Android™

Find a Label ID by Name

See more GMail REST API Examples

Lookup the ID of a GMail label by the label name. 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 example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    CkHttp http = new CkHttp();
    http.put_AuthToken("GMAIL-ACCESS-TOKEN");

    String userId = "me";
    http.SetUrlVar("userId",userId);

    String url = "https://www.googleapis.com/gmail/v1/users/{$userId}/labels";

    // Get the list of GMail labels as JSON.
    CkStringBuilder sb = new CkStringBuilder();
    success = http.QuickGetSb(url,sb);
    if (success != true) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    CkJsonObject json = new CkJsonObject();
    json.LoadSb(sb);
    json.put_EmitCompact(false);
    Log.i(TAG, json.emit());

    if (http.get_LastStatus() != 200) {
        Log.i(TAG, "Failed.");
        return;
        }

    // The JSON returned looks like this:
    // {
    //   "labels": [
    //     {
    //       "id": "Label_5",
    //       "name": "QA",
    //       "messageListVisibility": "show",
    //       "labelListVisibility": "labelShow",
    //       "type": "user"
    //     },
    //     {
    //       "id": "Label_21",
    //       "name": "[Gmail]/testFolder",
    //       "type": "user"
    //     },
    //     {
    //       "id": "CATEGORY_PERSONAL",
    //       "name": "CATEGORY_PERSONAL",
    //       "type": "system"
    //     },
    // 	...

    // The name of the label is generally known because it's what we visually see.
    // The id is what we need to get.  Assuming the name is unique,
    // find the JSON record having name=<desired name>
    // For example...
    CkJsonObject jRecord = json.FindRecord("labels","name","QA",false);
    if (json.get_LastMethodSuccess() == true) {
        Log.i(TAG, "The id of QA is: " + jRecord.stringOf("id"));

        }

    jRecord = json.FindRecord("labels","name","[Gmail]/testFolder",false);
    if (json.get_LastMethodSuccess() == true) {
        Log.i(TAG, "The id of [Gmail]/testFolder is: " + jRecord.stringOf("id"));

        }

    jRecord = json.FindRecord("labels","name","questions",false);
    if (json.get_LastMethodSuccess() == true) {
        Log.i(TAG, "The id of questions is: " + jRecord.stringOf("id"));

        }

    // Output:

    // The id of QA is: Label_5
    // The id of [Gmail]/testFolder is: Label_21
    // The id of questions is: Label_43

  }

  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."
  }
}