ANDROID_MARS学习笔记_S03_009_GOOGLEMAP3

             1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical"
 4     android:layout_width="fill_parent"
 5     android:layout_height="fill_parent"
 6     >
 7 <com.google.android.maps.MapView
 8         android:id="@+id/mapViewId"
 9         android:layout_width="fill_parent"
10         android:layout_height="fill_parent"
11         android:enabled="true"
12         android:clickable="true"
13         android:apiKey="0pkT0EYxPi2VZ5beDaJ0g08aCtWGmKTFnOvj6iw"
14         />
15 </LinearLayout>

             1 <?xml version="1.0" encoding="utf-8"?>
 2 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
 3package="com.se7en"
 4       android:versionCode="1"
 5       android:versionName="1.0">
 6     <uses-sdk android:minSdkVersion="8" />
 7 8     <application android:icon="@drawable/icon" android:label="@string/app_name">
 9         <uses-library android:name="com.google.android.maps" />
10         <activity android:name=".MainActivity"
11                   android:label="@string/app_name">
12             <intent-filter>
13                 <action android:name="android.intent.action.MAIN" />
14                 <category android:name="android.intent.category.LAUNCHER" />
15             </intent-filter>
16         </activity>
17     </application>
18     <uses-permission android:name="android.permission.INTERNET" />
19 </manifest>

              1
            package
             com.se7en;

              2
              3
            import
             java.util.List;

              4
              5
            import
             android.graphics.Bitmap;

              6
            import
             android.graphics.BitmapFactory;

              7
            import
             android.graphics.Canvas;

              8
            import
             android.graphics.Color;

              9
            import
             android.graphics.Paint;

             10
            import
             android.graphics.Path;

             11
            import
             android.graphics.Point;

             12
            import
             android.os.Bundle;

             13
             14
            import
             com.google.android.maps.GeoPoint;

             15
            import
             com.google.android.maps.MapActivity;

             16
            import
             com.google.android.maps.MapController;

             17
            import
             com.google.android.maps.MapView;

             18
            import
             com.google.android.maps.Overlay;

             19
            import
             com.google.android.maps.Projection;

             20
             21
            public
            class MainActivity extends MapActivity {
 22private Projection projection;
 23private List<Overlay> overlays;
 24private MapController mapController;
 25private GeoPoint beginGeoPoint;
 26private GeoPoint endGeoPoint;
 27 28/** Called when the activity is first created. */ 29    @Override
 30publicvoid onCreate(Bundle savedInstanceState) {
 31super.onCreate(savedInstanceState);
 32        setContentView(R.layout.main);
 33 34         beginGeoPoint = new GeoPoint(19240000,-99120000);
 35         endGeoPoint = new GeoPoint(19340000,-99220000);
 36 37         MapView mapView = (MapView)findViewById(R.id.mapViewId);
 38         mapView.setBuiltInZoomControls(true);
 39 40//mapController主要用于对地图进行控制 41         mapController = mapView.getController();
 42         overlays = mapView.getOverlays();
 43         projection = mapView.getProjection();
 44 45         overlays.add(new PointOverlay(beginGeoPoint));
 46         overlays.add(new PointOverlay(endGeoPoint));
 47         overlays.add(new LineOverlay(beginGeoPoint,endGeoPoint));
 48 49//将地图以动画的形式移动到指定的点 50        mapController.animateTo(beginGeoPoint);
 51//设置地图的放大级别 52         mapController.setZoom(12);
 53    }
 54 55    @Override
 56protectedboolean isRouteDisplayed() {
 57// TODO Auto-generated method stub 58returnfalse;
 59    }
 60 61//图标层 62class PointOverlay extends Overlay{
 63private GeoPoint geoPoint;
 64public PointOverlay(){
 65 66        }
 67public PointOverlay(GeoPoint geoPoint){
 68this.geoPoint = geoPoint;
 69        }
 70publicvoid draw(Canvas canvas,MapView mapView,boolean shadow){
 71super.draw(canvas, mapView, shadow);
 72             Point point = new Point();
 73//将geoPoint转换为屏幕上的X、Y轴坐标 74            projection.toPixels(geoPoint, point);
 75//位图 76             Bitmap bmp = BitmapFactory.decodeResource(getResources(),R.drawable.tool);
 77             Paint paint = new Paint();//画笔
 78//Y轴-30是为了调整图片的显示位置(默认是讲图片的左上角对应到经纬度点) 79             canvas.drawBitmap(bmp,point.x,point.y-30,paint);
 80        }
 81    }
 82 83//路线层 84class LineOverlay extends Overlay{
 85private GeoPoint begin;
 86private GeoPoint end;
 87 88public LineOverlay(){}
 89public LineOverlay(GeoPoint begin,GeoPoint end){
 90this.begin = begin;
 91this.end = end;
 92        }
 93 94publicvoid draw(Canvas canvas,MapView mapView,boolean shadow){
 95super.draw(canvas, mapView, shadow);
 96             Paint paint = new Paint();
 97            paint.setColor(Color.BLUE);
 98//设置线条的样式（填满的空心线） 99            paint.setStyle(Paint.Style.FILL_AND_STROKE);
100             paint.setStrokeWidth(2);
101             Point beginPoint = new Point();
102             Point endPoint = new Point();
103             Path path = new Path();
104            projection.toPixels(begin,beginPoint);
105            projection.toPixels(end,endPoint);
106//指定划线的起始点107            path.moveTo(beginPoint.x,beginPoint.y);
108//指定划线的终点109            path.lineTo(endPoint.x,endPoint.y);
110            canvas.drawPath(path,paint);
111        }
112    }
113114 }