我创建了一个类和一个 BroadcastReceiver 来从感知 api 获取回调，以便在步行或跑步结束时进行。我没有得到及时的回拨，起初以为是因为我注册了一个“停止”回拨，但是在将手机放下一段时间后，我确实收到了几个回拨！但这离我停止走路的时间还很远。停止后至少 5 分钟。有时即使 Google Fit 应用程序记录活动，我也不会收到回调。
因为我至少收到过几次回电，所以我知道注册没问题。为什么电话会延迟，有时甚至会丢失？
作为背景参考，我在主活动的 onStart 中注册了这些回调，即那时在活动的 onstart 中调用了initialAwareness。而且我从不注销它们。我不打算在生产中以这种方式使用它，它只是为了测试。另外，我最初尝试使用应用程序上下文注册栅栏失败了。
这是我为设置谷歌客户端和围栏的注册而制作的助手类。
public class AwarenessHelper {
public static final String WALKING_ENDED_FENCE = "walkingEndedKey";
public static final String RUNNING_ENDED_FENCE = "runningEndedKey";
public static final String TYPE_2_WALKING = "duringWalkingKey";
public static final String TYPE_2_RUNNING = "duringRunningKey";
private String tag = AwarenessHelper.class.getSimpleName();
public void initiateAwareness(final Activity context)
{
final GoogleApiClient googleApiClient = buildClient(context);
Log.d(tag, "Initiating blocking connect");
googleApiClient.registerConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
@Override
public void onConnected(@Nullable Bundle bundle) {
if ( googleApiClient.isConnected() )
{
Log.d(tag, "Client connected, initiating awareness fence registration");
registerAwarenessFences(context, googleApiClient);
}
else
{
Log.d(tag, "Couldn't connect");
}
}
@Override
public void onConnectionSuspended(int i) {
}
});
googleApiClient.connect();
}
private void registerAwarenessFences(Context context, GoogleApiClient mGoogleApiClient) {
Awareness.FenceApi.updateFences(
mGoogleApiClient,
new FenceUpdateRequest.Builder()
.addFence(WALKING_ENDED_FENCE, DetectedActivityFence.stopping(DetectedActivityFence.WALKING), getBroadcastPendingIntent(context))
.addFence(RUNNING_ENDED_FENCE, DetectedActivityFence.stopping(DetectedActivityFence.RUNNING), getBroadcastPendingIntent(context))
.addFence(TYPE_2_WALKING, DetectedActivityFence.during(DetectedActivityFence.WALKING), getBroadcastPendingIntent(context))
.addFence(TYPE_2_RUNNING, DetectedActivityFence.stopping(DetectedActivityFence.RUNNING), getBroadcastPendingIntent(context))
.build())
.setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
if (status.isSuccess()) {
Log.i(tag, "Fence was successfully registered.");
} else {
Log.e(tag, "Fence could not be registered: " + status);
}
}
});
}
private GoogleApiClient buildClient(final Activity activity)
{
GoogleApiClient client = new GoogleApiClient.Builder(activity)
.addApi(Awareness.API)
.addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
if ( connectionResult.hasResolution() && connectionResult.getErrorCode() == CommonStatusCodes.SIGN_IN_REQUIRED )
{
try {
connectionResult.startResolutionForResult(activity, GOOGLE_FIT_AUTHORIZATION_REQUEST_CODE);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
}
}
})
.build();
return client;
}
private PendingIntent getBroadcastPendingIntent(Context context)
{
Intent intent = new Intent(AWARENESS_BROADCAST_ACTION);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
return pendingIntent;
}
}
这是广播接收器：
public class AwarenessHelper {
public static final String WALKING_ENDED_FENCE = "walkingEndedKey";
public static final String RUNNING_ENDED_FENCE = "runningEndedKey";
public static final String TYPE_2_WALKING = "duringWalkingKey";
public static final String TYPE_2_RUNNING = "duringRunningKey";
private String tag = AwarenessHelper.class.getSimpleName();
public void initiateAwareness(final Activity context)
{
final GoogleApiClient googleApiClient = buildClient(context);
Log.d(tag, "Initiating blocking connect");
googleApiClient.registerConnectionCallbacks(new GoogleApiClient.ConnectionCallbacks() {
@Override
public void onConnected(@Nullable Bundle bundle) {
if ( googleApiClient.isConnected() )
{
Log.d(tag, "Client connected, initiating awareness fence registration");
registerAwarenessFences(context, googleApiClient);
}
else
{
Log.d(tag, "Couldn't connect");
}
}
@Override
public void onConnectionSuspended(int i) {
}
});
googleApiClient.connect();
}
private void registerAwarenessFences(Context context, GoogleApiClient mGoogleApiClient) {
Awareness.FenceApi.updateFences(
mGoogleApiClient,
new FenceUpdateRequest.Builder()
.addFence(WALKING_ENDED_FENCE, DetectedActivityFence.stopping(DetectedActivityFence.WALKING), getBroadcastPendingIntent(context))
.addFence(RUNNING_ENDED_FENCE, DetectedActivityFence.stopping(DetectedActivityFence.RUNNING), getBroadcastPendingIntent(context))
.addFence(TYPE_2_WALKING, DetectedActivityFence.during(DetectedActivityFence.WALKING), getBroadcastPendingIntent(context))
.addFence(TYPE_2_RUNNING, DetectedActivityFence.stopping(DetectedActivityFence.RUNNING), getBroadcastPendingIntent(context))
.build())
.setResultCallback(new ResultCallback<Status>() {
@Override
public void onResult(@NonNull Status status) {
if (status.isSuccess()) {
Log.i(tag, "Fence was successfully registered.");
} else {
Log.e(tag, "Fence could not be registered: " + status);
}
}
});
}
private GoogleApiClient buildClient(final Activity activity)
{
GoogleApiClient client = new GoogleApiClient.Builder(activity)
.addApi(Awareness.API)
.addOnConnectionFailedListener(new GoogleApiClient.OnConnectionFailedListener() {
@Override
public void onConnectionFailed(@NonNull ConnectionResult connectionResult) {
if ( connectionResult.hasResolution() && connectionResult.getErrorCode() == CommonStatusCodes.SIGN_IN_REQUIRED )
{
try {
connectionResult.startResolutionForResult(activity, GOOGLE_FIT_AUTHORIZATION_REQUEST_CODE);
} catch (IntentSender.SendIntentException e) {
e.printStackTrace();
}
}
}
})
.build();
return client;
}
private PendingIntent getBroadcastPendingIntent(Context context)
{
Intent intent = new Intent(AWARENESS_BROADCAST_ACTION);
PendingIntent pendingIntent = PendingIntent.getBroadcast(context, 0, intent, 0);
return pendingIntent;
}
}
我收到了通知，但经过大量延迟，有时根本没有。我多次启动活动，所以也许围栏正在一遍又一遍地注册？这是一个相关的事实吗？服务或广播接收器上下文是否也适用于意识客户端和栅栏的初始化？