Android附近消息API发布';应为BEGIN_对象,但为字符串';
我正在尝试使用附近的示例并遵循以下链接: 我想订阅并发布一篇小文章。 所以我补充说:Android附近消息API发布';应为BEGIN_对象,但为字符串';,android,publish-subscribe,google-nearby,Android,Publish Subscribe,Google Nearby,我正在尝试使用附近的示例并遵循以下链接: 我想订阅并发布一篇小文章。 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.
private Message mActiveMessage;
private void publish(String message) {
Log.i(TAG, "Publishing message: " + message);
mActiveMessage = new Message(message.getBytes());
Nearby.Messages.publish(mGoogleApiClient, mActiveMessage);
}
然后单击按钮:
btnPublish.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
publish("Hello World");
}
});
并尝试在另一部手机上接收该信息。onFound:
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();
但我得到了一个错误:
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
我做错了什么?
因为我不认为我需要像这里建议的那样去解析它:
关于附近的另一个问题:
有可能只使用超声波对公共文本
感谢您抽出时间。删除此行:
mNearbyDevicesArrayAdapter.add(
DeviceMessage.fromNearbyMessage(message).getMessageBody());
DeviceMessage.fromNearbyMessage(message)
调用假定消息字节是JSON,并试图解析它,但您发布的消息不是JSON。删除此行:
mNearbyDevicesArrayAdapter.add(
DeviceMessage.fromNearbyMessage(message).getMessageBody());
DeviceMessage.fromNearbyMessage(message)
调用假定消息字节是JSON,并试图对其进行解析,但您发布的消息不是JSON