Android™ GMail: Lists the messages in the user's mailbox.

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Lists the messages in the user's mailbox.

Documentation: https://developers.google.com/gmail/api/v1/reference/users/messages/list

// 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);

    CkRest rest = new CkRest();
    boolean success;

    //   Provide a previously obtained OAuth2 access token.
    CkOAuth2 oauth2 = new CkOAuth2();
    oauth2.put_AccessToken("OAUTH2_ACCESS_TOKEN");
    rest.SetAuthOAuth2(oauth2);

    success = rest.Connect("www.googleapis.com",443,true,true);
    if (success != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    CkStringBuilder sbJson = new CkStringBuilder();
    success = rest.FullRequestNoBodySb("GET","/gmail/v1/users/me/messages",sbJson);
    if (success != true) {
        Log.i(TAG, rest.lastErrorText());
        return;
        }

    if (rest.get_ResponseStatusCode() != 200) {
        Log.i(TAG, "Received error response code: " + String.valueOf(rest.get_ResponseStatusCode()));
        Log.i(TAG, "Response body:");
        Log.i(TAG, sbJson.getAsString());
        return;
        }

    CkJsonObject json = new CkJsonObject();
    json.LoadSb(sbJson);

    //  The following code parses the JSON response.
    //  A sample JSON response is shown below the sample code.
    int resultSizeEstimate;
    int i;
    int count_i;
    String id;
    String threadId;

    resultSizeEstimate = json.IntOf("resultSizeEstimate");
    i = 0;
    count_i = json.SizeOfArray("messages");
    while (i < count_i) {
        json.put_I(i);
        id = json.stringOf("messages[i].id");
        threadId = json.stringOf("messages[i].threadId");
        i = i + 1;
        }

    Log.i(TAG, "Example Completed.");

  }

  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."
  }
}

Sample JSON Response Body

{
  "messages": [
    {
      "id": "15fc237e79da4174",
      "threadId": "15fc237e79da4174"
    },
    {
      "id": "15fc23688c553739",
      "threadId": "15fc23688c553739"
    },
    {
      "id": "15fbd37d3a8f9950",
      "threadId": "15fbd37d3a8f9950"
    },
    {
      "id": "15fb5e49b822ac1d",
      "threadId": "15fb5e49b822ac1d"
    },
    {
      "id": "15fb5e49b7a0739b",
      "threadId": "15fb5e49b7a0739b"
    }
  ],
  "resultSizeEstimate": 5
}