高德地图自定义服务器瓦片
项目之前用的天地图，现要求替换成自己服务器的地图瓦片！1.添加瓦片API
官网和网上很多使用瓦片的教程
private void useOMCMap() {
final String url = "http://tile.opencyclemap.org/cycle/%d/%d/%d.png";
TileOverlayOptions tileOverlayOptions = new TileOverlayOptions().tileProvider(new UrlTileProvider(256, 256) {
@Override
public URL getTileUrl(int x, int y, int zoom) {
try {
return new URL(String.format(url, zoom, x, y));
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
});
tileOverlayOptions.diskCacheEnabled(true)
.diskCacheDir("/storage/emulated/0/amap/OMCcache")
.diskCacheSize(100000)
.memoryCacheEnabled(true)
.memCacheSize(100000)
.zIndex(-9999);
mtileOverlay = aMap.addTileOverlay(tileOverlayOptions);
}} 此中URL为在线瓦片所在，具体所在可以查看 天地图API
但我们的需求是使用自己后台提供的URL 大概涉及用户授权获取其他
2.获取服务器自定义瓦片数据
通过网络请求获取瓦片数据 这里使用okhttp
public synchronized void getImageStream(String url, Callback callback) throws Exception {
HttpRequestManager.Header[] headers = getHeaders();
OkHttpClient okhttpclient = HttpRequestManager.manager().getOkClient();
FormBody formBody = new FormBody.Builder().build();
Headers head = HttpRequestManager.manager().getDefaultHeaders(null, headers);
Request request1 = new Request.Builder()
.url(url)
.post(formBody)
.headers(head)
.build();
Call call = okhttpclient.newCall(request1);
call.enqueue(callback);
} 3.将瓦片数据保存到本地
getImageStream(real_url, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.e("AnbUrlTileProvider", "获取瓦片fail");
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.e("AnbUrlTileProvider", "获取瓦片成功 ==== " + response.toString());
if (response.code() == 200 && response.body() != null) {
InputStream in = response.body().byteStream();
try {
//保存瓦片图片数据到本地
saveFile(getImageBitmap(in), mFileName, mFileDirName);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}
); 4.返回本地瓦片所在
完整代码如下：
public class AnbUrlTileProvider extends UrlTileProvider { private final String url = Constants.URL_MAP_TITLE_PROVIDER;//agrcontent/dmz/map/getMap/{z}/{x}/{y} private final String ALBUM_PATH; public AnbUrlTileProvider(Context context) { super(256, 256); ALBUM_PATH = context.getExternalFilesDir(Environment.DIRECTORY_PICTURES).getPath() + "/Cache/"; } @Override public URL getTileUrl(int x, int y, int zoom) { String mFileDirName = String.format("L%02d/", zoom + 1) + "title/"; String mFileName = String.format("%s", TileXYToQuadKey(x, y, zoom));//为了不在手机的图片中显示,取消jpg后缀,文件名自己定义,写入和读取同等即可,由于有自己的bingmap图源服务,所以此处我用的bingmap的文件名 String LJ = ALBUM_PATH + mFileDirName + mFileName; Log.e("名称是否存在: ", mFileName + "getTileUrl: " + (MapImageCache.getInstance().isBitmapExit(mFileName, ALBUM_PATH + mFileDirName)) + ""); if (MapImageCache.getInstance().isBitmapExit(mFileName, ALBUM_PATH + mFileDirName)) {//判断本地是否有图片文件,如果有返回本地url,如果没有,缓存到本地并返回googleurl try { return new URL("file://" + LJ); } catch (MalformedURLException e) { throw new RuntimeException(e); } } else { String real_url = String.format(url, zoom, x, y); try { //获取服务器 图片二进制数据流 getImageStream(real_url, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
Log.e("AnbUrlTileProvider", "获取瓦片fail");
}
@Override
public void onResponse(Call call, Response response) throws IOException {
Log.e("AnbUrlTileProvider", "获取瓦片成功 ==== " + response.toString());
if (response.code() == 200 && response.body() != null) {
InputStream in = response.body().byteStream();
try {
//保存瓦片图片数据到本地
saveFile(getImageBitmap(in), mFileName, mFileDirName);
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}
); return new URL("file://" + LJ);//返回本地瓦片图片路径 } catch (Exception e) { throw new RuntimeException(e); } } } /** * 瓦片数据坐标转换 */ private String TileXYToQuadKey(int tileX, int tileY, int levelOfDetail) { StringBuilder quadKey = new StringBuilder(); for (int i = levelOfDetail; i > 0; i--) { char digit = '0'; int mask = 1 << (i - 1); if ((tileX & mask) != 0) { digit++; } if ((tileY & mask) != 0) { digit++; digit++; } quadKey.append(digit); } return quadKey.toString(); } /** * 保存文件 */ public void saveFile(final Bitmap bm, final String fileName, final String fileDirName) throws IOException { new Thread(new Runnable() { @Override public void run() { try { if (bm != null) { File dirFile = new File(ALBUM_PATH + fileDirName); if (!dirFile.exists()) { dirFile.mkdirs(); Log.e("创建文件夹", (dirFile.exists()) + ""); } File myCaptureFile = new File(ALBUM_PATH + fileDirName + fileName); Log.e("保存路径", myCaptureFile.getPath()); BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(myCaptureFile)); bm.compress(Bitmap.CompressFormat.PNG, 80, bos); try { bos.flush(); } catch (IOException e) { throw new RuntimeException(e); } bos.close(); } } catch (IOException e) { e.printStackTrace(); } } }).start(); } public Bitmap getImageBitmap(InputStream imputStream) { // 将所有InputStream写到byte数组当中 byte[] targetData = null; if (imputStream != null) { byte[] bytePart = new byte; while (true) { try { int readLength = imputStream.read(bytePart); if (readLength == -1) { break; } else { byte[] temp = new byte; if (targetData != null) { System.arraycopy(targetData, 0, temp, 0, targetData.length); System.arraycopy(bytePart, 0, temp, targetData.length, readLength); } else { System.arraycopy(bytePart, 0, temp, 0, readLength); } targetData = temp; } } catch (Exception e) { e.printStackTrace(); } } } // 指使Bitmap通过byte数组获取数据 return BitmapFactory.decodeByteArray(targetData, 0, targetData.length); } public synchronized void getImageStream(String url, Callback callback) throws Exception {
HttpRequestManager.Header[] headers = getHeaders();
OkHttpClient okhttpclient = HttpRequestManager.manager().getOkClient();
FormBody formBody = new FormBody.Builder().build();
Headers head = HttpRequestManager.manager().getDefaultHeaders(null, headers);
Request request1 = new Request.Builder()
.url(url)
.post(formBody)
.headers(head)
.build();
Call call = okhttpclient.newCall(request1);
call.enqueue(callback);
} private HttpRequestManager.Header[] getHeaders() { return new HttpRequestManager.Header[]{new HttpRequestManager.Header() { public String getName() { return "Content-Type"; } public String getValue() { return "image/webp"; } }, new HttpRequestManager.Header() { public String getName() { return HttpRequestManager.SPARTA_ID; } public String getValue() { return DeviceInfoUtil.getDeviceNo(MainApplication.getInstance()); } }}; }} 使用瓦片后，会涉及地图坐标转换问题 参考Android中GPS坐标转换为高德地图坐标详解_Android_脚本之家
定位小蓝点坐标会出现漂移
可以通过marker自定义定位图标 在定位后刷新
参考文章：Android 高德地图 添加 天地图 卫星瓦片图片 离线缓存_天地图 离线缓存-CSDN博客
免责声明：如果侵犯了您的权益，请联系站长，我们会及时删除侵权内容，谢谢合作！更多信息从访问主页：qidao123.com:ToB企服之家，中国第一个企服评测及商务社交产业平台。
页:
[1]