如何添加标题，片段和图标ClusterItem？ [英] How to add title, snippet and icon to ClusterItem?

问题描述

我有这样的活动：

public class MapViewer extends Activity {

    private GoogleMap map;
    private Database db = new Database(this);

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mapviewer);

        try {
            map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
            if (map != null) {
                map.setMyLocationEnabled(true);
                map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
                map.getUiSettings().setRotateGesturesEnabled(false);

                this.addMerchantMarkers(new MarkerOptions());
            }
        } catch (NullPointerException e) {
            e.printStackTrace();
        }
    }

    public void addMerchantMarkers(MarkerOptions mo) {
        SQLiteDatabase dbRead = db.getReadableDatabase();
        Cursor result = dbRead.rawQuery("SELECT title, addr, lat, lon FROM users", null);

        while(result.moveToNext()) {            
            map.addMarker(mo.position(new LatLng(result.getFloat(2), result.getFloat(3)))
                    .title(result.getString(0))
                    .snippet(result.getString(1))
                    );;
        }
    }
}

，我在下面的方式使用标记聚类改变​​：

that i changed in the following way to use markers clustering:

public class MapViewer extends Activity {

    private GoogleMap map;
    private Database db = new Database(this);
    private ClusterManager<MyItem> mClusterManager;

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mapviewer);

        try {
            map = ((MapFragment) getFragmentManager().findFragmentById(R.id.map)).getMap();
            if (map != null) {
                map.setMyLocationEnabled(true);
                map.setMapType(GoogleMap.MAP_TYPE_NORMAL);
                map.getUiSettings().setRotateGesturesEnabled(false);

                setUpClusterer();
            }
        } catch (NullPointerException e) {
            e.printStackTrace();
        }
    }

    private void setUpClusterer() {
        mClusterManager = new ClusterManager<MyItem>(this, map);

        map.setOnCameraChangeListener(mClusterManager);
        map.setOnMarkerClickListener(mClusterManager);

        addItems();
    }

    private void addItems() {
        SQLiteDatabase dbRead = db.getReadableDatabase();
        Cursor result = dbRead.rawQuery("SELECT lat, lon, title, addr FROM users", null);

        while(result.moveToNext()) {
            MyItem offsetItem = new MyItem(result.getFloat(0), result.getFloat(1));
            mClusterManager.addItem(offsetItem);
        }
    }
}

现在我不知道如何添加标题，片段和图标的每个标记像previous code。 现在，如果我点击单个标记没有任何反应？ 如何获得的？

Now i don't know how to add title, snippet and icon to every marker like previous code. Now if i click on single marker nothing happens... How to get that?

推荐答案

在这里，你应该与ClusterManager本身。 例如，在集群项目点击设置：

Here you should work with ClusterManager itself. For example, setting on cluster item click:

        mClusterManager.setOnClusterItemClickListener(new ClusterManager.OnClusterItemClickListener<MyItem>() {
            @Override
            public boolean onClusterItemClick(MyItem item) {
                //put your code here
                return false;
            }
        });

和有在ClusterManager类等不同的方法。 你需要一个不太明显的code到信息窗口指定给标记或集群 - 你应该使用code：

And there are other different methods in ClusterManager class. You'll need a less obvious code to assign info window to marker or cluster - you should use this code:

mClusterManager.getMarkerCollection().setOnInfoWindowAdapter(new MarkerInfoWindowAdapter());
mClusterManager.getClusterMarkerCollection().setOnInfoWindowAdapter(new ClusterInfoWindow());

有MarkerInfoWindowAdapter和ClusterWindowAdapter是你的类，它实现GoogleMap.InfoWindowAdapter。

There MarkerInfoWindowAdapter and ClusterWindowAdapter is your classes, which implements GoogleMap.InfoWindowAdapter.

使用图标，这是一个有点困难，因为集群改变图标为默认值。您应该使用方法：

With icons it's a little harder, because clustering changes icons to default. You should use method:

public void setRenderer(com.google.maps.android.clustering.view.ClusterRenderer<T> view)

您可以自己渲染器类，并覆盖一些方法。例如，要设置自定义图标使用这样的类：

You could your own renderer class and override some methods. For example, to set custom icons use such a class:

class OwnIconRendered extends DefaultClusterRenderer<MyItem> {

    public OwnIconRendered(Context context, GoogleMap map,
                           ClusterManager<MyItem> clusterManager) {
        super(context, map, clusterManager);
    }

    @Override
    protected void onBeforeClusterItemRendered(MyItem item, MarkerOptions markerOptions) {
        markerOptions.icon(item.getIcon());
        markerOptions.snippet(item.getSnippet());
        markerOptions.title(item.getTitle());
        super.onBeforeClusterItemRendered(item, markerOptions);
    }
}

和使用它以这样一种方式：

And use it in such way:

mClusterManager.setRenderer(new OwnIconRendered(activity.getApplicationContext(), getMap(), mClusterManager));

这篇关于如何添加标题，片段和图标ClusterItem？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！