Question

我已阅读此帖，但我仍面临类似的问题：

GoogleApiClient onConnected never called on Wearable device

我试着详细了解其工作原理： https://developer.android.com/training/wearables/data-layer/events.html

以下是我的代码：

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!");
...
}

我只有这个：

07-23 20:07:41.730 24874-24874 / virtualgs.phonewatch D /手表观看：On Create！ 07-23 20:07:41.772 24874-24874 / virtualgs.phonewatch D /手表观看：开始！

未连接已连接和其他日志消息。我错过了什么吗？

Answer 1

虽然您的活动实现了GoogleApiClient.ConnectionCallbacks和GoogleApiClient.OnConnectionFailedListener，但您从未将您的活动注册为侦听器以接收这些回调。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

1 个答案: