Android

Question

我已经搜索过相关问题，但没有找到。我创建了一个 InfoWindowMarker 来显示图片、姓名和地址。然后我创建 OnInfoWindowClickListener，它将显示所选标记的纬度和经度。但是当我单击信息 Window 时，我收到了这条错误消息。

Logcat:

com.xxxxxxxx.xxxxxxxxxx E/Zygote﹕ Zygote: error closing descriptor libcore.io.ErrnoException: close failed: EBADF (Bad file number) at libcore.io.Posix.close(Native Method) at libcore.io.BlockGuardOs.close(BlockGuardOs.java:75) at com.android.internal.os.ZygoteInit.closeServerSocket(ZygoteInit.java:221) at com.android.internal.os.ZygoteConnection.handleChildProc(ZygoteConnection.java:879) at com.android.internal.os.ZygoteConnection.runOnce(ZygoteConnection.java:242) at com.android.internal.os.ZygoteInit.runSelectLoop(ZygoteInit.java:713) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:649) at dalvik.system.NativeStart.main(Native Method)

信息Window适配器：

public GoogleMap.InfoWindowAdapter CustomMarkerInfo = new GoogleMap.InfoWindowAdapter() {
    @Override
    public View getInfoWindow(Marker marker) {
        ViewGroup viewGroup = (ViewGroup)getLayoutInflater().inflate(R.layout.custom_info_window, null);
        ImageView ivRow = (ImageView)viewGroup.findViewById(R.id.ivRowImage);
        TextView locationName = (TextView)viewGroup.findViewById(R.id.tvRowTitle);
        TextView locationAddress = (TextView)viewGroup.findViewById(R.id.tvRowTitle2);
        Bitmap locationImage;

        locationName.setText(marker.getTitle());
        locationAddress.setText(marker.getSnippet());
        URL imageURL;
        try {
            imageURL = new URL(markerInfo.get(marker.getId()));
            locationImage = BitmapFactory.decodeStream(imageURL.openConnection().getInputStream());
            ivRow.setImageBitmap(locationImage);
        }catch (Exception e){
            e.printStackTrace();
        }
        return viewGroup;
    }

    @Override
    public View getInfoContents(Marker marker) {return null;}
};

OnInfoWindowClickListener:

 private GoogleMap.OnInfoWindowClickListener onInfoWindowClickListener = new GoogleMap.OnInfoWindowClickListener() {
    @Override
    public void onInfoWindowClick(Marker marker) {
        LatLng myLatLng = myLatLng();
        Toast.makeText(getApplicationContext(),myLatLng.toString(),Toast.LENGTH_LONG).show();
    }
};

private final LocationListener locationListener = new LocationListener() {
    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {}

    @Override
    public void onProviderEnabled(String provider) {}

    @Override
    public void onProviderDisabled(String provider) {}

    @Override
    public void onLocationChanged(Location newLocation) {

    }
};

private LatLng myLatLng(){
    LocationManager locationManager = (LocationManager)getSystemService(Context.LOCATION_SERVICE);
    String provider;
    Location location;
    LatLng myLatLng = null;

    if(locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)){
        provider = LocationManager.GPS_PROVIDER;
        Toast.makeText(getApplicationContext(),"GPS tidak aktif.",Toast.LENGTH_LONG).show();
    }else if(locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)){
        provider = LocationManager.NETWORK_PROVIDER;
    }else{
        provider = LocationManager.PASSIVE_PROVIDER;
    }


    if(locationManager.getLastKnownLocation(provider) == null){
        locationManager.requestLocationUpdates(provider,2000,10,locationListener);
        location = locationManager.getLastKnownLocation(provider);
        if(location == null){
            Toast.makeText(getApplicationContext(),"Tidak dapat menemukan lokasi saat ini, coba lagi.",Toast.LENGTH_LONG).show();
        }else{
            location = locationManager.getLastKnownLocation(provider);
            myLatLng = new LatLng(location.getLatitude(),location.getLongitude());
        }
    }else{
        location = locationManager.getLastKnownLocation(provider);
        myLatLng = new LatLng(location.getLatitude(),location.getLongitude());
    }
    return myLatLng == null ? myLatLng() : myLatLng;
}

感谢任何解决方案。

更新：从加载的 JSON 创建的标记。如果它可能会导致此问题。

Answer 1

这可能是线程问题。在从 URL 加载图像之前，您的 viewGroup 已返回。一个简单的解决方法是使用第三方图片加载库Picasso.

示例代码：

 ImageView imageView = (ImageView)myContentsView.findViewById(R.id.ivRowImage);
 if (not_first_time_showing_info_window) {
     Picasso.with(getApplicationContext()).load("YOUR_IMG_URL").into(imageView);
 } else { // if it's the first time, load the image with the callback set
     not_first_time_showing_info_window=true;
     Picasso.with(getApplicationContext()).load("YOUR_IMG_URL").into(imageView,new InfoWindowRefresher(marker));
 }

然后你可以有一个私有的帮助方法来确保第一次点击时显示的是异步的：

 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() {}
    }

您可以参考此 GitHub 页面以了解完整的实现：https://github.com/jbj88817/GoogleMap-InfoWindow-android/blob/master/app/src/main/java/com/bjiang/map_ex/MainActivity.java

如果你真的想用 ImageLoader 做，你可以看看这个post：http://androidfreakers.blogspot.com/2013/08/display-custom-info-window-with.html （但是比起用Picasso从URL加载比较复杂）

Android - EBADF（错误文件编号）OnClickInfoMarker

Android - EBADF (Bad file number) OnClickInfoMarker

java

google-maps