亚马逊网络服务MQTT

Question

我正在开发基于亚马逊的Web服务，我必须向Amazon IOT发送和接收一些信息，然后从那里收到一些消息。我在连接IOT时遇到问题，任何人都可以帮助我使用MQTT和IOT。

Answer 1

试试这个。它可能对你有所帮助。

credentialsProvider = new CognitoCachingCredentialsProvider(
            getApplicationContext(), // context
            COGNITO_POOL_ID, // Identity Pool ID
            MY_REGION // Region);

    Region region = Region.getRegion(MY_REGION);

    // MQTT Client
    mqttManager = new AWSIotMqttManager(clientId, CUSTOMER_SPECIFIC_ENDPOINT);

    // Set keepalive to 10 seconds.  Will recognize disconnects more quickly but will also send
    // MQTT pings every 10 seconds.
    mqttManager.setKeepAlive(10);
    mIotAndroidClient = new AWSIotClient(credentialsProvider);
    mIotAndroidClient.setRegion(region);
    try {
            mqttManager.connect(clientKeyStore, new AWSIotMqttClientStatusCallback() {
                @Override
                public void onStatusChanged(final AWSIotMqttClientStatus status,
                        final Throwable throwable) {
                    Log.d(LOG_TAG, "Status = " + String.valueOf(status));

                    runOnUiThread(new Runnable() {
                        @Override
                        public void run() {
                            if (status == AWSIotMqttClientStatus.Connecting) {
                                                               } else if (status == AWSIotMqttClientStatus.Connected) {
                                tvStatus.setText("Connected");

                            } else if (status == AWSIotMqttClientStatus.Reconnecting) {
                                if (throwable != null) {
                                    Log.e(LOG_TAG, "Connection error.", throwable);
                                }
                                tvStatus.setText("Reconnecting");
                            } else if (status == AWSIotMqttClientStatus.ConnectionLost) {
                                if (throwable != null) {
                                    Log.e(LOG_TAG, "Connection error.", throwable);
                                }
                                                                                    }
                        }
                    });
                }
            });
        } catch (final Exception e) {
                }