Question

我在使用动态内容填充InfoWindows时遇到了困难。我有一个包含数据的ArrayList，我想填充infoWindow。如果我在标记上使用方法片段，动态显示数据，但所有在一行，所以我被迫使用CustomInfoWindowAdapter。如果我使用CustomInfoWindowAdapter，我会为每个InfoWindow显示相同的数据。我错了什么？

这是我的CustomInfoWindowAdapter：

class MarkerInfoWindowAdapter implements InfoWindowAdapter {

        private View inflatedView;
        private View tempView;
        private String title, description;

        public void setTitle(String title) {
            this.title = title;
        }

        public void setDescription(String description) {
            this.description = description;
        }

        MarkerInfoWindowAdapter() {
            inflatedView = getLayoutInflater().inflate(R.layout.info_window_layout, null);
         //   tempView = getLayoutInflater().inflate(R.layout.location_content_window, null);
        }

        @Override
        public View getInfoContents(Marker marker) {
          //  setInfo(marker, inflatedView);
            return inflatedView;
        }

        @Override
        public View getInfoWindow(Marker marker) {
           setInfo(marker, inflatedView);
            return inflatedView;
        }

        private void setInfo(Marker marker, View view) {
            final TextView txtTitle = (TextView) view.findViewById(R.id.title);
            final TextView txtDescription = (TextView) view.findViewById(R.id.lat_lng);
            txtTitle.setText(title);
            txtDescription.setText(description);
        }
    }

这是我从ArrayList创建Marker和InfoWindow的方法。

public void drawRoute(HashMap<String, ArrayList<HashMap<String, String>>> result, String type) {
        ArrayList<HashMap<String, String>> voyageplan = result.get("optimal");
        HashMap<String, String> waypoint1;

        for (int i = 0; i < voyageplan.size(); i++) {

            waypoint1 = voyageplan.get(i);        

            googleMap.addMarker(new MarkerOptions().position(position)
             .title("WP# "+waypoint1.get("WP").toString()+" (optimal)")
             .snippet("prova")
             .anchor(0.5f, 0.5f).draggable(false)    
             .icon(BitmapDescriptorFactory.defaultMarker(BitmapDescriptorFactory.HUE_MAGENTA)));

            infoWindowAdapter = new MarkerInfoWindowAdapter();
            infoWindowAdapter.setTitle(voyageplan.get(i).get("WP"));
            infoWindowAdapter.setDescription(voyageplan.get(i).get("lat"));
            googleMap.setInfoWindowAdapter(infoWindowAdapter);
    }

提前感谢您的帮助

Answer 1

我不知道如何修复你的方法，但这就是我实现我的方法。我实际上有两种方法。

第一种方法：创建另一个函数来为您获取数据并在mapInitialization中调用该函数。

第二种方法：保存每个marker.snippet中的所有动态数据属性为逗号分隔值并提取您的信息通过处理分离这些以逗号分隔的存储数据对于每个标记。

我实现了下面的第一种方法。

// This function is where you read from your array, web, REST API or
// whatever to get the dynamic  data needed to put into your markers. 
//I just used a simple case of if and else to show dynamically changing
//string is returned. 

private String getDescriptionFromMarkerSoon(double latitude, double longitude) {
    // Access database or data structure here using arguments as key
    if (longitude > 0) {
        return "I am a boy";
    } else {
        return "I am a girl";
    }
}

// This is the one time setup that you need to do inside the setUpMapIfNeeded()
// function that is created by Android Studio if you initialize your project
// as a Google Maps Template. 
private void setUpMapIfNeeded() {
    // Do a null check to confirm that we have not already instantiated the map.
    if (mMap == null) {
        // Try to obtain the referecen of the map from the SupportMapFragment.
        mMap = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.map))
                .getMap();
        // Check if we were successful in obtaining the map.
        if (mMap != null) {
            // add the layout for customizedInfoWindow in Google Maps
            mMap.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {

                @Override
                // Returning null here will automatically call getInfoContents
                public View getInfoWindow(Marker arg0) {
                    return null;
                }

                // Get the information to be displayed on the current window
                @Override
                public View getInfoContents(Marker marker) {
                    // Get the layout file for InfoContent
                    View v = getLayoutInflater().inflate(R.layout.info_window, null); // null means dont attach to any parent window
                    TextView tvDescription = (TextView) v.findViewById(R.id.tv_description);
                    TextView tvSnippet = (TextView) v.findViewById(R.id.tv_snippet);
                    TextView tvLat = (TextView) v.findViewById(R.id.tv_lat);
                    TextView tvLng = (TextView) v.findViewById(R.id.tv_lng);

                    // Get position of marker
                    LatLng markerPos = marker.getPosition();
                    tvLat.setText("Latitude: " + markerPos.latitude);
                    tvLng.setText("Longitude: " + markerPos.longitude);
                    tvSnippet.setText(marker.getSnippet());
                   // Call the function you created here to get
                   // the dynamic data 
                   tvDescription.setText(getDescriptionFromMarkerSoon
                   (markerPos.latitude, markerPos.longitude));
                    // Return the view created
                    return v;
                }
            });
            setUpMap();

        }
    }
}

这就是我的layout / info_window.xml文件在这个例子中的样子

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

    <TextView
        android:id="@+id/tv_description"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="15sp"
        android:textStyle="bold"
        />


    <TextView android:id="@+id/tv_snippet"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="10sp"
        />

    <TextView
        android:id="@+id/tv_lat"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="5sp"

        />

    <TextView android:id="@+id/tv_lng"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="5sp"

        />

    </LinearLayout>
</LinearLayout>

如何将ArrayList中的动态数据设置为InfoWindow

1 个答案: