume();}@Overrideprotected boolean isRouteDisplayed() {// TODO Auto-generated method stubreturn false;}private void initPopview(){ popView = super.getLayoutInflater().inflate(R.layout.popview, null); mMapView.addView( popView, new MapView.LayoutParams(MapView.LayoutParams.WRAP_CONTENT, MapView.LayoutParams.WRAP_CONTENT, null, MapView.LayoutParams.TOP_LEFT)); //由于气泡的尾巴是在下边居中的,因此要设置成MapView.LayoutParams.BOTTOM_CENTER. //这里没有给GeoPoint,在onFocusChangeListener中设置// views.add(popView); popView.setVisibility(View.GONE); }}class OverItemT extends ItemizedOverlay<OverlayItem> {private List<OverlayItem> mGeoList = new ArrayList<OverlayItem>();private Drawable marker;private ItemizedOverlayDemo mContext;private TextView textView1;private TextView textView2;public OverItemT(Drawable marker, Context context, double mLat1,double mLon1,String mer_name) {super(boundCenterBottom(marker));this.marker = marker;this.mContext = (ItemizedOverlayDemo)context;// 用给定的经纬度构造GeoPoint，单位是微度 (度 * 1E6)GeoPoint p1 = new GeoPoint((int) (mLat1 * 1E6), (int) (mLon1 * 1E6));// 构造OverlayItem的三个参数依次为：item的位置，标题文本，文字片段mGeoList.add(new OverlayItem(p1, "", mer_name));populate(); //createItem(int)方法构造item。一旦有了数据，在调用其它方法前，首先调用这个方法}@Overridepublic void draw(Canvas canvas, MapView mapView, boolean shadow) {// Projection接口用于屏幕像素坐标和经纬度坐标之间的变换Projection projection = mapView.getProjection(); for (int index = size() - 1; index >= 0; index--) { // 遍历mGeoListOverlayItem overLayItem = getItem(index); // 得到给定索引的itemString title = overLayItem.getTitle();// 把经纬度变换到相对于MapView左上角的屏幕像素坐标Point point = projection.toPixels(overLayItem.getPoint(), null); // 可在此处添加您的绘制代码Paint paintText = new Paint();paintText.setColor(Color.BLUE);paintText.setTextSize(15);canvas.drawText(title, point.x-30, point.y, paintText); // 绘制文本}super.draw(canvas, mapView, shadow);//调整一个drawable边界，使得（0，0）是这个drawable底部最后一行中心的一个像素boundCenterBottom(marker);}@Overrideprotected OverlayItem createItem(int i) {// TODO Auto-generated method stubreturn mGeoList.get(i);}@Overridepublic int size() {// TODO Auto-generated method stubreturn mGeoList.size();}// 处理当点击事件protected boolean onTap(int i) {setFocus(mGeoList.get(i));MapView.LayoutParams geoLP = (MapView.LayoutParams) mContext.popView.getLayoutParams();GeoPoint pt = mGeoList.get(i).getPoint();mContext.mMapView.updateViewLayout(mContext.popView,new MapView.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, pt, MapView.LayoutParams.BOTTOM_CENTER));mContext.popView.setVisibility(View.VISIBLE);textView1 = (TextView) mContext.findViewById(R.id.map_bubbleTitle);textView2 = (TextView) mContext.findViewById(R.id.map_bubbleText);textView1.setText("提示信息");textView2.setText(mGeoList.get(i).getSnippet());ImageView imageView = (ImageView) mContext.findViewById(R.id.map_bubbleImage);imageView.setOnClickListener(new View.OnClickListener(){public void onClick(View v) {mContext.popView.setVisibility(View.GONE);}});return true;}@Overridepublic boolean onTap(GeoPoint arg0, MapView arg1) {// TODO Auto-generated method stubreturn super.onTap(arg0, arg1);}}