Question

我有一份登记表。除了名字，姓氏和用户名等用户信息外，我希望用户上传图片。

目前，我已设法使用相机在ImageView中加载图像缩略图并显示在视图中。现在我也想上传图片。

以下是我Register.java中的代码，只有字符串才能正常运行。

String requested_method = "register";

RegisterTask registerTask = new RegisterTask(Register.this);
registerTask.execute(requested_method, first_name_entered, last_name_entered, username_entered);

由于我的RegisterTask.java是一个大文件，因此我只是在这里粘贴相关信息。

public class RegisterTask extends AsyncTask<String,Void,String> {
    Context context;

    public RegisterTask(Context ctx) {
        context = ctx;
    }

    @Override
    protected String doInBackground(String... params) {
        String register_url = "http://my_website.com/register.php";
    String requested_method = params[0];
    String first_name = params[1];
    String last_name = params[2];
    String username = params[3];

    if (requested_method.equals("register")) {
        try {
            URL url = new URL(submit_order_url);
            HttpURLConnection httpURLConnection = (HttpURLConnection)url.openConnection();
            httpURLConnection.setRequestMethod("POST");
            httpURLConnection.setDoOutput(true);
            httpURLConnection.setDoInput(true);
            OutputStream outputStream = httpURLConnection.getOutputStream();
            BufferedWriter bufferedWriter = new BufferedWriter(new OutputStreamWriter(outputStream,"UTF-8"));

            String data = URLEncoder.encode("first_name","UTF-8")+"="+URLEncoder.encode(first_name,"UTF-8")+"&"
                    +URLEncoder.encode("last_name","UTF-8")+"="+URLEncoder.encode(last_name,"UTF-8")+"&"
                    +URLEncoder.encode("username","UTF-8")+"="+URLEncoder.encode(username,"UTF-8");

            bufferedWriter.write(data);
            bufferedWriter.flush();
            bufferedWriter.close();
            outputStream.close();

            InputStream inputStream = httpURLConnection.getInputStream();
            BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream,"iso-8859-1"));

            String response_data = "";
            String line = "";

            while((line = bufferedReader.readLine()) != null) {
                response_data+= line;
            }

            bufferedReader.close();
            inputStream.close();
            httpURLConnection.disconnect();
            return response_data;
        } catch (MalformedURLException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

        return null;
    }
}

此代码工作正常。

现在我想要做的是，将我在ImageView中加载的图像添加到此AsyncTask并上传。如果我尝试将Bitmap与字符串一起发送，则会出错。

我该怎么办？

Answer 1

使用新类，将其命名为RegistrationDetails，并使其包含当前字符串以及Bitmap。只需传递该类的实例作为AsyncTask的唯一参数。

使用AsyncTask从ImageView上传带有字符串值的图像

1 个答案: