Question

当我有一个群集17,18时，它显示＆＃34; 10 +＆＃34;，＆＃34; 20 +＆＃34;。如何显示确切的数字？

感谢。

Answer 1

public class MyClusterItemRenderer extends DefaultClusterRenderer<MyClusterItem> {

    private final IconGenerator mIconGenerator;
    private final ShapeDrawable mColoredCircleBackground;
    private final float mDensity;

    private SparseArray<BitmapDescriptor> mIcons = new SparseArray();

    public MyClusterItemRenderer(Context context, GoogleMap map, ClusterManager<MyClusterItem> clusterManager) {
        super(context, map, clusterManager);
        mIconGenerator = new IconGenerator(context);
        mColoredCircleBackground = new ShapeDrawable(new OvalShape());
        mDensity = context.getResources().getDisplayMetrics().density;

        SquareTextView squareTextView = new SquareTextView(context);
        ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(-2, -2);
        squareTextView.setLayoutParams(layoutParams);
        squareTextView.setId(com.google.maps.android.R.id.text);
        int twelveDpi = (int)(12.0F * this.mDensity);
        squareTextView.setPadding(twelveDpi, twelveDpi, twelveDpi, twelveDpi);
        this.mIconGenerator.setContentView(squareTextView);

        mIconGenerator.setTextAppearance(com.google.maps.android.R.style.ClusterIcon_TextAppearance);

        ShapeDrawable outline = new ShapeDrawable(new OvalShape());
        outline.getPaint().setColor(Color.parseColor("#FFFFFF"));
        LayerDrawable background = new LayerDrawable(new Drawable[]{outline, this.mColoredCircleBackground});
        int strokeWidth = (int) (this.mDensity * 3.0F);
        background.setLayerInset(1, strokeWidth, strokeWidth, strokeWidth, strokeWidth);
        mIconGenerator.setBackground(background);

    }



    @Override
    protected void onBeforeClusterRendered(Cluster<MyClusterItem> cluster, MarkerOptions markerOptions) {
        int bucket = this.getBucket(cluster);
        BitmapDescriptor descriptor = (BitmapDescriptor)this.mIcons.get(bucket);
        if(descriptor == null) {
            this.mColoredCircleBackground.getPaint().setColor(this.getColor(bucket));
            descriptor = BitmapDescriptorFactory.fromBitmap(this.mIconGenerator.makeIcon(String.valueOf(cluster.getSize())));
            this.mIcons.put(bucket, descriptor);
        }

        markerOptions.icon(descriptor);
    }
}

活动：

clusterManager.setRenderer(new MyClusterItemRenderer(getApplicationContext(), mGoogleMap, clusterManager));

Answer 2

默认情况下，Google Map提供大约数量的集群项目。要获得准确的集群项数，只需在自定义集群渲染器类中重写以下两个方法：

 @Override
    protected String getClusterText(int bucket) {
        return String.valueOf(bucket);
    }

    @Override
    protected int getBucket(Cluster<MyItem> cluster) {
        return cluster.getSize();
    }

完整的代码段是：

public class MarkerClusterRenderer extends DefaultClusterRenderer<MyItem> {

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

    @Override
    protected void onBeforeClusterItemRendered(MyItem item, MarkerOptions markerOptions) {
        // use this to make your change to the marker option
        // for the marker before it gets render on the map
        markerOptions.icon(BitmapDescriptorFactory.fromResource(R.drawable.ic_map_pins));

    }

    @Override
    protected void onClusterItemRendered(MyItem item, Marker marker) {
       //set marker title, tag, snippet, e.t.c here

    }

    @Override
    protected String getClusterText(int bucket) {
        return String.valueOf(bucket);
    }

    @Override
    protected int getBucket(Cluster<MyItem> cluster) {
        return cluster.getSize();
    }
}

这是结果：

快乐编码：）

Answer 3

您可以实现ClusterRenderer来自定义群集的呈现。 DefaultClusterRenderer提供了一个很好的基础。通过继承DefaultClusterRenderer，您可以覆盖默认值。

有关自定义的深入示例，请查看实用程序库附带的demo app中的CustomMarkerClusteringDemoActivity。

Source

Answer 4

这个有点老了，但是因为它帮助我找到了一个更简单的解决方案，所以我以为我在这里发布了。

Berdimurat的想法正确，只是解决方案更简单。

@Override
protected int getBucket(Cluster<FlagItemCluster> cluster) {
    return cluster.getSize();
}

@Override
protected String getClusterText(int bucket) {
    return String.valueOf(bucket);
}

基本上，而不是使用onBeforeClusterRendered，只需更改它获取数据的位置即可。此方法还纠正由于getBucket逻辑包含的内容而导致显示的数字不正确的情况。

准确显示聚簇标记的数量

4 个答案: