1 /*
2  * Copyright (C) 2020 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 com.example.android.hapticassessment
18 
19 import android.graphics.Color
20 import android.os.Bundle
21 import android.os.VibrationEffect
22 import android.os.VibrationEffect.EFFECT_CLICK
23 import android.os.Vibrator
24 import android.view.View
25 import android.widget.Button
26 
27 import androidx.appcompat.app.AppCompatActivity
28 
29 /** App main screen. */
30 class MainActivity : AppCompatActivity() {
31 
32     companion object {
33 
34         private const val ONE_SHOT_TIMING = 20L
35         private const val ONE_SHOT_AMPLITUDE = 255
36 
37         private val WAVEFORM_TIMINGS = longArrayOf(500, 500)
38         private val WAVEFORM_AMPLITUDES = intArrayOf(128, 255)
39     }
40 
41     override fun onCreate(savedInstanceState: Bundle?) {
42         super.onCreate(savedInstanceState)
43         setContentView(R.layout.activity_main)
44 
45         val vibrator = getSystemService(Vibrator::class.java)
46 
47         findViewById<Button>(R.id.click_effect_button).setOnClickListener {
48             vibrator.vibrate(VibrationEffect.createPredefined(EFFECT_CLICK))
49         }
50 
51         findViewById<Button>(R.id.oneshot_effect_button).setOnClickListener {
52             vibrator.vibrate(VibrationEffect.createOneShot(ONE_SHOT_TIMING, ONE_SHOT_AMPLITUDE))
53         }
54 
55         findViewById<Button>(R.id.waveform_effect_button).setOnClickListener { view: View ->
56             vibrator.vibrate(
57                 VibrationEffect.createWaveform(WAVEFORM_TIMINGS, WAVEFORM_AMPLITUDES, -1))
58 
59             val button = view as Button
60             if (vibrator.hasAmplitudeControl()) {
61                 button.text = getString(R.string.button_3_pass)
62                 button.setBackgroundColor(Color.GREEN)
63                 button.setTextColor(Color.BLACK)
64             } else {
65                 button.text = getString(R.string.button_3_fail)
66                 button.setBackgroundColor(Color.RED)
67                 button.setTextColor(Color.WHITE)
68             }
69         }
70     }
71 }
72