osmdroid地图

1.简介

osmdroid是一个开源的地图填充器，全称是 open street map ，至于droid我个人认为应该是安卓版的后缀吧。

在网络上找了很多资料，大多是加载在线地图的，加载离线地图的很少，所以把代码记录一下。

2.初始化

1.在布局中添加地图控件

<org.osmdroid.views.MapViewandroid:id="@+id/map_view"android:layout_width="match_parent"android:layout_height="match_parent"/>

2.初始化地图

        MapView map_view = (MapView) findViewById(R.id.map_view);//设置地图是可点击的map_view.setClickable(true);//显示地图下方的缩放按钮map_view.setBuiltInZoomControls(true);mMapController = map_view.getController();//设置初始化缩放级别mMapController.setZoom(8);//设置当前最大缩放级别map_view.setMaxZoomLevel(8);//添加比例尺ScaleBarOverlay scaleBar = new ScaleBarOverlay(context);map_view.getOverlays().add(scaleBar);//初始化放大缩小控制器initZoomController()；//设置中心点mMapController.setCenter(new GeoPoint(34.5063810566, 122.9272579323));/*** 初始化放大缩小的处理 -- 对放大缩小方法进行监听*/private void initZoomController() {Field f = null;try {f = map_view.getClass().getDeclaredField("mZoomController");//通过反射找到缩放的控制器f.setAccessible(true);Log.d(TAG, "zoomControllerClass--" + f.getGenericType().toString());System.out.println("反射类中所有的方法");Method[] fm = Class.forName("android.widget.ZoomButtonsController").getMethods();for (int i = 0; i < fm.length; i++) {if (fm[i].getName().equals("setOnZoomListener")) {fm[i].setAccessible(true);fm[i].invoke((ZoomButtonsController) f.get(map_view), new ZoomButtonsController.OnZoomListener() {@Overridepublic void onVisibilityChanged(boolean b) {}@Overridepublic void onZoom(boolean b) {if (b) {map_view.getController().zoomIn();} else {map_view.getController().zoomOut();}zoom();//自己要处理的方法}});}System.out.println("fm:" + fm[i].getName() + "____"+ fm[i].getReturnType().getName());}} catch (NoSuchFieldException e) {e.printStackTrace();} catch (InvocationTargetException e) {e.printStackTrace();} catch (IllegalAccessException e) {e.printStackTrace();} catch (ClassNotFoundException e) {e.printStackTrace();}}

###3.对地图进行操作
####1 加载离线地图

    /*** 离线地图文件--离线地图在内存卡中的位置，如果随机可以遍历文件，不过时间可能会稍微慢一些*/public static File OSMDROID_PATH = new File("/storage/sdcard1/osmdroid");/*** 查找离线地图--在有网络的情况下会加载谷歌地图*/private void findOfflineMap() {ThreadPoolManager.getInstance().execute(new Runnable() {@Overridepublic void run() {//指定地图加载提供器registerReceiver = new SimpleRegisterReceiver(context);final TileWriter tileWriter = new TileWriter();fileSystemProvider = new MapTileFilesystemProvider(registerReceiver, null);// Create an archive file modular tile providerfileArchiveProvider = new MapTileFileArchiveProvider(registerReceiver, null, findArchiveFiles());// Create a download modular tile providerfinal NetworkAvailabliltyCheck networkAvailabliltyCheck = new NetworkAvailabliltyCheck(context);final MapTileDownloader downloaderProvider = new MapTileDownloader(null, tileWriter, networkAvailabliltyCheck);DisplayMetrics dm = getResources().getDisplayMetrics();//google卫星图float mDensity = dm.density;if (mDensity > 1.5)mDensity = 1.5f;String url1 = "http://mt1.google.cn/vt/lyrs=y&hl=zh-CN&gl=cn&scale=" + mDensity;String url2 = "http://mt2.google.cn/vt/lyrs=y&hl=zh-CN&gl=cn&scale=" + mDensity;String url3 = "http://mt3.google.cn/vt/lyrs=y&hl=zh-CN&gl=cn&scale=" + mDensity;//含路网ms_googleSatellite = new GoogleMapsTileSource("GoogleMap", null, 1, 19, (int) (256 * dm.density), ".jpg",new String[]{url1, url2, url3});// Create a custom tile provider array with the custom tile source and  the custom tile providerstileProviderArray = new MapTileProviderArray(ms_googleSatellite, registerReceiver,new MapTileModuleProviderBase[]{fileSystemProvider, fileArchiveProvider, downloaderProvider});map_view.getTileProvider().clearTileCache();
//      Log.d("tag", "清理tile缓存........");map_view.setTileProvider(tileProviderArray);map_view.setTileSource(ms_googleSatellite);map_view.setTilesScaledToDpi(false);//重要}});}

GoogleMapsTileSource.java

    public class GoogleMapsTileSource extends OnlineTileSourceBase/* implements IStyledTileSource<Integer> */{public GoogleMapsTileSource(String aName, string aResourceId,int aZoomMinLevel, int aZoomMaxLevel, int aTileSizePixels,String aImageFilenameEnding, String[] aBaseUrl) {super(aName, aZoomMinLevel, aZoomMaxLevel, aTileSizePixels,aImageFilenameEnding, aBaseUrl);}@Overridepublic String getTileURLString(MapTile aTile) {return getBaseUrl() + "&x=" + aTile.getX() + "&y=" + aTile.getY() + "&z=" + aTile.getZoomLevel(); }}

####2 向地图中添加图片

/*** 添加图片* @param point* @return*/private Overlay addImg(ArrowPoint point) {ArrayList<OverlayItem> items = new ArrayList<OverlayItem>();Drawable drawable = this.getResources().getDrawable(point.imgResource);OverlayItem item = new OverlayItem("", "", point.geoPoint);item.setMarker(drawable);items.add(item);CustomMarker marker = new CustomMarker(items,new ItemizedIconOverlay.OnItemGestureListener<OverlayItem>() {@Overridepublic boolean onItemSingleTapUp(final int index,final OverlayItem item) {return true;}@Overridepublic boolean onItemLongPress(final int index,final OverlayItem item) {return false;}}, map_view.getResourceProxy());map_view.getOverlays().add(marker);map_view.invalidate();return marker;}

####3 在地图中添加实线区域

/*** 添加实线区域*/private Overlay addFullArea(List<GeoPoint> pointList, int color) {PathOverlay myPath = new PathOverlay(color, this);Paint paint = new Paint();paint.reset();paint.setStyle(Paint.Style.STROKE);paint.setStrokeWidth(3);paint.setColor(color);
//        paint.setAntiAlias(true);paint.setPathEffect(null);myPath.setPaint(paint);for (GeoPoint geoPoint : pointList) {myPath.addPoint(geoPoint);}map_view.getOverlays().add(myPath);map_view.invalidate();return myPath;}

####4 在地图中添加虚线区域

/*** 添加虚线区域*/private Overlay addDottedArea(List<GeoPoint> pointList) {PathOverlay myPath = new PathOverlay(Color.RED, this);PathEffect effect = null;//虚线effect = getDottedLine(30, 30);Paint paint = new Paint();paint.reset();paint.setStyle(Paint.Style.STROKE);paint.setStrokeWidth(3);paint.setColor(Color.RED);
//        paint.setAntiAlias(true);paint.setPathEffect(effect);myPath.setPaint(paint);for (GeoPoint geoPoint : pointList) {myPath.addPoint(geoPoint);}map_view.getOverlays().add(myPath);return myPath;}/*** 获取虚线* @param lineLength* @param space* @return*/private PathEffect getDottedLine(int lineLength, int space) {//虚线DashPathEffect pee = new DashPathEffect(new float[]{lineLength, space}, 0);return pee;}

####5 在地图中添加T型区域

 /*** 添加T型虚线区域* 点从右向左添加时T型向内*/private Overlay addTShapeArea(List<GeoPoint> pointList) {PathOverlay myPath = new PathOverlay(Color.RED, this);PathEffect effect = null;//T型虚线effect = getTShape(15, 20);Paint paint = new Paint();paint.reset();paint.setStyle(Paint.Style.STROKE);paint.setStrokeWidth(3);paint.setColor(Color.RED);
//        paint.setAntiAlias(true);paint.setPathEffect(effect);myPath.setPaint(paint);for (GeoPoint geoPoint : pointList) {myPath.addPoint(geoPoint);}map_view.getOverlays().add(myPath);return myPath;}/*** 获取T型虚线* @param lineLength* @param space* @return*/private PathEffect getTShape(int lineLength, int space) {//T型虚线TShaped(lineLength);PathDashPathEffect pe = new PathDashPathEffect(tShaped, space, 0, PathDashPathEffect.Style.MORPH);return pe;}/*** 画T型虚线中的一个T* @param length T的长度*/private void TShaped(float length) {tShaped = new Path();float dis1 = (float) ((length / 2) / Math.tan((54f / 180) * Math.PI));tShaped.moveTo(length / 2 - length / 10, 0);tShaped.lineTo(length / 2 + length / 10, 0);tShaped.lineTo(length / 2 + length / 10, dis1);tShaped.lineTo(length, dis1);tShaped.lineTo(length, dis1 + length / 5);tShaped.lineTo(0, dis1 + length / 5);tShaped.lineTo(0, dis1);tShaped.lineTo(length / 2 - length / 10, dis1);tShaped.lineTo(length / 2 - length / 10, 0);}

T的大小都是自定义的，在最后一个方法中，当前是将大小定死了，如果需要，可以在此基础上修改。

####6 箭头的画法
再附加一个根据经纬度值和角度，画箭头的方法

private List<Overlay> tidalChartLineList;private List<GeoPoint> tidalChartPointList;/*** 箭头* @param geoPoint 中心点* @param degree 角度* @param length 长度*/private void addArrows(GeoPoint geoPoint,double degree,double length) {try {double lineX = length * Math.sin(degree * Math.PI / 180);double lineY = length * Math.cos(degree * Math.PI / 180);GeoPoint latlng2 = new GeoPoint(geoPoint.getLatitude() + lineY, geoPoint.getLongitude() + lineX);double tempLine = length * 3 / 4 * Math.cos(15 * Math.PI / 180);GeoPoint latlng3 = new GeoPoint(geoPoint.getLatitude() + (tempLine * Math.sin((90 - degree + 15) * Math.PI / 180)),geoPoint.getLongitude() + (tempLine * Math.cos((90 - degree + 15) * Math.PI / 180)));GeoPoint latlng4 = new GeoPoint(geoPoint.getLatitude() + (tempLine * Math.sin((90 - degree - 15) * Math.PI / 180)),geoPoint.getLongitude() + (tempLine * Math.cos((90 - degree - 15) * Math.PI / 180)));List<GeoPoint> latLngPolygon = new ArrayList<GeoPoint>();latLngPolygon.add(geoPoint);latLngPolygon.add(latlng2);latLngPolygon.add(latlng3);latLngPolygon.add(latlng2);latLngPolygon.add(latlng4);tidalChartPointList.add(geoPoint);tidalChartLineList.add(addFullArea(latLngPolygon, 0xFFFF0000));} catch (Exception e) {e.printStackTrace();}}

7 添加自定义布局

View view = LayoutInflater.from(context).inflate(R.layout.view, null, false);
Bitmap bitmap = Bitmap.createBitmap(view.geth, 150,Bitmap.Config.ARGB_8888);
//利用bitmap生成画布
Canvas canvas = new Canvas(bitmap);
//把view中的内容绘制在画布上
view.draw(canvas);
Drawable drawable = ImageUtils.bitmapToDrawable(bitmap);
OverlayItem item = new OverlayItem("", "", point);
item.setMarker(drawable);
CustomMarker trafficMarker = new CustomMarker(items,listener,map_view.getResourceProxy());

demo地址：https://download.csdn.net/download/a569503963/10941384

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7 添加自定义布局

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