(Android™) Create a File in a Folder

Creates (uploads) a file to be located in a particular folder.

See Google Drive Files: create for more details.

Also See Google Drive Multipart Upload for more details.

Chilkat Android™ Downloads Android™ Java Libraries Android C/C++ Libraries

// 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 = true;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    // This example uses a previously obtained access token having permission for the 
    // Google Drive scope.

    CkAuthGoogle gAuth = new CkAuthGoogle();
    gAuth.put_AccessToken("GOOGLE-DRIVE-ACCESS-TOKEN");

    CkRest rest = new CkRest();

    // Connect using TLS.
    boolean bAutoReconnect = true;
    success = rest.Connect("www.googleapis.com",443,true,bAutoReconnect);

    // Provide the authentication credentials (i.e. the access token)
    rest.SetAuthGoogle(gAuth);

    // -------------------------------------------------------------------------
    // A multipart upload to Google Drive needs a multipart/related Content-Type
    rest.AddHeader("Content-Type","multipart/related");

    // Specify each part of the request.

    // The 1st part is JSON with information about the file.
    rest.put_PartSelector("1");
    rest.AddHeader("Content-Type","application/json; charset=UTF-8");

    CkJsonObject json = new CkJsonObject();
    json.AppendString("name","testHello.txt");
    json.AppendString("description","A simple file that says Hello World.");
    json.AppendString("mimeType","text/plain");

    // To place the file in a folder, we must add a parents[] array to the JSON
    // and list the folder id's.  It's possible for a file to be in multiple folders at once
    // if it has more than one parent.  If no parents are specified, then the file is created
    // in the My Drive folder.  
    // Note: We'll assume we already have the id if the folder.  It is the id's that are specified here,
    // not the folder names.
    CkJsonArray parents = json.AppendArray("parents");
    String folderId = "0B53Q6OSTWYolY2tPU1BnYW02T2c";
    parents.AddStringAt(-1,folderId);

    rest.SetMultipartBodyString(json.emit());

    // The 2nd part is the file content, which will contain "Hello World!"
    rest.put_PartSelector("2");
    rest.AddHeader("Content-Type","text/plain");

    String fileContents = "Hello World!";
    rest.SetMultipartBodyString(fileContents);

    String jsonResponse = rest.fullRequestMultipart("POST","/upload/drive/v3/files?uploadType=multipart");
    if (rest.get_LastMethodSuccess() != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    // A successful response will have a status code equal to 200.
    if (rest.get_ResponseStatusCode() != 200) {
        Log.i(TAG, "response status code = " + String.valueOf(rest.get_ResponseStatusCode()));
        Log.i(TAG, "response status text = " + rest.responseStatusText());
        Log.i(TAG, "response header: " + rest.responseHeader());
        Log.i(TAG, "response JSON: " + jsonResponse);
        return;
        }

    // Show the JSON response.
    json.Load(jsonResponse);

    // Show the full JSON response.
    json.put_EmitCompact(false);
    Log.i(TAG, json.emit());

    // A successful response looks like this:
    // {
    //   "kind": "drive#file",
    //   "id": "0B53Q6OSTWYoldmJ0Z3ZqT2x5MFk",
    //   "name": "Untitled",
    //   "mimeType": "text/plain"
    // }

    // Get the fileId:
    Log.i(TAG, "fileId: " + json.stringOf("id"));

  }

  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."
  }
}