GCM getToken()在某些设备上发送java.io.IOException：TIMEOUT

概述我正在实现推送通知,但是在调用getToken时我收到了TIMEOUT异常.此问题仅在某些设备上发生,如SC-03D(4.0).这是我用来注册令牌的IntentService：publicclassRegistrationIntentServiceextendsIntentService{privatestaticfinalStringTAG="GCM";publicstaticfinal

我正在实现推送通知,但是在调用getToken时我收到了TIMEOUT异常.

此问题仅在某些设备上发生,如SC-03D(4.0).

这是我用来注册令牌的IntentService：

public class RegistrationIntentService extends IntentService {private static final String TAG = "GCM";public static final String TOKEN_ID = "registration_ID";/** * Constructor */public RegistrationIntentService() {    super(TAG);}@OverrIDeprotected voID onHandleIntent(Intent intent) {    try {        // In the (unlikely) event that multiple refresh operations occur simultaneously, ensure that they are processed sequentially.        synchronized (TAG) {            // Initially this call goes out to the network to retrIEve the token, subsequent calls are local.            InstanceID instanceID = InstanceID.getInstance(this);            String gcm_sender_ID = getString(R.string.gcm_sender_ID);            String token = instanceID.getToken(gcm_sender_ID, GoogleCloudMessaging.INSTANCE_ID_ScopE, null);            String storagetoken = PrefsHelper.getTokenID(this);            Log.d(TAG, "GCM Registration Token: " + token);        }    } catch (Exception e) {        Log.d(TAG, "Failed to complete token refresh", e);    }}

解决方法:

您需要尝试使用指数后退来注册令牌

以下代码可能对您有帮助

public class RegistrationIntentService extends IntentService {    private static final String TAG = "GCM";    public static final String TOKEN_ID = "registration_ID";    private final static int MAX_ATTEMPTS = 5;    private final static int BACKOFF_MILli_SECONDS = 2000;    /**     * Constructor     */    public RegistrationIntentService() {        super(TAG);    }    @OverrIDe    protected voID onHandleIntent(Intent intent) {            // In the (unlikely) event that multiple refresh operations occur simultaneously, ensure that they are processed sequentially.            synchronized (TAG) {                Random random = new Random();                String token = null;                InstanceID instanceID = InstanceID.getInstance(this);                long backoff = BACKOFF_MILli_SECONDS + random.nextInt(1000);                for (int i = 1; i <= MAX_ATTEMPTS; i++) {                    try {                        token = instanceID.getToken(getString(R.string.gcm_sender_ID);, GoogleCloudMessaging.INSTANCE_ID_ScopE, null);                        if(null != token && !token.isEmpty()) {                             break;                        }                    } catch (IOException e) {                        //Log exception                    }                    if (i == MAX_ATTEMPTS) {                            break;                        }                        try {                            Thread.sleep(backoff);                        } catch (InterruptedException e1) {                            break;                        }                    // increase backoff exponentially                    backoff *= 2;                }                // further processing for token goes here            }    }

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