我一直在关注 本教程 从安卓穿戴设备向安卓手机发送消息,但它不工作。这是我的代码。
Wear
首先,在Minifest中,我实现了google play服务的元数据,像这样。
<meta-data
android:name="com.google.android.wearable.standalone"
android:value="true" />
<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
其次,我初始化了GoogleApiClient,像这样。
googleClient = new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
然后,我实现了所有接口中需要的方法: GoogleApiClient.ConnectionCallbacks和GoogleApiClient.OnConnectionFailedListener, 像这样:
@Override
public void onConnected(Bundle connectionHint) {
System.out.println("SESSION CONNECTED");
}
// Disconnect from the data layer when the Activity stops
@Override
protected void onStop() {
if (null != googleClient && googleClient.isConnected()) {
googleClient.disconnect();
}
super.onStop();
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
protected void onStart() {
super.onStart();
googleClient.connect();
}
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
System.out.println("FAILED TO CONNECT: "+connectionResult.getErrorMessage());
}
最后,我实现了向手机发送文本的功能。
NodeApi.GetConnectedNodesResult nodes = Wearable.NodeApi.getConnectedNodes(googleClient).await();
for (Node node : nodes.getNodes()) {
MessageApi.SendMessageResult result = Wearable.MessageApi.sendMessage(googleClient, node.getId(), path, message.getBytes()).await();
if (result.getStatus().isSuccess()) {
System.out.println("Message: {" + message + "} sent to: " + node.getDisplayName());
}
else {
// Log an error
System.out.println("ERROR: failed to send Message");
}
}
事情是这样的(当我开始穿戴时,我得到了""SESSION CONNECTED "字符串),但它找不到任何配对的设备来发送字符串,因为节点列表是空的。这是否是模拟器的问题?手机和穿戴设备可能都没有同步,因此它们无法找到对方。
手机
为了展示这个洞的例子,我还包括了手机部分。
Manifest.xml
<service android:name=".utils.ListenerService">
<intent-filter>
<action android:name="com.google.android.gms.wearable.BIND_LISTENER"
tools:ignore="WearableBindListener" />
</intent-filter>
</service>
监听者服务
public class ListenerService extends WearableListenerService {
@Override
public void onMessageReceived(MessageEvent messageEvent) {
if (messageEvent.getPath().equals("/message_path")) {
final String message = new String(messageEvent.getData());
System.out.println("Message path received on watch is: " + messageEvent.getPath());
System.out.println("Message received on watch is: " + message);
}
else {
super.onMessageReceived(messageEvent);
}
}
好吧,nevermind,这是一个与模拟器的问题,他们不是sycned。只是尝试与真正的设备,它的工作。