Question

我想在Google地图上显示多个标记。我想在圆形区域显示标记为数字。如下图所示：

添加多个标记我已经完成了：

Adding multiple markers in Google Maps API v2 Android

How to show multiple markers on MapFragment in Google Map API v2?

我已通过此代码获得了多个标记：

public class ComplaintsMapActivity extends FragmentActivity implements OnMapReadyCallback  {

    private GoogleMap mMap;
    private NetworkManager networkManager = null;
    private int reqIdComplaintList = -1;
    private ArrayList<ComplaintData> complaintList = new ArrayList<>();

    private static final int ZOOM_LEVEL = 15;
    private static final int TILT_LEVEL = 0;
    private static final int BEARING_LEVEL = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_complaints_map);
        // Obtain the SupportMapFragment and get notified when the map is ready to be used.
        SupportMapFragment mapFragment = (SupportMapFragment) getSupportFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

        networkManager = NetworkManager.getInstance();

    }

    @Override
    public void onMapReady(GoogleMap googleMap) {
        mMap = googleMap;

        complaintList = (ArrayList<ComplaintData>)getIntent().getSerializableExtra("list");


        for (int i = 0; i < complaintList.size(); i++) {
            ComplaintData location = complaintList.get(i);
            LatLng position = new LatLng(Double.parseDouble(location.getLat()), Double.parseDouble(location.getLng()));
            mMap.addMarker(new MarkerOptions().position(position));

            if (i == 0) {
                CameraPosition camPos = new CameraPosition(position, ZOOM_LEVEL, TILT_LEVEL, BEARING_LEVEL);
                mMap.moveCamera(CameraUpdateFactory.newCameraPosition(camPos));
            }
        }

    }

}

我的结果是：

我知道如何设置自定义标记。但是这些数据是动态的，任何数量的数据都将存在。所以我想问一下是否有任何方法可以通过任何循环产生这些数字。因为将标记设置到每个位置，我将需要数百个标记，这是不太优选的。那么有什么选择吗？

注意：我不想要群集。我只想在一个标记上显示1，在第二个标记上显示2，在100个标记上显示100，依此类推。

任何帮助将不胜感激。

谢谢：）

Answer 1

首先您需要为您的标记创建自定义布局：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content">

<ImageView
   android:layout_width="@dimen/_35sdp"
   android:layout_height="@dimen/_45sdp"
   android:src="@drawable/ic_marker" />

<TextView
   android:id="@+id/num_txt"
   android:layout_width="wrap_content"
   android:layout_height="wrap_content"
   android:layout_centerInParent="true"
   android:paddingBottom="@dimen/_10sdp"
   android:text="20"
   android:textColor="@color/white"
   android:textSize="@dimen/font_title"
   android:textStyle="bold" />

</RelativeLayout>

你的形象可以是一个可绘画的。您可以将imageview或背景带到textview。两者都有效

View marker = ((LayoutInflater) getActivity().getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.custom_marker_layout, null);
   TextView numTxt = (TextView) marker.findViewById(R.id.num_txt);
Marker myMarker = googleMap.addMarker(new MarkerOptions().position(latLng).title(arrPostList.get(i).getRestaurant_name()).icon(BitmapDescriptorFactory.fromBitmap(Utils.createDrawableFromView(getActivity(), marker))));

从Drawable方法创建位图：

// Convert a view to bitmap
 public static Bitmap createDrawableFromView(Context context, View view) {
   DisplayMetrics displayMetrics = new DisplayMetrics();
   ((Activity) context).getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
   view.setLayoutParams(new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT));
   view.measure(displayMetrics.widthPixels, displayMetrics.heightPixels);
   view.layout(0, 0, displayMetrics.widthPixels, displayMetrics.heightPixels);
   view.buildDrawingCache();
   Bitmap bitmap = Bitmap.createBitmap(view.getMeasuredWidth(), view.getMeasuredHeight(), Bitmap.Config.ARGB_8888);

   Canvas canvas = new Canvas(bitmap);
   view.draw(canvas);

   return bitmap;
}

带有来自服务器

1 个答案: