android手机地图源码

package com.baidu.mapapi.demo; import java.util.ArrayList; import java.util.List; import android.content.Context; 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.Toast; import com.baidu.mapapi.*; public class ItemizedOverlayDemo extends MapActivity { static View mPopView = null; // 点击mark时弹出的气泡View static MapView mMapView = null; int iZoom = 0; OverItemT overitem = null; protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.mapviewdemo); 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)(39.90923*1e6), (int)(116.397428*1e6)); mMapView.getController().setCenter(point); // 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 overitem = new OverItemT(marker, this, 3); mMapView.getOverlays().add(overitem); //添加ItemizedOverlay实例到mMapView // 创建点击mark时的弹出泡泡 mPopView=super.getLayoutInflater().inflate(R.layout.popview, null); mMapView.addView( mPopView, new MapView.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, null, MapView.LayoutParams.TOP_LEFT)); mPopView.setVisibility(View.GONE); iZoom = mMapView.getZoomLevel(); // mMapView.regMapViewListener(app.mBMapMan, new MKMapViewListener(){ // public void onMapMoveFinish() { // if(iZoom != mMapView.getZoomLevel()) // {// 比例尺不一样 // iZoom = mMapView.getZoomLevel(); // if(overitem.mGeoList.size() > 0) // overitem.mGeoList.remove(0); // //overitem.updateOverlay(); //// 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, ItemizedOverlayDemo.this, 3)); // } // } // }); } @Override protected void onPause() { BMapApiDemoApp app = (BMapApiDemoApp)this.getApplication(); if(app.mBMapMan != null) 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; } } class OverItemT extends ItemizedOverlay<OverlayItem> { public List<OverlayItem> mGeoList = new ArrayList<OverlayItem>(); private Drawable marker; private Context mContext; private double mLat1 = 39.90923; // point1纬度 private double mLon1 = 116.357428; // point1经度 private double mLat2 = 39.90923; private double mLon2 = 116.397428; private double mLat3 = 39.90923; private double mLon3 = 116.437428; public OverItemT(Drawable marker, Context context, int count) { super(boundCenterBottom(marker)); this.marker = marker; this.mContext = 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)); GeoPoint p2 = new GeoPoint((int) (mLat2 * 1E6), (int) (mLon2 * 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, "P1", "point1")); mGeoList.add(new OverlayItem(p2, "P2", "point2")); if(count == 3) { GeoPoint p3 = new GeoPoint((int) (mLat3 * 1E6), (int) (mLon3 * 1E6)); mGeoList.add(new OverlayItem(p3, "P3", "point3")); } 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 } public void updateOverlay() { populate(); } @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(); } @Override // 处理当点击事件 protected boolean onTap(int i) { setFocus(mGeoList.get(i)); // 更新气泡位置,并使之显示 GeoPoint pt = mGeoList.get(i).getPoint(); ItemizedOverlayDemo.mMapView.updateViewLayout( ItemizedOverlayDemo.mPopView, new MapView.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, pt, MapView.LayoutParams.BOTTOM_CENTER)); ItemizedOverlayDemo.mPopView.setVisibility(View.VISIBLE); Toast.makeText(this.mContext, mGeoList.get(i).getSnippet(), Toast.LENGTH_SHORT).show(); return true; } @Override public boolean onTap(GeoPoint arg0, MapView arg1) { // TODO Auto-generated method stub // 消去弹出的气泡 ItemizedOverlayDemo.mPopView.setVisibility(View.GONE); return super.onTap(arg0, arg1); } }