地图&导航&定位&指南 调用GoogleMap源码，点击事件在注释里面(程序源码).rar

package com.zhangle.gmt; import java.util.List; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; import com.google.android.maps.Overlay; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.Canvas; import android.graphics.Paint; import android.graphics.Point; import android.os.Bundle; import android.view.View; import android.widget.Button; import android.widget.EditText; import android.widget.RadioGroup; import android.widget.Toast; import android.widget.RadioGroup.OnCheckedChangeListener; // 必须继承MapActivity public class GoogleMapTestActivity extends MapActivity { // 定义界面上的的可视化控件 Button locBn; RadioGroup mapType; MapView mv; EditText etLng , etLat; // 定义MapController对象 MapController controller; Bitmap posBitmap; //构造方法（纬度，经度）乘以10的六次方 GeoPoint geoPoint=new GeoPoint((int)(31.38*1E6),(int)(117.5*1000000)); private String text="安徽"; @Override protected void onCreate(Bundle status) { super.onCreate(status); setContentView(R.layout.main); // 获得界面上MapView对象 mv = (MapView) findViewById(R.id.mv); mv.setTraffic(true);//交通模式 mv.setSatellite(true);//卫星模式 mv.setStreetView(true);//街道模式 /*mv.setEnabled(true); 这两个事件可以在配置文件中设置 mv.setClickable(true);*/ // 设置显示放大、缩小的控制按钮 mv.setBuiltInZoomControls(true); // 创建MapController对象 controller = mv.getController(); //controller.setCenter(geoPoint);设置中 controller.animateTo(geoPoint);//移动到某个点 controller.setZoom(12);//设置缩放尺寸1-21 //定义提示层 LocationOverlay lOverlay=new LocationOverlay(); //在mapview增加显示层 List<Overlay> overlays=mv.getOverlays(); overlays.add(lOverlay); /*posBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.pos); // 获取界面上两个文本框 etLng = (EditText) findViewById(R.id.lng); etLat = (EditText) findViewById(R.id.lat); // 获得Button对象 locBn = (Button) findViewById(R.id.loc); locBn.setOnClickListener(new View.OnClickListener() { public void onClick(View source) { // 获取用户输入的经度、纬度值 String lng = etLng.getEditableText().toString().trim(); String lat = etLat.getEditableText().toString().trim(); if (lng.equals("") || lat.equals("")) { Toast.makeText(GoogleMapTestActivity.this, "请输入有效的经度、纬度!", Toast.LENGTH_LONG).show(); } else { double dLong = Double.parseDouble(lng); double dLat = Double.parseDouble(lat); // 调用方法更新MapView updateMapView(dLong , dLat); } } }); // 触发按钮的单击事件 locBn.performClick(); // 获得RadioGroup对象 mapType = (RadioGroup) findViewById(R.id.rg); // 为RadioGroup的选中状态改变添加监听器 mapType.setOnCheckedChangeListener(new OnCheckedChangeListener() { public void onCheckedChanged(RadioGroup group, int checkedId) { switch(checkedId) { case R.id.normal: mv.setSatellite(false); break; case R.id.satellite: mv.setSatellite(true); break; } } });*/ } @Override protected boolean isRouteDisplayed() { return true; } public class LocationOverlay extends Overlay { @Override public void draw(Canvas canvas, MapView mapView, boolean shadow) { //坐标转换，把经纬度转换成屏幕坐标 Point point=new Point(); mv.getProjection().toPixels(geoPoint, point); /** * 绘制 */ Paint paint=new Paint(); paint.setARGB(255,255, 0, 0); paint.setStrokeWidth(1);//设置画笔宽带 paint.setARGB(255,255, 0, 0); paint.setStyle(Paint.Style.STROKE); //绘制矩形,知道左上和右下坐标即可 canvas.drawRect(point.x, point.y, point.x+20, point.y+10, paint); //提示文本 canvas.drawText(text, point.x, point.y+10, paint); //绘制图片 Bitmap bitmap=BitmapFactory.decodeResource(getResources(), R.drawable.pos); canvas.drawBitmap(bitmap, point.x,point.y, paint); } } private void updateMapView(double lng, double lat) { GeoPoint gp = new GeoPoint((int) (lat * 1E6) , (int) (lng * 1E6)); mv.displayZoomControls(true); controller.animateTo(gp); List<Overlay> ol = mv.getOverlays(); ol.clear(); ol.add(new PosOverLay(gp, posBitmap)); } }