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Android™

Send a Staged Multipart REST Request

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Demonstrates Rest.SendReqMultipart, which sends a multipart request using the parts configured on the object, then reads the response in separate steps.

Background. The staged request model separates sending from reading: a SendReq method transmits the request, ReadResponseHeader reads the status line and headers, and a ReadResp method reads the body. This gives fine control over large or streamed messages compared with the single-call full-request methods.

Chilkat Android™ Downloads

Android™
// Important: Don't forget to include the call to System.loadLibrary
// as shown at the bottom of this code sample.
package com.test;

import android.app.Activity;
import com.chilkatsoft.*;

import android.widget.TextView;
import android.os.Bundle;

public class SimpleActivity extends Activity {

  private static final String TAG = "Chilkat";

  // Called when the activity is first created.
  @Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    boolean success = false;

    CkRest rest = new CkRest();
    boolean bTls = true;
    boolean bAutoReconnect = true;
    success = rest.Connect("example.com",443,bTls,bAutoReconnect);
    if (success == false) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    //  Configure one multipart part before sending.
    rest.put_PartSelector("1");
    rest.AddHeader("Content-Type","text/plain");
    rest.AddHeader("Content-Disposition","form-data; name=\"field1\"");
    success = rest.SetMultipartBodyString("value1");
    if (success == false) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    //  Send the multipart request using the configured parts.
    success = rest.SendReqMultipart("POST","/api/upload");
    if (success == false) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    //  After sending, read the response status line and header fields.  The return value is the HTTP
    //  status code, or -1 if no response was received.
    int statusCode = rest.ReadResponseHeader();
    if (statusCode < 0) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    Log.i(TAG, "Response status code: " + String.valueOf(statusCode));

    //  Read the response body as text.
    String responseBody = rest.readRespBodyString();
    if (rest.get_LastMethodSuccess() == false) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    Log.i(TAG, responseBody);

  }

  static {
      System.loadLibrary("chilkat");

      // Note: If the incorrect library name is passed to System.loadLibrary,
      // then you will see the following error message at application startup:
      //"The application <your-application-name> has stopped unexpectedly. Please try again."
  }
}