(Android™) WhatsApp - Send a Linked Media Message

Demonstrates how to send a media message where the media content is a link to an external URL. This example demonstrates sending an image (JPG) media message.

For more information, see https://developers.facebook.com/docs/whatsapp/api/messages/media

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);

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

    CkHttp http = new CkHttp();
    boolean success;

    // Implements the following CURL command:

    // curl -X POST https://example.com/v1/messages \
    //   -H "Authorization: Bearer your-auth-token" \
    //   -d '
    // {
    //     "recipient_type": "individual-or-group",
    //     "to": "whatsapp-id-or-group-id",
    //     "type": "image",
    //     "image": {
    //       "link": "http(s)://the-url",
    //       "provider": {
    //         "name" : "provider-name"
    //       },
    //     "caption": "your-image-caption"
    //   }
    // }'

    // Use the following online tool to generate HTTP code from a CURL command
    // Convert a cURL Command to HTTP Source Code

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

    // The following JSON is sent in the request body.

    // {
    //   "recipient_type": "individual-or-group",
    //   "to": "whatsapp-id-or-group-id",
    //   "type": "image",
    //   "image": {
    //     "link": "http(s)://the-url",
    //     "provider": {
    //       "name": "provider-name"
    //     },
    //     "caption": "your-image-caption"
    //   }
    // }

    CkJsonObject json = new CkJsonObject();
    json.UpdateString("recipient_type","individual-or-group");
    json.UpdateString("to","whatsapp-id-or-group-id");
    json.UpdateString("type","image");
    json.UpdateString("image.link","http(s)://the-url");
    json.UpdateString("image.provider.name","provider-name");
    json.UpdateString("image.caption","your-image-caption");

    // Adds the "Authorization: Bearer your-auth-token" header.
    http.put_AuthToken("your-auth-token");

    CkHttpResponse resp = http.PostJson3("https://example.com/v1/messages","application/json",json);
    if (http.get_LastMethodSuccess() == false) {
        Log.i(TAG, http.lastErrorText());
        return;
        }

    CkStringBuilder sbResponseBody = new CkStringBuilder();
    resp.GetBodySb(sbResponseBody);
    CkJsonObject jResp = new CkJsonObject();
    jResp.LoadSb(sbResponseBody);
    jResp.put_EmitCompact(false);

    Log.i(TAG, "Response Body:");
    Log.i(TAG, jResp.emit());

    int respStatusCode = resp.get_StatusCode();
    Log.i(TAG, "Response Status Code = " + String.valueOf(respStatusCode));
    if (respStatusCode >= 400) {
        Log.i(TAG, "Response Header:");
        Log.i(TAG, resp.header());
        Log.i(TAG, "Failed.");

        return;
        }

    // Sample JSON response:
    // (Sample code for parsing the JSON response is shown below)

    // {
    //   "messages": [
    //     {
    //       "id": "gBEGkYiEB1VXAglK1ZEqA1YKPrU"
    //     }
    //   ]
    // }

    // Sample code for parsing the JSON response...
    // Use the following online tool to generate parsing code from sample JSON:
    // Generate Parsing Code from JSON

    String id;

    int i = 0;
    int count_i = jResp.SizeOfArray("messages");
    while (i < count_i) {
        jResp.put_I(i);
        id = jResp.stringOf("messages[i].id");
        i = i + 1;
        }


  }

  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."
  }
}