GoogleApiClient onConnected 未在 Watch 上调用

Question

我已经阅读了这个帖子，但我仍然遇到类似的问题：

GoogleApiClient onConnected never called on Wearable device

我试图准确地理解它是如何工作的： https://developer.android.com/training/wearables/data-layer/events.html

这是我的代码：

public class Main extends Activity implements DataApi.DataListener, GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
private static final String PATH = "/phonewatch";
private GoogleApiClient client;

@Override
protected void onCreate(Bundle savedInstanceState) {
    Log.d("phone watch", "On Create!");
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    client = new GoogleApiClient.Builder(this).addApi(Wearable.API).build();
    ...
}

@Override
protected void onStart() {
    Log.d("phone watch", "On Start!");

    super.onStart();
    client.connect();
}

@Override
protected void onStop() {
    Log.d("phone watch", "On Stop!");

    if (client != null && client.isConnected()) {
        Wearable.DataApi.removeListener(client, this);
        client.disconnect();
    }

    super.onStop();
}

@Override
public void onConnected(Bundle bundle) {
    Log.d("phone watch", "On connected! Add listener.");

    Wearable.DataApi.addListener(client, this);
}

@Override
public void onConnectionSuspended(int i) {
    Log.d("phone watch", "connection suspended.");
}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
    Log.d("phone watch", "connection failed.");
}

@Override
public void onDataChanged(final DataEventBuffer dataEventBuffer) {
    Log.d("phone watch", "Data changed!");
...
}

我只得到了这个：

07-23 20:07:41.730 24874-24874/virtualgs.phonewatch D/phone 观看：创建中！ 07-23 20:07:41.772 24874-24874/virtualgs.phonewatch D/phone 观看：开始！

已连接且未调用其他日志消息。我错过了什么吗？

Answer 1

尽管您的 activity 实现了 GoogleApiClient.ConnectionCallbacks 和 GoogleApiClient.OnConnectionFailedListener，但您从未将 activity 注册为接收这些回调的侦听器。在构建 api 客户端时，需要调用以下两个：addConnectionCallbacks(this) 和 addOnConnectionFailedListener(this):

client = new GoogleApiClient.Builder(this)
    .addApi(Wearable.API)
    .addConnectionCallbacks(this)
    .addOnConnectionFailedListener(this)
    .build();

GoogleApiClient onConnected 未在 Watch 上调用

GoogleApiClient onConnected not called on Watch

android

android-wear-data-api

wear-os