我创建了一个带有Activity的移动应用程序，该应用程序将数据发送到磨损状态。移动应用程序端代码如下
请注意我删除了一些代码以减少行数。
public class MainActivity extends AppCompatActivity implements
GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener {
GoogleApiClient mGoogleClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Build a new GoogleApiClient for the the Wearable API
mGoogleClient = new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
Button sendBtn = (Button) findViewById(R.id.send_btn);
sendBtn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (mGoogleClient.isConnected()) {
Log.w("mobile-p", "connected.....sending data");
sendData();
}
}
});
}
// Connect to the data layer when the Activity starts
@Override
protected void onStart() {
super.onStart();
mGoogleClient.connect();
}
private void constructDataI temsForNotification() {
//I construct the dataItems here which needs to be passed to the wear
//and call the sendata.
sendData();
}
private void sendData() {
//Requires a new thread to avoid blocking the UI
if (mDataMapList != null && mDataMapList.size() > 0 ) {
new SendToDataLayerThread().start();
} else {
Log.w("mobile", "Nothing to notify");
}
}
@Override
public void onConnected(Bundle connectionHint) {
}
// Disconnect from the data layer when the Activity stops
@Override
protected void onStop() {
if (null != mGoogleClient && mGoogleClient.isConnected()) {
mGoogleClient.disconnect();
}
super.onStop();
}
// Placeholders for required connection callbacks
@Override
public void onConnectionSuspended(int cause) {
if (mGoogleClient != null) {
mGoogleClient.reconnect();
}
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) { }
//Use thread or asynctask.
class SendToDataLayerThread extends Thread {
public void run() {
// Construct a DataRequest and send over the data layer
PutDataMapRequest putDMR = PutDataMapRequest.create("/weardatapath");
putDMR.getDataMap().putDataMapArrayList("/weardatapath", mDataMapList);
PutDataRequest request = putDMR.asPutDataRequest();
DataApi.DataItemResult result = Wearable.DataApi.putDataItem(mGoogleClient, request).await();
if (result.getStatus().isSuccess()) {
for (DataMap mapItem : mDataMapList) {
Log.v("mobile-p", "DataMap: " + mapItem + " sent successfully to data layer ");
}
} else {
// Log an error
Log.v("mobile-p", "ERROR: failed to send DataMap to data layer");
}
}
}
}
在Wear应用方面，我创建了 PhoneListenerService ，如下所示
public class PhoneListenerService extends WearableListenerService {
@Override
public void onDataChanged(DataEventBuffer dataEvents) {
DataMap dataMap;
for (DataEvent event : dataEvents) {
Log.v("Wear-W", "DataMap received on watch: " + DataMapItem.fromDataItem(event.getDataItem()).getDataMap());
// Check the data type
if (event.getType() == DataEvent.TYPE_CHANGED) {
// Check the data path
String path = event.getDataItem().getUri().getPath();
if (path.equals("/weardatapath")) {
DataMapItem dataMapItem = DataMapItem.fromDataItem(event.getDataItem());
ArrayList<DataMap> dataItems = dataMapItem.getDataMap().getDataMapArrayList
("dataMapItems");
// Broadcast DataMap contents to wearable show in notification..
if (dataItems != null && dataItems.size() > 0) {
for (DataMap item : dataItems) {
........
}
}
}
}
}
}
}
以上代码运行正常。每当我从mobileApp发送MainActivity数据时，我都会在PhoneListenerService的Wear应用程序中收到它。
//////////////////////////////////////////// ////////////////////////////////////////////////// ////////////////////////////////////////////////// ////////////
根据收到的数据，我在Wear应用程序上构建通知，并对我想要通知移动应用程序的通知采取的每个操作。为此，我在Wear应用程序上创建了PhoneSyncService，它将通知移动应用程序所采取的操作..
public class PhoneSyncService extends IntentService implements
GoogleApiClient.OnConnectionFailedListener, GoogleApiClient.ConnectionCallbacks{
private static final String "wearsrvc-w" = "PhoneSyncService-W";
public static final String ACTION_REPLY = "com.test.mobilewearsample.action.REPLY";
GoogleApiClient mGoogleClient;
public PhoneSyncService() {
super("PhoneSyncService");
}
@Override
public void onCreate() {
super.onCreate();
mGoogleClient = new GoogleApiClient.Builder(this)
.addApi(Wearable.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this)
.build();
}
@Override
public void onDestroy() {
if (null != mGoogleClient && mGoogleClient.isConnected()) {
mGoogleClient.disconnect();
}
super.onDestroy();
}
@Override
protected void onHandleIntent(Intent intent) {
if (intent != null) {
final String action = intent.getAction();
Log.w("wearsrvc-w", "ACTION : "+action);
if (ACTION_REPLY.equals(action)) {
final String uId = intent.getStringExtra("dataId");
notifyHandheldDevice(uId);
}
}
}
private void notifyHandheldDevice(String uId) {
Log.v("wearsrvc-w", "in notify to handheld device :"+uId);
if (mGoogleClient.isConnected()) {
DataMap dataMap = new DataMap();
dataMap.putInt("uId", Integer.valueOf(uId));
PutDataMapRequest putDMR = PutDataMapRequest.create("/mobiledatapath");
putDMR.getDataMap().putAll(dataMap);
PutDataRequest request = putDMR.asPutDataRequest();
DataApi.DataItemResult result = Wearable.DataApi.putDataItem(mGoogleClient, request).await();
if (result.getStatus().isSuccess()) {
Log.v("wearsrvc-w" , "Wear DataMap: " + dataMap + " sent successfully to data layer ");
} else {
// Log an error
Log.v("wearsrvc-w" , "ERROR: failed to send DataMap to data layer");
}
}
Log.v("wearsrvc-w", "done notify to handheld device :"+uId);
}
@Override
public void onConnected(Bundle bundle) {
}
@Override
public void onConnectionSuspended(int i) {
}
@Override
public void onConnectionFailed(ConnectionResult connectionResult) {
}
}
要将磨损应用程序发送到移动应用程序的数据，我在移动应用程序上创建了一个WearDataListenerService，下面是代码。
public class WearDataListenerService extends WearableListenerService {
private static final String TAG = "WearDataLstrService-M";
@Override
public void onDataChanged(DataEventBuffer dataEvents) {
for (DataEvent event : dataEvents) {
Log.v(TAG, "DataMap received on mobile: " + DataMapItem.fromDataItem(event.getDataItem()).getDataMap());
// Check the data type
Log.v(TAG, "event type :"+event.getType());
if (event.getType() == DataEvent.TYPE_CHANGED) {
// Check the data path
String path = event.getDataItem().getUri().getPath();
if (path.equals("/mobiledatapath")) {
DataMap dataMap = DataMapItem.fromDataItem(event.getDataItem()).getDataMap();
int uId = dataMap.getInt("dataId");
Log.v(TAG, "action received for uId :"+uId);
}
}
}
}
}
当我做了上述更改时，我开始看到一个奇怪的问题。当我尝试将数据从移动应用程序发送到磨损应用程序时，数据仅在移动应用程序端的 WearDataListenerService 上接收，并且未在磨损应用程序端接收。 就像移动应用程序发送的数据一样，在移动应用程序WearableListenerService上收到，而不是在应用程序上收到。
有人可以帮帮我吗。
答案 0 :(得分：1)
您的移动侦听器服务包含以下行：
if (path.equals("/mobiledatapath")) {}
我认为你过早关闭了这个区块;你的意思是：
if (path.equals("/mobiledatapath")) {
// rest of that code
}
您的移动端正在添加/更改数据，因此 ANY 节点可以接收回调，包括移动设备，这就是您的移动设备收到它的原因（并且由于您的错误if子句，它没有被过滤掉）。至于另一部分，您在数据中发送的有效负载是什么（mDataMapList）？多次尝试是一样的，还是每次都改变？有两个可能的原因：