Android Nearby Messages API发布'Expected BEGIN_OBJECT but was STRING'-Java 学习之路

我正在尝试使用附近的示例，请点击此链接：https://developers.google.com/nearby/messages/android/pub-sub

我想订阅并发布一个小文本 . 所以我补充说：

private Message mActiveMessage;

private void publish(String message) {
    Log.i(TAG, "Publishing message: " + message);
    mActiveMessage = new Message(message.getBytes());
    Nearby.Messages.publish(mGoogleApiClient, mActiveMessage);
}

并点击按钮：

btnPublish.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            publish("Hello World");
        }
    });

并尝试在其他手机上接收它：

public void onFound(final Message message) {
            // Called when a new message is found.
            mNearbyDevicesArrayAdapter.add(
                    DeviceMessage.fromNearbyMessage(message).getMessageBody());

            String messageAsString = new String(message.getContent());
            Log.d(TAG, "Found message: " + messageAsString);
            Toast.makeText(getBaseContext(), messageAsString, Toast.LENGTH_LONG).show();

但我得到错误：

E/AndroidRuntime: FATAL EXCEPTION: main 
gms.nearby.messages.samples.nearbydevices, PID: 733
com.google.gson.JsonSyntaxException: 
java.lang.IllegalStateException: 
Expected BEGIN_OBJECT but was STRING at line 1

我做错事情了？因为我不认为我需要去解析它像这里建议的那样：GSON: Expected BEGIN_OBJECT but was STRING

关于附近的另一个问题：可以只使用超声波公共文本吗？

感谢您的时间 .

1 回答

4
删除此行：
```
mNearbyDevicesArrayAdapter.add(
        DeviceMessage.fromNearbyMessage(message).getMessageBody());
```
DeviceMessage.fromNearbyMessage(message) 调用假设消息字节是JSON并且正在尝试解析它，但您发布的消息不是JSON .
回复于 2024-05-02T09:31:43+08:00

Android Nearby Messages API发布'Expected BEGIN_OBJECT but was STRING'

1 回答

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