How to upload a PDF file to server in android?

问题

I referred some previously asked questions but not get proper solution.I am creating an Application and want to send PDF file by selecting it from File Manager.

Thanks any type of help would appreciated.

回答1:

Only you have to change this lines of code when you have to select PDF file from gallery . intent.setType("application/pdf") this will search only PDF files from gallery.

    Intent intent = new Intent();
    intent.setType("application/pdf");
    intent.setAction(Intent.ACTION_GET_CONTENT);
    startActivityForResult(Intent.createChooser(intent, "Select Pdf"), PDF);

回答2:

Use Okhttp library like this, it is the simplest way to do it. But You have to change your server(API or PHP) code according to this.

    RequestBody requestBody = new MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart("variable", fileName1,
                    RequestBody.create(MediaType.parse(fileType1), file))
            .addFormDataPart("key", "")


            .build();
    Request request = new Request.Builder().url("server url goes here").post(requestBody).build();
    okhttp3.Call call = client.newCall(request);
    call.enqueue(new Callback() {

        @Override
        public void onFailure(Call call, IOException e) {
            System.out.println("Registration Error" + e.getMessage());
        }

        @Override
        public void onResponse(Call call, okhttp3.Response response) throws IOException {

            try {
                String resp = response.body().string();
                Log.v("Docs", resp);

            } catch (IOException e) {
                System.out.println("Exception caught" + e.getMessage());
            }
        }

    });

来源：https://stackoverflow.com/questions/44133076/how-to-upload-a-pdf-file-to-server-in-android