对于OSMdroid MapView的双指旋转 [英] Two finger rotation for OSMdroid mapview

问题描述

我想提出两个手指旋转使用osmdroid我的离线地图。我是新来使用地图Android版。我有一个的GeoTIFF，我打算使用NDK中提取信息，后来将其发送到JAVA。我需要使用的GeoPoint使用指南针以及与真北达对齐。我怎样才能进行，任何帮助？

我也试试这个：
Android的双指旋转
例如，但没有运气，我的应用程序无法检测到任何两个手指的事件。

  @覆盖
保护无效的onCreate（捆绑savedInstanceState）{
    super.onCreate（savedInstanceState）;    mResourceProxy =新DefaultResourceProxyImpl（getApplicationContext（））;
    的setContentView（R.layout.activity_main）;
    图形页面=（图形页面）findViewById（R.id.mapview）;    //图形页面中，触摸Utilities
    mapView.setClickable（真）;
    mapView.setBuiltInZoomControls（真）;
    mapView.setMultiTouchControls（真）;    //设置的初始缩放级别，取决于你的需要
    。mapView.getController（）setZoom（nMyZoom）;    //显示位置叠加
    / *覆盖逐项* /
    {
            / *创建显示在部分城市的一些标记静态ItemizedOverlay。 * /
            最终的ArrayList＆LT; OverlayItem＆GT;项目=新的ArrayList＆LT; OverlayItem＆GT;（）;
            items.add（新OverlayItem（Fruchthalle，凯泽斯劳滕，新的GeoPoint（nMyLat，nMyLong）））;            / * OnTapListener的标记，显示了一个简单的烤面包。 * /
            this.mMyLocationOverlay =新ItemizedIconOverlay＆LT; OverlayItem＆GT;（物品，
                            新ItemizedIconOverlay.OnItemGestureListener＆LT; OverlayItem＆GT;（）{
                                    @覆盖
                                    公共布尔onItemSingleTapUp（最终诠释指数，最终OverlayItem项）{
                                            Toast.makeText（
                                                            MainActivity.this，
                                                            地方+ item.getTitle（）+'（指数=+指数
                                                                            +）得到了单抽头起来，Toast.LENGTH_LONG）.show（）;
                                            返回true; //我们'处理'此事件。
                                    }                                    @覆盖
                                    公共布尔onItemLong preSS（最终诠释指数，最终OverlayItem项）{
                                            Toast.makeText（
                                                            MainActivity.this，
                                                            地方+ item.getTitle（）+'（指数=+指数
                                                                            +）长了pressed，Toast.LENGTH_LONG）.show（）;
                                            返回false;
                                    }
                            }，mResourceProxy）;
            。this.mapView.getOverlays（）加（this.mMyLocationOverlay）;
    }
 

解决方案

你最近有没有看的 OpenStreetMapViewer 示例应用程序？还有就是<一个href=\"https://$c$c.google.com/p/osmdroid/source/browse/trunk/OpenStreetMapViewer/src/org/osmdroid/RotationGestureOverlay.java\"相对=nofollow> RotationGestureOverlay 在那里，覆盖专门展示了如何做到这一点。这是不顺利，因为我想它，但它会做的工作。

I'm trying to make two finger rotation for my offline maps using osmdroid. I'm new to using maps for android. I have a geoTIFF, I'm planning to extract info using NDK and later send it to JAVA. I need to use the geoPoint to align with True North Up using compass as well. How can I proceed, any help?

I did try this: Android Two finger rotation example, but no luck, my app was not able to detect any two finger event.

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    mResourceProxy = new DefaultResourceProxyImpl(getApplicationContext());
    setContentView(R.layout.activity_main);
    mapView = (MapView)findViewById(R.id.mapview);

    //Mapview touch utilities
    mapView.setClickable(true);
    mapView.setBuiltInZoomControls(true);
    mapView.setMultiTouchControls(true);

    //set initial zoom-level, depends on your need
    mapView.getController().setZoom(nMyZoom); 

    //Display Position Overlay
    /* Itemized Overlay */
    {
            /* Create a static ItemizedOverlay showing a some Markers on some cities. */
            final ArrayList<OverlayItem> items = new ArrayList<OverlayItem>();
            items.add(new OverlayItem("Fruchthalle", "Kaiserslautern", new GeoPoint(nMyLat, nMyLong)));

            /* OnTapListener for the Markers, shows a simple Toast. */
            this.mMyLocationOverlay = new ItemizedIconOverlay<OverlayItem>(items,
                            new ItemizedIconOverlay.OnItemGestureListener<OverlayItem>() {
                                    @Override
                                    public boolean onItemSingleTapUp(final int index, final OverlayItem item) {
                                            Toast.makeText(
                                                            MainActivity.this,
                                                            "Place '" + item.getTitle()+ "' (index=" + index
                                                                            + ") got single tapped up", Toast.LENGTH_LONG).show();
                                            return true; // We 'handled' this event.
                                    }

                                    @Override
                                    public boolean onItemLongPress(final int index, final OverlayItem item) {
                                            Toast.makeText(
                                                            MainActivity.this,
                                                            "Place '" + item.getTitle() + "' (index=" + index
                                                                            + ") got long pressed", Toast.LENGTH_LONG).show();
                                            return false;
                                    }
                            }, mResourceProxy);
            this.mapView.getOverlays().add(this.mMyLocationOverlay);
    }

解决方案

Have you taken a look at the OpenStreetMapViewer sample app? There is the RotationGestureOverlay overlay in there that specifically shows how to do this. It isn't as smooth as I would like it, but it will do the job.

这篇关于对于OSMdroid MapView的双指旋转的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！