1 /*
2  * Copyright (C) 2012 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 package android.os;
18 
19 /**
20  * Vibrator implementation that does nothing.
21  *
22  * @hide
23  */
24 public class NullVibrator extends Vibrator {
25     private static final NullVibrator sInstance = new NullVibrator();
26 
NullVibrator()27     private NullVibrator() {
28     }
29 
getInstance()30     public static NullVibrator getInstance() {
31         return sInstance;
32     }
33 
34     @Override
hasVibrator()35     public boolean hasVibrator() {
36         return false;
37     }
38 
39     @Override
isVibrating()40     public boolean isVibrating() {
41         return false;
42     }
43 
44     @Override
hasAmplitudeControl()45     public boolean hasAmplitudeControl() {
46         return false;
47     }
48 
49     @Override
vibrate(int uid, String opPkg, VibrationEffect effect, String reason, VibrationAttributes attributes)50     public void vibrate(int uid, String opPkg, VibrationEffect effect,
51             String reason, VibrationAttributes attributes) {
52     }
53 
54     @Override
cancel()55     public void cancel() {
56     }
57 
58     @Override
cancel(int usageFilter)59     public void cancel(int usageFilter) {
60     }
61 }
62