在Android中使用mapsforge的离线地图 [英] Offline map using mapsforge in android

问题描述

如何在Android中实现离线地图。我用mapsforge库试了一下。
它不提供威斯康星州的二进制地图文件。那么如何创建我自己的地图二进制文件？

提前感谢

解决方案>

您将需要两件事：

1. 允许您使用mapsforge库的程序。关于这一点，您可以坚持使用名为AdvancedMapViewer的程序作为示例与库。




2. 一个mapfile。勉强你必须从OpenStreetMap数据创建你自己的mapfile。这是通过一个用于渗透的插件来完成的。这个插件在这里描述：

https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Map-Writer.md

总之，它的工作原理如下：

• 安装渗透（ http://wiki.openstreetmap.org/wiki/Osmosis ）


• 安装插件（ https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Map-Writer.md ）


• 下载数据（例如，从geofabrik .de： http://download.geofabrik.de/north -america / us / wisconsin-latest.osm.pbf ）



• 运行渗透任务，从而在shell上运行（在PATH中使用渗透）：

  
  
  

  osmosis --read-pbf wisconsin-latest.osm.pbf - -mapfile-writer file = wisconsin.map

然后将创建的文件wisconsin.map放在设备上并加载来自AdvancedMapViewer。

How can i implement offline map in android. I tried it with mapsforge library. It does not provides binary map file for Wisconsin state. So How can create my own map binary file ?

Thanks in advance.

解决方案

You will need two things:

1. a program that allows you to use the mapsforge library. Concerning this, you can stick with the program called AdvancedMapViewer which comes as an example with the library.

2. a mapfile. Bascially you have to create your own mapfile from OpenStreetMap data. This is done with a plugin for Osmosis. This plugin is described here:

https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Map-Writer.md

In short it works like this:

• Install Osmosis (http://wiki.openstreetmap.org/wiki/Osmosis)
• Install the plugin (https://github.com/mapsforge/mapsforge/blob/master/docs/Getting-Started-Map-Writer.md)
• Download the data (e.g. from geofabrik.de: http://download.geofabrik.de/north-america/us/wisconsin-latest.osm.pbf)

• run the osmosis task, thus run this on a shell (with osmosis in your PATH):

  osmosis --read-pbf wisconsin-latest.osm.pbf --mapfile-writer file=wisconsin.map

then put the created file wisconsin.map on your device and load it from AdvancedMapViewer.

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