Android中的信标-教程中的错误

Question

我目前正在使用Android Beacons教程 ，并且代码似乎有问题。 该方法直接从教程中复制而来，但是build()方法后缺少右括号。 我尝试了不同的解决方案，但到目前为止没有成功。

private void subscribe() {
    if (mSubscribed) {
        Log.i(TAG, "Already subscribed.");
        return;
    }

    SubscribeOptions options = new SubscribeOptions.Builder()
            .setStrategy(Strategy.BLE_ONLY)
            // Note: If no filter is specified, Nearby will return all of your
            // attachments regardless of type. You must use a filter to specify
            // a particular set of attachments (by type) or to fetch attachments
            // in a namespace other than your project's default.
            .setFilter(new MessageFilter.Builder()
                .includeNamespacedType("some_namespace", "some_type")
            .build();

    Nearby.Messages.subscribe(mGoogleApiClient, getPendingIntent(), options)
            .setResultCallback(new ResultCallback<Status>() {
                @Override
                public void onResult(@NonNull Status status) {
                    if (status.isSuccess()) {
                        Log.i(TAG, "Subscribed successfully.");
                        startService(getBackgroundSubscribeServiceIntent());
                    } else {
                        Log.e(TAG, "Operation failed. Error: " +
                                NearbyMessagesStatusCodes.getStatusCodeString(
                                        status.getStatusCode()));
                    }
                }
            });
}

感谢您的帮助或建议。

Answer 1

我认为应该有两个build()调用，一个是MessageFilter.Builder调用，一个是SubscribeOptions.Builder调用。

尝试这个：

    SubscribeOptions options = new SubscribeOptions.Builder()
        .setStrategy(Strategy.BLE_ONLY)
        // Note: If no filter is specified, Nearby will return all of your
        // attachments regardless of type. You must use a filter to specify
        // a particular set of attachments (by type) or to fetch attachments
        // in a namespace other than your project's default.
        .setFilter(new MessageFilter.Builder()
            .includeNamespacedType("some_namespace", "some_type")
            .build())
        .build();

Answer 2

它适用于具有“无法解析方法订阅...”的人

谢谢提琴手!!!!!!

 SubscribeOptions options = new SubscribeOptions.Builder()
    .setStrategy(Strategy.BLE_ONLY)
    // Note: If no filter is specified, Nearby will return all of your
    // attachments regardless of type. You must use a filter to specify
    // a particular set of attachments (by type) or to fetch attachments
    // in a namespace other than your project's default.
    .setFilter(new MessageFilter.Builder()
        .includeNamespacedType("some_namespace", "some_type")
        .build())
    .build();