Android™

SharePoint OAuth2 Client Credentials Authentication

Demonstrates how to authenticate with OAuth 2.0 using the client credentials grant type. This is for SharePoint Online which is the cloud-based service provided by Microsoft as part of Office 365. (Users access SharePoint Online through a web browser, and the service is hosted on Microsoft's servers.) 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;

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

    CkHttp http = new CkHttp();

    // Provide the information needed for Chilkat to automatically fetch the OAuth2.0 
    // access token as needed.
    CkJsonObject jsonOAuthCC = new CkJsonObject();

    // --------------------------------------------------------------------------------------------------------
    // You'll need to have registered an app in Azure beforehand.
    // See How to Create SharePoint App Registration for OAuth 2.0 Client Credentials
    // --------------------------------------------------------------------------------------------------------

    // Use the values from your App Registration in Azure.
    jsonOAuthCC.UpdateString("client_id","CLIENT_ID");
    jsonOAuthCC.UpdateString("client_secret","SECRET_VALUE");

    // You'll always use this scope for client credentials, because the allowed actions
    // are determined by the App Permissions defined when you registered the app in Azure.
    jsonOAuthCC.UpdateString("scope","https://graph.microsoft.com/.default");

    // The token endpoint includes your tenant ID. 
    jsonOAuthCC.UpdateString("token_endpoint","https://login.microsoftonline.com/TENANT_ID/oauth2/v2.0/token");

    // Provide the OAuth2 information. Chilkat will use this information to automatically fetch the OAuth2 access token as needed,
    http.put_AuthToken(jsonOAuthCC.emit());

    // Get information about all SharePoint sites.
    CkStringBuilder sbJson = new CkStringBuilder();
    success = http.QuickGetSb("https://graph.microsoft.com/v1.0/sites/getAllSites",sbJson);
    if (success == false) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    int statusCode = http.get_LastStatus();

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

    if (statusCode != 200) {
        Log.i(TAG, sbJson.getAsString());
        Log.i(TAG, "Failed.");
        return;
        }

    CkJsonObject jsonResp = new CkJsonObject();
    jsonResp.LoadSb(sbJson);
    jsonResp.put_EmitCompact(false);

    Log.i(TAG, jsonResp.emit());
    Log.i(TAG, "Success.");

    // Use this online tool to generate parsing code from sample JSON: 
    // Generate Parsing Code from JSON

  }

  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."
  }
}