android百度舆图点击弹出信息框

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ItemizedOverlay		Drawable 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mMapView		initPopview();	}	@Override	protected void onPause() {		BMapApiDemoApp app = (BMapApiDemoApp)this.getApplication();		app.mBMapMan.stop();		super.onPause();	}	@Override	protected void onResume() {		BMapApiDemoApp app = (BMapApiDemoApp)this.getApplication();		app.mBMapMan.start();		super.onResume();	}	@Override	protected boolean isRouteDisplayed() {		// TODO Auto-generated method stub		return 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	}	@Override	public 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mGeoList			OverlayItem overLayItem = getItem(index); // 得到给定索引的item			String 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);	}	@Override	protected OverlayItem createItem(int i) {		// TODO Auto-generated method stub		return mGeoList.get(i);	}	@Override	public int size() {		// TODO Auto-generated method stub		return 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;	}	@Override	public boolean onTap(GeoPoint arg0, MapView arg1) {		// TODO Auto-generated method stub		return super.onTap(arg0, arg1);	}}