/* * Copyright (C) 2020 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.example.android.hapticassessment import android.graphics.Color import android.os.Bundle import android.os.VibrationEffect import android.os.VibrationEffect.EFFECT_CLICK import android.os.Vibrator import android.view.View import android.widget.Button import androidx.appcompat.app.AppCompatActivity /** App main screen. */ class MainActivity : AppCompatActivity() { companion object { private const val ONE_SHOT_TIMING = 20L private const val ONE_SHOT_AMPLITUDE = 255 private val WAVEFORM_TIMINGS = longArrayOf(500, 500) private val WAVEFORM_AMPLITUDES = intArrayOf(128, 255) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) val vibrator = getSystemService(Vibrator::class.java) findViewById