检测何时可穿戴连接/断开与Android手机的连接 [英] Detect when wearable connected/disconnected to/from Android phone

问题描述

Pebble手表有一个Intent，当Pebble连接/断开连接时，全局被发送。这允许手机应用程序知道手表是否连接。
我搜索过，但我无法找到有关Android Wear类似功能的信息。
如何知道穿戴者是否连接到手机？有可能收到像卵石一样的事件吗？
感谢

解决方案

您可以通过扩展WearableListenerService并覆盖onConnectedNodes（）方法来轻松实现。

可穿戴端

  public class DisconnectListenerService extends WearableListenerService implements GoogleApiClient.ConnectionCallbacks {
 
 / *手机应用程序提供的功能* / 
 private static final String CONNECTION_STATUS_CAPABILITY_NAME =is_connection_lost; 
 
私人GoogleApiClient mGoogleApiClient; 
 
 @Override 
 public void onCreate（）{
 super.onCreate（）; 
 mGoogleApiClient = new GoogleApiClient.Builder（this）
 .addApi（Wearable.API）
 .addConnectionCallbacks（this）
 .build（）; 
 
 
 @Override 
 public void onConnectedNodes（List&Node> connectedNodes）{
 if（mGoogleApiClient.isConnected（））{
 updateStatus（） ; 
} else if（！mGoogleApiClient.isConnecting（））{
 mGoogleApiClient.connect（）; 
} 
} 
 
 private void updateStatus（）{
 Wearable.CapabilityApi.getCapability（
 mGoogleApiClient，CONNECTION_STATUS_CAPABILITY_NAME，
 CapabilityApi.FILTER_REACHABLE） .setResultCallback（
 new ResultCallback&CapabilityApi.GetCapabilityResult>（）{
 @Override 
 public void onResult（CapabilityApi.GetCapabilityResult result）{
 if（result.getStatus（）。isSuccess （））{
 updateConnectionCapability（result.getCapability（））; 
} else {
 Log.e（TAG，无法获取功能，+status：+ result.getStatus （）.getStatusMessage（））; 
} 
} 
}）; 
} 
 
 private void updateConnectionCapability（CapabilityInfo capabilityInfo）{
 Set< Node> connectedNodes = capabilityInfo.getNodes（）; 
 if（connectedNodes.isEmpty（））{
 //连接丢失！ 
} else {
 for（Node node：connectedNodes）{
 if（node.isNearby（））{
 //连接正常！ 
} 
} 
} 
} 
 
 @Override 
 public void onConnected（Bundle bundle）{
 updateStatus（）; 
} 
 
 @Override 
 public void onConnectionSuspended（int cause）{
 
} 
 
 @Override 
 public void onDestroy（）{
 if（mGoogleApiClient.isConnected（）|| mGoogleApiClient.isConnecting（））{
 mGoogleApiClient.disconnect（）; 
} 
 super.onDestroy（）; 
} 
} 
  

电话端 p>

在名为wear.xml的值/目录中创建一个xml文件

  ;资源> 
< string-array name =android_wear_capabilities> 
< item> is_connection_lost< / item> 
< / string-array> 
< / resources> 
  

有关更多信息，请在此堆栈溢出问题

The Pebble watch has a Intent that is globally sended when the Pebble is connected/disconnected. This allow the phone apps to know if the watch is connected or not. I have searched but I'm not capable to locate info about a similar feature for Android Wear. How know if a wearable is connected to the phone? Is possible to receive a event like with Pebble? Thanks

解决方案

You can easily do this by extends the WearableListenerService and override onConnectedNodes() method.

Wearable Side

public class DisconnectListenerService extends WearableListenerService implements GoogleApiClient.ConnectionCallbacks {

/* the capability that the phone app would provide */
private static final String CONNECTION_STATUS_CAPABILITY_NAME = "is_connection_lost";

private GoogleApiClient mGoogleApiClient;

@Override
public void onCreate() {
    super.onCreate();
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addApi(Wearable.API)
            .addConnectionCallbacks(this)
            .build();
}

@Override
public void onConnectedNodes(List<Node> connectedNodes) {
    if (mGoogleApiClient.isConnected()) {
        updateStatus();
    } else if (!mGoogleApiClient.isConnecting()) {
        mGoogleApiClient.connect();
    }
}

private void updateStatus() {
    Wearable.CapabilityApi.getCapability(
            mGoogleApiClient, CONNECTION_STATUS_CAPABILITY_NAME,
            CapabilityApi.FILTER_REACHABLE).setResultCallback(
            new ResultCallback<CapabilityApi.GetCapabilityResult>() {
                @Override
                public void onResult(CapabilityApi.GetCapabilityResult result) {
                    if (result.getStatus().isSuccess()) {
                        updateConnectionCapability(result.getCapability());
                    } else {
                        Log.e(TAG, "Failed to get capabilities, " + "status: " + result.getStatus().getStatusMessage());
                    }
                }
            });
}

private void updateConnectionCapability(CapabilityInfo capabilityInfo) {
    Set<Node> connectedNodes = capabilityInfo.getNodes();
    if (connectedNodes.isEmpty()) {
        // The connection is lost !
    } else {
        for (Node node : connectedNodes) {
            if (node.isNearby()) {
                // The connection is OK !
            }
        }
    }
}

@Override
public void onConnected(Bundle bundle) {
    updateStatus();
}

@Override
public void onConnectionSuspended(int cause) {

}

@Override
public void onDestroy() {
    if (mGoogleApiClient.isConnected() || mGoogleApiClient.isConnecting()) {
        mGoogleApiClient.disconnect();
    }
    super.onDestroy();
    }
}

Phone Side

create a xml file in values/ directory named wear.xml

<resources>
    <string-array name="android_wear_capabilities">
        <item>is_connection_lost</item>
    </string-array>
</resources>

For more, checkout the my solution in this Stack Overflow Question

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