如何在<PointF>安卓上通过改装多部件发布列表？

Question

我想制作一个可以从画布发送图像和pointf的Android应用程序。我已经成功地发送了带有retorifit multipart的图像。我的下一个目标是发送列表。但是我困惑了如何发送？

这是发送图像的代码

final ProgressRequestBody fileBody = new ProgressRequestBody(uploadFile, this);
                final MultipartBody.Part body = MultipartBody.Part.createFormData("image", uploadFile.getName(), fileBody);
                new Thread(new Runnable() {
                    @Override
                    public void run() {
                        Observable<String> upload = apiService.uploadFile(body);
                        upload.subscribeOn(Schedulers.io())
                                .observeOn(AndroidSchedulers.mainThread())
                                .unsubscribeOn(Schedulers.io())
                                .subscribe(new Observer<String>() {
                                    @Override
                                    public void onSubscribe(Disposable d) {
                                    }
                                    @Override
                                    public void onNext(String s) {
                                        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
                                        Glide.with(PolygonActivity.this)
                                                .load(s)
                                                .apply(RequestOptions.skipMemoryCacheOf(true))
                                                .apply(RequestOptions.diskCacheStrategyOf(DiskCacheStrategy.NONE))
                                                .into(sourceImageView);
                                    }
                                    @Override
                                    public void onError(Throwable t) {
                                        getWindow().clearFlags(WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE);
                                        Toast.makeText(PolygonActivity.this, "error response: " + t.getMessage(), Toast.LENGTH_SHORT).show();
                                    }
                                    @Override
                                    public void onComplete() {
                                    }
                                });
                    }}).start();

这是我的apiservice

@Multipart
    @POST("api/upload")
    Observable<String> uploadFile(@Part MultipartBody.Part file);

我想发送私有列表pointfs = new ArrayList＆lt;>((;。当我敬酒时，它显示[pointf(312.31,432.1212(，pointf(344.34,53.131(]。因此，我使如何通过改造将其发送。我需要您的帮助。

Answer 1

尝试像这样做

    Gson gson = new Gson(); 
    String pointFListString= gson.toJson(pointFSArrayList);
RequestBody pointFList= RequestBody.create(MediaType.parse("multipart/form-data"), pointFListString);
    @Multipart
        @POST("api/upload")
        Observable<String> uploadFile(@Part MultipartBody.Part file,
                                      @Part("pointFArrayKey") RequestBody pointFList);