Question

我有一个应用程序，其中标记是相机拍摄的图像并作为缩略图返回。现在我遇到的问题是，当实现onMarkerClick以显示完整大小时，它只会返回在点击所有标记时拍摄的最新图像。

那么有没有办法将标记的ID或图像保存到该标记，以便当用户点击该标记以显示该标记的图像将显示的完整图像时？

这是我到目前为止的onMarkerClick代码：

@Override
public boolean onMarkerClick (Marker arg0){
  Intent intent = new Intent();
  intent.setAction(Intent.ACTION_VIEW);
  Uri imgUri = Uri.parse("file://" + destinationFile);
  intent.setDataAndType(imgUri, "image/*");
  startActivity(intent);
  return false;

使用此代码，它会显示相机拍摄的最后一张图像。

有人可以帮忙，也可以提供一些能帮我解决这个问题的代码吗？

由于

更新

onMapLongClick

Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
startActivityForResult(intent, CAPTURE_IMAGE_THUMBNAIL_ACTIVITY_REQUEST_CODE);

onActivityResult

protected void onActivityResult(int requestCode, int resultCode, Intent data)
{ 
    if (requestCode == CAPTURE_IMAGE_THUMBNAIL_ACTIVITY_REQUEST_CODE)
    {
        File imageStorageFolder = new File(Environment.getExternalStorageDirectory()+File.separator+"My Folder");
        if (!imageStorageFolder.exists())
        {
            imageStorageFolder.mkdirs();
            Log.d(TAG , "Folder created at: "+imageStorageFolder.toString());
        }
       if (data != null)
        {
            String filename = "image";
            String fileNameExtension = ".jpg";
            Environment.getExternalStorageDirectory();
            String imageStorageFolder1 = File.separator+"My Folder"+File.separator;
            markerImagePathMap.put(markerId, imageStorageFolder1 + filename + fileNameExtension);
            Log.d(TAG, "the destination for image file is: " + markerImagePathMap );
            if (data.getExtras() != null)
            {
                bitmap = (Bitmap)data.getExtras().get("data");
                try
                {
                    FileOutputStream out = new FileOutputStream((File) markerImagePathMap);
                    bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
                    out.flush();
                    out.close();
                catch (Exception e)
                {
                    Log.e(TAG, "ERROR:" + e.toString());
                }
                MarkerOptions markerOptions = new MarkerOptions()
                            .draggable(true)
                            .snippet("snippet")
                            .title("Title")
                            .position(point)
                            .icon(BitmapDescriptorFactory
                                    .fromBitmap(bitmap));
                            googleMap.addMarker(markerOptions);

onMarkerClick

@Override
        public boolean onMarkerClick (Marker marker){
        markerId = marker.getId();

        if(markerImagePathMap.get(marker.getId() == null) != null){
            // take image for marker
        }
        else{
            Intent intent = new Intent();
            intent.setAction(Intent.ACTION_VIEW);
            Uri imgUri = Uri.parse("file://" + markerImagePathMap.get(markerId));
            intent.setDataAndType(imgUri, "image/*");
            startActivity(intent);
        }
        return false;

问题是marker.getId(); Type mismatch: cannot convert from String to int下if(markerImagePathMap.**get**(marker.getId() == null)){以及The method get(int) in the type SparseArray<String> is not applicable for the arguments (boolean)下{{1}}

下的错误

Answer 1

我打算将此作为评论，但它很草率。如果不知道你是如何处理你的项目的，那么这些代码可能会被关闭，但这个想法仍然存在。

创建以下类变量

private Map<String, String> markerImagePathMap;

创建一个HashMap，将您的标记ID映射到目标文件

@Override
public void onCreate...{
    super.onCreate...;

    markerImagePathMap = new HashMap<String, String>();
}

修改onActivityResult（）方法以存储标记及其关联的文件路径

String destinationFilePath = imageStorageFolder1 + filename + fileNameExtension;
Marker marker = googleMaps.addMarker(markerOptions);
markerImagePathMap.put(marker.getId(), destinationFilePath);

在onMarkerCLick（标记标记）中，将方法更新为

Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
Uri imgUri = Uri.parse("file://" + markerImagePathMap.get(marker.getId());
intent.setDataAndType(imgUri, "image/*");
startActivity(intent);
return false;

编辑说明

将markerImagePathMap从SparseArray更改为HashMap
使用动态创建的标记的id作为Map的关键。

<强>更新

我觉得你的问题出现在onActivityResult（）上。它看起来像

protected void onActivityResult(int requestCode, int resultCode, Intent data){ 
    if (requestCode == CAPTURE_IMAGE_THUMBNAIL_ACTIVITY_REQUEST_CODE){
        File imageStorageFolder = new File(Environment.getExternalStorageDirectory()+File.separator+"My Folder");
        if (!imageStorageFolder.exists()){
            imageStorageFolder.mkdirs();
            Log.d(TAG , "Folder created at: "+imageStorageFolder.toString());
        }
        if (data != null){
            String filename = "image";
            String fileNameExtension = ".jpg";
            Environment.getExternalStorageDirectory();
            String imageStorageFolder1 = File.separator+"My Folder"+File.separator;

            /** CHANGE **/
            String destinationFilePath = imageStorageFolder1 + filename + fileNameExtension;
            Log.d(TAG, "the destination for image file is: " + destinationFilePath );
            /** DONE CHANGE **/

            if (data.getExtras() != null){
                bitmap = (Bitmap)data.getExtras().get("data");
                try{
                    FileOutputStream out = new FileOutputStream((File) markerImagePathMap);
                    bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
                    out.flush();
                    out.close();
            }catch (Exception e){
                Log.e(TAG, "ERROR:" + e.toString());
            }

            MarkerOptions markerOptions = new MarkerOptions()
                .draggable(true)
                .snippet("snippet")
                .title("Title")
                .position(point)
                .icon(BitmapDescriptorFactory
                .fromBitmap(bitmap));

            /** CHANGE **/
            Marker marker = googleMap.addMarker(markerOptions);
            markerImagePathMap.put(marker.getId(), destinationFilePath);
            /** DONE CHANGE **/
        }
    }
}

有没有办法点击标记并将图像返回到全屏？

1 个答案: