Sample code for 30+ languages & platforms
Android™

Set a Multipart Part Body from a Stream

See more REST Examples

Demonstrates Rest.SetMultipartBodyStream, which uses a Stream as the body source for the selected multipart part.

The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background. Streaming a part body is appropriate for large parts because the data is read incrementally from the source rather than being buffered entirely in memory. The part is otherwise assembled the same way — select the part, set its headers, then set its body.

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;
        }

    //  The file paths are relative to the application's current working directory.  Absolute paths
    //  may also be used.  Supply the paths appropriate to your own environment.

    //  Select the multipart part to build, and set its header fields.
    rest.put_PartSelector("1");
    rest.AddHeader("Content-Disposition","form-data; name=\"field1\"");
    rest.AddHeader("Content-Type","application/octet-stream");

    //  Use a Stream as the body source for the selected part.  The stream's source is a local file,
    //  which is appropriate for large parts.
    CkStream partStream = new CkStream();
    partStream.put_SourceFile("qa_data/attachment.bin");
    success = rest.SetMultipartBodyStream(partStream);
    if (success == false) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    String responseText = rest.fullRequestMultipart("POST","/api/upload");
    if (rest.get_LastMethodSuccess() == false) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    Log.i(TAG, responseText);

  }

  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."
  }
}