第一次单击时不会显示infoWindow的图像，但在第二次单击时它会起作用 [英] infoWindow's image not showing on first click, but it works on second click

问题描述

我的Android使用Google Map android API，InfoWindow的图像在第一次单击时不会显示，但在第二次单击时会显示

My android using the Google map android API,InfoWindow's image not showing on first click, but it works on second click

我使用

void setMapInfoWindow(){
    mMap.setInfoWindowAdapter(new GoogleMap.InfoWindowAdapter() {
        @Override
        public View getInfoWindow(Marker arg0) {
            return null;
        }

        @Override
        public View getInfoContents(Marker arg0) {
            View v = getLayoutInflater().inflate(R.layout.windowlayout, null);
            final ImageView img = (ImageView)v.findViewById(R.id.imageView3);
            //image
            Picasso.with(context).load("http://imgurl").resize(140, 
        }

    });
}

这是我的标记设置过程

void setMarkers(){
    ...

    for (int i = 0; i < jsonArray.length(); i++) {
        JSONObject datas=jsonArray.getJSONObject(i);
        MarkerOptions tmp=new MarkerOptions()
                .title("name")
                .alpha(0.6f)
                .position(new LatLng(123,456));//replace LatLng with sample
        marker=mMap.addMarker(tmp);

    }
    ....
    setMapInfoWindow();
}

完成标记的设置后，我调用setMapInfoWindow()函数.

After I complete the Marker's setting, I call the setMapInfoWindow() function.

它可以在我的智能手机上使用，但是当您第一次单击infoWindow时，它不会显示图像；但会在第二次点击时显示.

It work on my smartphone, but when you click the infoWindow on first time, It would not show the image ; but it showing when second click.

我测试了某些情况:

1. 将网络图像替换为本地图像，问题仍然存在.
2. 将所有标记存储到ArrayList中，在完成所有过程之后，将所有标记设置为showInfoWindow()，然后将所有标记设置为hideInfoWindow().它可以工作，但是有一个infoWindow无法关闭(最后一个).
3. 我正在尝试使用位图来获取图像，但是它没有显示图像，因此我尝试了许多stackoverflow的方法.但是在使用Picasso库时可以使用.

1. replace the web image to local image, the problem still occur.
2. store all marker into ArrayList, after all process completed, set all markers to showInfoWindow() , then set all markers to hideInfoWindow(). It works, but there are a infoWindow cannot be closed(the final one).
3. I'm trying use the Bitmap to get the image, But It not showing image, I trying a lot of ways from stackoverflow. But it work when using the Picasso library.

谢谢

通过以下方式解决的问题: 加载时，似乎Google Web服务的图像URL将更改为另一个URL.

the problem solved by: it seems the google web service's image URL will be changed to another URL when loading.

示例:

https://maps.googleapis.com/maps/api/place /photo?photoreference =

它将被Google更改为以下URL:

it will be changed to following URL by google:

https://lh4.googleusercontent.com/ ......

https://lh4.googleusercontent.com/......

因此我将布尔值not_first_time_showing_info_window更改为int，并回调了三遍

so I change the boolean not_first_time_showing_info_window to int,and callback three times

    int not_first_time_showing_info_window=0;
    //show image
    try {
        if(not_first_time_showing_info_window==2){
            not_first_time_showing_info_window=0;
            Picasso.with(HomeActivity.this).load("http://....").resize(600,400).into(img);
        }
        else if (not_first_time_showing_info_window==1) {
            not_first_time_showing_info_window++;
            Picasso.with(HomeActivity.this).load("http://....").resize(600, 400).into(img,new InfoWindowRefresher(marker));
        }else if(not_first_time_showing_info_window==0){
            not_first_time_showing_info_window++;
            Picasso.with(HomeActivity.this).load("http://....").resize(600,400).into(img,new InfoWindowRefresher(marker));
        }
    } catch (Exception e) {
        img.setImageDrawable(null);
    }

推荐答案

首先，您可以创建一个自定义回调类来实现com.squareup.picasso.Callback:

First you can make a custom callback class to implement the com.squareup.picasso.Callback:

 private class InfoWindowRefresher implements Callback {
        private Marker markerToRefresh;

        private InfoWindowRefresher(Marker markerToRefresh) {
            this.markerToRefresh = markerToRefresh;
        }

        @Override
        public void onSuccess() {
            markerToRefresh.showInfoWindow();
        }

        @Override
        public void onError() {}
    }

第二，在您的活动中声明一个布尔变量:

Second, declare a boolean variable in your activity:

boolean not_first_time_showing_info_window;

第三，实现public View getInfoContents(Marker marker)方法:

   @Override
   public View getInfoContents(Marker marker) {
      View v = getLayoutInflater().inflate(R.layout.custom_window, null);
      ImageView image = (ImageView)v.findViewById(R.id.image_view);

      if (not_first_time_showing_info_window) {
          Picasso.with(MainActivity.this).load("image_URL.png").into(image);

      } else {
          not_first_time_showing_info_window = true;                         
          Picasso.with(MainActivity.this).load("image_URL.png").into(image, new InfoWindowRefresher(marker));
      }
      return v;
   }

您还可以访问此GitHub页面以完成实施.

You can also visit this GitHub page for completed implementation.

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