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 import android.media.AudioAttributes;
20 
21 /**
22  * Vibrator implementation that does nothing.
23  *
24  * @hide
25  */
26 public class NullVibrator extends Vibrator {
27     private static final NullVibrator sInstance = new NullVibrator();
28 
NullVibrator()29     private NullVibrator() {
30     }
31 
getInstance()32     public static NullVibrator getInstance() {
33         return sInstance;
34     }
35 
36     @Override
hasVibrator()37     public boolean hasVibrator() {
38         return false;
39     }
40 
41     @Override
isVibrating()42     public boolean isVibrating() {
43         return false;
44     }
45 
46     @Override
hasAmplitudeControl()47     public boolean hasAmplitudeControl() {
48         return false;
49     }
50 
51     @Override
vibrate(int uid, String opPkg, VibrationEffect effect, String reason, AudioAttributes attributes)52     public void vibrate(int uid, String opPkg, VibrationEffect effect,
53             String reason, AudioAttributes attributes) {
54     }
55 
56     @Override
cancel()57     public void cancel() {
58     }
59 }
60