import com.google.android.gms.awareness.fence.HeadphoneFence; //导入依赖的package包/类
private void addHeadphoneFence() {
    Intent intent = new Intent(MY_FENCE_RECEIVER_ACTION);
    PendingIntent mFencePendingIntent = PendingIntent.getBroadcast(FenceActivity.this,
            10001,
            intent,
            0);

    AwarenessFence headphoneFence = HeadphoneFence.during(HeadphoneState.PLUGGED_IN);
    Awareness.FenceApi.updateFences(
            mGoogleApiClient,
            new FenceUpdateRequest.Builder()
                    .addFence(HEADPHONE_FENCE_KEY, headphoneFence, mFencePendingIntent)
                    .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);
                    }
                }
            });
}
 

import com.google.android.gms.awareness.fence.HeadphoneFence; //导入依赖的package包/类
private void addHeadphoneAndLocationFence() {
        Intent intent = new Intent(MY_FENCE_RECEIVER_ACTION);
        PendingIntent mFencePendingIntent = PendingIntent.getBroadcast(FenceActivity.this,
                10001,
                intent,
                0);

        AwarenessFence headphoneFence = HeadphoneFence.during(HeadphoneState.PLUGGED_IN);
        AwarenessFence activityFence = DetectedActivityFence.during(DetectedActivityFence.WALKING);
        AwarenessFence jointFence = AwarenessFence.and(headphoneFence, activityFence);
        Awareness.FenceApi.updateFences(
                mGoogleApiClient,
                new FenceUpdateRequest.Builder()
                        .addFence(HEADPHONE_AND_WALKING_FENCE_KEY,
                                jointFence, mFencePendingIntent)
                        .build())
                .setResultCallback(new ResultCallback<Status>() {
                    @Override
                    public void onResult(@NonNull Status status) {
                        if (status.isSuccess()) {
                            Log.i(TAG, "Headphones AND Walking Fence was successfully registered.");
                        } else {
                            Log.e(TAG, "Headphones AND Walking Fence could not be registered: " + status);
                        }
                    }
                });
}
 

import com.google.android.gms.awareness.fence.HeadphoneFence; //导入依赖的package包/类
@Override
AwarenessFence getAwarenessFence(Context ctx) {
    switch (mTriggerType) {
        case STATE:
            return HeadphoneFence.during(mHeadphoneState);
        case PLUGGING_IN:
            return HeadphoneFence.pluggingIn();
        case UNPLUGGING:
            return HeadphoneFence.unplugging();
    }
    return null;
}
 

import com.google.android.gms.awareness.fence.HeadphoneFence; //导入依赖的package包/类
private void subscribeToBackgroundFence() {
    disposables.add(BackgroundFence.query(this)
            .subscribe(
                    fenceStateMap -> {
                        if (!fenceStateMap.getFenceKeys().contains(ExampleFenceReceiver.HEADPHONES)) {
                            AwarenessFence fence = HeadphoneFence.during(HeadphoneState.PLUGGED_IN);
                            BackgroundFence.register(this, ExampleFenceReceiver.HEADPHONES, fence);
                        }
                    },
                    throwable -> logError(throwable, "query")
            )
    );
}
 

import com.google.android.gms.awareness.fence.HeadphoneFence; //导入依赖的package包/类
private void addHeadphoneOrLocationFence() {
    Intent intent = new Intent(MY_FENCE_RECEIVER_ACTION);
    PendingIntent mFencePendingIntent = PendingIntent.getBroadcast(FenceActivity.this,
            10001,
            intent,
            0);

    AwarenessFence headphoneFence = HeadphoneFence.during(HeadphoneState.PLUGGED_IN);
    AwarenessFence activityFence = DetectedActivityFence.during(DetectedActivityFence.WALKING);

    AwarenessFence orFence = AwarenessFence.or(headphoneFence, activityFence);
    Awareness.FenceApi.updateFences(
            mGoogleApiClient,
            new FenceUpdateRequest.Builder()
                    .addFence(HEADPHONE_OR_WALKING_FENCE_KEY,
                            orFence, mFencePendingIntent)
                    .build())
            .setResultCallback(new ResultCallback<Status>() {
                @Override
                public void onResult(@NonNull Status status) {
                    if (status.isSuccess()) {
                        Log.i(TAG, "Headphones OR Walking Fence was successfully registered.");
                    } else {
                        Log.e(TAG, "Headphones OR Walking Fence could not be registered: " + status);
                    }
                }
            });
}
 

import com.google.android.gms.awareness.fence.HeadphoneFence; //导入依赖的package包/类
/**
 * Sets up {@link AwarenessFence}'s for the sample app, and registers callbacks for them
 * with a custom {@link BroadcastReceiver}
 */
private void setupFences() {
    // DetectedActivityFence will fire when it detects the user performing the specified
    // activity.  In this case it's walking.
    AwarenessFence walkingFence = DetectedActivityFence.during(DetectedActivityFence.WALKING);

    // There are lots of cases where it's handy for the device to know if headphones have been
    // plugged in or unplugged.  For instance, if a music app detected your headphones fell out
    // when you were in a library, it'd be pretty considerate of the app to pause itself before
    // the user got in trouble.
    AwarenessFence headphoneFence = HeadphoneFence.during(HeadphoneState.PLUGGED_IN);

    // Combines multiple fences into a compound fence.  While the first two fences trigger
    // individually, this fence will only trigger its callback when all of its member fences
    // hit a true state.
    AwarenessFence walkingWithHeadphones = AwarenessFence.and(walkingFence, headphoneFence);

    // We can even nest compound fences.  Using both "and" and "or" compound fences, this
    // compound fence will determine when the user has headphones in and is engaging in at least
    // one form of exercise.
    // The below breaks down to "(headphones plugged in) AND (walking OR running OR bicycling)"
    AwarenessFence exercisingWithHeadphonesFence = AwarenessFence.and(
            headphoneFence,
            AwarenessFence.or(
                    walkingFence,
                    DetectedActivityFence.during(DetectedActivityFence.RUNNING),
                    DetectedActivityFence.during(DetectedActivityFence.ON_BICYCLE)));


    // Now that we have an interesting, complex condition, register the fence to receive
    // callbacks.

    // Register the fence to receive callbacks.
    Awareness.getFenceClient(this).updateFences(new FenceUpdateRequest.Builder()
            .addFence(FENCE_KEY, exercisingWithHeadphonesFence, mPendingIntent)
            .build())
            .addOnSuccessListener(new OnSuccessListener<Void>() {
                @Override
                public void onSuccess(Void aVoid) {
                    Log.i(TAG, "Fence was successfully registered.");
                }
            })
            .addOnFailureListener(new OnFailureListener() {
                @Override
                public void onFailure(@NonNull Exception e) {
                    Log.e(TAG, "Fence could not be registered: " + e);
                }
            });
}